涡扇发动机加力过程非线性最优控制研究

Nonlinear optimal control of turbofan engine afterburning process

关键词:  涡扇发动机  加力过程~+  最优控制~+  FSQP算法~+

Key words:  Turbofan engine  Afterburning process~+  Optimal control~+  FSQP algorithm~+

摘要:

为了提高航空发动机的过渡态性能,研究了涡扇发动机加力过程非线性最优控制原理和实现方法,分别提出了基于改进FSQP算法的涡扇发动机接通加力过程和断开加力过程最优控制方法。该最优控制算法能够有效的解决涡扇发动机加力过程的非线性最优控制问题,可以在满足控制过程中的各项约束条件并保持核心机状态不变的前提下,实现最优控制目标。通过仿真证明了所提出的控制算法的可行性以及良好的控制效果。

Abstract:

In order to improve the transient performance of turbofan engine,the nonlinear optimal control principle and realization method for turbofan engine afterburning process is studied.Taking advantage of the improved FSQP algorithm,two nonlinear optimal control methods,which for the entry afterburning process and quit afterburning process,are presented.By using these methods,the problem of optimal control for turbofan engine afterburning process can be solved effectively.The optimal control objective will be achieved with the state of the core engine unchanged.During the control process,each constraint is also always satisfied.Finally,the simulation results indicate these optimal control algorithm’s feasibility and better performance.