发明名称 |
Vacuum pumping device |
摘要 |
The device has an electronic controlling device (C) supplying power to an electric motor (M) by a voltage signal. A control algorithm in the device provides varying equivalent voltage and excitation frequency depending on measured current drain of an oil mechanical pump (P) and on a maximum power that can be delivered. The algorithm adjusts the equivalent voltage and the frequency of the signal supplying power to the motor. |
申请公布号 |
EP1482178(B1) |
申请公布日期 |
2007.07.04 |
申请号 |
EP20040010342 |
申请日期 |
2004.04.30 |
申请人 |
VARIAN S.P.A. |
发明人 |
BUSSO, MARIO;CARBONERI, ROBERTO |
分类号 |
F04C25/02;F04C28/08;F04C27/02;H02P27/04;H02P29/00 |
主分类号 |
F04C25/02 |
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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