CompactRIO-based real-time active vibration reduction system and vibration reduction method

Abstract

The invention provides a CompactRIO-based real-time active vibration reduction system and vibration reduction method. The active vibration reduction system comprises a data acquisition module, a dataprocessing module, a control signal output module and an actuation vibration suppression module; the data acquisition module is used for acquiring an original vibration signal of a controlled system;the data processing module is used for obtaining a control component through operation of a control algorithm according to the original vibration signal; the control signal output module is used for converting the control component into an analog signal and outputting the analog signal; and the actuation vibration suppression module is used for suppressing vibration of the passive system accordingto the control analog signal. According to the software and hardware platform design scheme based on the simplified iterative learning control strategy, a complete tracking task in a limited intervalcan be realized according to the iterative learning control strategy, and non-ideal control signals are corrected by trying to control the system according to the deviation between output signals andtarget signals, so that the tracking performance of the system is improved.

Description

technical field [0001] The invention relates to the field of structural dynamics vibration active control, in particular to a real-time active vibration reduction system and vibration reduction method based on CompactRIO. Background technique [0002] In many fields of engineering technology, unnecessary vibration of the structure and disturbance of environmental noise will have a certain impact on the performance of the structure, and the long-term loss of the structure may cause very serious consequences. Vibration active control is a control method of "braking by motion". Influence, to achieve the purpose of suppressing or eliminating vibration. Active vibration control can effectively suppress disturbances, has the characteristics of strong self-adaptation, low power consumption, and wide application, making it a research hotspot in the field of vibration control in recent years. [0003] With the development of new material technology, functional materials are becomin...

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Problems solved by technology

[0005] The existing measurement and control systems for active control of structural vibration based on piezoelectric smart materials are mostly limited by the dynamic modeling of the laminated piezoelectric structure itself, that is, the change of the controlled structure model will have a great impact on the control effect, and the measurement and control system Not universal

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