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Principle Research on a Single Mass Piezoelectric Six-Degrees-of-Freedom Accelerometer
Key Laboratory of Optoelectronics Technology and Systems Ministry of Education, Chongqing University, Chongqing 400044, China
College of Optoelectronic Engineering, Chongqing University, Chongqing 400044, China
* Author to whom correspondence should be addressed.
Received: 24 June 2013; in revised form: 12 August 2013 / Accepted: 14 August 2013 / Published: 16 August 2013
Abstract: A signal mass piezoelectric six-degrees-of-freedom (six-DOF) accelerometer is put forward in response to the need for health monitoring of the dynamic vibration characteristics of high grade digitally controlled machine tools. The operating principle of the piezoelectric six-degrees-of-freedom accelerometer is analyzed, and its structure model is constructed. The numerical simulation model (finite element model) of the six axis accelerometer is established. Piezoelectric quartz is chosen for the acceleration sensing element and conversion element, and its static sensitivity, static coupling interference and dynamic natural frequency, dynamic cross coupling are analyzed by ANSYS software. Research results show that the piezoelectric six-DOF accelerometer has advantages of simple and rational structure, correct sensing principle and mathematic model, good linearity, high rigidity, and theoretical natural frequency is more than 25 kHz, no nonlinear cross coupling and no complex decoupling work.
Keywords: six-DOF accelerometer; piezoelectric sensor; finite element
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MDPI and ACS Style
Liu, J.; Li, M.; Qin, L.; Liu, J. Principle Research on a Single Mass Piezoelectric Six-Degrees-of-Freedom Accelerometer. Sensors 2013, 13, 10844-10855.
Liu J, Li M, Qin L, Liu J. Principle Research on a Single Mass Piezoelectric Six-Degrees-of-Freedom Accelerometer. Sensors. 2013; 13(8):10844-10855.
Liu, Jun; Li, Min; Qin, Lan; Liu, Jingcheng. 2013. "Principle Research on a Single Mass Piezoelectric Six-Degrees-of-Freedom Accelerometer." Sensors 13, no. 8: 10844-10855.