发明申请
US20140069533A1 Method for Detecting a Closing Time Point of a Valve Having a Coil Drive, and Valve
有权
用于检测具有线圈驱动的阀的关闭时间点的方法和阀
- 专利标题: Method for Detecting a Closing Time Point of a Valve Having a Coil Drive, and Valve
- 专利标题(中): 用于检测具有线圈驱动的阀的关闭时间点的方法和阀
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申请号: US14116903申请日: 2012-05-09
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公开(公告)号: US20140069533A1公开(公告)日: 2014-03-13
- 发明人: Johann Görzen
- 申请人: Johann Görzen
- 优先权: DE102011075521.7 20110509
- 国际申请: PCT/EP2012/058553 WO 20120509
- 主分类号: F16K37/00
- IPC分类号: F16K37/00 ; F02D41/26 ; F16K31/06
摘要:
A method for detecting a closing moment of a valve having a coil drive includes impressing an electrical voltage in the exciter coil to generate an exciter current through the coil, which attracts the movable armature and lifts the valve element off its valve seat. After the exciter current decays to zero, the voltage profile at the exciter coil is sampled and read out over time in the form of time value/voltage value pairs. The detected voltage values and time valves are transformed by the formation of a logarithm to form a transformed function. The transformed function is subsequently derived numerically with the formation of a derivation function. A transformed time value corresponding to the valve closing moment is detected based on the derivation function of a predetermined threshold value S being undershot, and the closing moment is calculated therefrom by inverse transformation.
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