Controls Power Source Speed Patents (Class 187/293)
  • Patent number: 10934130
    Abstract: An elevator system includes a first elevator car (28) constructed and arranged to move in a first lane (30, 32, 34) and a first propulsion system (40) constructed and arranged to propel the first elevator. An electronic processor of the elevator system is configured to selectively control power delivered to the first propulsion system (40). The electronic processor includes a software-based power estimator configured to receive a first weight signal and a nm trajectory signal for calculating a power estimate and comparing the power estimate to a maximum power allowance. The electronic processor is configured to output an automated command signal if the power estimate exceeds the maximum power allowance.
    Type: Grant
    Filed: August 24, 2016
    Date of Patent: March 2, 2021
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: Shashank Krishnamurthy, Jose Miguel Pasini, David Ginsberg, Arthur Hsu
  • Patent number: 10889464
    Abstract: A system for the generation of call advance data for an elevator control, which system is going to be installed in an elevator car moving in an elevator shaft and includes at least one acceleration sensor outputting current acceleration data and/or magnetometer outputting a magnetic flux signal which includes current magnetic flux data at the current position of the elevator car, which acceleration sensor and/or magnetometer is mounted in connection with the elevator car; a velocity calculating unit which calculates from the current acceleration/magnetic flux data current car velocity data; a position calculating unit which calculates from the current acceleration/magnetic flux data and/or from the current car velocity data current car position data; and a call advance processing unit which calculates from the current car velocity data and the current car position data call advance data which designates the time until which the car is able to stop at the next approaching floor in travelling direction, which c
    Type: Grant
    Filed: May 23, 2017
    Date of Patent: January 12, 2021
    Assignee: KONE CORPORATION
    Inventors: Veikko Mattsson, Kenneth Kronkvist
  • Patent number: 10763741
    Abstract: The present invention relates to a method for reducing common mode current in power electronic equipment comprising two or more active front end (AFE) components (1) coupled in parallel between an AC supply grid (2) and a DC-link (3). A duty cycle of pulse width modulation (PWM) for the AFE components (1) is determined, and an error signal is derived based on the determined duty cycle of PWM and on a common mode current of the AFE components (1). A correction voltage is derived, based on the error signal, and a DC voltage control signal is derived based on the derived correction voltage and a measured DC voltage of the DC-link (3) and/or a DC voltage reference. The power electronic equipment is controlled in accordance with the derived DC voltage control signal. The present invention also relates to a method for starting active front end (AFE) components (1) of power electronic equipment comprising two or more AFE components (1) coupled in parallel between an AC supply grid (2) and a DC-link (3).
    Type: Grant
    Filed: April 30, 2019
    Date of Patent: September 1, 2020
    Assignee: VACON OY
    Inventor: Andreas Doktar
  • Patent number: 10730720
    Abstract: A method monitors at least one suspension apparatus in an elevator system, wherein the suspension apparatus includes at least one electrically conducting tension load carrying member that is surrounded by an electrically insulating jacket. The method includes the steps of: repeated determination of a value of an electrical characteristic of at least one tension load carrying member or of a group of tension load carrying members; establishment of a mean value on the basis of the determined values; and comparison of the mean value established with a reference value.
    Type: Grant
    Filed: September 11, 2015
    Date of Patent: August 4, 2020
    Assignee: INVENTIO AG
    Inventor: Florian Dold
  • Patent number: 10647543
    Abstract: An elevator system with an elevator car 14, a linear propulsion system to impart force to the elevator car in a hoistway 11, a hoistway communication network 106, 206, a local communication network 110, 210, 310 and motion controls. One of the motion controls proximate to the elevator car is designated as a primary control 61 operable to command at least one drive 42A-42F via the local communication network. The at least one drive is coupled to one or more motor segments 22 of the linear propulsion system. The elevator system further includes a controller 46 operable to command the primary control via the hoistway communication network to reposition the elevator car within the hoistway. The designation of the primary control transitions between the motion controls as the elevator car moves in the hoistway.
    Type: Grant
    Filed: February 4, 2016
    Date of Patent: May 12, 2020
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: David Ginsberg, Dang V. Nguyen, Shashank Krishnamurthy
  • Patent number: 10486935
    Abstract: An elevator diagnosing device includes a hoisting machine including a sheave, around which a middle portion of a main rope suspending an elevator car is wound, and a controller controlling travel of the elevator car by controlling operation of the hoisting machine. The controller includes a car controller performing first travel control causing the elevator car to travel at a first acceleration/deceleration and second travel control causing the elevator car to travel at a second acceleration/deceleration less than the first acceleration/deceleration, a rope feed amount difference detector detecting a difference in feed amount of the main rope by rotation of the sheave when the elevator car travels equal distances under the first and second travel controls, and a determiner determining traction performance of the sheave based on the difference in the amount of feed of the main rope detected by the rope feed amount difference detector.
