发明名称 |
A METHOD TO REDUCE MIDRANGE RESONANCE DURING OPERATION OF A MULTI-PHASE STEP MOTOR |
摘要 |
<p>The frequency of the pulse width modulator within a step motor control circuit is increased above a base frequency under defined conditions to enable more accurate construction of the phase current waveform for preventing mid-range resonance. The PWM frequency is stepped between frequencies by a fixed amount above the base frequency, to prevent the excitation of system harmonics and prevent step motor operational instability.</p> |
申请公布号 |
EP1680859(A4) |
申请公布日期 |
2013.06.19 |
申请号 |
EP20040794033 |
申请日期 |
2004.10.04 |
申请人 |
INTELLIGENT MOTION SYSTEMS, INC. |
发明人 |
COUTU, DAVID;FOURNIER, ROBERT, A. |
分类号 |
H02P8/00;H02P8/16;H02P8/32 |
主分类号 |
H02P8/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|