Controlling a drive motor of an elevator installation
First Claim
1. An elevator method, comprising:
- determining, for an elevator cage in an elevator installation, a movement profile of the elevator cage for movement of the elevator cage to a destination stopping point position in the elevator installation, the determining being based at least in part on an anticipated slip between a drive pulley and a support coupled to the elevator cage;
detecting a movement of the elevator cage based at least in part on signals of a rotary encoder coupled to the drive pulley or to a drive motor; and
during the movement of the elevator cage, controlling the drive motor based at least in part on the signals of the rotary encoder and the movement profile.
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Accused Products
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.
16 Citations
18 Claims
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1. An elevator method, comprising:
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determining, for an elevator cage in an elevator installation, a movement profile of the elevator cage for movement of the elevator cage to a destination stopping point position in the elevator installation, the determining being based at least in part on an anticipated slip between a drive pulley and a support coupled to the elevator cage; detecting a movement of the elevator cage based at least in part on signals of a rotary encoder coupled to the drive pulley or to a drive motor; and during the movement of the elevator cage, controlling the drive motor based at least in part on the signals of the rotary encoder and the movement profile.
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2. An elevator method, comprising:
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determining, for an elevator cage in an elevator installation, a movement profile of the elevator cage for movement of the elevator cage to a destination stopping point position in the elevator installation, the determining being based at least in part on an anticipated slip between a drive pulley and a support coupled to the elevator cage; detecting a movement of the elevator cage based at least in part on signals of a rotary encoder coupled to the drive pulley or to a drive motor; during the movement of the elevator cage, controlling the drive motor based at least in part on the signals of the rotary encoder and the movement profile; determining an actual travel distance between an instantaneous elevator cage position and the destination stopping point position; and determining a slip-corrected travel distance based at least in part on the actual travel distance and the anticipated slip between the drive pulley and the support, wherein the movement profile is determined based at least in part on the slip-corrected travel distance and is determined for travel of the elevator cage from the instantaneous cage position to the destination stopping point position. - View Dependent Claims (3)
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4. An elevator method, comprising:
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determining, for an elevator cage in an elevator installation, a movement profile of the elevator cage for movement of the elevator cage to a destination stopping point position in the elevator installation, the determining being based at least in part on an anticipated slip between a drive pulley and a support coupled to the elevator cage; detecting a movement of the elevator cage based at least in part on signals of a rotary encoder coupled to the drive pulley or to a drive motor; during the movement of the elevator cage, controlling the drive motor based at least in part on the signals of the rotary encoder and the movement profile; wherein the destination stopping point position is one of a plurality of stopping point positions in the elevator installation, the stopping point positions comprising respective stopping point markings, the stopping point markings being detectable by at least one stopping point sensor coupled to the elevator cage, the stopping point markings having a dimension at least twice as long as a stopping distance for the elevator cage.
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5. An elevator method, comprising:
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determining, for an elevator cage in an elevator installation, a movement profile of the elevator cage for movement of the elevator cage to a destination stopping point position in the elevator installation, the determining being based at least in part on an anticipated slip between a drive pulley and a support coupled to the elevator cage; detecting a movement of the elevator cage based at least in part on signals of a rotary encoder coupled to the drive pulley or to a drive motor; during the movement of the elevator cage, controlling the drive motor based at least in part on the signals of the rotary encoder and the movement profile; moving the elevator cage from an instantaneous elevator cage position to a stopping marking point of an intermediate stopping point position or a stopping marking point of the destination stopping point position; after reaching the stopping marking point of the intermediate stopping point position or the stopping marking point of the destination stopping point position, correcting a registered elevator cage position; and after reaching the stopping marking point of the intermediate stopping point position or the stopping marking point of the destination stopping point position, correcting the movement profile of the elevator cage based at least in part on a residual distance to the destination stopping point position.
