| 摘要 |
PURPOSE:To fully digitize a current loop without increasing the load of a main processor by employing a calculation processor. CONSTITUTION:This circuit has a main processor 30 which calculates an amplitude command on the basis of the difference between a command speed and the actual speed of a motor and outputs the amplitude command and a current command of at least one phase, a calculating processor 10 which calculates the pulse width command of each phase from the amplitude command and the current command of the processor 30 the actual phase current of the motor as well as the actual phase currents of the motor, a timer 11 which outputs a pulse width modulation signal of each phase based on the pulse width command of the processor 10, and an inverter 8 for driving a motor by the pulse width modulation signal of the timer 11. |
