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Pose control method for dual-degree-of-freedom dual-electro-hydraulic vibration table array simulation system

A technology for simulating systems and control methods, applied in feedback control, vibration testing, and testing of machine/structural components, etc. It can solve the problems that the control method of a single shaking table cannot be directly applied to the control array simulation system

Active Publication Date: 2019-05-03
DALIAN MARITIME UNIVERSITY
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Problems solved by technology

Existing control methods for a single shaker cannot be directly applied to control the motion of an array simulation system

Method used

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  • Pose control method for dual-degree-of-freedom dual-electro-hydraulic vibration table array simulation system
  • Pose control method for dual-degree-of-freedom dual-electro-hydraulic vibration table array simulation system
  • Pose control method for dual-degree-of-freedom dual-electro-hydraulic vibration table array simulation system

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Embodiment Construction

[0047] The present invention will be further described below in conjunction with the accompanying drawings. Such as Figure 1-4 As shown, a pose control method of a two-degree-of-freedom dual electro-hydraulic shaking table array simulation system, the two-degree-of-freedom dual electro-hydraulic shaking table array simulation system includes a lower platform 19, a six-degree-of-freedom shaking table, two DOF shaking table, pier A14, pier B15 and bridge plate 16.

[0048] The six-degree-of-freedom vibration table includes three horizontal valve-controlled cylinder mechanisms, three vertical valve-controlled cylinder mechanisms, an upper platform B18 and three reaction walls, and the three horizontal valve-controlled cylinder mechanisms are respectively No. 5 valve-controlled cylinder mechanism 5, No. 6 valve-controlled cylinder mechanism 6 and No. 7 valve-controlled cylinder mechanism 7, the three vertical valve-controlled cylinder mechanisms are respectively No. 8 valve-cont...

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Abstract

The invention discloses a pose control method for a dual-degree-of-freedom dual-electro-hydraulic vibration table array simulation system. The method comprise steps that an input signal and an outputsignal of a PI controller are obtained; a pose signal yf fed back by the array simulation system is obtained; a redundant force compensation signal xf is calculated; an input signal and an output signal of the PID controller are obtained; the array simulation system is driven to move. The method is advantaged in that the redundant force compensation signal is calculated by collecting differentialpressure signals of hydraulic cylinders in 10 valve-controlled cylinder mechanisms, driving signals of the valve-controlled cylinder mechanisms are adjusted through utilizing the redundant force compensation signal, so the redundancy force in each valve-controlled cylinder mechanism is reduced to within 15% of the rated oil supply pressure, the test is performed on an Advantech industrial controlcomputer IPC-610 with a CPU of Intel PD 2.6G and a memory of 1G, the algorithm's run cycle is less than 1ms, and experimental requirements of the array simulation system can be met.

Description

technical field [0001] The invention relates to an electro-hydraulic vibration table, in particular to a pose control method of a two-degree-of-freedom dual electro-hydraulic vibration table array simulation system. Background technique [0002] Electro-hydraulic vibration table is an important equipment for vibration environment simulation, widely used in aerospace, automobile, ship, bridge and civil engineering construction and other fields. With the development of science and technology, the structural size of the test piece is getting larger and larger. It is difficult to achieve the specified motion state to simulate the real vibration environment in the vibration simulation experiment of a single shaking table. The shaking table array simulation system consists of two or more shaking tables, which creates the necessary conditions for the vibration simulation test of long-span structural specimens. [0003] Most of the array simulation systems are redundant drive syst...

Claims

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Application Information

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IPC IPC(8): G01M7/06G05D3/12
Inventor 关广丰徐显桩沈如涛熊伟王海涛马文琦
Owner DALIAN MARITIME UNIVERSITY
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