Abstract: A method of monitoring a location of a conveyance apparatus within a conveyance system including: detecting a first location of the conveyance apparatus at a first time using a position reference system; detecting a second location of the conveyance apparatus at a second time using at least one of a pressure sensor located on the conveyance apparatus and an acceleration sensor located on the conveyance apparatus; and determining that the second location is equivalent to the first location if the second time is within a selected range of the first time.

Abstract: A method of monitoring a conveyance apparatus within a conveyance system is provided. The method including: obtaining a starting location position probability distribution of the conveyance apparatus within the conveyance system; detecting motion of the conveyance apparatus away from the probable starting location for a period of time; determining a distance traveled by the conveyance apparatus during the period of time; determining a direction of motion of the conveyance apparatus during the period of time; and determining a probability of the conveyance apparatus being at each of a plurality of possible destination locations at a conclusion of the period of time in response to the starting location position probability distribution and at least one of the distance traveled, the direction of motion, and the period of time.

Abstract: Disclosed is an elevator control system configured to control movement of an elevator car (12) along an elevator hoistway (26) between a starting position and a destination position (L2), the control system comprising a car holding position monitoring unit configured to monitor whether the elevator car (12) has moved upwards or downwards in the hoistway (26) during a holding period (68) where the car (12) was intended to remain stationary at the destination position (L2).

Abstract: A method for operating an electronically controllable air spring system having air springs includes ascertaining a vehicle velocity of a vehicle and performing a procedure of monitoring a loading procedure and/or a procedure of monitoring an unloading procedure if the vehicle velocity indicates that the vehicle is at a standstill. The method further includes suppressing a level control procedure via the air spring system for a determined time period if at least one pressure difference that is allocated to the air springs exceeds the respective loading pressure limit difference or undercuts the unloading pressure difference and/or a loading criterion or an unloading criterion are met.

Abstract: Elevator systems having an elevator car within an elevator shaft are described. The systems include a plurality of landing doors located at respective landings within the elevator shaft with at least one landing positioning element installed within the elevator shaft and positioned relative to at least one landing door. An inspection system is configured with a detector located on the elevator car and arranged to detect the presence of the landing positioning element in an inspection region to determine if a position of the elevator car relative to the landing door is within a predetermined range.

Abstract: A method for controlling an elevator includes controlling the speed of a vertically moving elevator car during its run from a starting landing to a destination landing according to speed settings, the speed settings defining a constant target speed for the elevator car. The method includes obtaining measurement data of the ongoing run, which measurement data describes vertical speed and/or vertical acceleration of the vertically moving elevator car, determining whether the measurement data meets one or more predetermined criteria indicating unintended vertical speed and/or unintended vertical acceleration, and changing the speed settings of the current run by lowering the constant target speed from a first constant target speed to a second constant target speed if the measurement data meets said one or more predetermined criteria, continuing the run without intermediate stops to said destination landing. An elevator is provided to implement the method.

Abstract: A monitoring system for people-transporting systems, which systems are in the form of an elevator, escalator or moving walkway, includes at least one interrogation device and at least one safety switch that is connected to the interrogation device via an electrical safety circuit and is used for monitoring an equipment of the people-transporting device. A current direction-dependent unit is arranged in the electrical safety circuit. Furthermore, the interrogation device applies a test voltage with an alternating polarity to the electrical safety circuit. Furthermore, a people-transporting system having such a monitoring system is provided.

Abstract: An elevator controller may include a memory configured to store acceleration data therein; and a processor configured to, register a passenger-specific destination call, the passenger-specific destination call including destination information indicating a destination floor of a passenger, receive passenger acceleration data indicating a vertical acceleration of the passenger in one of a plurality of elevator cars, compare elevator acceleration data of the plurality of elevator cars departing a floor with the passenger acceleration data, determine whether a correlation exists between the passenger acceleration data and the elevator acceleration data of a detected one of the plurality of elevator cars, and guide the detected one of the plurality of elevator cars that has left a floor to the destination floor according to the passenger-specific destination call, if the processor determines that the correlation exists.

