Modeling and Analysis of Electro-hydraulic Load Simulation Hydraulic System for Ship Steering Gear
In order to solve the problem that surplus force affects the accuracy and dynamic characteristics of the electro-hydraulic load simulation device,an electro-hydraulic load simulation hydraulic system is built.The mathematical model of the valve-controlled hydraulic cylinder position servo system and force servo system of the electro-hydraulic load simulation device is constructed based on the mathematical model of the electro-hydraulic servo valve and hydraulic cylinder.AMESim software is used to analyze the displacement and loading force of the loading cylinder of the electro-hydraulic load simulation hydraulic system,and the analysis results show that the overshoot of force is large.Therefore,a pilot type proportional pressure reducing valve is proposed to reduce the surplus force caused by external load impact.The simulation and experimental results show that system pressure shock can be suppressed by the pilot operated proportional reducing valve,and the installation of pilot operated proportional pressure reducing valve can effectively reduce the surplus force of the system.The results in can provide a theoretical basis for the suppression of surplus force in electro-hydraulic load simulation device.
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维普