    Type: Grant
    Filed: February 18, 2015
    Date of Patent: November 26, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventor: Masahiko Hida
  • Patent number: 10427262
    Abstract: A machine tool includes a rotary table to which a workpiece is mounted, a brake, a displays, a memory configured to store a table in which values of a first coefficient correspond to different sizes of a disturbance torque, and values of a second coefficient correspond to different sizes of inertia of the workpiece. The controller is configured to calculate a size of the disturbance torque, find a first coefficient corresponding to the calculated size of the disturbance torque and the table, find a second coefficient corresponding to the size of the inertia of the workpiece and the table, accumulate the found values of the first and second coefficients, and cause the display to generate an indicator of necessity of a replacement of the brake in response to that the accumulated values of the first and second coefficients reaches a predetermined value.
    Type: Grant
    Filed: July 10, 2015
    Date of Patent: October 1, 2019
    Assignee: FANUC CORPORATION
    Inventor: Michi Masuya
  • Patent number: 10336576
    Abstract: A method for testing operation of an elevator including an elevator car includes starting movement of the elevator car; and thereafter starting a stopping sequence for stopping movement of the elevator car; and monitoring movement of the elevator car, the monitoring preferably including monitoring acceleration of the elevator car; and detecting a predefined response in movement of the elevator car, the predefined response preferably being cease of acceleration of the elevator car; and determining time elapsed between the starting a stopping sequence and the detected predefined response in movement of the elevator car, wherein the response is preferably cease of acceleration, for thereby determining reaction time of the elevator; and comparing the time elapsed with at least one reference, such as with at least one predefined threshold. An elevator is provided for implementing the method.
    Type: Grant
    Filed: December 27, 2016
    Date of Patent: July 2, 2019
    Assignee: KONE CORPORATION
    Inventors: Ari Kattainen, Juha-Matti Aitamurto
  • Patent number: 10294080
    Abstract: A device serves for determining the speed of a passenger-transporting system. The device includes an arrangement of auxiliary elements and a sensing device. The arrangement of the auxiliary elements rotates, in a manner corresponding to a movement of the passenger-transporting system. The sensing device can sense whether an auxiliary element is, or is not, located at a certain sensing location. The auxiliary elements are of a first configuration type and a second configuration type. The sensing device can sense whether an auxiliary element is of the first configuration type or of the second configuration type. Furthermore, the sensing device can assign an auxiliary element of the first configuration type and an auxiliary element of the second configuration type to one another such that the direction of rotation can be determined from the order in which the auxiliary elements are sensed.
    Type: Grant
    Filed: August 17, 2016
    Date of Patent: May 21, 2019
    Assignee: Inventio AG
    Inventor: Ivo Lustenberger
  • Patent number: 10148203
    Abstract: A motor driving apparatus of the present invention includes a converter unit configured to convert an AC voltage into a DC voltage, a DC link unit configured to smooth the DC voltage by a capacitor to generate a DC link voltage, an inverter unit configured to convert the DC link voltage into a multiphase AC voltage for motor driving, short bars configured to electrically interconnect terminals of the DC link unit and terminals of the inverter unit, and a DC link voltage detection unit configured to detect the DC link voltage. At least parts of the short bars are located between the terminals of the DC link unit and terminals of the DC link voltage detection unit.
    Type: Grant
    Filed: February 12, 2015
    Date of Patent: December 4, 2018
    Assignee: FANUC CORPORATION
    Inventor: Yasuyuki Matsumoto
  • Patent number: 10135299
    Abstract: An elevator system includes a car arranged to move along a hoistway and a wireless power transfer system that includes a secondary resonant coil mounted to the car and configured to induce an electro-motive force and output a voltage or current, and a plurality of primary resonant coils distributed along the hoistway and configured to transmit power to the secondary resonant coil when a primary resonant coil is adjacent to the secondary resonant coil and is selectively energized. A control system of the wireless power transfer system is configured to select and energize the plurality of primary resonant coils, and includes a plurality of switches with each one being associated with a respective one of the plurality of primary resonant coils. The plurality of switches are configured to selectively close to energize a selected one of the plurality of primary resonant coils associated with a location of the car.
    Type: Grant
    Filed: August 23, 2016
    Date of Patent: November 20, 2018
    Assignee: OTIS ELEVATOR COMPANY
    Inventors: Suman Dwari, Dang V. Nguyen
  • Patent number: 10053330
    Abstract: The present invention relates to a method for controlling an operation of an elevator, which is capable of moving the elevator to a near floor by using an auxiliary power supply such as a battery in an emergency situation where a commercial power supply cannot be used, while minimizing power consumption through automatic control. The method includes: detecting the current operation zone of the elevator when an auxiliary power supply driving situation occurs; and operating the elevator by using the auxiliary power supply to correspond to the detected current operation zone. The detected current operation zone corresponds to one of an acceleration zone, a constant speed zone, a creep zone and a seating zone.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: August 21, 2018
    Assignee: LSIS CO., LTD.
