Simulation modeling method of electro-hydraulic servo valve based on Modelica language

An electro-hydraulic servo valve, simulation modeling technology, applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problem that basic components cannot be reused, and analysis methods cannot reflect the working principle and mathematical Model, control block diagram model is not easy to analyze problems such as hydraulic servo system

Inactive Publication Date: 2012-06-27
SHANGHAI JIAO TONG UNIV
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Problems solved by technology

[0006] Therefore, the traditional electro-hydraulic servo valve has the following defects: the analysis method cannot reflect the working principle and mathematical model of the electro-hydraulic servo valve starting from the underlying components, and the calculation causality of various physical quantities needs to be consi...

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  • Simulation modeling method of electro-hydraulic servo valve based on Modelica language
  • Simulation modeling method of electro-hydraulic servo valve based on Modelica language
  • Simulation modeling method of electro-hydraulic servo valve based on Modelica language

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Embodiment Construction

[0035] Below in conjunction with accompanying drawing, the present invention will be further described as follows:

[0036] as attached figure 1 As shown, it is the traditional electro-hydraulic servo valve analysis method. The analysis method using the block diagram cannot faithfully reflect the structural characteristics of the electro-hydraulic servo valve. It is inconvenient to modify the parameters, and it is not easy to substitute into the servo system for overall design and analysis.

[0037] as attached figure 2 , image 3 shown, with figure 2 Based on the basic analysis principle of the present invention, aiming at the object-oriented nature of the Modelica language, the system is decomposed in a targeted manner, and the system is built using the components that have been modeled. attached image 3 For the analysis process of the present invention, the completed electro-hydraulic servo valve model is compiled and simulated by setting simulation parameters, step ...

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Abstract

The invention relates to the technical field of electro-hydraulic servo valve simulation systems, in particular to a simulation modeling method of electro-hydraulic servo valve based on a Modelica language, which includes the following steps: 1, system disassembly; 2, component level modeling; 3, subsystem level modeling; 4, system level modeling; 5, simulation control; and 6, simulation result demonstration. The simulation modeling method of the electro-hydraulic servo valve based on the Modelica language utilizes multi-territoriality, non-causality and object orientation of the Modelica language to perform secondary development, an obtained electro-hydraulic servo valve simulation model can faithfully reflect operating conditions and characteristics of the electro-hydraulic servo valve and substitute a electro-hydraulic servo system to conduct further system analysis and design, and the simulation modeling method can provide excellent analysis tools and analysis approaches for servo researching and working personnel.

Description

[technical field] [0001] The invention relates to the technical field of an electro-hydraulic servo valve simulation system, in particular to an electro-hydraulic servo valve simulation modeling method based on Modelica language. [Background technique] [0002] In actual production practice, construction machinery such as concrete pump trucks and truck cranes need to achieve certain control accuracy and dynamic performance, while the traditional hydraulic system lacks process control of hydraulic actuators, so it cannot achieve high control accuracy with excellent dynamic performance. Therefore, it is very necessary to introduce electro-hydraulic components that can realize process control in the existing hydraulic system to achieve higher control accuracy and better dynamic performance. The control method using electro-hydraulic components for process control, that is, electro-hydraulic servo components, is called electro-hydraulic servo control. As a branch of servo contr...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 李明荆建平孟光仲作阳明媚刘兴星
Owner SHANGHAI JIAO TONG UNIV
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