发明名称 |
Elevator speed control system |
摘要 |
An electric generator energizes a driving motor for an elevator car. In order to control the generator field, a control circuit compares a command speed signal with a sensed speed signal of the elevator car and applies the result of the comparison to the field through a filter of electrically higher order operative to cancel out a resonance and an antiresonance frequency of a mechanical system formed of the elevator car and associated mechanical components.
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申请公布号 |
US4027745(A) |
申请公布日期 |
1977.06.07 |
申请号 |
US19750603627 |
申请日期 |
1975.08.11 |
申请人 |
MITSUBISHI DENKI KABUSHIKI KAISHA |
发明人 |
WATANABE, EIKI |
分类号 |
B66B1/24;B66B1/30;H02P7/34;(IPC1-7):B66B1/30 |
主分类号 |
B66B1/24 |
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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