摘要
飞机燃油系统地面全机模拟试验系统流量模拟子系统用于模拟发动机燃油流量;针对某型飞机燃油系统发动机流量范围很大,允许的压力损失却很小的特点,提出分段控制与分段测量的方法;分段控制会带来切换抖动问题,采用基于二自由度模糊自适应PID的控制方法;仿真结果表明,这种方法既可以实现系统大范围流量的跟踪,也可以减小流量切换过程中出现的抖动,有较好的控制效果。
Abstract： Flow simulation subsystem of ground simulation test for aircraft fuel system aims to simulate fuel flow of engine. In a certain airplane fuel system, the flow scope is very broad. In order to ensure the control precision in the whole range, the method of subsection con- trol and measuring has been put forward. A control algorithm based on fuzzy adaptive PID with two--degree of freedom has been adopted, since subsection control will bring out the switchover fluctuation phenomenon. The results of simulation show that this algorithm can realize the curve tracking of the wide--range flow and reduce the fluctuation in the flow switchover process, That is to say, this algorithm has a preferable control effect.
出处
《计算机测量与控制》
CSCD
北大核心
2012年第7期1840-1842,1857,共4页
Computer Measurement &Control
关键词
流量模拟
分段控制
切换抖动
二自由度模糊自适应PID
flow simulation
subsection control and measuring
switchover fluctuation
fuzzy adaptive PID with two--degree of freedom
