风洞主排气阀电液伺服系统仿真研究与设计  

Simulation and Design for the Electro-hydraulic Synchronization Control System of the Main Exhaust Valve on the Wind Tunnel

作　　者：郁文山[1,2] 金志伟 刘龙兵[1] 邢盼[1] YU Wenshan;JIN Zhiwei;LIU Longbing;XING Pan(High Velocity Aerodynamics Institute,China Aerodynamics Research and Development Center,Mianyang Sichuan 621000,China;College of Intelligent System,National University of Defense Technology,Changsha Hunan 410073,China)

机构地区：[1]中国空气动力研究与发展中心高速所,四川绵阳621000 [2]国防科技大学智能科学学院,湖南长沙410073

出　　处：《机床与液压》2019年第16期135-138,151,共5页Machine Tool & Hydraulics

摘　　要：2.4 m风洞是国内唯一的两米量级引射式、半回流、暂冲型跨声速风洞,风洞核心流Ma由p 0和p s按等熵公式计算得到,其中稳定段总压通过4套主排气阀进行精确控制,其定位和同步精度直接影响到风洞流场控制的精准度。针对主排气阀电液伺服系统的负载多变、油缸内泄漏、参数及器件性能差异对同步控制精度的影响,建立了电液伺服系统精确数学模型,设计了基于虚拟主轴的多轴主从模糊控制策略,并基于MATLAB软件进行了仿真分析。仿真结果表明:系统调节时间短、同步精度高。In a intermittent transonic wind tunnel,it is necessary to control the main exhaust valve while keeping the stagnation constant.In order to improve the control precision and synchronization performance of the main exhaust valve,an accurate mathematical model of the electro-hydraulic servo system was built,to eliminate the influence of load disturbance,inner leaks,parameters and device performance difference;based on the virtual axis,master-slaver fuzzy PI control strategy was designed.The simulation results show that the system has high synchronization precision and short adjust time.

关 键 词：风洞 主排气阀 电液伺服 仿真 同步性能 

分 类 号：TH137.5[机械工程—机械制造及自动化]