| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an electric motor controller for eliminating a necessity of an expensive microcomputer, and having a current control system for improving a response to a current. <P>SOLUTION: The electric motor controller comprises: a first sample-hold device for sampling and detecting an output current at timing in synchronization with a carrier signal; a current controller for implementing a control for matching an instruction current with the output current; a PWM pulse generator for comparing a voltage instruction calculated by using an output from the current controller with the carrier signal, and converting a comparison result into a PWM pulse; a second sample-hold device for sampling the instruction current at timing in synchronization with the carrier signal; a voltage compensator for calculating a voltage compensation based on an output from the second sample-hold device; and an adder for adding the voltage instruction to an output from the voltage compensator, and generating a new voltage instruction. <P>COPYRIGHT: (C)2009,JPO&INPIT |
