An investigation into the aircraft flight simulation and control system is presented in this paper. The study was firstly focused on the establishment of an integrated hardware-in-the-loop（HITL） platform for aircraf...An investigation into the aircraft flight simulation and control system is presented in this paper. The study was firstly focused on the establishment of an integrated hardware-in-the-loop（HITL） platform for aircraft flight simulation based on MATLAB/Simulink ＋ dSPACE. The platform combines the abundant software and hardware resources of dSPACE simulation platform to simulate the flight attitude of an aircraft in six-DOF （ degree of freedom） motion. Based on the platform, the study was then focused on the flight numerical simulation by taking a loitering aerial vehicle as an example. An aircraft mathematical model was created for a modular design and off-line numerical simulation based on MATLAB/Simulink. Finally, the study was focused on the control system design of the loitering aerial vehicle and conduct of an HITL simulation experiment for the vehicle pitch control. The experiment verifies the system design and control effectiveness. Research results show that the dSPACE simulation system provides a real time good experimental platform to improve the efficiency of study and development of a flight control system.展开更多
独立轮对作为低地板列车的关键组成部分,其结构导致其导向性能缺失、磨损和噪声等问题,这些问题成为制约低地板列车发展的主要因素。文章通过已有的独立轮对单轴转向架滚动试验台,结合dSPACE系统搭建了快速控制原型(Rapid Control Proto...独立轮对作为低地板列车的关键组成部分,其结构导致其导向性能缺失、磨损和噪声等问题,这些问题成为制约低地板列车发展的主要因素。文章通过已有的独立轮对单轴转向架滚动试验台,结合dSPACE系统搭建了快速控制原型(Rapid Control Prototype,RCP)测试平台,并提出了2种主动导向控制策略,分别开展了独立轮对导向性能验证、Simulink和SIMPACK联合仿真验证,以及主动导向控制策略的半实物仿真台架试验。试验结果表明,独立轮对本身不具备曲线对中能力,当添加主动导向控制后独立轮对能完全无横向偏移。文章所提出的2种主动导向控制策略均能够使采用独立轮对的车辆获得良好的曲线通过性能,在补偿车辆速度和曲线半径的情况下,独立轮对横移量能高效地回复至中心线位置。展开更多
为解决弯扭耦合复合材料薄壁叶片的发散不稳定问题,阐述了风力机叶片准稳态响应及基于回路传输恢复的LQG(LQG with Loop Transfer Recovery,LLTR)理论控制过程。叶片结构模型是基于周向反对称刚度铺层的复合材料薄壁单闭室翼型;翼型的...为解决弯扭耦合复合材料薄壁叶片的发散不稳定问题,阐述了风力机叶片准稳态响应及基于回路传输恢复的LQG(LQG with Loop Transfer Recovery,LLTR)理论控制过程。叶片结构模型是基于周向反对称刚度铺层的复合材料薄壁单闭室翼型;翼型的中线轨迹是S809Ⅱ翼型型线。从直升机叶片的失速气动力模型中提取了一种准稳态气动力模型,经过修正后适合于风力机叶片经典颤振和失速颤振临界状态的研究。分别详细研究了基于输入端回路传输恢复及输出端回路传输恢复两种情况下的LLTR控制,并通过弯扭时域响应和控制器响应的数字仿真比较以及奇异值伯德图曲线对比,论证了LLTR控制算法的稳定性及在颤振抑制方面的优越性。控制算法的实时效应也通过半实物仿真实验平台得到了检验。展开更多
基金Sponsored by the Ministerial Level Advanced Research Foundation(A26020060253)
文摘An investigation into the aircraft flight simulation and control system is presented in this paper. The study was firstly focused on the establishment of an integrated hardware-in-the-loop（HITL） platform for aircraft flight simulation based on MATLAB/Simulink ＋ dSPACE. The platform combines the abundant software and hardware resources of dSPACE simulation platform to simulate the flight attitude of an aircraft in six-DOF （ degree of freedom） motion. Based on the platform, the study was then focused on the flight numerical simulation by taking a loitering aerial vehicle as an example. An aircraft mathematical model was created for a modular design and off-line numerical simulation based on MATLAB/Simulink. Finally, the study was focused on the control system design of the loitering aerial vehicle and conduct of an HITL simulation experiment for the vehicle pitch control. The experiment verifies the system design and control effectiveness. Research results show that the dSPACE simulation system provides a real time good experimental platform to improve the efficiency of study and development of a flight control system.
文摘独立轮对作为低地板列车的关键组成部分,其结构导致其导向性能缺失、磨损和噪声等问题,这些问题成为制约低地板列车发展的主要因素。文章通过已有的独立轮对单轴转向架滚动试验台,结合dSPACE系统搭建了快速控制原型(Rapid Control Prototype,RCP)测试平台,并提出了2种主动导向控制策略,分别开展了独立轮对导向性能验证、Simulink和SIMPACK联合仿真验证,以及主动导向控制策略的半实物仿真台架试验。试验结果表明,独立轮对本身不具备曲线对中能力,当添加主动导向控制后独立轮对能完全无横向偏移。文章所提出的2种主动导向控制策略均能够使采用独立轮对的车辆获得良好的曲线通过性能,在补偿车辆速度和曲线半径的情况下,独立轮对横移量能高效地回复至中心线位置。
文摘为解决弯扭耦合复合材料薄壁叶片的发散不稳定问题,阐述了风力机叶片准稳态响应及基于回路传输恢复的LQG(LQG with Loop Transfer Recovery,LLTR)理论控制过程。叶片结构模型是基于周向反对称刚度铺层的复合材料薄壁单闭室翼型;翼型的中线轨迹是S809Ⅱ翼型型线。从直升机叶片的失速气动力模型中提取了一种准稳态气动力模型,经过修正后适合于风力机叶片经典颤振和失速颤振临界状态的研究。分别详细研究了基于输入端回路传输恢复及输出端回路传输恢复两种情况下的LLTR控制,并通过弯扭时域响应和控制器响应的数字仿真比较以及奇异值伯德图曲线对比,论证了LLTR控制算法的稳定性及在颤振抑制方面的优越性。控制算法的实时效应也通过半实物仿真实验平台得到了检验。