    Inventor: Ju-Beom Son
  • Patent number: 9843284
    Abstract: A system for controlling fault tolerance may include a first controller connected to a driver, a first switch connected in parallel to the first controller, a first capacitor connected in parallel to the first switch, a second switch connected in parallel to the first capacitor and different from the first switch, a first power supply connected in parallel to the first capacitor and connected in series to the second switch, and a second capacitor connected to the first switch and a ground of the first power supply and different from the first capacitor. When the first controller is broken down, the second switch may be turned off to interrupt power supply from the first power supply, and the first switch may be turned on to discharge electric charges charged in the second capacitor.
    Type: Grant
    Filed: December 26, 2014
    Date of Patent: December 12, 2017
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Young-Ho Hwang, Jang-Hwan Kim, Sang-Yoon Soh
  • Patent number: 9802790
    Abstract: A drive device of an elevator includes a DC bus, a motor bridge connected to the DC bus for the electricity supply of the elevator motor, a control circuit with which control circuit the operation of the motor bridge is controlled by producing control pulses in control poles of high-side and low-side switches of the motor bridge, a brake controller, which comprises a switch for supplying electric power to an electromagnetic brake, a brake control circuit, with which the operation of the brake controller is controlled, an input circuit for the safety signal to be disconnected/connected from outside the drive device, drive prevention logic and brake drop-out logic connected to the input circuit and configured to prevent the passage of control pulses to the control poles of the high-side and/or low-side switches when the safety signal is disconnected.
    Type: Grant
    Filed: November 4, 2014
    Date of Patent: October 31, 2017
    Assignee: KONE CORPORATION
    Inventors: Ari Kattainen, Pasi Raassina, Tapio Saarikoski, Lauri Stolt, Arto Nakari, Antti Kallioniemi
  • Patent number: 9797375
    Abstract: In a first aspect, the present invention provides a blade pitch system for a wind turbine, comprising at least one multi winding motor comprising a main independent set of control windings and at least one auxiliary independent set of control windings; and at least a main independent power electronic converter for controlling the main independent set of control windings, and an auxiliary independent power electronic converter for controlling the auxiliary independent set of control windings.
    Type: Grant
    Filed: March 28, 2012
    Date of Patent: October 24, 2017
    Assignee: ALSTOM RENEWABLE TECHNOLOGIES
    Inventor: Pedro Palomares Rentero
  • Patent number: 9797184
    Abstract: A method is disclosed of operating an automatic door installation comprising door sensor equipment including a door sensor. The automatic door installation is operable in at least a standard mode, in which the door sensor equipment conducts an obstacle check to determine whether an obstacle is present according to a first obstacle check procedure, and a contingency mode, in which the door sensor equipment conducts the obstacle check according to a different second obstacle check procedure. The method includes the steps of evaluating an operating condition of the automatic door installation; determining whether the operating condition lies within a standard operating range; and operating the automatic door installation in the contingency mode when the operating condition lies outside a respective standard operating range.
    Type: Grant
    Filed: May 1, 2015
    Date of Patent: October 24, 2017
    Assignee: Ensota Limited
    Inventors: Peter Collins, John Curzon
  • Patent number: 9776827
    Abstract: The invention relates to an elevator system and also to a method for monitoring the movement an elevator car. In the method a first emergency braking procedure is activated for braking the elevator car at a first deceleration if the speed of the elevator car exceeds the first limit value for permitted speed, and also a second emergency braking procedure is further activated for braking the elevator car at a second deceleration that is greater than the first, if the speed of the elevator car exceeds the second limit value for permitted speed that is greater than the first limit value for permitted speed.
    Type: Grant
    Filed: June 13, 2014
    Date of Patent: October 3, 2017
    Assignee: KONE CORPORATION
    Inventors: Ari Harkonen, Petteri Valjus
  • Patent number: 9745170
    Abstract: A method for operating an elevator control system for controlling and monitoring the movements of at least one elevator car when the elevator car approaches individual floors in a building, and in the process stops at a respective floor in a prescribed stopping position, the method including, in conjunction with a floor stop, determining an overall error in the form of a deviation between an actual position of the elevator car and a position of the elevator car assumed as the current position. The elevator control system generates service signals based on a statistical acquisition of several values for the overall error, and/or wherein the overall error is used to ascertain a derivative value, which is taken into account along with the current or stopping position during a comparison between the current position and stopping position performed by the elevator control system for approaching the respective stopping position.
    Type: Grant
    Filed: November 13, 2014
    Date of Patent: August 29, 2017
    Assignee: Inventio AG
    Inventor: Frank Olivier Roussel
  • Patent number: 9573793
    Abstract: The invention relates to an elevator having a car and guide rails along which the car is guided along a hoistway between landings of the elevator, the car comprising: a frame, upper and lower guide elements, which are mounted to said frame at a vertical distance from each other, and exactly one elevator cabin with a cabin floor, in which elevator the cabin is—in travel direction of the car—movably connected to the frame between an uppermost and a lowermost position. By this means a high travel comfort can be obtained with economic space usage at the top and bottom of the hoistway.
