针对座舱压力调节系统的非线性、大惯性和参数时变特性,提出模糊增益调度控制方法.根据系统的输出误差和误差的一阶微分变化,利用模糊推理在线实时更改比例积分微分控制器参数以适应工作点的变化,使系统控制参数达到全局优化,解决了一般增益调度中控制参数只是对于某一工作点局部优化的问题;在确定比例系数和积分系数的隶属度函数时,引入了指数函数,在保证系统稳定的前提下,提高了系统的响应.实验结果表明,座舱压力及其变化率满足某型飞机环控系统规范要求,证明了该方法对座舱压力调节系统控制的有效性.%Based on the cabin pressure regulating system characters of the nonlinear, larger inertia and time varying parameter, the arithmetic of fuzzy gain scheduling was proposed in this paper. The control parameters could be optimized globally using the controller based on the fuzzy gain scheduling because the fuzzy inference was used to change the parameters of the controller online to adapt the change of work point according to the output error and error change rate. When deciding the membership functions of proportion coefficient and integral coefficient, the system response will become better in the premises of system stable if the exponent function is introduced. The experiment results show that cabin pressure and pressure rate of change meet the needs of a certain type of aircraft environmental control system specifications, and the effectiveness of the new control strategy proposed in this paper is proved.
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