Influence of roll-pitch seeker DRR and parasitic loop on Lyapunov stability of guidance system  

作　　者：LI Yue WEN Xianghua LI Wei WEI Lan XIA Qunli 

机构地区：[1]School of Aerospace Engineering,Beijing Institute of Technology,Beijing 100081,China [2]No.5718 Factory,Chinese People’s Liberation Army,Guilin 541002,China

出　　处：《Journal of Systems Engineering and Electronics》2021年第6期1509-1526,共18页系统工程与电子技术（英文版）

基　　金：supported by the Defense Science and Technology Key Laboratory Fund of Luoyang Electro-optical Equipment Institute,Aviation Industry Corporation of China(6142504200108)。

摘　　要：This paper focuses on the influence of the disturbance rejection rate(DRR)and parasitic loop parameters on the stability domain of the roll-pitch seeker's guidance system.The DRR models of the roll-pitch seeker caused by different types of disturbance torques and the scale deviation of different sensors are established.The optimal DRR model of the roll-pitch seeker,which contains the scale deviation model,is proposed by formula derivation.The model of the roll-pitch seeker's guidance system is established and equivalently simplified by the dimensionless method.The Lyapunov stability criterion for stability analysis of the guidance system is given by means of the passivity theorem and related definitions and lemmas.A simplified model of the roll-pitch seeker's guidance system,which is suitable for the Lyapunov stability criterion,is established by formula derivation and equivalent transformation.Three conditions that satisfy the Lyapunov stability criterion are obtained.Mathematical simulation with Nyquist plots is used to analyze the influence of different DRR parameters on the stability domain of the roll-pitch seeker's guidance system.Simulation results of this paper can provide reference for the stability analysis of systems related to the roll-pitch seeker.

关 键 词：roll-pitch seeker guidance system disturbance rejection rate(DRR) parasitic loop Lyapunov stability Nyquist analysis 

分 类 号：TJ765.331[兵器科学与技术—武器系统与运用工程]