A linear/nonlinear hybrid differentiator and application for DSGC system

Author

Sun Bao-cai ; Fan Jun-fang

Author_Institution

Res. Inst. on Gen. Dev. & Evaluation of Equip., AFEA, Beijing, China

fYear

2013

Firstpage

5172

Lastpage

5176

Abstract

A hybrid differentiator based on linear and nonlinear parts is introduced. A deeply strapdown guidance and control (DSGC) system for low-cost munitions is presented using body-fixed seeker and miniature inertial measurement unit (MIMU). The three-dimension line-of-sight (LOS) dynamics for guidance command are described using the missile-target geometry. Due to the weakness of strapdown seeker, the aforementioned hybrid differentiator is then introduced to obtain and filter the inertial LOS rate for proportional guidance law. The analysis and trajectory simulation results verify the performance of the proposed algorithm.

Keywords

inertial systems; measurement systems; missile guidance; nonlinear control systems; variable structure systems; 3D LOS dynamics; DSGC system; MIMU; body fixed seeker; deeply strapdown guidance and control; guidance command; inertial LOS rate; line of sight; miniature inertial measurement unit; missile target geometry; nonlinear hybrid differentiator; proportional guidance law; strapdown seeker; Detectors; Gravity; Heuristic algorithms; Missiles; Trajectory; Hybrid differentiator; LOS dynamics; Proportional guidance law; Strapdown guidance;

fLanguage

English

Publisher

ieee

Conference_Titel

Control Conference (CCC), 2013 32nd Chinese

Conference_Location

Xi´an

Type

conf

Filename

6640338