基于广义既约梯度法的航空发动机性能寻优控制

Based on generalized reduced gradient method for aero-engine performance seeking control

提出了一种基于航空发动机约束物理意义的寻优方法,并将其应用于性能寻优控制之中。该方法根据航空发动机约束的物理特性完全已知的特点,利用起作用集法和既约梯度法将发动机非线性约束寻优问题转化为低维的无约束寻优问题,提高了计算速度。应用该方法对全包线内的工作点,对最大推力、最低油耗、最低涡轮进口温度和加力最大推力等模式进行了寻优,给出了寻优结果。

Presented a new method based on the physical characteristic of aero - engine constraint for performance seeking control ,which consists of active set method and generalized reduced gradient method. Engine nonlinear constraint optimization question can be transformed into unconstraint and low dimension search optimization. Therefore, optimization speed is increased. Then, this method is applied to three control modes which are maximum thrust mode, minimum fuel flow mode and minimum turbine temperature mode,respectively. Calculation results are presented.