Motor driving device and brushless motor

摘要

A motor driving device of the present invention is a motor driving device that incorporates so-called vector control of controlling a current applied to a motor winding in accordance with the position of a rotor. The motor driving device receives the input of a duty command value from a host controller via a command input port, for example. The motor driving device obtains a current command or a speed command as a command value such that the input duty command value is equal to the duty of a drive pulse output from an inverter. Then, the motor driving device performs vector control based on the obtained command value.

主权项

1. A motor driving device which receives a duty command value for commanding a duty of a drive pulse for driving a motor winding and generates the drive pulse having the duty pulse according to the duty command value that is input, the motor driving device comprising:
a command input port configured to be input the duty command value; a command generator configured to generate a current command value which corresponds to current amount for energizing the motor winding by using the duty command value that is input to the command input port; a current controller configured to generate a voltage command value for applying to the motor winding on the basis of current vector control system that separates a current of the motor winding into a d-axis current and a q-axis current which are orthogonal to each other in accordance with the current command value; and an inverter configured to apply the drive pulse, the drive pulse being PWM modulated at the duty according to the voltage command value, to the motor winding.