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Active noise control of flexible linkage mechanism with piezoelectric actuators

✍ Scribed by Xianmin Zhang; Jianwei Lu; Yunwen Shen

Publisher
Elsevier Science
Year
2003
Tongue
English
Weight
181 KB
Volume
81
Category
Article
ISSN
0045-7949

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✦ Synopsis

An active noise control method for flexible linkage mechanism systems with piezoelectric actuators and strain gauge sensors is studied. By employing a set of wave number transformations on the original equations of motion of the flexible linkage mechanisms, a new set of equations of motion is obtained, in which the unknown variables can describe the structural acoustic radiation level of the mechanism system directly. On the basis of the new equations, the active noise control of the flexible linkage mechanism system with piezoelectric actuators is discussed. Firstly, the optimal control forces are determined based on the optimal control theory. Secondly, the controller of the system that consists of the output feedback and the disturbance feed-forward control laws is presented. Simulations show that the method presented in this paper is valid.

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