Abstract: An elevator device automatically setting a current value of an interval between upper and lower cars vertically movable inside a car frame, including: a moving mechanism vertically moving the cars; a memory storing a current interval between the cars; a car interval change quantity detector detecting a change quantity of the interval between the cars; an adjustment mechanism adjusting the interval between the cars based on the stored car interval and the detected change quantity of the interval; an initial car interval detector detecting that the interval between the cars has reached an initial car interval; and a learning mechanism causing the moving mechanism to vertically move the cars until the initial car interval detector detects that the interval between the cars has reached the initial car interval to learn the car interval when the car interval is not stored in the memory, which is then stored in the memory.

Abstract: In an elevator apparatus, a plurality of storage media are arranged in a hoistway so as to be spaced from one another in a hoisting direction of a car. In the car, reading device that reads information stored in the storage media is mounted. The storage media are arranged in the hoisting direction at intervals different from one another. A safety monitor is configured to: execute an operation for detecting two storage media; measure an interval between the detected storage media based on a signal from movement detector; compare the measured interval between the storage media with stored intervals of the storage media: and to grasp the position of the car by using a result of the comparison and the information of the storage media, when a position of the car cannot be grasped.

Abstract: A resistance calculation activator determines whether or not an electric car is stopped on the basis of a drive command signal and an external signal, and activates a resistance calculator if a powering command is input as the drive command when it is determined that the electric car is stopped. The activated resistance calculator computes, within a resistance calculation period, a resistance value of an AC motor that produces driving force for the electric car, on the basis of a d-axis voltage command value and a d-axis current value supplied to the AC motor.

Abstract: An elevator moves through a hoistway with one or more sensors positioned so that they pass by one or more targets that are in fixed positions relative to the hoistway. As they pass, an inductive current is generated, giving the elevator's control circuitry precise information as to the vertical position of the elevator car. The control system adjusts the raising and/or lowering of the elevator car based on that position information and any discrepancy between it and the supposed position at which the control system had believed the car was. Discrepancies are accumulated over time as an indication of cable stretch, and when the stretch exceeds a particular threshold, an alarm is raised for maintenance. The control system also defines a “door zone” around each landing where, based on the precise height measurement achieved herein, it is safe under the circumstances to open the doors of the car.

Abstract: A hoist for vehicles having two lifting columns arranged at both sides of a vehicle, each having two support arms that are supported in a horizontally pivotal and longitudinally adjustable fashion at their lifting column, and each having at their free end a support plate. These support plates are positionable at support positions underneath a vehicle as specified by the vehicle manufacturer by an appropriate movement of the support arm. The manufacturer support positions are saved as target positions according to corresponding vehicle model in a data memory of the hoist, and coordinates of actual positions of the support plates are determined by measurements and perhaps calculations. A computer makes a comparison between the target and actual coordinates, and enables a lifting process of the support arms only when differences between the target and the actual coordinates are within a predetermined tolerance.

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.

Abstract: The invention relates to a safety arrangement of an elevator system and to a method for ensuring safety in an elevator system. The safety arrangement comprises at least one mechanical stopping appliance and the control of the safety arrangement comprises at least one limit value that sets the speed, deceleration or permitted vertical distance from the door zone of the elevator car. In the method for ensuring safety in an elevator system at least one mechanical stopping appliance is fitted to the safety arrangement of the elevator system and at least one limit value that sets the speed, deceleration or permitted vertical distance from the door zone of the elevator car is set for the control of the safety arrangement.

Abstract: An elevator installation includes an elevator cage carrier movable in a travel space provided for travel of the elevator cage carrier. Moreover, a first elevator cage and a second elevator cage are adjustably arranged at the elevator cage carrier and a drive unit arranged at the elevator cage carrier. In addition, an adjusting device with a first traction means and a second traction means guided in opposite directions around a drive roller, drivable by the drive unit, is provided. In that case the spacing between the first elevator cage and the second elevator cage is adjustable by movement of the elevator cages in opposite directions. An adaptation to different story spacings is thereby possible.

