基于伪谱法的翼伞系统归航轨迹容错设计-控制理论与应用.PDF

30 6 Vol. 30 No. 6 2013 6 Control Theory Applications Jun. 2013 DOI: 10.7641/CTA.2013.20956 , , , , , (1. , 300071; 2. , 441022) : , , , Gauss. , , ; , Gauss, . , , , . : Gauss; ; ; ; : V445.2+3, TP13 : A Fault-tolerance design of homing trajectory for parafoil system based on pseudo-spectral method GAO Hai-tao , ZHANG Li-min , SUN Qing-lin , SUN Ming-wei , CHEN Zeng-qiang , KANG Xiao-feng (1. College of Information Technical Science, Nankai University, Tianjin 300071, China; 2. Military Representative Office, Aerospace Industries Ltd, Xiangyang Hubei 441022, China) Abstract: Since faults in the control motor change control characteristics, the parafoil system in the homing process cannot reach the target point in the original planned trajectory. To deal with this problem, we propose a fault-tolerance design for the homing trajectory by using the Gauss pseudo-spectral method. According to the control characteristic of the parafoil system, we build a normal model and a faulty model with one faulty motor. The constraint conditions and objective functions are respectively defined for the two models, in terms of the parafoil parameters. Using the Gauss pseudo-spectral method, we solve the optimal trajectory programming problem for the two models. The optimal flight trajectories of the parafoil system under different conditions are also obtained. Simulation results show that the parafoil system can reach the ta