Vibration controller and its vibration control method

Abstract

The utility model discloses a vibration control apparatus based on self adaptive inverse control and the corresponding vibration control method which increases the control speed of the controller and realizes multi-point vibration control and waveform reproduction. The vibration control apparatus comprises a display and control unit, a calculation processing unit, a data acquisition unit, a vibration signal generating unit and a control object connected with the output signal of the vibration signal generating unit, wherein the calculation processing unit takes the DSP processor as the kernel and is in bidirectional signal connection with a field programmable gate array FPGA. The output of the control object is connected with the input of the data acquisition unit. The calculation processing unit comprises two self-adaptive filters for establishing and modifying the vibration signal respectively. The positive model P(Z) and the inverse model C(Z) of the control object are constructed off-line by utilizing the AP-NLMDF-CD algorithm through the two self-adaptive filters and then are modified on-line with the minimum iterative error as the evaluation criterion to make the output of the control object to approach to the referenced time domain input signal continuously.

Description

technical field [0001] The invention relates to a vibration control device for vibration test and a corresponding vibration control method. Background technique [0002] The vibration test equipment is mainly used to simulate the working environment of structural vibration, and can check whether the design, production and process of the product meet the requirements of the working environment of vibration. In recent years, with the continuous improvement of product performance and reliability requirements in aviation, aerospace, military equipment, and various civil industries, the requirements for environmental vibration test simulation are getting higher and higher. Its test method has also gradually developed from the previous sine test to random test, sine plus random, random plus random, impact test to meet the needs of different applications and scientific research fields. [0003] Vibration control devices are the core of environmental vibration equipment. The tradi...

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Problems solved by technology

[0004] The technical problem to be solved by the present invention is to overcome the problems of the existing frequency domain control method that the waveform cannot be reproduced and the stabilization process is slow, and to provide a vibration control device based on adaptive inverse control and the corresponding vibration time domain The control method can improve the stable speed of the controller and realize multi-point vibration control and waveform reproduction

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