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 exemplary method of controlling elevator car position includes determining that an elevator car required re-leveling. Elevator car dynamics information associated with a current position of the elevator car is determined. A gain for controlling operation of a motor responsible for moving the elevator car for the re-leveling is adjusted based on the determined elevator car dynamics information.

Abstract: An exemplary method of controlling elevator car position includes determining that an elevator car required re-leveling. Elevator car dynamics information associated with a current position of the elevator car is determined. A gain for controlling operation of a motor responsible for moving the elevator car for the re-leveling is adjusted based on the determined elevator car dynamics information.

Abstract: A method and a system for the positioning of the elevator car and the door of the elevator in the condition monitoring system are provided. In the method the accelerations of the elevator car and the door of the elevator are measured with a sensor. By integrating the acceleration information two times in relation to time the position information is determined. When the condition monitoring system detects a fault, forecasts a malfunction occurring in the future or detects a significant change in the operation of the elevator or in the measuring signals related to the elevator, it is possible to attach to this information the location of the fault or event i.e. the position of the elevator or the position of a door of a certain floor level on the slide path. The position information can be synchronized to a separate reference point by means of a positioned switch by making an adjustment to the position information at the reference point.

Abstract: Method for performing an elevator rescue run in an emergency situation, the elevator comprising and elevator car, a counter weight, a rope suspending the car and the counterweight, a drive motor, an emergency brake for stopping the car in an emergency situation, and a motor drive unit for supplying drive power to and for controlling the drive motor, having the following rescue run sequence steps: (a) operating the motor drive unit in a zero speed demand mode for holding the car at its present position; (b) lifting the brake, while holding the car in the zero speed demand mode; (c) determining the preferred movement direction of the car based on the power data as obtained by the motor drive unit; and (d) performing the rescue run in the direction of the determined preferred movement direction.

Abstract: The invention provides for a lifting and/or stabilising device (1, 100, 200) for vehicles in general, comprising: a fixing element (2) for anchoring the device to the vehicle; lifting means (3) provided with an actuator (6) suitable for moving a supporting element (5) along a lifting axis (7) to lift the vehicle; articulation means (4) suitable for allowing the lifting means (3) to move from one first folded position, in which the lifting axis (7) is not square to the ground (S), to a second work position in which the lifting axis (7) is in a position substantially square to the ground (S). The device (1, 100, 200) furthermore comprises connection means (8) suitable for rigidly connecting the lifting means (3) to the fixing element (2) during lifting of the vehicle. The invention furthermore concerns a relative vehicle lifting and/or stabilising system and process.

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: A method and an apparatus controls advance opening of doors in a double-deck elevator, in which elevator a car frame supporting the elevator cars is moved by means of a set of hoisting ropes by a hoisting machine provided with a traction sheave. When the elevator is approaching the target floor levels, the velocity of the elevator cars in the car frame in relation to the car frame is measured and, based on the measurement result, the velocity of the elevator cars relative to the floor levels is calculated.

Abstract: An elevator installation with at least one car includes at least one device for determining a position of the car and a method of operating such an elevator installation. The position determining device has a code mark pattern and a sensor device. The code mark pattern is arranged along the length of travel of the car and consists of a multiplicity of code marks. The sensor device is mounted on the car and has sensors contactlessly scanning the code marks. The code marks are arranged in a single line and the sensor device comprises at least two sensor groups which are separated from each other perpendicular to the line of the code marks, which makes reading the code marks possible even if there are lateral displacements between the sensor device and the line of the code marks.

