Abstract: Methods and systems of controlling elevators including detecting a landing stop for an elevator car, measuring load information associated with the stop, controlling stopping of the elevator at the landing using a machine based on at least one of the detected landing and the measured load information and performing dynamic compensation control of a motion state of the elevator with a computing system and the elevator machine. The dynamic compensation control includes receiving motion state information related to at least one motion state of the elevator car at the computing system, receiving the landing and load information at the computing system, applying a filter to the received information and generating a first control signal, and producing a control output from the first control signal to control the elevator machine to minimize oscillations, vibrations, excessive position deflections, and/or bounce of the elevator car at the detected landing.

Abstract: An on-running landing position evaluation method includes determining a deceleration period in an on-ground duration of a user who is running based on an acceleration value and calculating a travel distance in the determined deceleration period.

Abstract: In order to increase safety, a computer-implemented method is proposed for determining the position of a lift cabin in a lift shaft with the aid of a coding device, which comprises a code band as a marking, wherein the position is determined analytically by means of an algorithm on the basis of the code of the marking, wherein an extrapolated position is determined from the stored positions and the instant of the recording and, in turn, a coding pattern to be compared in relation to the recording is calculated by inverting the algorithm.

Abstract: An elevator includes a control system for monitoring the load of a car, which control system is adapted to prevent the normal starting of the elevator, optionally also including relevelling, when there is an overload in the car. The elevator includes at least one position measuring device, speed measuring device and/or movement measuring device in order to determine the movement and/or position of the car, and the control system of the elevator is adapted to remove the prevention of normal starting when at least one said position measuring device, speed measuring device and/or movement measuring device detects that the car moved or is moving upwards in the elevator shaft.

Abstract: A system and a method are provided for damping vertical oscillations of an elevator car hovering at an elevator landing. The system includes a sensor, a controller and an elevator machine connected to a traction sheave. The sensor is adapted to provide a sensor signal indicative of rotation of the traction sheave, wherein the rotation of the traction sheave corresponds to the vertical oscillations of the hovering elevator car. The controller is adapted to provide a control signal based on the sensor signal. The elevator machine is adapted to reduce the vertical oscillations of the hovering elevator car by controlling the rotation of the traction sheave based on the control signal.

Abstract: Embodiments are directed to calculating a current associated with a motor of an elevator based on an output of a speed regulator, and controlling the elevator based on the current. Embodiments are directed to examining a feeder current obtained via a converter current sensor of a regenerative drive during a peak power condition, and regulating a speed of an elevator based on the feeder current.

Abstract: The disclosure features a wireless power transmission system for an elevator that includes at least two wireless power sources disposed at intervals along a wall of an elevator shaft and coupled to a power supply, and at least one wireless power receiving device configured to be mounted to an exterior of an elevator cab and to be coupled to a load onboard the elevator cab, where during operation, the at least two wireless power sources are configured to generate an oscillating magnetic field to transfer wireless energy to the at least one wireless power receiving device.

Abstract: A brake, which includes a frame part of the brake, an armature part movably supported on the frame part, and attached to the frame part a limit switch, the switching state of which changes when movement is exerted on the limit switch in the operating direction of the limit switch. The brake also includes a measuring pin that is movably supported on the frame part of the brake and that is separate from the armature part, which measuring pin is connected to the limit switch.

Abstract: An elevator positioning system includes an optical tape, optical tape clips, and a sensor. The optical tape clips are mountable to various structures within the hoistway. A crossbar of the optical tape clips is located between a sensor and optical tape such that the sensor detects an interruption in the optical tape and signals the detection to an elevator controller. The elevator car can then be controlled to align evenly with the landings associated with the hoistway. Another elevator positioning system includes a sensor and a reflector clip assembly. The reflector clip assemblies are mountable to various structures within the hoistway. A reflector target of the reflector clip assemblies faces the sensor such that the sensor detects the reflector target and signals the detection to an elevator controller. The elevator car can then be controlled to align evenly with the landings associated with the hoistway.

Abstract: A floor position detection device of an elevator system includes a first sensor unit having a first Hall sensor and which is provided to detect at least one floor position characteristic, and an evaluation unit which is provided to evaluate the floor position characteristic for generating a floor signal. The sensor unit includes a second Hall sensor and the evaluation unit evaluates at least two floor position characteristics for generating the floor signal.

Abstract: A braking device for an elevator is disclosed. The device may include a motor, a braking system, a first switch, and a second switch. The motor may be capable of generating a counter-electromotive force. The braking system may move to a disengaged position upon being energized and may move to an engaged position upon being de-energized. The first and second switches may have an open state. In the open state, the switches electrically couple the motor to the braking system so that the counter-electromotive force of the motor may energize the braking system.

