Journal of Northeastern University(Natural Science) ›› 2022, Vol. 43 ›› Issue (6): 850-856.DOI: 10.12068/j.issn.1005-3026.2022.06.013

• Mechanical Engineering • Previous Articles     Next Articles

Influence of Friction Parameters on Vibration Characteristics of Piezoelectric Actuator

WANG Peng1, SUN Zhi-li1, WU Nan2, LUO Hai-tao3   

  1. 1. School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110819, China; 2. Department of Engineering, University of Manitoba, Winnipeg R3T2N2, Canada; 3. Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China.
  • Revised:2021-06-08 Accepted:2021-06-08 Published:2022-07-01
  • Contact: WU nan
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Abstract: A friction vibration model considering kinematics and vibration solution was proposed, and the vibration response of a piezoelectric actuator under friction force from a moving object was solved by the iterative method. The influences of the moving object velocity v, normal pressure FN, delay rate of relative sliding velocity control coefficient C, static friction coefficient μS and its lower limit μD,damping ratio ξ on the dynamic friction force and vibration characteristics were studied by numerical simulation and parameter analysis. The results showed that the amplitude of the piezo electric stack increases with the rise of FN, v, μS and C, and decreases with the increase of μD and ξ.FN and μS affect the maximum static friction, μD affects the sliding friction, v and C obviously affect the transformation between the sticking and sliding friction status and the friction force variation during the conversion of friction status.

Key words: friction; kinematics; vibration; iterative method; parameter analysis

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