Abstract: Elevator (2) comprising a car (4), a counterweight (6), a hoisting rope (8) for suspending the car (4) and the counterweight (6), a drive motor (10), a motor drive unit (26) for supplying the power to the drive motor (10), and a brake (18) for stopping the movement of the car (4) in an emergency situation, the elevator (2) further comprising an elevator rescue system (40), comprising an emergency power supply (42), an emergency brake switch (44) for connecting and disconnecting the power of the emergency power supply (42) to the brake (18), and an emergency drive switch (46) for connecting and disconnecting the power of the emergency power supply (42) to the drive motor (10), characterised in that the elevator rescue system (40) further comprises the motor drive unit (26) and a power line (74) connecting the emergency power supply (42) with the motor drive unit (26) and including the emergency drive switch (46).

Abstract: The present invention presents a method and a system for the positioning of the elevator car and the door of the elevator in the condition monitoring system. In the method the accelerations of the elevator car and the door of the elevator are measured with sensors. By integrating the acceleration information two times in relation to time the position information is determined. When the condition monitoring system detects a fault, forecasts a malfunction occurring in the future or detects a significant change in the operation of the elevator or in the measuring signals related to the elevator, it is possible to attach to this information the location of the fault or event i.e. the position of the elevator or the position of a door of a certain floor level on the slide path. The position information can be synchronized to a separate reference point by means of a positioned switch by making an adjustment to the position information at the reference point.

Abstract: An apparatus for measuring a position of a moveable platform includes a plurality of transponder modules. The transponder modules include an electromagnetic transmitter adapted to emit an electromagnetic signal, and an acoustic receiver adapted to receive an acoustic signal. At least two of the plurality of transponders are disposed about the position to be measured. The apparatus also includes at least one transceiver module affixed to the moveable platform, which transceiver modules includes an acoustic transmitter adapted to emit an acoustic signal, an electromagnetic receiver adapted to receive an electromagnetic signal. The apparatus also includes a timing mechanism for measuring a plurality of durations between an emission of the acoustic signal and a receipt of the electromagnetic signal, and a computing mechanism for processing the plurality of durations to compute the position.

Abstract: An emergency escape apparatus for elevator is disclosed. In response to power outage manually pulling an actuation rope will pivot a pivot bar counterclockwise to rotate front and rear cams, press front and rear cams onto front and rear actuation members respectively, lower a pinion to be in mesh with a gear on a front of a drive sheave, press pressing rollers onto hoist ropes, activate a bar member to deactivate a brake, close a switch, and activate a backup motor to turn the pinion and the drive sheave through the gear, thereby lowering a car until a safe floor is reached. In another operation speeding the car will automatically enable an electromagnetic actuator to pull the actuation rope and activate a main motor to lower the car.

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 method and apparatus for stopping an AC motor that is controlling a load while detecting mechanical brake slippage of a mechanical brake for holding the load against movement includes a controller for decreasing torque-producing current commands from the drive while a speed regulator is commanding zero speed, sensing movement of the load while the speed regulator is commanding zero speed, detecting movement of the load past a pre-determined distance limit, and increasing torque to support the load and prevent further movement of the load. The controller will again decrease torque-producing current commands from the drive, and again checking for movement of the load, and upon sensing no load movement upon reaching zero torque, then shutting off the motor.

Abstract: A multi-stage elevator car has equipment for fine positioning of the cars wherein the car thresholds are positionable at the level of the floor thresholds. The fine positioning adjusting equipment operates on the principle of a double lever and moves a car frame along a path (?z).

Abstract: A multi-stage elevator car has equipment for fine positioning of the cars wherein the car thresholds are positionable at the level of the floor thresholds. Adjusting equipment operating on the principle of a differential block and pulley is provided for fine positioning of the cars, the equipment including an endless cable guided over deflecting rollers arranged at the main frame of the multi-stage car and over deflecting rollers arranged at the cars, wherein the cars execute vertical movements of opposite sense.

