DSP Implementation of an Active Bearing Mount for Rotors Using Hybrid Control

An on-line active technique for suppressing rotor vibration is proposed. Electromagnetic actuators are mounted on the housing of a ball bearing for generating counter forces to cancel the transverse vibrations due to imbalance, misalignment, and so forth. Controllers based on feedback structure, fee...

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Bibliographic Details
Published inJournal of vibration and acoustics Vol. 122; no. 4; pp. 420 - 428
Main Authors Bai, Mingsian R, Luo, Weibin
Format Journal Article
LanguageEnglish
Published New York, NY ASME 01.10.2000
American Society of Mechanical Engineers
Subjects
Applied sciences
Bearings, bushings, rolling bearings
Computer science; control theory; systems
Control system synthesis
Control theory. Systems
Drives
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Mechanical engineering. Machine design
Physics
Solid mechanics
Structural and continuum mechanics
Vibration, mechanical wave, dynamic stability (aeroelasticity, vibration control...)
Vibrations and mechanical waves
feedback
linear quadratic Gaussian control
machine bearings
feedforward
vibration control
LQG control
Feedback regulation
Control synthesis
Magnetic force
Digital processing
Experimental study
Implementation
Rolling bearing
Digital signal
Digital control
Mounting
Ball bearing
Active system
Least squares method
Testing equipment
Shaft
Vibration control
Feedforward
Actuator
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Summary:An on-line active technique for suppressing rotor vibration is proposed. Electromagnetic actuators are mounted on the housing of a ball bearing for generating counter forces to cancel the transverse vibrations due to imbalance, misalignment, and so forth. Controllers based on feedback structure, feedforward structure and hybrid structure are investigated. The multiple channel active control systems are implemented on the platform of a digital signal processor. Numerical simulation and experimental investigations indicate that the proposed methods are effective in suppressing the periodic disturbances. In particular, the hybrid control by using feedback linear quadratic gaussian control and feedforward least mean square algorithm with synthetic reference achieves the best performance in terms of vibration attenuation and convergence speed. [S0739-3717(00)00904-1]
ISSN:1048-9002
1528-8927
DOI:10.1115/1.1287788