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主要研究涡轴发动机转速抗扰控制问题,提出了一种基于自抗扰控制技术(ADRC,Adaptive Disturbance Rejection Control)的涡轴发动机增量型串级抗扰控制器设计方法.一方面,采用串级控制结构,内环控制块模态的燃气涡轮转速,外环控制功率涡轮转速,使得内环扰动得到快速抑制.另一方面,每个子回路中通过扩张状态量观测实时地对被控对象内环进行扰动补偿.最后,基于直升机/发动机非线性综合仿真模型的数字仿真表明该控制方法显著改善了涡轴发动机功率跟随特性,提升了直升机/涡轴发动机综合闭环系统的可操控极限.
In this paper, we mainly study the anti-disturbance control of turboshaft engine speed and propose a design method of incremental cascade anti-disturbance turbine controller based on ADRC (Adaptive Disturbance Rejection Control) .On the one hand, Level control structure, gas turbine speed of the inner control block modal and power turbine speed of the outer ring so that the inner ring disturbance can be rapidly suppressed. On the other hand, in each sub-loop, the inner volume of the controlled object Loop disturbance compensation.Finally, the numerical simulation based on the helicopter / engine non-linear synthetic simulation model shows that the control method can significantly improve the power followability of the turboshaft engine and enhance the controllable limit of the helicopter / turbine engine integrated closed-loop system.