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Vol. 153, No. 6, June 2013, pp. 118-123

 

Bullet

 

Research on the Dynamic Error and Acceleration Compensation for the Piezoelectric Sensor
 
Zongjin REN, Zhenyuan JIA, Jun ZHANG *, Yongyan SHANG, Shengnan GAO

Key Laboratory for Precision and Non-traditional Machining Technology of Ministry of Education,

Dalian University of Technology, 116024, P. R. China

Tel.: +86-0411-84708415

E-mail: zhangjun_dut@163.com

 

Received: 23 May 2013   /Accepted: 14 June 2013   /Published: 25 June 2013

Digital Sensors and Sensor Sysstems

 

Abstract: Piezoelectric force sensors are used in more and more industries and areas for the monitoring of the production process or testing products' performance. In some high-precision testing fields, the dynamic measurement performances of the test system itself have to be examined. Based on the dynamic response mathematical model of test system itself, this paper studies the dynamic measuring acceleration error compensation method. Firstly, according to the motion differential equation of the test system, the dynamic response transfer function is built and the root cause of the test system dynamic testing error is studied. Then the modal parameters of the system are obtained using the experimental modal analysis method and a deterministic response transfer function is established. The acceleration impact item is separated out by the method of separation of variables and weight coefficient method. Combining numerical differentiation, the expression used to calculate the acceleration is achieved. Finally, acceleration compensation experiment is done.

 

Keywords: Piezoelectric sensor, Dynamic response, Transfer function, Acceleration compensation, Dynamic error.

 

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