| 摘要 |
<p>A motor driven power steering device comprises a motor (1) for assisting a manual steering effort on the basis of a steering torque or the like detected by a torque sensor (7), a motor drive circuit (2) for drivingly controlling the motor (1), a supply voltage detecting circuit (17) for detecting a supply voltage VB of the motor drive circuit (2), and a microcomputer (9) for detecting respective terminal voltages VM+, VM- when the supply voltage detecting circuit (17) judges the supply voltage VB to be at least a predetermined value, judging whether the detected value deviates from set values VTHH, VTHL, and judging trouble of wiring connected to the motor (1) when the respective terminal voltages VM+/- deviate from the set values VTHH, VTHL. <IMAGE></p> |
