Abstract: The LTR control for aeroengines was studied. A simple and effective approach for designing the target loop of minimum phase plant was presented. The approach derived the target loop directly from the bandwidth specification of the control system. The target loop designed is not only stable but dynamically decoupled as well. Since transfer function of the target loop can be recovered by loop transfer recovery, the LTR control system based on the target loop designed by this approach has good performances including decoupling. Simulation results of LTR control for a turbofan engine show the effectiveness of the approach.

Key words: Aircraft engine;Engine control;Loop transfer recovery control;Target loop;Robost control

摘要： 研究了航空发动机的传递函数回路法 (LTR)控制。提出了一种简单而有效的适用于最小相位对象的目标回路设计方法 ,它根据控制系统的频带宽度要求直接得出目标回路 ,所设计目标回路不仅稳定而且传递函数为对角阵。由于目标回路的传递函数可以通过LTR步骤加以恢复 ,因而此目标回路的LTR控制系统具有良好的性能 (包括解耦性能 )。将此设计方法应用于某型涡扇发动机的LTR控制 ,取得了良好的控制效果。

关键词: 航空发动机;发动机控制;LTR控制;目标回路;鲁棒控制