    Type: Grant
    Filed: April 12, 2013
    Date of Patent: February 21, 2017
    Assignee: KONE CORPORATION
    Inventors: Jaakko Kalliomäki, Johannes De Jong
  • Patent number: 9541064
    Abstract: The present invention relates to a wind turbine having a wind turbine tower with a nacelle provided on the top to which a rotor hub with one or more wind turbine blades is rotatably mounted by a rotor shaft. A generator is arranged in the nacelle, wherein the superconducting rotor coils induce a current in the stator coils when the rotor is rotated, and wherein the stator coils are arranged in at least four phases. One or more converter modules convert the power output from the generator so that it matches the power of a power grid. The generator side of the converter modules comprises a number of rectifying circuits equal to the phases in the generator, while the power grid side comprises a number of inverting circuits equal to the phases of the power grid. This allows the transient of the electromagnetic brake torque relative to the nominal electromagnetic torque of the generator to be reduced.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: January 10, 2017
    Assignee: ENVISION ENERGY (DENMARK) APS
    Inventor: Peter Rasmussen
  • Patent number: 9353732
    Abstract: According to a method of the present invention, a method of operating a wind turbine comprising a power generator, a generator side converter connected to the power generator, a line side converter connected to a power grid through power components, and a DC-link connected between the generator side converter and the line side converter is provided, the method comprising: monitoring the grid voltages on the power grid for overvoltage events; if an overvoltage event is detected, operating the line side converter in an overmodulation range for at least a part of the duration of the overvoltage event.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: May 31, 2016
    Assignee: Vestas Wind Systems A/S
    Inventors: Amit Kumar Gupta, Anshuman Tripathi
  • Patent number: 9281759
    Abstract: A power converting apparatus and a photovoltaic module are discussed. The power converting apparatus includes a converter including a tapped inductor and a first switch, the converter converting a level of an input direct current (DC) voltage and outputting the level-converted DC voltage, and an inverter including a plurality of switches, the inverter converting the level-converted DC voltage into an alternating current (AC) voltage. The inverter operates separately in a first switching mode where the inverter performs a switching operation at a first frequency for a first period of the converted AC voltage and a second switching mode where the inverter performs a switching operation at a second frequency for a second period of the converted AC voltage, the second frequency being lower than the first frequency.
    Type: Grant
    Filed: January 25, 2013
    Date of Patent: March 8, 2016
    Assignee: LG ELECTRONICS INC.
    Inventors: Kiok Lee, Eonjoo Hwang, Myonghwan Kim
  • Patent number: 9256362
    Abstract: Provided is a network system including at least first and second communication terminals capable of communicating with each other via a network. The first communication terminal causes handwritten data input in response to an instruction for a point on an image to be displayed in a certain position on the image corresponding to this point, associates the point information about the point with the handwritten data and transmits the point information and the handwritten data to the second communication terminal. Based on the point information and the handwritten data from the first communication terminal, the second communication terminal causes at least a part of the image to be displayed on a second display and also causes the handwritten data to be displayed in a location in accordance with the point information.
    Type: Grant
    Filed: December 24, 2010
    Date of Patent: February 9, 2016
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Masaki Yamamoto, Masahide Takasugi, Misuzu Kawamura
  • Patent number: 9022178
    Abstract: An elevator system (20) includes a propulsion power assembly (38) with a power rating below that required to move a fully loaded elevator car (22) using a contract or design motion profile. One example propulsion power assembly (38) uses more than one motion profile based upon existing load conditions. One example uses a first motion profile including a first power parameter limit for load conditions at or below a selected load threshold that is less than a maximum load capacity of the car (22). The propulsion power assembly (38) uses a second motion profile with a lower power parameter limit for other load conditions. In one example, electrical current is the power parameter selected as a decision parameter dictating which profile to select based on an existing load. Another example propulsion power assembly (38) selects at least one of a speed limit or an electrical current limit based on an existing load and maintains a speed to stay within the selected limit.
    Type: Grant
    Filed: October 14, 2004
    Date of Patent: May 5, 2015
    Assignee: Otis Elevator Company
    Inventors: Gianluca Foschini, Sandro Bonfiglioli, Leonida Lorquando, Ronnie Thebeau, Sally Mahoney
  • Patent number: 8997939
    Abstract: A control system for a hydraulic elevator. The system (10) controls an elevator (1) which includes an elevator cylinder (5) with a piston (5a) coupled to a car (2), a pump (4) having an outlet coupled to the elevator cylinder (5), and an electric motor (3) coupled to the pump (4). A speed regulator (11) for controlling the speed of the car (2) is driven in predetermined modes, such that the pump (4) rotates at predefined speed. The speed regulator (11) is driven such that the motor (3) of the pump (4) is supplied with a voltage having a frequency (f) the value of which corresponds to a predefined speed value (?), increased by an amount (cft; fts, ftD) which is a predetermined function of the working pressure (P1) of the pump (4). This balances the effect of the leakage of operating hydraulic fluid in the pump (4).
