伺服阀滑阀副径向间隙和圆角估计方法  

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

作　　者：王卓[1] 王聃[1] 闫立东 王民 张宇[2] WANG Zhuo;WANG Dan;YAN Li-dong;WANG Min;ZHANG Yu(School of Artificial Intelligence and Automation, Huazhong University of Science and Technology, Wuhan, Hubei 430074;Beijing Research Institute of Precise Mechanical and Electronic Control Equipment, Beijing 100076)

机构地区：[1]华中科技大学人工智能与自动化学院,湖北武汉430074 [2]北京精密机电控制设备研究所,北京100076

出　　处：《液压与气动》2022年第2期176-183,共8页Chinese Hydraulics & Pneumatics

摘　　要：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,采用人工蜜蜂算法对比不同核函数(多项式、RBF和Sigmoid)的估计效果;选取最佳核函数,实现径向间隙和圆角的参数估计。通过验证,提出的方法能有效估计径向间隙和圆角的大小。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.

关 键 词：径向间隙 圆角 仿真 支持向量机 

分 类 号：TH137[机械工程—机械制造及自动化]