伺服阀滑阀副径向间隙和圆角估计方法

电液伺服阀滑阀副的径向间隙影响泄漏流量,阀口棱边圆角影响开口处非线性区流量,目前对电液伺服阀滑阀副的径向间隙和圆角难以实现快速和低成本测量.基于叠合量气动流量曲线,提出了一种采用支持向量机回归的径向间隙和圆角估计方法.采用流体力学有限元仿真方法,获取不同径向间隙和圆角的气动流量仿真曲线;对不同的仿真曲线进行机器学习,采...

Estimation Method for Servo Valve Slide Valve Couples Radial Gap and Fillet

Electro-hydraulic servo valve radial gap affects the leakage flow,spool valve arris-edge fillet affects the non-linear flow characteristics.It is hard to achieve a fast and low-cost measurement of the electro-hydraulic servo valve radial gap and fillet.A radial gap and fillet estimation method was proposed by support vector regression on the flow curve.The CFD simulation method was used to obtain the pneumatic flow simulation curves of different radial gaps and fillets.Based on machine learning of different simulation curves,estimation results of different kernel functions(polynomial and the RBF and sigmoid)were compared by artificial bee algorithm.The radial gap and fillet were estimated according to the best kernel function.By experiment and engineering practice,estimation accuracy of radial gap and fillet is high.