    Type: Grant
    Filed: April 28, 2010
    Date of Patent: April 7, 2015
    Assignee: Brea Impianti S.U.R.L.
    Inventor: Sebastiano Acquaviva
  • Patent number: 8763760
    Abstract: An adjustment device for controlling the electric drive of an elevator in connection with a voltage reduction of the supplying network is disclosed. The electric drive of an elevator includes an electric motor and a power supply apparatus of for adjusting the supply voltage of the electric motor. The adjustment device includes a device configured to control the power supply apparatus and also a speed regulator for adjusting the speed of the electric motor. The adjustment device is arranged to determine the output voltage of the power supply apparatus of the electric motor in relation to the permitted maximum value of the output voltage, and the adjustment device is arranged to interrupt the operation of the speed regulator but to continue the operation of the power supply apparatus of the electric motor when the output voltage of the power supply apparatus of the electric motor reaches the permitted maximum value.
    Type: Grant
    Filed: September 10, 2012
    Date of Patent: July 1, 2014
    Assignee: Kone Corporation
    Inventors: Lauri Stolt, Antti Kallioniemi, Tuukka Kauppinen
  • Patent number: 8757328
    Abstract: The invention relates to a method and to devices for starting up an electric drive of an elevator. In the method a sensor that detects the direction of movement of the elevator car is fitted into the elevator system, the elevator car is brought into a state of movement, the direction of movement of the elevator car is detected from the measuring signal of the aforementioned sensor that detects the direction of movement of the elevator car and also the drive direction of the electric drive is connected in the control of the electric drive to the detected direction of movement of the elevator car.
    Type: Grant
    Filed: August 29, 2012
    Date of Patent: June 24, 2014
    Assignee: Kone Corporation
    Inventor: Lauri Stolt
  • Patent number: 8720649
    Abstract: The invention relates to an elevator system and also to a method for detaching an elevator car and/or a counterweight from a safety gear. In the method torque pulses are produced with the hoisting machine of an elevator, for detaching a gripped stuck elevator car and/or a gripped stuck counterweight.
    Type: Grant
    Filed: May 8, 2012
    Date of Patent: May 13, 2014
    Assignee: Kone Corporation
    Inventor: Risto Jokinen
  • Patent number: 8714312
    Abstract: The elevator safety rescue system is an electro-hydraulic system particularly suited for use in rack and pinion drive elevators installed with tall towers, mines, smoke stacks, and other structures having relatively large elevations or depths. The system includes a positive displacement hydraulic pump driven by the output shaft of an electric elevator drive motor. An electro-hydraulic valve is electrically powered to maintain an open condition to allow unrestricted hydraulic flow through the pump during normal operation. In the event of an elevator malfunction, electrical power is terminated to the valve, causing the valve to close and thus requiring all hydraulic fluid to pass through a restrictor. The restrictor limits the flow of hydraulic fluid through the hydraulic pump, thus limiting its rotational speed and rotational speed of the elevator drive motor to which it is attached, thereby allowing the elevator to descend or climb (with counterweight) at a safe speed.
    Type: Grant
    Filed: May 3, 2011
    Date of Patent: May 6, 2014
    Inventors: James L. Tiner, Todd C. Grovatt
  • Patent number: 8674631
    Abstract: A power conversion apparatus includes: a line breaker that is connected in series to a direct-current power supply; a first capacitor that is connected in parallel to the direct-current power supply through the line breaker; a discharge circuit that includes a resistor and a first switching circuit connected in series and is connected in parallel to the first capacitor; a power converter for driving a synchronous machine; a second capacitor that is connected in parallel to a direct-current side of the power converter; a second switching circuit that is connected in series between the first capacitor and the second capacitor; and a control circuit for controlling the discharge circuit. The control circuit controls the discharge circuit on the basis of the voltage of the first capacitor and the voltage of the second capacitor.
    Type: Grant
    Filed: May 13, 2009
    Date of Patent: March 18, 2014
    Assignee: Mitsubishi Electric Corporation
    Inventors: Masaki Kono, Keita Hatanaka
  • Patent number: 8657074
    Abstract: A suspension work platform hoist system having a variable acceleration motor control system and a tilt control system. The tilt control system includes at least one tilt sensor to sense a tilt angle of the work platform and generate a tilt signal. A tilt controller receives the tilt signal and generates a speed control signal, which is used by the variable acceleration motor control system to control the operation of the hoist motors to maintain a tilt angle setpoint as the work platform is raised and lowered. The tilt control system may include a settling mode having a settling tilt angle setpoint, wherein the settling mode prevents the work platform from being raised or lowered until the tilt angle of the work platform reaches the settling tilt angle setpoint.
