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Sensors 2016, 16(8), 1202; doi:10.3390/s16081202

Dynamic Calibration and Verification Device of Measurement System for Dynamic Characteristic Coefficients of Sliding Bearing

Key Laboratory of Education Ministry for Modern Design and Rotor-Bearing System, Xi’an Jiaotong University, Xi’an 41049, China
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Author to whom correspondence should be addressed.
Academic Editor: Gangbing Song
Received: 20 May 2016 / Revised: 22 June 2016 / Accepted: 27 July 2016 / Published: 30 July 2016
(This article belongs to the Section Physical Sensors)
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Abstract

The identification accuracy of dynamic characteristics coefficients is difficult to guarantee because of the errors of the measurement system itself. A novel dynamic calibration method of measurement system for dynamic characteristics coefficients is proposed in this paper to eliminate the errors of the measurement system itself. Compared with the calibration method of suspension quality, this novel calibration method is different because the verification device is a spring-mass system, which can simulate the dynamic characteristics of sliding bearing. The verification device is built, and the calibration experiment is implemented in a wide frequency range, in which the bearing stiffness is simulated by the disc springs. The experimental results show that the amplitude errors of this measurement system are small in the frequency range of 10 Hz–100 Hz, and the phase errors increase along with the increasing of frequency. It is preliminarily verified by the simulated experiment of dynamic characteristics coefficients identification in the frequency range of 10 Hz–30 Hz that the calibration data in this frequency range can support the dynamic characteristics test of sliding bearing in this frequency range well. The bearing experiments in greater frequency ranges need higher manufacturing and installation precision of calibration device. Besides, the processes of calibration experiments should be improved. View Full-Text
Keywords: sliding bearing; dynamic characteristics; stiffness and damping coefficients; measurement system; calibration sliding bearing; dynamic characteristics; stiffness and damping coefficients; measurement system; calibration
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MDPI and ACS Style

Chen, R.; Wei, Y.; Shi, Z.; Yuan, X. Dynamic Calibration and Verification Device of Measurement System for Dynamic Characteristic Coefficients of Sliding Bearing. Sensors 2016, 16, 1202.

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