The inlet/exhaust pressure control system of ATF( altitude simulated test facility) is a kernel facility which is used to simulate the flight altitude and rapidity conditions of aero-engine. The control quality of inlet/ exhaust pressure control system is the main factor which decides the simulation precision of ATF. However, selection of the control parameters is an important factor affecting the dynamic characteristic of a control system. Genetic algorithm is studied and then applied to the inlet/exhaust pressure control system in order to get the optimization parameters of PID controller. According to the simulation results, genetic algorithm can get a group of optimization parameters.%高空模拟试验台进/排气系统是实现地面模拟发动机空中飞行高度、速度条件的核心试验设备,其控制效果的优劣直接影响着高空模拟试验的精度.而控制参数的选择是决定一个控制系统动态特性的关键要素,通过对遗传算法的研究,将该算法应用到进/排气系统进气压力自动控制系统中,对自动控制系统的PID控制参数进行优化,仿真结果表明,遗传算法以其优秀的全局寻优能力,能够对进/排气系统发动机进气压力自动控制系统PID控制参数进行较好地优化,使得控制系统获得良好的控制效果.
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