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| An Improved Filtered x-LMS Algorithm Based On Feedforward Damping Compensation Of Secondary Path |
| LI Jia-quan, WANG Yong |
| Department of Automation, University of Science and Technology of China, Hefei 230027, China |
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Abstract Feedforward damping compensation method, a realization of damping compensation of secondary path, is studied, and it can be used to improve the performance of filtered x-LMS algorithm. Then, by combining the feedforward compensator and the adaptive feedforward controller, an improved filtered x-LMS algorithm based on feedforward damping compensation is designed. The improved algorithm still holds the virtues of filtered x-LMS algorithm, such as simple structure, excellent robustness, etc. A simulation of active control on a flexible cantilever’s first two modal vibration is carried out, in which standard and improved filtered x-LMS algorithm are respectively used. Simulation results show that the improved algorithm is capable of suppressing the first two modal vibration of cantilever in far less time than standard one.
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Received: 22 May 2008
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2009, Vol. 28 
