发明名称 |
Current limiter for an electrical actuator |
摘要 |
The current limiter for an electrical actuator includes a switch for selectively controlling the current supplied to the electrical actuator. A detector detects the current level flowing through the electrical actuator and an electronic controller adjusts the duty ratio for the switch in order to limit excessive current. The electronic controller includes a comparator for comparing the current through the electrical actuator with an upper threshold level and a lower threshold level. The duty ratio is decreased gradually if the current exceeds the upper threshold level and is gradually increased if the current is below the lower threshold level. The duty ratio is sustained if the current is a range between the upper and lower threshold levels.
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申请公布号 |
US4961033(A) |
申请公布日期 |
1990.10.02 |
申请号 |
US19880288889 |
申请日期 |
1988.12.23 |
申请人 |
AISIN SEIKI KABUSHIKI KAISHA |
发明人 |
HIROTA, FUMIAKI |
分类号 |
H02P7/288;B62D5/04;H02P7/00 |
主分类号 |
H02P7/288 |
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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