    Type: Grant
    Filed: December 18, 2012
    Date of Patent: February 25, 2014
    Assignee: Sky Climber, LLC
    Inventors: James Bonanno, Robert E. Eddy
  • Patent number: 8579089
    Abstract: A method for controlling an elevator installed in a building that includes an elevator car arranged to travel in a hoistway between floor landings that are at different heights, one or more ropings connected to the elevator car, a hoisting machine for moving the elevator car, and a control for control the hoisting machine is provided. In the method, the sway data of the building is determined, which data describes the strength of the sway of the building, and the starting position data of the elevator car is determined, which starting position data contains data about the starting position of the elevator car and/or data about how long the elevator car has been in the starting position, and the settings for the run speed of the next run are determined on the basis of the starting position data and the sway data. An elevator is configured to perform the method.
    Type: Grant
    Filed: January 17, 2013
    Date of Patent: November 12, 2013
    Assignee: KONE Corporation
    Inventors: Tuomo Hakala, Sami Saarela, Jaakko Kalliomäki, Jarkko Saloranta
  • Patent number: 8534426
    Abstract: An elevator control system to govern elevator movement to avoid or minimize passenger discomfort caused by pressure changes associated with an elevator's movement and to optimize elevator operation. In one exemplary embodiment, the system uses the passenger's natural relief which occurs while the elevator car is stopped to reduce the pressure difference experienced by the passengers' ears as a factor to optimally control the operation of the elevator. In another example, the system obtains input regarding the traveling speed and conditions of the elevator system. This system then simulates individual trips for passengers that includes monitoring the pressure changes being experienced by passengers throughout the elevator's travels in order to ensure that the pressure differential level for each passenger remains below a designated maximum comfortable and safe level. This system uses the parameters of a successful simulation to govern the actual operation of the elevators.
    Type: Grant
    Filed: August 6, 2008
    Date of Patent: September 17, 2013
    Assignee: ThyssenKrupp Elevator Corporation
    Inventors: Rory Smith, Richard Peters
  • Publication number: 20130126276
    Abstract: A control device of an elevator improving the speed control performance by performing feedforward compensation. The control device includes a model torque calculating section which calculates, based on a speed instruction value for an electric motor, a model torque instruction value of the electric motor, a storage section which stores the relationship between the speed-dependent loss torque of the electric motor which varies due to variations in the rotation speed of the electric motor and the rotation speed of the electric motor, a speed-dependent loss torque calculating section which calculates, based on a detected value of the rotation speed of the electric motor, a speed-dependent loss torque value correlated to the detected value, and a driving torque calculating section which calculates a torque instruction value by adding the speed-dependent loss torque value correlated to the detected value to the model instruction value.
    Type: Application
    Filed: September 6, 2010
    Publication date: May 23, 2013
    Applicant: Mitsubishi Electric Corporation
    Inventor: Kazufumi Hirabayashi
  • Patent number: 8434599
    Abstract: A separation distance is maintained between a leading elevator car (14) and a trailing elevator car (12) traveling in the same direction in an elevator hoistway (16). A shortest stopping distance (dssl) of the leading elevator car (14) and a normal stopping distance (dnst) of the trailing elevator car (12) are determined. The separation distance (dsep) is controlled such that a difference between the normal stopping distance (dnst) of the trailing elevator car (12) and the shortest stopping distance (dssl) of the leading elevator car (14) is greater than or equal to a threshold distance (dthresh).
    Type: Grant
    Filed: September 18, 2007
    Date of Patent: May 7, 2013
    Assignee: Otis Elevator Company
    Inventors: Cheng-Shuo Wang, Arthur C. Hsu, CheongSik Shin, Hansoo Shim, SeongRak Jeong
  • Publication number: 20120222917
    Abstract: A movement of an elevator cage is detected by an elevator control on the basis of signals of a rotary encoder, coupled with a rotational movement of the drive motor or the drive pulley. Before movement of the cage begins, a movement plot in the form of a trip/speed profile is calculated for travel of the elevator cage from an instantaneous elevator cage position to a destination stopping point position. An anticipated slip between the drive pulley and a support means is included in the calculation of the trip/speed profile, and during the travel of the elevator cage a rotational movement of the drive motor and thus of the drive pulley is controlled by the elevator control in dependence on the calculated trip/speed profile and on signals of the rotary encoder.
    Type: Application
    Filed: September 2, 2011
    Publication date: September 6, 2012
    Applicant: Inventio AG
    Inventors: Valerio Villa, Yong Qi Cui
  • Publication number: 20120217098
    Abstract: The invention relates to a braking apparatus, an electric drive and an elevator system. The braking apparatus comprises an apparatus for dynamic braking, for braking an electric machine with dynamic braking, an input for the control signal of the braking apparatus, and also a controller, for controlling the apparatus for dynamic braking as a response to the aforementioned control signal of the braking apparatus.
