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Vibration amplitude iterative control method based on transfer function

A technology of transfer function and iterative control, applied to measuring devices, instruments, measuring ultrasonic/sonic/infrasonic waves, etc., can solve problems such as low efficiency, limited scope of application, cumbersome operation process, etc., and achieve simple operation process and applicable frequency range Wide-ranging, compositionally simple effects

Inactive Publication Date: 2018-11-16
TAIYUAN UNIV OF TECH
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Problems solved by technology

[0004] In order to effectively solve the problems of cumbersome operation process, low efficiency and limited scope of application in the traditional control and adjustment method of the output vibration signal amplitude of the vibration exciter, the present invention proposes a vibration amplitude iterative control method based on a transfer function to realize Efficient and high-precision control of the output vibration signal amplitude of the vibration exciter

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  • Vibration amplitude iterative control method based on transfer function

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Embodiment Construction

[0030] The present invention is described in detail below in conjunction with accompanying drawing:

[0031] Taking the vibration acceleration sensor to detect the output vibration acceleration signal of the vibration exciter as an example, the magnification of the power amplifier used to drive the vibration exciter and the sensitivity of the vibration acceleration sensor (including the amplifier or adapter) used to detect the vibration acceleration output signal are tested throughout the test. The frequency band can be set as a constant. Therefore, the vibration exciter, power amplifier, vibration acceleration sensor and its amplifier or adapter can be defined as a vibration excitation unit as a whole. Further, based on figure 1 The identification process of the acceleration transfer function of the vibration excitation unit is shown, and the acceleration transfer function of the vibration excitation unit is identified, and the specific steps are as follows:

[0032] (a) Wi...

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Abstract

The invention provides a vibration amplitude iterative control method based on a transfer function. The amplitude of an output vibration signal of a vibration exciter is adjusted to a value close to the amplitude of a target vibration signal via a primary input calculation and vibration driving process, the residual amplitude deviation is corrected rapidly via an iterative control process, and finally, the amplitude of the output vibration signal of the vibration exciter can be controlled in high efficiency and precision. According to the control method, a needed control system is simple in structure, operation flows are simple and the frequency range is wide, and the amplitude of the output vibration signal of the vibration exciter can be controlled in higher precision and efficiency.

Description

technical field [0001] The invention belongs to the technical field of vibration amplitude control, and in particular relates to a vibration amplitude iterative control method based on a transfer function. Background technique [0002] In general, for vibration exciters used for vibration sensor calibration and product vibration environment simulation tests, the amplitude control of the output vibration signal can be achieved by constructing a closed-loop feedback control system or adjusting the amplitude accuracy based on successive approximation. accomplish. The implementation of closed-loop control usually needs to be equipped with expensive and high-precision vibration signal detection sensors. Moreover, the closed-loop control system also has technical problems such as high stability requirements and difficult parameter adjustment. The vibration signal amplitude adjustment process based on the successive approximation method needs to first drive the vibration exciter t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01H17/00
CPCG01H17/00
Inventor 张旭飞权龙熊晓燕
Owner TAIYUAN UNIV OF TECH
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