| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a motor drive apparatus that certainly causes a driver to notice the occurrence of failure when an inverter or a coil set of either one system has failed. <P>SOLUTION: When, in two systems of motor drive apparatus equipped with two inverters and two coil sets, a failure of inverter or coil set of either one system is detected (S20:YES), a power supply relay of a failure system is shut down (S50), and a maximum current limit value Ir which is an upper limit value of the current supply limit value of a normal system is set to a value equivalent to a maximum current limit value before failure detection (S60). Then when an IG switch is ON (S70:YES), and a steering torque detection value Td exceeds a predetermined threshold T0 (S80 A:YES), a handle is vibrated to a rotating direction during driver's handle operation by adding a vibration component which has predetermined amplitude and frequency to a current command value (S90). Thereby the driver is surely caused to sense the occurrence of the failure. <P>COPYRIGHT: (C)2012,JPO&INPIT |
