发明名称 |
Method and apparatus for controlling load current |
摘要 |
A load DC motor is supplied with a DC current through a converter principally consisting of thyristors controlled by an ON-state control signal. The load current is detected both as to the mean value and the variation in time thereof. The mean value of the load current is calculated based on the load current values detected at the time of the present On-signal and the preceding ON-signal. The difference between the reference value and the mean value of the load current is calculated, and the difference between this differential signal and the variation of the load current is further calculated, so that the timing for providing the ON-signal is calculated based on the resultant differential signal.
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申请公布号 |
US4468724(A) |
申请公布日期 |
1984.08.28 |
申请号 |
US19820365092 |
申请日期 |
1982.04.02 |
申请人 |
HITACHI, LTD. |
发明人 |
OMAE, TSUTOMU;MATSUDA, TOSHIHIKO;TACHIKAWA, MAKOTO |
分类号 |
H02M1/084;H02M7/162;H02M7/5387;H02P7/292;H02P23/00;(IPC1-7):H02P13/26 |
主分类号 |
H02M1/084 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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