航空发动机多变量 PI 型鲁棒控制器

 首先用奇异值分解法，将航空发动机不同平衡点的小偏离线性模型统一为一个具有结构参数扰动的线性模型，然后应用鲁棒H∞控制理论及PI型H∞控制设计技术，设计了PI型鲁棒串级控制器，实现了低压转速和涡轮后温度同时保持常数的双变量发动机调节方案。最后采用某型双转子涡喷发动机气动热力学非线性数字模拟器，对所设计的控制器进行了仿真评估，结果表明控制系统具有良好的动态响应及鲁棒稳定性。

PI TYPE MULTIVARIABLE ROBUST CONTROLLER DESIGN OF AERO ENGINE

The linear models of an aero engine at different equilibrium points were uniformly transferred into a linear model with norm bounded structured parameter uncertainty with singular value decomposition techniques, then a PI type robust H ∞ series controller was designed by applying robust H ∞ control theory and using PI type H ∞ controller design method, and the two variable regulating scheme was realized in which both the lower pressure compressor speed and the after turbine temperature were kept constant. Simulations on nonlinear aero thermodynamic simulator were also implemented and the results showed that both the robust stability and the robust performance were achieved.