The pressure control system of bleed tank of aircraft fuel system analogue experiment on ground is a electro - hydraulic pneumatic control system. Because of the compressibility of gas and the relationship of gas pressure , volume and temperature variation, the system has strongly non - linear and time - varying characteristic. In view of the characteristics of the system, the fuzzy self - adaptive PID control method is proposed in this paper, which combines the fuzzy controller' s advantage of quick response and the strong anti - jamming ability and the PID controller' s characteristics of strong robust. Simulation analysis showed that the method is effective to improve the system of nonlinear time - varying static and dynamic characteristics. The analysis of simulation shows that this control method has improved dynamic and static performance of the non - linear and time - varying system.%飞机燃油系统地面模拟试验的引气箱压力控制系统是电、液气压控制系统;由于气体的可压缩性及控制过程中气体压力、体积、温度三者之间的变化,系统具有很强的非线性和时变特性;针对系统这些特点,提出了基于模糊自适应PID的控制策略,将模糊控制器响应快、抑制扰动能力强的优点与PID控制器鲁棒性强的特性融为一体;仿真分析表明该方法有效地提高了非线性时变系统的动、静态特性.
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