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Abstract: Considering complex and compact like the metal pushing belt
continuously variable transmission, the principle and method of ambient
test are studied. The modal parameters of the CVT are identified by the
acceleration signal of the CVT picked up in transmission test bench when
the transmission system is in operation. The difficult problem that can
not be solved by common experimental modality analysis is overcome. The
experiment conclusions coincide with theoretic solution and bear
theoretic research out. The research result settle basis for the
mechanical optimization, the dynamic response analysis and evaluating
fatigue life of CVT so as to improve smoothness of automobile and to
reduce noise.
Key words: Automobile Metal pushing V-belt Continuously variable
transmission Modality analysis Random vibration
CLC No: TH132
国家自然科学基金资助项目(59835160). Received
20020119, received in revised form 20020910
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