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Velocity synchronous loading decoupling method and device for structural test system

A technology for structural testing and decoupling devices, which is applied in general control systems, testing of machines/structural components, measuring devices, etc., and can solve problems such as decreased control accuracy

Active Publication Date: 2019-08-27
BEIHANG UNIV
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  • Abstract
  • Description
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Problems solved by technology

[0014] In view of the above problems, the present invention provides a speed synchronous loading decoupling method and device, which can be applied to a structural test system with multiple loading channels, and can solve the problem of control accuracy caused by mutual coupling of loading forces among multiple loading channels. falling problem

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  • Velocity synchronous loading decoupling method and device for structural test system
  • Velocity synchronous loading decoupling method and device for structural test system
  • Velocity synchronous loading decoupling method and device for structural test system

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Embodiment Construction

[0031] The velocity synchronous loading and decoupling method and device for a structural test system according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0032] image 3 A structural testing system is shown having multiple loading channels in accordance with an embodiment of the invention. To simplify the description, image 3 Only three loading channels are shown in , and the cantilever beam is loaded by a valve-controlled cylinder. Such as image 3 As shown, a cantilever beam 301 as a bearing object is fixed on a base 303 through a supporting wall 302 . where u i (i=1, 2, 3) represents the control signal from the servo valve 304 on each loading channel, F i (i=1, 2, 3) represent the force signals collected by the force sensors 305 on the respective loading channels.

[0033] Specifically, when a certain loading channel i (i=1, 2, 3) applies a load F to the cantilever beam 301 i , the cant...

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Abstract

The invention provides a speed synchronous decoupling method for a structure test system. The method comprises the following steps that all loading channel control signals from a plurality of loading channels of the structure test system are subjected to linear combination, so that decoupling compensation signals of all loading channels are obtained, and the decoupling compensation signals are used for compensating all loading channel control signals. The invention also provides a speed synchronous decoupling device for the structure test system.

Description

technical field [0001] The invention relates to a speed synchronous loading decoupling method and device for a structural test system. Background technique [0002] The structural test system refers to physically applying alternating loads to the body structure through the loading points all over the body of the aircraft, so as to observe the performance parameters of the body structure, so as to make a correct evaluation of the bearing capacity and fatigue life of the body structure of the aircraft. test system. Because multiple loading channels of the structural test system apply different loads to a load-bearing object at the same time, coupling interference will occur between the loading channels. [0003] In fact, the mutual coupling interference between the channels of the structural test system is a force closed-loop problem with external interference. At present, there are existing technologies on how to improve the control accuracy of the force closed-loop system. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M13/00G05B13/04
Inventor 尚耀星赵一飞焦宗夏张小书
Owner BEIHANG UNIV
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