Abstract: An emergency moving device of an elevator includes a reduction gear, several first gears coupled to a shaft of the reduction gear, a first connector releasably coupled to the car, a second connector affixed to the car and releasably coupled to the first connector, a fall-prevention device releasably coupling the first connector to the second connector, and chains respectively connected to the first connector and engaging the first gears. The first connector is coupled to the steel ropes used for vertically displacing the elevator car. When the car is stopped between floors by a power failure, the passengers press an emergency button to uncouple the first connector from the second connector, so that the car is allowed to move downwardly relative to the first connector until it arrives at a next floor with the reduction gear reducing speed of the car.

Abstract: An emergency lifting or lowering device of an elevator includes a transmission toothed wheel fitted to a top of a passage receiving a carriage of the elevator. The transmission wheel has teeth locking into an adjacent one of several toothed wheels arranged in a low. The toothed wheels are each associated with a reeling member having first end portions of steel ropes of the elevator wound therearound. The emergency lifting or lowering device further has an emergency switch disposed in the carriage member, and electrically connected to an emergency power to activate the transmission wheel in order to lift or lower the carriage member to a nearest floor when a main motor of the elevator stops due to power failure.

Abstract: A double-deck elevator includes a winch (6), an upper car (2), a lower car (3), a car support frame 1 supporting the upper and the lower car (2, 3), a car space adjusting device (4) capable of adjusting the space between the upper and the lower car (2, 3), and an emergency operation controller (12). When the car space adjusting device (4) is unable to operate normally, the emergency operation controller (12) operates the winch (6) to move the car support frame (1) such that the upper and the lower car (2, 3) are located sequentially at positions corresponding to adjacent floors, respectively.

Abstract: A velocity instruction generating apparatus for a car of an elevator system and a velocity instruction generating method which make it possible to decrease a computation time, computation amount and computation error by computing a velocity instruction based on an integer number computation and control the velocity of the car in real time.

Abstract: The present invention relates to a leveling control device for an elevator system which estimates a load torque applied to an axis of an alternating current motor on the basis of a torque current component and a rotation angle of the alternating current motor, while carrying out a level compensation operation, and which compensates the torque current component for the difference between the estimated load torque and the load compensation torque by an output signal from a load detector, which results in an improved speed control property in the level compensation operation of the elevator system.

Abstract: An elevator landing apparatus including a detector mounted on one of a doorsill part of a cage of an elevator provided in an elevator shaft and a doorsill part of an elevator hall, and a detected member mounted on the other of the doorsill part of the elevator hall and the doorsill part of the cage. The detector and detected member are configured to position the cage at a position where the doorsill part of the elevator hall and the doorsill part of the cage are flush with each other when the detector and the detected member are opposite each other. The one of the detector or the detected member provided on the doorsill part of the cage is mounted along a side of the cage and facing toward a side of the elevator shaft.

Abstract: An elevator rescue system includes a power source of back-up electrical power. A manually-operated, rescue enable switch switchably permits the transmission of electrical power from the power source to a motor brake coil of an elevator car during a rescue operation such that the energized coil releases the motor brake to move the car to a desired landing. A speed detector measures the speed of the elevator car and thereupon generates a speed control signal corresponding to the speed of the car. An overspeed detection circuit has a first input for being actuated when receiving electrical power from the power source, a second input for receiving the speed control signal, and an output for transmitting electrical power to the motor brake coil when the speed control signal is below a predetermined value and for automatically stopping the transmission of electrical power when the speed control signal becomes higher than a predetermined value. A manually-operated brake release switch has an input and an output.

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 method and an apparatus for controlling an elevator is equipped with a deck-distance drive machine which by reference to positional information adjusts the distances between the individual cars in a common car sling in such a way that each car can stop at the corresponding floor accurately, i.e. without forming a step. Measured values of floor position are stored in memories and periodically updated so as to detect any changes such as, for example, building settlement. Based on this data the necessary deck-distances are calculated which are necessary for all the cars to stop without any of them forming a step. Furthermore, the method and the device can be correspondingly extended for a multi-decker elevator and for any type of control (conventional control, destination call control, etc.).