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6. An elevator method, comprising:
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determining, for an elevator cage in an elevator installation, a movement profile of the elevator cage for movement of the elevator cage to a destination stopping point position in the elevator installation, the determining being based at least in part on an anticipated slip between a drive pulley and a support coupled to the elevator cage; detecting a movement of the elevator cage based at least in part on signals of a rotary encoder coupled to the drive pulley or to a drive motor; during the movement of the elevator cage, controlling the drive motor based at least in part on the signals of the rotary encoder and the movement profile; performing a learning trip of the elevator cage, the performing the learning trip comprising determining stopping point position values for one or more stopping points in the elevator installation. - View Dependent Claims (7, 8, 9, 10)
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11. An elevator method, comprising:
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determining, for an elevator cage in an elevator installation, a movement profile of the elevator cage for movement of the elevator cage to a destination stopping point position in the elevator installation, the determining being based at least in part on an anticipated slip between a drive pulley and a support coupled to the elevator cage; detecting a movement of the elevator cage based at least in part on signals of a rotary encoder coupled to the drive pulley or to a drive motor; during the movement of the elevator cage, controlling the drive motor based at least in part on the signals of the rotary encoder and the movement profile; determining a first value for a defined travel distance between a start stopping point and a destination stopping point based on a first set of signals from the rotary encoder;
determining a second value for the defined travel distance based on a start stopping point position value and a destination stopping point position value;
determining a cage loading range for the elevator cage;
storing a quotient of the first and second values as an actual value slip factor, the actual value slip factor being stored in association with the cage loading range. - View Dependent Claims (12, 13)
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14. An elevator method, comprising:
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determining, for an elevator cage in an elevator installation, a movement profile of the elevator cage for movement of the elevator cage to a destination stopping point position in the elevator installation, the determining being based at least in part on an anticipated slip between a drive pulley and a support coupled to the elevator cage; detecting a movement of the elevator cage based at least in part on signals of a rotary encoder coupled to the drive pulley or to a drive motor; during the movement of the elevator cage, controlling the drive motor based at least in part on the signals of the rotary encoder and the movement profile; determining an updated movement profile of the elevator cage based on a current load-dependent slip factor.
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15. An elevator installation comprising:
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an elevator cage disposed in a shaft;
a drive pulley;a support coupled to the elevator cage and to the drive pulley; a rotary encoder coupled to the drive pulley or to a drive motor; and an elevator control unit, the elevator control unit being configured to, receive a movement profile of the elevator cage for a movement of the elevator cage to a destination stopping point position in the shaft, the movement profile being based at least in part on an anticipated slip between the drive pulley and the support, detect a movement of the elevator cage based at least in part on signals of the rotary encoder, and during the movement of the elevator cage, controlling the drive motor based at least in part on the signals of the rotary encoder and the movement profile.
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16. An elevator system component, comprising:
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at least one processor; a memory having stored therein instructions which, when executed by the processor, cause the processor to, determine, for an elevator cage in the elevator installation, a movement profile of the elevator cage for a movement of the elevator cage to a destination stopping point position in the elevator installation, the determining being based at least in part on an anticipated slip between a drive pulley and a support coupled to the elevator cage, detect a movement of the elevator cage based at least in part on signals of a rotary encoder coupled to the drive pulley or to a drive motor, and during the movement of the elevator cage, control the drive motor based at least in part on the signals of the rotary encoder and the movement profile.
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17. Method of controlling a drive motor of an elevator installation, wherein an elevator cage can be moved along a travel path by the drive motor by way of a drive pulley and at least one flexible support and stopped at stopping point positions of a plurality of stopping points,
wherein a movement of the 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 the start of travel of the elevator cage a movement course in the form of a trip/speed profile for travel of the elevator cage from a instantaneous elevator cage position to a destination stopping point position is calculated, and anticipated slip between the drive pulley and the support means is included in the calculation of the trip/speed profile and during 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.
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18. A memory having encoded thereon instructions which, when executed by a processor, cause the processor to perform a method, the method comprising:
determining, for an elevator cage in the elevator installation, a movement profile of the elevator cage for a movement of the elevator cage to a destination stopping point position in the elevator installation, the determining being based at least in part on an anticipated slip between a drive pulley and a support coupled to the elevator cage; detecting a movement of the elevator cage based at least in part on signals of a rotary encoder coupled to the drive pulley or to a drive motor; and during the movement of the elevator cage, controlling the drive motor based at least in part on the signals of the rotary encoder and the movement profile.
Specification