A Disturbing Force Compensation Method for Two Degrees of Freedom Electro-hydraulic Vibration Table

A technology of electro-hydraulic vibration and compensation method, which is applied in the direction of vibration testing, machine/structural component testing, measuring devices, etc. It can solve the problems of limited compensation effect of interference force and achieve the effect of improving control accuracy

Active Publication Date: 2022-05-27
DALIAN MARITIME UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

When an accurate model of the system cannot be obtained, the method described in the patent has a limited effect on compensating for disturbing forces

Method used

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  • A Disturbing Force Compensation Method for Two Degrees of Freedom Electro-hydraulic Vibration Table
  • A Disturbing Force Compensation Method for Two Degrees of Freedom Electro-hydraulic Vibration Table
  • A Disturbing Force Compensation Method for Two Degrees of Freedom Electro-hydraulic Vibration Table

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Embodiment Construction

[0043] The present invention will be further described below in conjunction with the accompanying drawings. like Figure 1-3As shown, a method for compensating interference force of a two-degree-of-freedom electro-hydraulic vibration table, the two-degree-of-freedom electro-hydraulic vibration table includes two vertical valve control cylinder mechanisms, a large Hooke hinge 4, a support 3, and an upper platform 5 and lower platform 6; the two vertical valve-controlled cylinder mechanisms are No. 1 valve-controlled cylinder mechanism 1 and No. 2 valve-controlled cylinder mechanism 2; the No. 1 valve-controlled cylinder mechanism 1 and No. 2 valve-controlled cylinder mechanism The lower end of the cylinder mechanism 2 is connected to the lower platform 6 through respective ball joints, and the upper end is connected to the upper platform 5 through respective ball joints respectively, and the upper platform 5 is connected to the support 3 through a large Hooke hinge 4. The lowe...

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Abstract

The invention discloses a method for compensating interference force of a two-degree-of-freedom electro-hydraulic vibrating table, which comprises the following steps: taking the two-degree-of-freedom acceleration reference signal as the input signal of a reference signal generator module by multiplying it to the left by a matrix J; The output signal of the module r a ; will r a As the input signal of the integrator 1 module, the output signal r v ; will r v As the input signal of the integrator 2 module, the output signal r x ; Collect the displacement signal x, velocity signal v, acceleration signal a of the hydraulic cylinder piston rod of each valve-controlled cylinder mechanism and the pressure difference signal P between the two chambers of the hydraulic cylinder L ; put the signal r x 、r v 、r a ,x,v,a,p L As the input signal of the disturbance force compensation controller module, calculate the output signal u of the disturbance force compensation controller module; use the output signal u of the disturbance force compensation controller module as the driving signal of the two valve control cylinder mechanisms, and input it to the two valves The cylinder control mechanism drives the movement of the two-degree-of-freedom electro-hydraulic vibration table. The invention obviously improves the control precision of the two-degree-of-freedom electro-hydraulic vibrating table.

Description

technical field [0001] The invention relates to a two-degree-of-freedom electro-hydraulic vibration table, in particular to a method for compensating disturbance force of a two-degree-of-freedom electro-hydraulic vibration table. Background technique [0002] The two-degree-of-freedom electro-hydraulic vibration table is the key equipment for large-scale structure or equipment vibration environment simulation. By reproducing the acceleration signal measured in the environment, the anti-vibration performance of the structure or equipment in the vibration environment is assessed. It is widely used in aerospace, bridge construction, and shipbuilding. , vehicles and other fields. The control system is the core technology of the electro-hydraulic vibration table. [0003] The two-degree-of-freedom electro-hydraulic vibration table is driven by two sets of valve-controlled cylinder mechanisms, and has two degrees of freedom of motion, roll and pitch. The controller design of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M7/06G01M7/02
CPCG01M7/06G01M7/022
Inventor 关广丰范大莽熊伟王海涛马文琦
Owner DALIAN MARITIME UNIVERSITY
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