| 摘要 |
<p>PROBLEM TO BE SOLVED: To avoid concentration of current supply in a short period of time, in an actuator driving device that drives a plurality of actuators.SOLUTION: An actuator driving device includes half-bridge (HB) circuits 103A, 103B, and 103S. A first pulse-width modulation (PWM) signal generation unit 106A causes an output terminal A of the first HB circuit 103A to output a periodical drive voltage, a second PWM signal generation unit 106B causes an output terminal B of the second HB circuit 103B to output a periodical drive voltage, and a third PWM signal generation unit 106S causes an output terminal S (common terminal) of the third HB circuit 103S to output a periodical drive voltage. A timing setting unit 105 determines a duty ratio of a PWM signal by the first PWM signal generation unit and a duty ratio of a PWM signal by the second PWM signal generation unit 106B according to the amount of energization from the common terminal S and the output terminal A to a motor A or the amount of energization from the common terminal S to the output terminal B to a motor B.</p> |
