Journal of Northeastern University Natural Science ›› 2019, Vol. 40 ›› Issue (12): 1760-1766.DOI: 10.12068/j.issn.1005-3026.2019.12.017

• Mechanical Engineering • Previous Articles     Next Articles

Inverse Identification and Calibration of the Excitation Force of Non-contact Magnetic Field Exciter Based on Measured Response

SUN Wei1,2, WANG Jin1,2   

  1. 1. School of Mechanical Engineering & Automation, Northeastern University, Shenyang 110819, China; 2. Key Laboratory of Vibration and Control of Aero-Propulsion Systems, Ministry of Education, Northeastern University, Shenyang 110819, China.
  • Received:2019-01-21 Revised:2019-01-21 Online:2019-12-15 Published:2019-12-12
  • Contact: SUN Wei
  • About author:-
  • Supported by:
    -

Abstract: To broaden the usable range of non-contact magnetic field exciter, it is urgent to calibrate the amplitude of excitation force acting on structure. A method was proposed to calibrate the excitation force of non-contact magnetic field exciter, which was based on the measured response of cantilever beam and used optimization technique. Firstly, the calibration principle and method of excitation force were presented. The iterative calculation was utilized to minimize the vibration response deviation between measurement and finite element analysis. Next, the methods for creating finite element model and solving vibration response based on ANSYS software were briefly described. Then, the iterative process of calibrating excitation force amplitude was described with the use of optimization module of ANSYS software. At last, the excitation force amplitude of non-contact magnetic field exciter was calibrated according to the proposed method. The calibration curves and the functional relationship between voltage and excitation force were obtained, which demonstrated the effectiveness of the method proposed.

Key words: non-contact magnetic field exciter, vibration response, excitation force, inverse identification, calibration method

CLC Number: