DocumentCode :
1837919
Title :
Vibration suppression with frequency adaptation
Author :
Hillerström, Gunnar
Author_Institution :
Control Eng. Group, Lulea Univ. of Technol., Sweden
fYear :
1995
fDate :
28-29 Sep 1995
Firstpage :
890
Lastpage :
895
Abstract :
The aim of this paper is to present an adaptive solution to suppression of vibrations. Adaptation is appropriate whenever the fundamental frequency is unknown or drifting, e.g. when the vibration is caused by a rotational machine with unknown rotational speed. The approach presented here has its roots in repetitive control based on models of isolated frequencies rather than the commonly used delay model. The relationship between different modeled frequencies is fixed by the model structure, and the fundamental frequency is obtained by a Newton method. To show the feasibility of this approach, it was used to reduce vibrations on a lever that were caused by a motor with imbalance in its rotation. As an actuator, a standard loudspeaker was used, and the vibration was sensed by an accelerometer
Keywords :
Newton method; Newton method; delay model; frequency adaptation; fundamental frequency; loudspeaker; repetitive control; rotational machine; vibration suppression; Active noise reduction; Actuators; Adaptive control; Control systems; Damping; Frequency; Newton method; Noise cancellation; Programmable control; Vibration control;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Control Applications, 1995., Proceedings of the 4th IEEE Conference on
Conference_Location :
Albany, NY
Print_ISBN :
0-7803-2550-8
Type :
conf
DOI :
10.1109/CCA.1995.555872
Filename :
555872
Link To Document :
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