    Type: Application
    Filed: May 2, 2012
    Publication date: August 30, 2012
    Applicant: Kone Corporation
    Inventors: Esa Putkinen, Antti Kallioniemi, Juha-Matti Nikander, Paavo Merilinna, Risto Komulainen
  • Patent number: 8191689
    Abstract: The elevator safety rescue system is an electro-hydraulic system particularly suited for use in rack and pinion drive elevators installed with tall towers, mines, smoke stacks, and other structures having relatively large elevations or depths. The system includes a positive displacement hydraulic pump driven by the output shaft of an electric elevator drive motor. An electro-hydraulic valve is electrically powered to maintain an open condition to allow unrestricted hydraulic flow through the pump during normal operation. In the event of an elevator malfunction, electrical power is terminated to the valve, causing the valve to close and thus requiring all hydraulic fluid to pass through a restrictor. The restrictor limits the flow of hydraulic fluid through the hydraulic pump, thus limiting its rotational speed and the rotational speed of the elevator drive motor to which it is attached, thereby allowing the elevator to descend at a safe speed.
    Type: Grant
    Filed: June 19, 2009
    Date of Patent: June 5, 2012
    Assignee: Tower Elevator Systems, Inc.
    Inventors: James L. Tiner, Todd C. Grovatt
  • Patent number: 8186484
    Abstract: An elevator system in which a controller monitors whether or not a speed of an ascending/descending body reaches a preset overspeed. At a time of maintenance work, a stopper is interposed between a buffer and the ascending/descending body to limit a lowered position of the ascending/descending body. A stopper detector detects installation of the stopper onto at least one of the buffer and the ascending/descending body. When the stopper is detected by the stopper detector, the controller lowers a set value of the overspeed.
    Type: Grant
    Filed: September 20, 2011
    Date of Patent: May 29, 2012
    Assignee: Mitsubishi Electric Corporation
    Inventors: Takaharu Ueda, Eiji Ando
  • Patent number: 8177034
    Abstract: An elevator system in which a controller monitors whether or not a speed of an ascending/descending body reaches a preset overspeed. At a time of maintenance work, a stopper is interposed between a buffer and the ascending/descending body to limit a lowered position of the ascending/descending body. A stopper detector detects installation of the stopper onto at least one of the buffer and the ascending/descending body. When the stopper is detected by the stopper detector, the controller lowers a set value of the overspeed.
    Type: Grant
    Filed: November 20, 2006
    Date of Patent: May 15, 2012
    Assignee: Mitsubishi Electric Corporation
    Inventors: Takaharu Ueda, Eiji Ando
  • Patent number: 8177032
    Abstract: A car is suspended by suspension means and raised and lowered by a hoisting machine. Electric power supplied to a motor of the hoisting machine is controlled by an electric power converter. The electric power converter is controlled by a control apparatus. The control apparatus estimates a maximum value of a regenerative voltage at time of a regenerative operation of the hoisting machine when the car is running. When the estimated maximum value of the regenerative voltage reaches a predetermined voltage limit value, the control apparatus controls the electric power converter so as to stop an increase in estimated maximum value of the regenerative voltage.
    Type: Grant
    Filed: February 14, 2007
    Date of Patent: May 15, 2012
    Assignee: Mitsubishi Electric Corporation
    Inventor: Jun Hashimoto
  • Patent number: 8177035
    Abstract: An elevator system in which a controller monitors whether or not a speed of an ascending/descending body reaches a preset overspeed. At a time of maintenance work, a stopper is interposed between a buffer and the ascending/descending body to limit a lowered position of the ascending/descending body. A stopper detector detects installation of the stopper onto at least one of the buffer and the ascending/descending body. When the stopper is detected by the stopper detector, the controller lowers a set value of the overspeed.
    Type: Grant
    Filed: September 20, 2011
    Date of Patent: May 15, 2012
    Assignee: Mitsubishi Electric Corporation
    Inventors: Takaharu Ueda, Eiji Ando
  • Patent number: 8118140
    Abstract: An elevator system and a method for accelerating the starting of travel in an elevator system are provided. The elevator system includes an elevator control system for implementing controlled motion of an elevator car; a door mechanism control system for implementing controlled movement of the elevator car door; and a door coupler, for forming a mechanical coupling between elevator car door and landing door; and a controller of fast start of travel, which has an input for elevator car position data, an input for landing door position data, an input for car door position data, and at least one output for activating the elevator motor power supply circuit and the elevator brake release circuit.
