| 摘要 |
PROBLEM TO BE SOLVED: To provide a motor controller capable of continuously rotating a motor if there are influences of electromagnetic noise.SOLUTION: The motor controller controls a voltage to be applied to a coil of the motor on the basis of a duty ratio indicated by an SI signal 100 outputted from an air conditioner ECU that is a high-order control device. If a high level signal of the SI signal 100 is lower than a discrimination voltage 102, the motor controller controls the voltage to be applied to the coil of the motor on the basis of a duty ratio indicated by the SI signal just before the SI signal 100 becomes lower than the discrimination voltage 102. If the state where the high level signal of the SI signal is lower than the discrimination voltage 102 is continued as long as or longer than a first predetermined time, the rotation of the motor is stopped.SELECTED DRAWING: Figure 4 |
