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针对航空发动机控制计划中加减速供油线对主燃油限制的控制计划,基于状态空间理论和线性矩阵不等式LMI(Linear Matrix Inequality)的方法,提出了用于解决航空发动机控制中由于主燃油供油量超加减速供油线后导致控制效果明显变差甚至出现震荡问题的抗积分饱和IWP(Integral Wind-up Protection)算法,给出了同时保证闭环稳定性和饱和抑制性的LMI解。以某涡扇发动机为被控对象,基于LMI方法在已有的控制器上进行了IWP的设计,并进行了发动机非线性动态系统性能仿真验证。结果表明,在已设计的PI控制器结构中嵌入IWP补偿器构成具有抗积分饱和作用的PI控制器,能提高控制系统的动静态性能。
Aiming at the control plan of the main fuel limit for the acceleration and deceleration oil supply line in the aero-engine control plan, based on the state space theory and the Linear Matrix Inequality (LMI) method, After over-speeding and decelerating the oil supply line, the anti-integral-saturation IWP (Integral Wind-up Protection) algorithm with obvious control effect or even concussion problems has been proposed. The LMI solution which guarantees both the closed-loop stability and the saturation suppression is given. Taking a turbofan engine as a controlled object, IWP was designed on the existing controller based on LMI method, and the simulation of engine nonlinear dynamic system performance was carried out. The results show that imbedding the IWP compensator in the designed PI controller constitutes a PI controller with anti-integral saturation effect, which can improve the dynamic and static performance of the control system.