Elevator run profile modification for smooth rescue
AssigneeOtis Elevator Company
InventorEdward Piedra
Life of this patent
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Abstract
A method of operating an elevator system is provided. The method includes powering, using a battery, the elevator system when an external power source is unavailable. The method also includes controlling, using a controller, a plurality of components of the elevator system. The controlling comprises operating at least one of the battery, an elevator car, a drive unit, and a brake. The method further includes determining, using the controller, a run profile of the elevator car in response to a selected deceleration. The method yet further includes operating, using the controller, the elevator car in response to the run profile determined, and determining, using the controller, an actual velocity of the elevator car.
Claims20
A method of operating an elevator system, the method comprising:
- powering, using a battery, the elevator system when an external power source is unavailable;
- controlling, using a controller, a plurality of components of the elevator system, wherein controlling comprises operating at least one of the battery, an elevator car, a drive unit, and a brake;
- determining, using the controller, a run profile of the elevator car in response to a selected deceleration;
- operating, using the controller, the elevator car in response to the run profile determined;
- determining, using the controller, an actual velocity of the elevator car;
- and
- determining, using the controller, an actual electrical current of the drive unit when the actual velocity is not less than a selected velocity;
- comparing the actual electrical current to a selected electrical current,
- wherein the selected electrical current is an electrical current that the drive unit is capable of sinking when the elevator system is in a regenerative mode.
A method of operating an elevator system, the method comprising:
- powering, using a battery, the elevator system when an external power source is unavailable;
- controlling, using a controller, a plurality of components of the elevator system, wherein controlling comprises operating at least one of the battery, an elevator car, a drive unit, and a brake;
- determining, using the controller, a run profile of the elevator car in response to a selected deceleration;
- operating, using the controller, the elevator car in response to the run profile determined;
- determining, using the controller, an actual velocity of the elevator car;
- and
- adjusting, using the controller, the run profile to match the actual velocity when the actual velocity is less than a selected velocity.
An apparatus for operating an elevator system, the apparatus comprising:
- a battery to power the elevator system when an external power source is unavailable;
- an elevator car;
- a drive unit;
- a brake;
- a controller to control a plurality of components of the elevator system, wherein controlling comprises operating at least one of the battery, the elevator car, the drive unit, and the brake,
- wherein the controller performs operations comprising:
- determining a run profile of the elevator car in response to a selected deceleration;
- operating the elevator car in response to the run profile determined;
- determining an actual velocity of the elevator car;
- and
- determining, using the controller, an actual electrical current of the drive unit when the actual velocity is not less than a selected velocity;
- comparing the actual electrical current to a selected electrical current,
- wherein the selected electrical current is an electrical current that the drive unit is capable of sinking when the elevator system is in a regenerative mode.
An apparatus for operating an elevator system, the apparatus comprising:
- a battery to power the elevator system when an external power source is unavailable;
- an elevator car;
- a drive unit;
- a brake;
- a controller to control a plurality of components of the elevator system, wherein controlling comprises operating at least one of the battery, the elevator car, the drive unit, and the brake,
- wherein the controller performs operations comprising:
- determining a run profile of the elevator car in response to a selected deceleration;
- operating the elevator car in response to the run profile determined;
- determining an actual velocity of the elevator car;
- and
- adjusting the run profile to match the actual velocity when the actual velocity is less than a selected velocity.
Dependencies are inferred from the claim text.