直升机/涡轴发动机综合系统鲁棒抗扰控制设计

提出了一种直升机/涡轴发动机综合系统鲁棒抗扰控制方法。分别设计了基于线性矩阵不等式(LMI)的鲁棒保性能控制的直升机四通道多变量控制器和涡轴发动机转速控制器;为了进一步提高发动机自由涡轮转速环的抗扰能力,结合自抗扰控制(ADRC)方法,构建了涡轴发动机转速鲁棒保性能控制+扭矩ADRC补偿的控制方案,充分利用了ADRC控制强的干扰补偿能力,避免了鲁棒设计方法的保守性。在UH-60直升机/涡轴发动机综合模型仿真环境下通过模拟直升机大幅急速升降操作,验证了直升机/涡轴发动机综合系统所采用的鲁棒抗扰控制,尤其是涡轴发动机鲁棒自抗扰控制,具有理想的抗扰控制效果,能够抑制直升机机动操作过程中大的扭矩扰动对涡轴发动机造成的不利影响,从而使直升机具有更好的机动能力。

Robust Disturbance Rejection Control Design for Integrated Helicopter System/Turbo-shaft Engine

A robust anti-disturbance control scheme for an integrated helicopter system and turbo-shaft engine is proposed. Firstly, a four-loop multi-variable controller of the helicopter and a free turbine rotor speed controller of the turbo-shaft engine are designed separately based on the linear matrix inequality (LMI) robust optimal guaranteed cost control method. Secondly, a new engine rotor speed controller combined with torque active disturbance rejection control (ADRC) compensation is proposed to enhance the disturbance rejection capability of the engine loop while keeping the LMI controller for the integrated system unchanged, and the new control scheme makes full use of the disturbance compensation ability of the ADRC controller. Finally, numerical simulation is developed to verify the proposed control scheme for a hybrid system, and the results show that the new control scheme has better dynamic disturbance rejection ability, which enables the helicopter to exhibit much greater maneuverability than the traditional control system, as shown by the simulation of rapid lifting up and down of the helicopter on the integrated UH-60 helicopter/turbo-shaft engine simulation platform.