Influence of Friction Parameters on Vibration Characteristics of Piezoelectric Actuator

doi:10.12068/j.issn.1005-3026.2022.06.013

Abstract

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 F_○N， delay rate of relative sliding velocity control coefficient C， static friction coefficient μ_○S and its lower limit μ_○D，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 F_N， v， μ_S and C， and decreases with the increase of μ_D and ξ.F_N and μ_S affect the maximum static friction， μ_D 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

CLC Number:

TH122

WANG Peng， SUN Zhi-li， WU Nan， LUO Hai-tao. Influence of Friction Parameters on Vibration Characteristics of Piezoelectric Actuator[J]. Journal of Northeastern University(Natural Science), 2022, 43(6): 850-856.

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