Abstract: An exemplary method of controlling elevator car position includes determining that an elevator car requires re-leveling and determining whether a vibration damper is activated. A gain for controlling operation of a motor responsible for moving the elevator car for the re-leveling is adjusted if the vibration damper is activated.

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.

Abstract: A building is provided with a plurality of service zones each including a plurality of floors, and elevators each assigned to the floors included in a corresponding one of the service zones as service floors. The service zones are provided such that the floors included in each of the service zones are at least partially different from the floors included in each of the other service zones. In an event of a fire in the building, an evacuation control apparatus for the elevators controls the elevators to convey those stranded in the building to a common evacuation floor.

Abstract: A fire evacuation operation system for group-controlled elevators that enables a large number of people to evacuate a building in a short time is provided. Safe elevators are provided for evacuation of the building according to the position of the floor on which the fire breaks out. The fire evacuation operation system includes an evacuation operation propriety judging unit that judges whether an evacuation operation is improper or possible, a rescue floor setting unit that sets a rescue floor, and an evacuation operation instruction unit that assists people who are present in the building to evacuate.

Abstract: A method and apparatus adjust the inter-car distance in a double-deck elevator provided with hoisting ropes, in which elevator the hoisting ropes move a car frame supporting the elevator cars along guide rails. The vertical inter-car distance between the elevator cars is adjusted by moving at least one of the elevator cars in relation to the car frame by pulling the elevator car to be moved upwards and lowering the elevator car to be moved downwards by an adjusting rope.

Abstract: A speed control method of an elevator-purpose comprising previously calculating an elevating distance in such a case that the elevator passenger car is decelerated from a reference frequency up to a leveling frequency in a constant deceleration speed, when the induction motor is stopped. The elevator passenger car is driven in a constant speed at an intermediate frequency so that the previously calculated distance becomes equal to an elevating distance when the elevator passenger car is decelerated at the constant deceleration speed from an arbitrary frequency up to the leveling frequency so as to adjust the elevating distance. The elevator passenger car is automatically decelerated at the constant deceleration speed up to the leveling frequency.

Abstract: An elevator car and counterweight system is provided with a variable drag element. The variable drag element is controlled such that the lower of the counterweight and the car has a higher drag against further movement. In an embodiment which is particularly useful in a 2:1 roping system, the sheaves (54, 58) associated with the counterweight (56) and the car (60) receive a braking/drive motor (62, 64) to provide the variable drag. While the present invention provides the variable drag to compensate for vertical differences between the counterweight and car, the invention can also be utilized to hold the car at a particular floor. Further, this invention can be utilized to address a counterweight or car jump situation. Another disclosed drag element may be a magnetizable member (40, 33) guided along a guide rail (34, 36) for each of the car (32) and the counterweight (38). A control controls the magnetic force associated with the guide elements to hold the car or prevent counterweight jump.

Abstract: The present invention provides an elevator position compensation system which minimizing the re-leveling of an elevator car in an elevator shaft. The elevator car is suspended in the shaft by an elevator cable system and elevator motor, wherein the elevator position compensation system includes an elevator load sensor device for determining the weight of the elevator car, and generating a load signal indicative of the determined weight. An elevator position sensor determines the position of the elevator car in the elevator shaft and generates a position signal indicative of the determined elevator car position. An elevator control system receives the load signal and the position signal, which is processed by the control system in order to calculate a change in the cable system length associated with a load change within the elevator car, and wherein the calculated change in the cable system length is compensated by the elevator motor.

Abstract: A forklift safety sensor and control system for preventing unsafe wear on the bottom surface of the fork. A fork height sensor detects when the fork is below a predefined threshold height at which the bottom surface is in close proximity to the ground or is in contact with the ground. The sensor sends a height signal to a system controller. In response, the controller sends a lockout signal to a lockout device, which prevents the forklift's drive mechanism from moving the forklift relative to the ground. The controller may also send an alert to the driver. When the fork is raised above the threshold height, the lockout is removed.

Abstract: A multi-deck cage has a deck floor with a ramp drive for fine positioning. The deck floor is configured as a ramp rotatable about a rotary axle and is movable up and down by means of actuators of the ramp drive. A sensor, which locates a mark arranged at a story sill, is arranged at a deck sill which is constructed as part of the deck floor. If the sensor has, at a stopping of the multi-deck cage at the story, travelled past the mark, the ramp drive is activated in a direction opposite to the travel direction of the multi-deck cage past the story stop until the sensor and the mark are disposed at the same level.

Abstract: A multi-deck cage has a deck floor with a ramp drive for fine positioning. The deck floor is configured as a ramp rotatable about a rotary axle and is movable up and down by means of actuators of the ramp drive. A sensor, which locates a mark arranged at a story sill, is arranged at a deck sill which is constructed as part of the deck floor. If the sensor has, at a stopping of the multi-deck cage at the story, travelled past the mark, the ramp drive is activated in a direction opposite to the travel direction of the multi-deck cage past the story stop until the sensor and the mark are-disposed at the same level.

