| 摘要 |
PROBLEM TO BE SOLVED: To secure simultaneity or synchronism of plural pieces of information required for control in a controller of an alternating-current motor in which a strong electric sensor signal inputted into a power unit is transmitted from the power unit to a control operation unit as a digital signal.SOLUTION: A MG (motor generator) control device that is a controller of an alternating-current motor is provided in which a power unit including an inverter and a MG-ECU (control operation unit) controlling energization of MG are separated and installed on different substrates. A sensor signal of a strong electric sensor (current sensor or voltage sensor) installed on the power unit is transmitted from the power unit to the MG-ECU, and a signal of a rotation angle sensor is inputted into the MG-ECU. A sensor signal transmitter of the power unit regards a plurality of the strong electric sensor signals in which acquisition timing is the same, or synchronization is required in the MG-ECU control as a synchronous transmission group. The sensor signal transmitter acquires the strong electric sensor signals per synchronous transmission group at the synchronous timing, and transmits the acquired strong electric sensor signals to the MG-ECU as a single unit of communication data. |
