Abstract: This paper researches frequency response characteristic of transducer (deceleration) in rolling bearing vibration testing. The mechanical model of the transducer is set up and analyzed. It has been found how some factors influence frequency response characteristic of the transducer. The results have been tested tribally. The results show that contact rigidity is the most important. To adopt the line contact form and enhance the material strength of pick-up-red can increase contact rigidity. To decrease equivalent mass of the transducer can obviously increase the resonant frequency. All conclusions are applicable to analogous vibration measuring transducer.

Key words: 等效质量, 接触刚度, 频响特性, 谐振频率