| 摘要 |
PURPOSE: To reduce rocking at cage departure by stopping increase in departure torque reference signal according to the detection speed signal which generates a speed reference signal, related to driving of an elevator with a departure torque reference signal applied to an actuator. CONSTITUTION: The speed difference signal between a command speed signal from a characteristics generator 6 and actual speed signal applied through a signal line 8 is acquired with a speed adjuster 2, and a torque command TC acquired by amplifying (9) the speed difference signal is applied to an actuator 12 so that a required torque is generated at a motor shaft to drive an elevator. Here, at departure, a signal line 32 is applied with a departure torque command signal TSC using the actual speed signal and a brake release command signal from the characteristics generator 6 at a departure logic part 28 while a signal line 34 applied with a departure speed characteristics command signal SP. The departure torque command signal TSC is added to the torque command TC while a brake 22 is released under a brake release command LB delayed by a specified time. |
