Tracking Guidance Strategy for Low-thrust Transfer Trajectory Based on NMPC Theory
A tracking guidance scheme based on nonlinear model predictive control is proposed for low-thrust transfer trajectory.According to the optimal nominal transfer trajectory,the NMPC is used to design the predictive model of perturbed orbit.Performance index of receding optimization is established,which can indicate the difference between the nominal trajectory and prediction trajectory.Taking the orbit state of nominal transfer trajectory as the initial value,the optimal control sequence is solved by the sequential quadratic programming algorithm.Meanwhile,in order to eliminate the predictive model error,the accuracy of the next control sequence is improved by the introduction of feedback compensation.Taking earth-mars low-thrust transfer as an example,numerical simulation is used to verify the efficiency of the proposed method.
low-thrust tracking guidance nonlinear model predictive control numerical simulation
SHANG Hai-bin WANG Shuai JIN Ting HUANG Xiang-yu
Key Laboratory of Dynamics and Control of Flight Vehicle,Ministry of Education,School of Aerospace E Science and Technology on Space Intelligent Control Laboratory,Beijing 100190,China
国际会议
长沙
英文
1299-1304
2014-05-31（万方平台首次上网日期，不代表论文的发表时间）