| 摘要 |
<P>PROBLEM TO BE SOLVED: To materialize a device which enables optional phase adjustment in the simplest possible circuit scale, upon driving two three-phase motors with PWM signals. <P>SOLUTION: A motor controller counts the cycles of two carriers equal in cycles which generate two pairs of PWM waveforms for control of two motors (a motor A104 and a motor B105), by the number of clocks, and sets the phase difference different by a specified discrete value to one carrier, and adds up the discrete values of the carriers in this state, and slides the mutual phase relation so that it may be a desired phase difference. <P>COPYRIGHT: (C)2007,JPO&INPIT |
