MOTION AND CONTROL SYSTEM

摘要

A motion and control system, comprising: a current rectifier (220) for transforming an alternating current into a direct current; a smoothing circuit (230) for performing smoothing processing on the wave form of the direct current output by the current rectifier (220); a main power stage (241) and a standby power stage (242) which are connected between the smoothing circuit (230) and an electric motor in parallel; and a controller (210) which, under a normal working mode, drives the main power stage (241) to transform a direct current voltage from the smoothing circuit (230) into an alternating current voltage provided for the electric motor, and when it is determined that a fault of the main power stage (241) has occurred, drives the standby power stage (242) to transform the direct current voltage from the smoothing circuit (230) into the alternating current voltage provided for the electric motor. By comprising a standby power stage (242) in a motion and control device, the cost and size of the system are reduced.

主权项

1. A motion and control system, comprising:
a current rectifier for transforming an alternating current into a direct current; a smoothing circuit for performing smoothing processing on a wave form of the direct current from the current rectifier; a main power stage and a standby power stage that are connected in parallel between the smoothing circuit and an electric motor; and a controller which, under a first mode, drives the main power stage to transform a direct current voltage from the smoothing circuit into an alternating current voltage provided for the electric motor, and, under a second mode, drives the standby power stage to transform the direct current voltage from the smoothing circuit into the alternating current voltage provided for the electric motor.