Method of operating a pumping system |
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| 申请号 | US14569170 | 申请日 | 2014-12-12 | 公开(公告)号 | US09903378B2 | 公开(公告)日 | 2018-02-27 |
| 申请人 | Edwards Limited; | 发明人 | Simon Harold Bruce; | ||||
| 摘要 | A pumping system for evacuating an enclosure comprises a pumping mechanism (30), a motor (32) for driving the pumping mechanism, and a controller (36) for controlling the motor. The controller sets a maximum value for a rotational frequency of the motor and a maximum value for a current in the motor, and, to optimise the performance of the pumping system, independently adjusts the maximum values during evacuation of the enclosure. | ||||||
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| 说明书全文 | |||||||
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