Optimized structure based on vibration active control circuit of distributed piezoelectric actuator and optimization method thereof

Abstract

The invention relates to an optimized structure based on a vibration active control circuit of a distributed piezoelectric actuator. The structure comprises distributed piezoelectric actuators, a piezoelectric beam, and circuit structures; and the distributed piezoelectric actuators are connected with the circuit structures and the piezoelectric beam through wires. According to the structure, a pole direction of a piezoelectric actuator can be changed conveniently and a problem that a traditional actuator can not excite complicated vibration can be solved; therefore, the structure is an optimized one that has a novel design and can be widely applied to active control of a distributed piezoelectric actuator in practice. Besides, an active vibration control effect of a distributed piezoelectric structure is improved; and a multi-mode control can be realized by adjustment and increase or decrease of a circuit of the structure. In addition, the optimization method based on the vibration active control circuit of the distributed piezoelectric actuator comprises five steps. According to the invention, the structure and the method have good practical values and wide application prospects in the structure vibration active control field.

Description

1. Technical field [0001] The invention relates to an optimized structure and method based on a distributed piezoelectric actuator vibration active control circuit, including significantly improving the effect and efficiency of piezoelectric actuators in active vibration control through the application of the circuit, which belongs to the active control of structural vibration field. 2. Background technology [0002] In recent decades, with the development and needs of science and technology, the vibration conditions of aircraft, ships and other structures have become increasingly complex and severe. How to effectively and accurately carry out active control of structural vibration has become a hot topic in many literatures. Among them, piezoelectric actuation The application of piezoelectric actuators in the field of active control of structural vibration has greatly encouraged active vibration control researchers. Compared with traditional exciters and vibration tables, pi...

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Problems solved by technology

[0002] In recent decades, with the development and needs of science and technology, the vibration conditions of aircraft, ships and other structures have become increasingly complex and severe. How to effectively and accurately carry out active control of structural vibration has become a hot topic in many literatures. Among them, piezoelectric actuation The application of piezoelectric actuators in the field of active control of structural vibration has greatly encouraged active vibration control researchers. Compared with traditional exciters and vibration tables, piezoelectric actuators are small in size and light in weight, and can directly convert electromechanical signals. , and can be distributed and integrated in large quantities, which can meet the vibration active control requirements of most structural materials, but for complex vibration conditions, such as the forced vibration of high Mach flexible structures during flight, the control effect of piezoelectric actuators is comparable to that of Control efficiency is still not ideal

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