Simulation modeling method for jet pipe electro-hydraulic servo valve

Abstract

The invention discloses a simulation modeling method for a jet pipe electro-hydraulic servo valve, and belongs to the field of mechanical hydraulic simulation modeling. The simulation modeling methodcomprises the steps that firstly, according to structure parameters and electromagnetic property parameters of a torque motor magnetic path, a torque motor magnetic path model is established in AMESim; secondly, an armature-feedback rod assembly is analyzed, and the motion equation of the armature-feedback rod assembly is obtained when the torque motor works; thirdly, a jet flow amplifier is analyzed, and the flow-pressure equation of the jet pipe amplifier is obtained; fourthly, a sliding valve assembly is analyzed, and the motion equation of a sliding valve element is obtained; and fifthly,an integrated valve AMESim simulation modeling model is established, and simulation modeling is conducted. On the basis of component principle and structure analysis, simulation modeling for the jet pipe electro-hydraulic servo valve is achieved in AMESim, the modeling process is simplified, an intelligent solver is adopted for improving the simulation precision, and direct physical connection between modules in different fields is achieved; and through parameter adjustment, valve simulation modeling is achieved, the simulation result meets the technology requirement, and a theoretical basis is provided for valve study.

Description

technical field [0001] The invention relates to a simulation modeling method of a jet tube electro-hydraulic servo valve, which belongs to the field of mechanical hydraulic simulation modeling. Background technique [0002] Hydraulic servo control technology is a comprehensive and interdisciplinary science and technology. It is not only an important branch of hydraulic technology, but also an important part of the control technology field. As the core component of the electro-hydraulic servo control system, the electro-hydraulic servo valve is an important bridge connecting the electrical part and the hydraulic part. It is a hydraulic component that converts weak electronic control signals into large hydraulic power in proportion and can output corresponding flow and pressure. Among the two-stage servo valves for flow control, the jet tube servo valve and the nozzle flapper servo valve are the most widely used. The biggest difference between the jet tube servo valve and the...

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Problems solved by technology

[0003] Because the flow field of the jet amplifier of the jet pipe servo valve is very complex, it is difficult to perform theoretical calculation and prediction on its performance

The current research results are often focused on the replacement of some materials of the valve, the improvement of its processing technology and the research on the test method of the valve. A complete and accurate mathematical model of the jet tube servo valve has not been given. Due to the lack of accurate Simulation design platform, the research on the jet tube servo valve is difficult and costly

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