Proportional-derivative Control of Second-order Tethered Satellites System Based on Extended State Observer and Feed-forward Compensation  

作　　者：Bowen Su Fan Zhang Panfeng Huang 

机构地区：[1]Research Center for Intelligent Robotics School of Astronautics Northwestern Polytechnical University Xi'an,P.R.China [2]National Key Laboratory of Aerospace Flight Dynamics Northwestern Polytechnical University Xi'an,P.R.China

出　　处：《Guidance, Navigation and Control》2023年第3期65-88,共24页制导、导航与控制（英文）

基　　金：supported by the National Natural Science Foundation of China under Grant Nos.91848205,62222313,and 62173275.

摘　　要：This paper researches the proportional-derivative(PD)feedback control with feed-forward compensations from input for a triangular tethered satellite system(TTSS),and the extended state observer(ESO)design which is further incorporated in control to estimate the structural uncertainties in system.By expanding Lagrangian equations under chosen variables,the dynamic equations of TTSS are derived which is the second-order nonlinear equation.Then the feedback control under typical feed-forward compensations is discussed as the nonlinear functions in system are counteracted,and the controlled outputs are computed by deriving the transfer functions of the transformed structures.Moreover,in case of the uncertain structures in system which may constrain the control e®ect,ESO-based PD control is further proposed,and the observed error and controlled accuracy are analyzed by Lyapunov functions.Simulation results on the designed controls are presented to validate the theoretic analyses.

关 键 词：PD control extended state observer feed-forward compensation transfer function tethered formation 

分 类 号：O17[理学—数学]