    Type: Grant
    Filed: February 28, 2011
    Date of Patent: February 21, 2012
    Assignee: Kone Corporation
    Inventors: Ari Kattainen, Antti Hovi
  • Patent number: 7971688
    Abstract: A system and a method for the adaptation of parameters in a transport system involve a power model which describes power flow in the transport system by means of transport system parameters, which include input parameters and status parameters. The system and method also involve the determination of at least a first and a second input parameter, and the power model is updated on the basis of at least the first input parameter. At least one transport system status parameter is adjusted using at least the updated power model and the second input parameter thus determined.
    Type: Grant
    Filed: May 6, 2010
    Date of Patent: July 5, 2011
    Assignee: Kone Corporation
    Inventors: Pekka Perälä, Tapio Tyni
  • Patent number: 7954604
    Abstract: An elevator speed governor for an elevator in which an elevator car (1) is attached to one end of a rope (2) having a counterweight (3) on the other end and driven by a motor (5) via the rope (2) comprises a motor current detector (15) that detects a motor current of the motor (5), a target speed determining section (11) that determines a target speed in accordance with the motor current detected by the motor current detector (15), and a motor control section (13) that controls the motor (5) so that the elevator car (1) moves at the target speed determined by the target speed determining section (11).
    Type: Grant
    Filed: July 6, 2006
    Date of Patent: June 7, 2011
    Assignee: Toshiba Elevator Kabushiki Kaisha
    Inventor: Koichi Mishima
  • Patent number: 7950499
    Abstract: A control apparatus for an elevator has a support device mounted on a car, a detection device for detecting the position of the car, and a control unit for controlling operation of the elevator based on information from the detection device. The support device has a rail holding member, which is displaceable with respect to the car and is guided by a guide rail located in a hoistway in which the car moves. The detection device is located on the rail holding member.
    Type: Grant
    Filed: November 29, 2005
    Date of Patent: May 31, 2011
    Assignee: Mitsubishi Electric Corporation
    Inventors: Ken-ichi Okamoto, Takashi Yumura
  • Publication number: 20110108368
    Abstract: To alleviate the ear block discomfort of passengers without causing any undue reduction in the operational efficiency of an elevator. A travel distance calculating section 13 calculates a travel distance of a car room 1 based on destination floor information 12a and a car position command signal 3a, and output travel distance information 13a to a speed pattern generating section 14. The speed pattern generating section 14 compares the travel distance with a predetermined distance, generates a speed pattern 14a of a normal operation if the travel distance is short, and generates the speed pattern 14a of a partially low speed operation if the travel distance is long. The predetermined distance indicates a difference in height corresponding to a difference in air pressure that causes the Eustachian tube to open against ear block discomfort by a passenger. A speed control section 24 makes the car room 1 move up and down based on the speed pattern 14a.
    Type: Application
    Filed: June 13, 2008
    Publication date: May 12, 2011
    Applicant: MITSUBISHI ELECTRIC CORPORATION
    Inventor: Keigo Yamamoto
  • Patent number: 7931128
    Abstract: In an elevator device, a drive unit has a drive sheave, a motor for rotating the drive sheave, and a motor driving portion for driving the motor. The motor driving portion is controlled by a control unit. When a car is running, the control unit monitors a load on at least one component within the drive unit, and generates a control command regarding a running speed of the car in accordance with a state of the load, and outputs the control command to the motor driving portion.
    Type: Grant
    Filed: July 25, 2006
    Date of Patent: April 26, 2011
    Assignee: Mitsubishi Electric Corporation
    Inventors: Masaya Sakai, Takaharu Ueda
  • Patent number: 7921969
    Abstract: A method for restricting the output of an electrical drive and for protection of an elevator are provided. The electrical drive includes a motor as well as a power supply appliance of the motor. In the method for restricting the output of an electrical drive the stator voltage vector is restricted to its limit value restricting only the component of the stator voltages in the direction of the q axis. In the protection of an elevator, the elevator includes a machinery brake, a safety brake of the elevator car, and also an electrical drive. The protection method includes determination of at least one limit value, restriction of the output of the electrical drive on the basis of at least one determined limit value, and restriction of the movement of the elevator car on the basis of at least on determined limit value.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: April 12, 2011
    Assignee: Kone Corporation
    Inventors: Lauri Stolt, Tuukka Kauppinen
  • Patent number: 7913819
    Abstract: A set of elevators includes a plurality of elevators without counterweight, a power supply, and a common control system. The plurality of elevators has a common connection to the power supply. The common control system includes one or more instructions to prevent or delay dispatch of an elevator car stopped at a floor if, at that instant, within a set period of time, or at that instant and within the set period of time, power consumed from an associated electrical network by the set of elevators or fed into the associated electrical network by the set of elevators together exceeds a set value. A method for controlling a set of elevators includes determining whether power consumed together exceeds a set value, and when the power consumed exceeds the set value, then departure of a next elevator car to be dispatched is prevented or delayed.
    Type: Grant
    Filed: June 11, 2009
    Date of Patent: March 29, 2011
    Assignee: Kone Corporation
    Inventors: Marja-Liisa Siikonen, Janne Sorsa, Esko Aulanko