| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a control device of a servo motor for an automobile capable of protecting a motor from breakage, enhancing maintainability in motor change or the like, and restoring the motor at low cost. <P>SOLUTION: The control device comprises an air-conditioner amplifier 116 having an amplifier side control circuit 117 to supply an instruction signal via a communication line 15, and actuators 2d and 4c as a plurality of slave side motor units which are connected to each other via a power supply line 14 and the communication line 15 and provided with an H bridge output circuit to drive the motor by power from the power supply line 14. If responses of the instruction signals are not returned from all the actuators 2d and 4c or the like bus-connected to the communication line 15, the amplifier side control circuit 117 determines an abnormality, and an off-signal out of on/off-signals to perform on/off operations can be supplied to a power supply circuit 150. Therefore, if no response of the instruction signal is returned from all the slave side motor units, the amplifier side control circuit of a master side amplifier unit determines the abnormality, and controls to shut the power supply to the power supply circuit. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
