Control method for the actuator of a variable valv

专利名称：Control method for the actuator of a

variable valve train

发明人：Martin Schaefer申请号：US09995604申请日：20011129公开号：US06665165B2公开日：20031216

专利附图：

摘要：The invention relates to a control method for the electrical actuator of avariable valve train, the actuator being embodied in the form of a worm gear in which asensor detects a position value (measured position value) of an eccentric shaft, a control

difference is generated in a feedback branch with the use of the measured position value,and the electrical actuator is actuated. To suppress interferences in the control system,an observer value is formed that is associated with the position value from the pulse dutyfactor of the pulse-width modulation. The observer value is composed to a comparisonvalue formed from the measured position value. The detected measured position value isnot accepted if the deviation of the observer value from the comparison value exceeds adefined limit.

申请人：BAYERISCHE MOTOREN WERKE AKTIENGESELLSCHAFT

代理机构：Crowell & Moring LLP

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