Nonlinear dynamic characteristics of a micro-rotor system with rub-impact in MEMS

Author

Zhang, Wen-Ming ; Meng, Guang ; Feng, Jian-Zhi

Author_Institution

State Key Lab. of Vibration, Shock & Noise, Shanghai Jiao Tong Univ., China

Volume

2

fYear

2005

fDate

4-7 Dec. 2005

Abstract

In this paper, a general model of a Jeffcott rotor system with rub-impact for power MEMS is established and is analyzed by the modern nonlinear dynamics and bifurcation theories. An investigation is carried out on the stability of the rub solutions and the results provide a better understanding of the dynamical characteristics of the rotor system with rub-impact under different system parameters. Nonlinear behaviors of rub-related vibrations from imbalance are studied with numerical simulations and experiments. It is demonstrated that the system alternates among the periodic, quasi-periodic and chaotic motions as the system parameters change. The dynamical characteristics can be effectively used to diagnose the rub-impact fault for rotating micro-machineries.

Keywords

bifurcation; fault diagnosis; micromotors; nonlinear dynamical systems; rotors; vibrations; Jeffcott rotor system; bifurcation theory; chaotic motion; micro-rotor system; nonlinear dynamic characteristics; periodic motion; power MEMS devices; quasi-periodic motion; rub impact; rub-related vibrations; Bifurcation; Chaos; Micromechanical devices; Nonlinear dynamical systems; Numerical simulation; Power system modeling; Rotors; Stability;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference Proceedings, 2005. APMC 2005. Asia-Pacific Conference Proceedings

Print_ISBN

0-7803-9433-X

Type

conf

DOI

10.1109/APMC.2005.1606528

Filename

1606528