Any pressure relief curve pressure control method of hydraulic pressure device

A control method and curve pressure technology, applied in fluid pressure actuation devices, fluid pressure actuation system testing, fluid pressure actuation system components, etc., to meet process requirements and improve the effect of pressure relief pressure curve control accuracy

Active Publication Date: 2017-11-24
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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AI Technical Summary

Problems solved by technology

There is no published precise control method for the pressure relief process of the arbitrary curve of the low-pressure hydraulic system. In order to meet the needs of material forming, material mechanics research, and high-pressure environment simulation, it is necessary to invent a continuous and linear control method to achieve pressure relief. Precise control of the pressure curve

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  • Any pressure relief curve pressure control method of hydraulic pressure device
  • Any pressure relief curve pressure control method of hydraulic pressure device
  • Any pressure relief curve pressure control method of hydraulic pressure device

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Embodiment Construction

[0051] The present invention will be further described below in conjunction with the accompanying drawings.

[0052] as attached figure 1 , 2 As shown, a pressure control method for an arbitrary pressure relief curve of a hydraulic pressure device, including: a calculation method for the opening degree of the proportional relief valve at the beginning of pressure relief, a calculation method for the opening degree of the proportional relief valve for open-loop pressure relief, and a calculation method for closed-loop pressure relief control Method, by running the above calculation method on the processor of the control system, the precise control of the pressure relief process is realized. Specifically:

[0053] 1) Calculation method of proportional relief valve opening at the beginning of pressure relief, which requires:

[0054] a) design experiments, and carry out mathematical model modeling on the hydraulic pressure loading system;

[0055] b) The data acquisition platfo...

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Abstract

The invention discloses a more accurate any pressure relief curve pressure control method of a hydraulic pressure device. The method comprises a pressure relief starting proportion overflow valve opening degree computing method, an opened-loop pressure relief proportion overflow valve opening degree computing method and a closed-loop pressure relief control computing method, the above computing methods are operated on a control system processor, and accurate control over the pressure relief process is achieved. According to the any pressure relief curve pressure control method of the hydraulic pressure device, the requirement of laboratories or industrial scientific research and production for accurate pressure relief pressure curve control can be met. The control method is already applied to high-accuracy pressure curve control in the oil press pressure relief process, the pressure relief pressure curve control accuracy of equipment is improved, and the process requirement of high-performance powder energetic material forming is met.

Description

technical field [0001] The invention relates to a control method, in particular to a pressure control method of an arbitrary pressure relief curve of a hydraulic pressure device, and belongs to the technical field of mechanical equipment control. Background technique [0002] The hydraulic pressure drive system is widely used in the fields of material forming and testing, high-pressure environment simulation, etc. Compared with electric drive, explosive force drive, pneumatic drive and other methods, hydraulic pressure drive has the advantages of large drive force value, good flexibility in the force drive process, Easy to control, good stability and so on. In the research of material forming process, material mechanical performance parameters such as material uniformity, stiffness, strength and density have a great relationship with the forming pressure, and the pressure control curve of the pressing process presents high-order and multi-segment characteristics; in the rese...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F15B21/02F15B19/00
CPCF15B19/007F15B21/02
Inventor 梁晓辉范玉德张程滔曹志伟孙同辉
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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