基于机载模型的航空动力装置的在线解耦控制  

Online Decoupling Control of Multivariable Aircraft Powerplant Based on Onboard Model

作　　者：陈思成 陈淑仙 安斯奇 CHEN Si-cheng;CHEN Shu-xian;AN Si-qi(Civil Aviation Flight University of China,Guanghan Sichuan 618307,China)

机构地区：[1]中国民用航空飞行学院,四川广汉618307

出　　处：《计算机仿真》2022年第7期22-27,共6页Computer Simulation

基　　金：国家自然科学基金项目(51306201);中国民用航空飞行学院航空发动机运行安全与控制技术研究中心项目(JG2019-02);中国民用航空飞行学院研究生科研创新项目资助(X2021-7)。

摘　　要：针对航空动力装置工况点的不确定性及传统的静态解耦方法不能满足工况点的变化的情况,提出了基于机载LPV模型的在线解耦控制方法。方法在传统PID控制和前馈补偿解耦的基础上,进一步采用机载LPV模型实时解算出的系统参数输入到解耦器中,再以相对增益判据去判断在此时工况点下系统的耦合程度,并得到对应工况下的前馈解耦补偿,从而完成在线解耦控制。以电驱动变距螺旋桨动力装置的双回路控制系统的在线解耦为例,建立仿真系统验证该在线解耦方法的可行性和有效性。仿真结果表明:上述在线解耦控制方法改善了解耦效果,且能更好地适应耦合被控对象工况点的变化。A method for online decoupling control based on LPV onboard model was put forward owing to the uncertainty of the aircraft powerplant operating point and the traditional static decoupling method cannot meet the change of the operating point.Based on the traditional PID control and feed-forward compensated decoupling,the onboard LPV model was further used to calculate system parameters that input decoupling compensator in real-time,then the relative gain criterion was used to judge the degree of coupling system at that operating point,and coupling system could obtain decoupling compensation at the corresponding operating point to achieve decoupling control.Taking the online decoupling of the dual-loop control system of a variable pitch electric power plant as an example,the simulation system was established to verify the feasibility and effectiveness of the online decoupling method.Simulation results show that the online decoupling control method improves the decoupling effect and better adapts to the change of the operating point of the coupled controlled object.

关 键 词：相对增益 前馈补偿器 比例积分微分控制 在线解耦控制 

分 类 号：V233.7[航空宇航科学与技术—航空宇航推进理论与工程]