Hydraulic elevator system with position or speed based valve control
AssigneeOtis Elevator Company
InventorsMatthew Sean Morrison, Robert K. Williams, Gregory M. O'Seep
Life of this patent
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Abstract
An illustrative example elevator system includes an elevator car and a valve assembly that selectively directs fluid flow to control movement of the elevator car. At least one sensor provides an indication of a current status of the elevator car, which includes at least a position of the elevator car or a speed of the elevator car. A processor receives the indication from the at least one sensor and adjusts operation of the valve assembly when the current status of the elevator car is different than a predetermined desired status.
Claims20
An elevator system, comprising:
- an elevator car;
- a valve assembly that selectively directs fluid flow to control movement of the elevator car;
- at least one sensor that provides an indication of a current status of the elevator car, the current status including at least a position of the elevator car or a speed of the elevator car;
- and
- a processor that receives the indication from the at least one sensor and adjusts operation of the valve assembly when the current status of the elevator car is different than a predetermined desired status.
A method of controlling an elevator system including an elevator car and a valve assembly that selectively directs fluid flow to control movement of the elevator car, the method comprising:
- determining a current status of the elevator car by sensing at least one of a position or a speed of the elevator car;
- and
- adjusting operation of the valve assembly when the current status of the elevator car is different than a predetermined desired status.
Dependencies are inferred from the claim text.