Research on the controller of the digital cabin pressure regulating system based on FIMF

Based on the cabin pressure regulating system characters of the nonlinear, larger inertia and time varying parameter, the arithmetic of fuzzy immune feedback (FIMF) was proposed to adjust PID control parameters real time and increase response and control capability of pressure loop, and using immune algorithm adjusting pressure loop control parameters real time which has optimizing performance and using fuzzy algorithm as operator function. The simulation results show that cabin pressure and pressure change rate satisfy the rule of environment control system, and the effectiveness of the new control strategy proposed in this paper was proved.