Abstract: An emergency stop state releasing method for an elevator, which includes a cage configured to ascend and descend along a first guide rail in an elevator shaft, a counterweight configured to ascend and descend along a second guide rail in the elevator shaft, a cable for suspending the cage and the counterweight, a drive unit in the elevator shaft for driving the cable to move the cage up and down in the elevator shaft, and an emergency stop mechanism attached to the cage and configured to engage the guide rail, thereby urgently stopping the cage, and to lift the cage, thereby canceling an emergency stop state, including the steps of setting a removable winding device in the elevator shaft, and driving one of the cage and the counterweight by means of the winding device to lift the cage and cancel the emergency stop state.

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 method of adjusting an elevator speed comprising the steps of determining a desired creep period, determining an actual creep period, determining a difference between the desired creep period and the actual creep period, determining a deceleration time for minimizing the difference between the desired creep period and the actual creep period, and adjusting the elevator speed in response to the deceleration time.

Abstract: An elevator is provided with floor arrival correction control which monitors the elapsed time following completion of the previous floor arrival correction. If the time elapsed is less than a fixed time (102), the elevator car is controlled with a standard floor arrival control speed pattern (103, 52), if it is greater than the fixed time, the next floor arrival-corrected operation is compared with the direction of operation for the previous correction (104). If the same, the car has not yet arrived in the door zone (e.g., because the car is heavily loaded) and the car is controlled with an increased speed pattern (105, 51). If not the same, the car has overrun the door zone and it is controlled with a reduced speed pattern (106, 53).

Abstract: The invention relates to a procedure for stopping an elevator car at a landing, in which procedure the travelling velocity and position of the elevator in the shaft are measured and a distance from the landing, i.e. a deceleration point at which deceleration is started, is determined for one travelling velocity, i.e. a reference velocity. According to the invention, the deceleration point is changed in proportion to the difference between the measured travelling velocity and the reference velocity.

Abstract: An apparatus for determining if an elevator car is level with respect to a landing comprises: a first magnet disposed proximate to the landing; a second magnet disposed proximate to the landing; a sensor for providing a level signal in response to detecting a minimum flux region formed by the first and second magnets; and a processor for determining if the elevator is level with respect to the landing in response to the level signal. Each magnet has a first and second magnetic pole. The first and second magnets are adjacently aligned such that the first magnetic pole of the first magnet is adjacent to the first magnetic pole of the second magnet, and the second magnetic pole of the first magnet is adjacent to the second magnetic pole of the second magnet.

Abstract: A load compensation calibration method for an elevator controller includes the steps of moving an elevator car in a first direction, the first direction a first creep speed region; determining the time to travel a given distance; during the first run; determining a first actual creep speed of the first creep speed region; determining a difference between a dictated creep speed and the first actual creep speed; determining a first compensation frequency for minimizing the difference between the dictated creep speed and the first actual creep second; moving the elevator car in a second direction, the speed direction including a second creep speed region; determining the time to travel a given distance during the second run; determining a second actual creep speed of the second creep speed region; determining a difference between a dictated creep speed and the second actual creep speed; determining a second compensation frequency for minimizing the difference between the dictated creep speed and the second actua

Abstract: Whenever the elevator cage (2) enters a landing zone at each target stop floor, the landing zone calculator (32) generates discriminate signals (32b, 32c, 32d) indicative of whether the cage lands from a normal distance or from one of abnormal distances (far away or not far away from the normal distance) detected by limit switches (27 to 30). Then, the landing pattern generator (34) calculates a landing pattern representative of the reference speed proportional to a distance from the current position to the target stop position of the motor shaft on the basis of the output of the landing zone calculator (32) and the detected motor shaft position. Therefore, whenever the moving cage enters the landing zone, the cage is controlled in such a way that the cage speed can be reduced gradually with the approach of the motor shaft angular position to a target stop angular position thereof.