| 摘要 |
PROBLEM TO BE SOLVED: To compensate the leakage of a hydraulic elevator pump by providing an accelerometer for causing an acceleration signal representing the acceleration in the perpendicular direction of a car, so that a motor speed command signal is caused in response to the combination of a car speed error signal and the acceleration signal. SOLUTION: A car speed pattern generator 23 of a car motion control device 22 generates a car-speed command as the function of time during the traveling of the elevator, and after a prescribed time is lapsed, it responds to the car reference position signal 24 being supplied from a car encoder 25. The pattern generator 23 supplies a car reference speed signal 28, and this signal 28 is integrated and supplied to an adder 30 as a position command signal 29. Thereafter, the output of an adder 41 is supplied to a VVVF control device 18 as a motor speed command signal 42. The signal 44 of an encoder 43 integrated with an electric motor 17 is fed back to the VVVF control device 18. In this case, an accelerometer 49 is directly fitted to a car 10, and the acceleration signal normalized by a gain 50 is negatively fed back to the adder 41 to cause the motor speed command signal 42. |
