SPEED CONTROLLER OF ELEVATOR

摘要

PURPOSE:To provide comfortableness in riding in an elevator cage and reduce an error in landing of the cage and shorten the time during which the elevator is operated from floor to floor by setting the crossed angle frequency of the speed characteristic of a lifting motor from the start of acceleration to the start of deceleration of the motor smaller than that from the start to stop of deceleration of the motor. CONSTITUTION:The crossed angle frequency of the speed characteristic of a lifting motor 2 from the start of acceleration to the start of deceleration is set smaller by a proportional integrating circuit 11 than that from the start to stop of deceleration. This compensates for the phase lag of a speed control system from the start of acceleration to the start of deceleration of the lifting motor 2 and the gain of the resonance frequency of a machine system is reduce to stabilize the speed control system to provide comfortablness in riding in a cage 6. The phase lead of the speed control system from start to stop of acceleration of the lifting motor 2 is compensated and the response speed of the speed control system is heightened to thereby reduce an error in landing of the cage 6 to shorten the time during which the cage is operated from floor to floor.