Abstract: A system of sensing elevator car position is presented that dynamically compensates for problems due to frictional slippage of its mechanical connection and/or building settlement. The system comprises an elevator car within an elevator hoistway. An encoder is mounted within the elevator hoistway and mechanically connected to the elevator car. The mechanical connection drives the encoder which generates data indicative of the position of the elevator car. Either one of a position sensor and a position sensor actuator is mounted to a landing of the hoistway. The other one of the position sensor and position sensor actuator is mounted to the elevator car. The position sensor generates data indicative of the elevator car floor reaching a predetermined distance from the elevator landing when actuated by the position sensor actuator. An elevator position controller receives the data generated by both the position sensor and the encoder.

Abstract: A pallet positioner includes a support frame that consists of a main upright structure with a pair of spaced, parallel outriggers extending horizontally at ground level. The distal ends of the outriggers are connected by a low-profile ramp. The upright structure includes a pair of vertical guide masts rigidly mounted on a horizontal base bracing the proximal ends of the outriggers. A pneumatically and hydraulically controlled, or electrically and hydraulically controlled, cantilevered carrier with a rotatable platform is mounted for vertical motion along the vertical guide masts. When the carrier travels downward, the carrier stops automatically at a level above the outriggers and must be manually restarted. A braking system under the platform prevents rotation thereof at ground level.

Abstract: In a position controlling apparatus and method for an elevator which controls a position of an elevator in accordance with a velocity command profile consisting of an acceleration region, a uniform velocity region and a deceleration region, a position controlling apparatus and method according to the present invention controls generation of a synchronization position error in the deceleration region.

Abstract: To decelerate an elevator to a floor, the position of the elevator is determined and this data is used to calculate a required deceleration value with which the speed and deceleration of the elevator are reduced to zero upon reaching the floor and the deceleration changes by the amount of a constant jerk during the final round-off. A deceleration reference value is repeatedly compared with the required deceleration value determined on the basis of the position data, and the deceleration reference value is changed towards the required deceleration value based on the position data. During deceleration, the system is monitored to establish the point of time when the conditions for starting the final round-off are valid, and the final round-off is started accordingly. After the starting point of the final round-off, a speed reference value is determined using a jerk that fulfills the carting conditions.

Abstract: A safety device in a lift system comprising a cabin moveable along a shaft for moving the cabin in the event of a fault of the main lifting system. The safety device includes a platform located below the base of the lift cabin. Further, engagement apparatus selectively renders the platform integral with the lift shaft and lifting apparatus lifts the cabin in respect of the platform.

Abstract: A normal terminal stopping device (NTSD) using terminal zone position checkpoint detection with a binary coding method to identify a checkpoint within a terminal zone, and a digital shaft encoder mounted on the shaft of the hoist motor to determine a car position relative to a target stopping point. A microprocessor-based controller is used to compare a velocity command signal to a velocity limit reference. If the velocity command exceeds the velocity limit, the NTSD functions will take over to cause the elevator car to decelerate at the NTSD rate. In particular, the velocity limit reference is computed according to lead compensation and curve shaping techniques to attain better drive tracking characteristics of the motion controller. Binary coded checkpoints are used to eliminate error introduced in a car position derived from a motor shaft digital encoder.

Abstract: A cage stop height readjusting apparatus for an elevator system and a method thereof which are capable of accurately stopping a cage at a predetermined floor at a zero level of a cage stop height. The apparatus includes a position detection rotary encoder for outputting second pulse signal which corresponds to an actual running distance of a cage as a pulley is rotated by a wirET.

Abstract: An elevator car position detecting apparatus includes plates arranged at selected operation points defined along the elevator path, in such arrangement that one operation point is distinguishable from another operation point. Position detectors are provided on a car so that as car moves past the operation points the position detectors communicate with corresponding plates without contacting the plates. The position detectors associated with the corresponding plates generate signals indicating that the elevator car has reached the corresponding position.

Abstract: A procedure for determining the position of an elevator car in which the code data contained in code units mounted in the building is read by means of a code data detector unit (4) in such manner that a code unit containing floor data and door zone data is mounted essentially close to the threshold of the landing door on each floor and that the detector unit reading the floor data and door data is mounted essentially close to the threshold of the car.

Abstract: A linear induction motor for opening and closing elevator car doors in an elevator system includes a motor primary fixedly attached to a door hanger and a motor secondary flexibly mounted to a header bracket of the elevator car. A pair of swivel joints secure the ends of the motor secondary to the header bracket. The swivel joints compensate for misalignment and twisting of the elevator car doors by allowing multi-dimensional movement of the motor secondary relative to the header bracket.