Sinusoidal vibration table control method, system and device

A technology of sinusoidal vibration and control method, applied in the field of system and device, control method of sinusoidal vibrating table, can solve problems such as output waveform distortion, phase lag, amplitude error, etc., to avoid amplitude error and phase lag, and reduce distortion degree of effect

Pending Publication Date: 2022-04-26
SUN YAT SEN UNIV SHENZHEN +1
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  • Claims
  • Application Information

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Problems solved by technology

However, there are still some problems. There is a certain amplitude error and phase lag between the output signal of the vibrating table and the input signal. At the same time, the output signal often contains high-order harmonics, resulting in serious distortion of the output waveform.

Method used

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  • Sinusoidal vibration table control method, system and device
  • Sinusoidal vibration table control method, system and device
  • Sinusoidal vibration table control method, system and device

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Embodiment Construction

[0042] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. For the step numbers in the following embodiments, it is only set for the convenience of illustration and description, and the order between the steps is not limited in any way. The execution order of each step in the embodiments can be adapted according to the understanding of those skilled in the art sexual adjustment.

[0043] refer to figure 1 with figure 2 , the invention provides a method for controlling a sinusoidal vibrating table, the method comprising the following steps:

[0044] S1. Measure the displacement of the vibration table to obtain the displacement measurement value;

[0045] Specifically, the vibration table displacement y is measured by the displacement sensors distributed on the vibration table surface 1 ,y 2 ,...,y n , where the number n of sensors is determined by the configuration of the shaking table. T...

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Abstract

The invention discloses a sinusoidal vibration table control method, system and device. The method comprises the following steps: measuring the displacement of a vibration table; calculating a vibration table surface displacement feedback signal according to the displacement measurement value; a dead zone relay module is introduced, and a vibration table surface displacement feedback signal is input to the dead zone relay module; introducing a low-pass filter, and inputting an output signal of the dead-zone relay module to the low-pass filter; measuring the displacement of the actuator and calculating a deviation signal in combination with the filtering feedback signal; and a PID controller is introduced, and an actuator control signal is obtained through calculation in combination with the deviation signal. The system comprises a displacement measurement module, a displacement feedback calculation module, a dead zone relay module, a low-pass filter introduction module, a deviation calculation module and a control calculation module. The device comprises a memory and a processor used for executing the sinusoidal vibration table control method. According to the invention, the distortion degree of the output waveform of the vibration table is reduced. The method can be widely applied to the field of vibration control.

Description

technical field [0001] The invention relates to the field of vibration control, in particular to a method, system and device for controlling a sinusoidal vibration table. Background technique [0002] The vibration environment simulation test is to assess the reliability and stability of the product in the environment by simulating the vibration environment experienced by the product during transportation and use during the service life cycle under laboratory conditions. It is currently widely used in aviation , aerospace, weapons, ships, automobiles, construction and other industrial fields and departments. Sinusoidal vibration is a typical form of vibration, which can be used to study various periodic vibrations. Through vibration tests on products, it is possible to analyze test data, verify its reliability, and improve the exposed product defects. [0003] Most of the existing sinusoidal vibration control algorithms are the main control signal sent by the computer. Afte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M7/02
CPCG01M7/022
Inventor 李策袁焱丁北辰古博
Owner SUN YAT SEN UNIV SHENZHEN
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