| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a motor control unit that facilitate users recognizing faults. <P>SOLUTION: An open-loop control part 22 determines command voltages v<SB>d</SB>, v<SB>q</SB>on a dq axis according to a circuit equation of a motor, based on command currents i<SB>d</SB><SP>*</SP>, i<SB>q</SB><SP>*</SP>on the dq axis and an angular velocity ω<SB>e</SB>of a motor. A dq-axis/three phase conversion part 23 converts the command voltages v<SB>d</SB>, v<SB>q</SB>to three phase command voltages V<SB>u</SB>, V<SB>v</SB>, V<SB>w</SB>. A fault monitoring part 27 determines whether a current sensor 14 operates normally or not. A three phase voltage correction part 24 corrects the three phase command voltage to reduce torque ripple in a normal state or increase it in an abnormal state so as not to impair safety, thereby notifying the user of the occurrence of faults. <P>COPYRIGHT: (C)2011,JPO&INPIT |
