直升机砂尘环境试验风洞的浓度控制策略及仿真  

Concentration Control and Simulation of Sand/dust Environmental Test tunnel for Helicopter

作　　者：李运泽[1] 袁领双[1] 王浚[1] 

机构地区：[1]北京航空航天大学航空科学与工程学院,北京100083

出　　处：《系统仿真学报》2005年第5期1241-1243,共3页Journal of System Simulation

摘　　要：砂尘环境会对直升机工作性能和可靠性产生重要影响,针对直升机砂尘环境试验风洞内的砂尘浓度控制难题,在对其受控对象进行动态特性分析的基础上,建立起砂尘浓度变化的动态特性模型,提出了一种旋转给料器转速调节与气力输送系统调节阀开度调节相结合的沙尘浓度控制策略,并对其控制效果进行了仿真研究,仿真结果表明这一控制策略可以有效提高直升机砂尘环境试验风洞的砂尘浓度控制效果。To control the sand/dust concentration effectively is a major difficulty of sand/dust environmental test tunnel's control system design. Based on the dynamical analysis, a mathematical model of sand/dust concentration change is built up, and a concentration control strategy, in which feeder speed and valve's open degree are adjusted at same time, is presented and simulated. Simulation results show that this control strategy can effectively improve the control effect of sand/dust concentration in helicopter's environmental test tunnel.

关 键 词：直升机 砂尘 环境试验风洞 浓度控制 仿真 

分 类 号：TB114[理学—概率论与数理统计] TH11[理学—数学]