高空舱真空度动态模拟系统研究  

Study on dynamic simulation system of vacuum degree in high-altitude cabin

作　　者：徐伟[1] 沈浩[2] 陈维建[1] 张大林[1] 

机构地区：[1]南京航空航天大学航空宇航学院,江苏南京210016 [2]中国民用航空上海航空器适航审定中心,上海200335

出　　处：《真空》2017年第5期22-26,共5页Vacuum

基　　金：江苏省自然科学基金(编号No.BK20140829);中央高校基本科研业务费专项资金(编号No.NS2016005);南京航空航天大学研究生创新基金(实验室)开放基金(编号kfjj20150110)

摘　　要：对实验室现有真空系统进行了改建,采用数字控制器对各调节阀门进行调节,实现高空舱真空度的动态模拟功能。将增量式PID控制算法运用在高空舱内的真空度及其压升率的动态控制中,在此基础上根据真空系统及调节阀门的非线性特性提出了分段式控制算法,并针对舱体内外压差对输出量进行修正,最终将完整的控制律运用在数字控制器中进行试验,结果表明,该控制律具有良好的控制效果。The vacuum system in a laboratory was reconstructed, and the digital controller was used to adjust the valve to realize the dynamic simulation of the vacuum degree in the high-altitude cabin. The incremental PID control algorithm was applied in the dynamic control of vacuum degree and pressure rise rate in the high-altitude cabin. Then, subsection control algorithm was proposed according to the nonlinear characteristics of the vacuum system and the regulating valve. The output signal was corrected according to internal and external pressure difference of high-altitude cabin. Finally, the whole control law was applied to the digital controller for testing. The results show that the control law has good control effect.

关 键 词：真空 非线性控制 PID控制 压升率 

分 类 号：TP29[自动化与计算机技术—检测技术与自动化装置]