专利名称：SPEED MEASUREMENT SYSTEM FOR SPEED
CONTROL OF HIGH-SPEED MOTORS
发明人：BEA, Bon-Ho申请号：EP06788868.5申请日：20060731公开号：EP1922549B1公开日：20121226
摘要：A system (20) for measuring speed of a high-speed motor (22) using a movingaverage filter (120). A position sensor (24) generates a rotor position signal. A signalprocessing module (26) determines a rotor angle from the rotor position signal. A speedobserver module (112) calculates a raw speed of the motor from the rotor angle. A filtermodule (114) selectively generates a filtered speed of the motor from the raw speed ofthe motor. A frequency-to-period converter module (116) calculates a rotor period fromone of the raw speed of the motor and the filtered speed of the motor. A divider module(118) calculates number of points in a moving average from the rotor period. A movingaverage filter module (120) adjusts a window size of the moving average to the rotorperiod. A moving average filter (120) removes ripple and harmonics of the ripple from theraw speed of the motor (22).
申请人：GM GLOBAL TECH OPERATIONS INC
地址：US
国籍：US
代理机构：Manitz, Gerhart
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