Nonlinear Dynamics

, Volume 40, Issue 3, pp 227–239

Nonlinear Dynamics of an Electrically Driven Impact Microactuator


DOI: 10.1007/s11071-005-6467-8

Cite this article as:
Zhao, X., Reddy, C.K. & Nayfeh, A.H. Nonlinear Dyn (2005) 40: 227. doi:10.1007/s11071-005-6467-8


We study the dynamics of an electrostatically driven impact microactuator. Impact between moving elements of the microactuator is modeled using the coefficient of restitution. Friction between the microactuator and its supporting substrate is modeled using the Amonton–Coulomb law. We consider the bifurcations under changes in the driving voltage and frequency. Grazing bifurcations introduce discontinuous transitions between different motions. It is also found that impacts dramatically change the characteristics of the frequency-response curve. Finally, we discuss the evolution of incomplete chatter to complete chatter, that is, sticking.

Key words:

chatter grazing bifurcation impact microactuators MEMS sticking 

Copyright information

© Springer Science + Business Media, Inc. 2005

Authors and Affiliations

  1. 1.Department of Engineering Science and Mechanics, MC 0219Virginia Polytechnic Institute and State UniversityBlacksburgU.S.A.

Personalised recommendations