Transactions of Nanjing University of Aeronautics & Astronautics
Optimizing Control for Rotor Vibration with Magnetorheological Fluid Damper
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Abstract:
The aim of this work is to analyze and design a control system for vibration reduction in a rotor system using a shear mode magnetorheological fluid (MRF) damper. A dynamic model of the MRF damper rotor system was built and simulated in Matlab/Simulink to analyze the rot or vibration characteristics and the vibration reduction effect of the MRF damper. Based on the numerical simulation analysis, an optimizing control strategy using pattern search method was proposed and designed. The control system was constructed on a test rotor bench and experiment validations on the effectiveness of the proposed control strategy were conducted. Experimental results show that rotor vibration caused by unbalance can be well controlled whether in resonance region (70%) or in non-resonance region (30%). An irregular vibration amplitude jump can be suppressed with the optimization strategy. Furthermore, it is found that the rapidity of transient response and efficiency of optimizing technique depend on the pattern search step. The presented strategies and control system can be extended to multi-span (more than two or three spans) rotor system. It provides a powerful technical upport for the extension and application in target and control for shafting vibration.
Keywords:
Project Supported:
the National Program on Key Basic Research Program (″973″ Program) (2012CB026000); the Ph.D. Programs Foundation of Ministry of Education of China (20110010110009).
Clc Number:
CHINA AERO-SCIENCES
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