关键词: 喷口控制器;未建模动态; 控制逻辑;动态性能

Abstract: In order to build a nozzle dynamic model based on aeroengine non-linear model,it will induce an error between the unmodeling dynamics and linear model dynamics resulting in the nozzle controller hard to meet its design requirement and even worse dynamics performance in nozzle control in large range flight envelope. The PI controller design performance can be affected by the sense noise, the position and velocity saturation of the actuators and the integrator wind-up of PI controller. This paper describes a design method for nozzle controller with actuators and a method of controlling logic design to surpass the saturation limitation disturbance to address all the problems above. To improve the robustness of nozzle controller, firstly, a linear dynamic augmented model with actuator should be built. Secondly, by using iterative linear inequality the robust nozzle PI controller can be obtained through augmented model calculation and saturation correction will be applied to control output. This has been verified in hardware in loop of aeroengine and achieved high performance of nozzle robust control in overall flight envelop. 

Key words: Nozzle controller; Unmodeling dynamics; Control logic; Dynamic performance