发明名称 |
Method for controlling an electromagnetic valve, in particular for an automatic transmission of a motor vehicle |
摘要 |
A method for controlling an electromagnetic valve, in particular for an automatic transmission of a motor vehicle. With known methods, electromagnetic valves are triggered with a pulse-width-modulated signal having a constant clock frequency. The object is to provide a method by which a rapid response characteristic and a high adjustment precision of the electromagnetic valve are made possible. The specific properties of a hydraulic system in which electromagnetic valves are used, in particular the rigidity and damping, are not constant but instead change considerably under different operating states of the hydraulic system and/or with different performance quantities of the electromagnetic valve. These different properties are taken into account through the change in the clock frequency as a function of performance quantities of the electromagnetic valve. The clock frequency may thus be optimally adapted to the properties of the hydraulic system, and a rapid response characteristic and a high adjustment precision are achieved.
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申请公布号 |
US2004225429(A1) |
申请公布日期 |
2004.11.11 |
申请号 |
US20040773668 |
申请日期 |
2004.02.06 |
申请人 |
KEIM NORBERT;OTT CHRISTOF;BAYHA WULF-SIEGFRIED;KROHN MARTIN;HUBER BERND;DORFSCHMID JENS;SEMLER JUERGEN |
发明人 |
KEIM NORBERT;OTT CHRISTOF;BAYHA WULF-SIEGFRIED;KROHN MARTIN;HUBER BERND;DORFSCHMID JENS;SEMLER JUERGEN |
分类号 |
F15B21/08;F16H61/02;H01F7/18;(IPC1-7):G06F19/00 |
主分类号 |
F15B21/08 |
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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