Optimization of structural parameters of flow matching valve for electro-hydraulic actuator system based on AMESim
Taking the electro-hydraulic actuator system used for precision control of power switches in a certain power system as the research object,in view of the problem that its working characteristics do not meet the actual needs of the project,taking a study for the structural parameters of the flow matching valve as a key component,theoretical analysis,simulation analysis,and experimental testing were conducted on the working characteristics of the electro-hydraulic actuator system.Firstly,the internal structure of the valve and the working principle of the system were analyzed.Then,the mathematical model and simulation model of the electro-hydraulic actuator system were established,and the feasibility and accuracy of the simulation model were verified through experiments.Finally,the influence of the single-factor structural parameters of the flow matching valve on the operating characteristics of the electro-hydraulic actuator system was explored,the orthogonal tests were designed and conducted,and the optimal structural parameter combination scheme within the optional range was obtained.The research indicates that the structural parameters such as the preload force of the valve seat steel ball seal spring,the stiffness of the valve seat steel ball seal spring,and the initial covering amount of the valve port of the flow matching valve have an important impact on the working characteristics of the electro-hydraulic actuator system.Comparing with the original plan,the optimal structural parameters scheme,the system response time is shortened from133 ms to 42 ms,and the positioning accuracy is improved from 0.261%to 0.096%,which can effectively shorten the system response time,improve the system positioning accuracy,and meet the actual needs of the project.
hydraulic control valveelectro-hydraulic actuatorflow matching valveAMESimresponse timepositioning accuracyorthogonal test
NETL
NSTL
万方数据
