Patent ID: 7061202

Claim:
An automobile servomotor controller, comprising: a master control unit having a master control circuit for transmitting a data packet through a single conductor communication bus; and a plurality of slave units each having a motor and a control circuit that is connected to the master control unit through said communication bus and transmits control data to a driving device configured to drive the motor for controlling rotation of the motor depending upon contents of said data packet wherein, each of said slave units comprises a feedback control unit, which conducts a feedback control to the rotation of the motor so as to achieve a target reached state according to the data packet contents by detecting a position value with a position detecting device, the master control circuit is configured to transmit the data packet enclosing a control signal for inhibiting the feedback control to the control circuit of any one of the slave units, and the control circuit includes an operation permitting/inhibiting signal processing logic, which switches the feedback control to a non-feedback control for inhibiting the operation of the motor until the reception of a new data packet that changes the target position with respect to the target reached state, when the control circuit receives the data packet enclosing the control signal from the master control circuit.