| 摘要 |
<P>PROBLEM TO BE SOLVED: To realize a compact, inexpensive, highly reliable control device for a vehicular motor without using a rotary sensor. <P>SOLUTION: A control device for a vehicular motor alternatively switches between first and second conduction states, in which the first conduction state is where: one coil terminal of a stator coil is electrified by an upper switching element of a drive arm; one coil terminal different from the one coil terminal is electrified by a lower switch; and the remaining coil terminal is not electrified by either of the upper and lower switches and the second conduction state is where: one or two coil terminals of the stator coil is electrified by the upper switching element; and all coil terminals, other than the one or two coil terminals, are electrified by the lower switch, on the basis of a voltage of the remaining coil terminal in a first stator coil or a second stator coil that is in the first conduction state. <P>COPYRIGHT: (C)2012,JPO&INPIT |
