A lateral/directional state-space model of the Raptor 50 helicopter is identified in forward flight condition. A frequency sweep test is properly designed and executed to collect a well-suited time-history database. The measured accelerometers are transferred from the sensor location to the gravity,...
3.Study on Vehicle Lateral Stability Model Based on Matlab基于Matlab的汽车横向稳定性模型 4.Lateral stability analysis of tractor-semitrailer under idle running condition惰行工况下汽车列车横向稳定性分析 5.Transversal Stability and Transversal Seismic Resistance of Large Span CFST Arch Bridge;大跨度钢管混...
Design goals are posed in terms of maintaining acceptable flying qualities during high alpha maneuvering while also achieving robustness to model parameter variations and unmodeled dynamics over the entire flight envelope. The need for gain scheduling is eliminated by using an inner loop dynamic ...
The control law is developed directly from the nonlinear aircraft model. Numerical simulation results are presented to show the closed-loop system behavior. 关键词: aircraft closed loop systems control system synthesis nonlinear control systems power control ailerons closed-loop system behavior control ...
Comparison between directional stability as measured in flight and rotor-off model tests in a wind tunnel shows qualitative agreement and, hence, indicates such wind-tunnel test, despite the absence of the rotors, to be one effective method of studying means of improving the directional stability ...
First, a lateral-direction mathematical model of a full-wing configuration UAV with twin propellers is established, and its lateral-direction flying qualities are analyzed. Then, based on active disturbance rejection control (ADRC) and NDI theories, a full-wing UAV lateral attitude control law is ...
Robust Control of a Reusable Launch Vehicle in Reentry Phase Using Model Following Neuro-Adaptive Design Google Scholar [6] 陈 海兵, 张 曙光, 方 振平. 加速度反馈的隐式动态逆鲁棒非线性控制律设计. 航空学报 , 2009 , 30(4): 597 -603 CrossRef Google Scholar [7] 王 霄婷, 周 ...
A linear fractional model of the lateral dynamics is constructed based on four linearized models that correspond to 2,6,10.5, and 14 degrees angle-of-attack. The resulting LFT controller performs well when implemented in a Simulink nonlinear simulation of the F-14 aircraft 展开 ...
Structured singular value synthesis is used to design an implicit model following outer loop controller that addresses flying qualities performance specifications. A control selector is designed that generates lateral/directional aerodynamic and thrust vectoring commands from generalized control inputs of roll...
In this paper, the damaged aircraft model is constructed, and differential thrust is proposed to be utilized as a control input to act as a "virtual" rudder to help stabilize the damaged aircraft. The H_鈭 loop shaping approach based robust control system design is then implemented to ...