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Robust entry guidance using multi-segment linear pseudospectral model predictive control

Journal of systems Engineering and electronics 2017年第1期28卷 103-125页

作者： Liang Yang Wanchun Chen Xiaoming Liu Hao Zhou School of Astronautics Beihang UniversityBeijing 100191China

This paper presents a robust entry guidance algorithm for the high lift-to-drag ratio entry vehicle that employs the recently developed pseudospectral model predict control in a segmented manner. Here, the guidance commands are the longitudinal lift-to-drag (L/D) and bank reversal commands, which are calculated by successively solving multiple segment linear algebraic equations. These equations are derived using the linear pseudospectral method, control parametrization and calculus of variations. The method uses orthogonal polynomials and computes the updates through a series of analytical formulae, which makes it accurate and computationally effective. Moreover, it is able to adjust the number of bank reversals by providing the precise bank reversal point so as to fully exploit the potential of lateral maneuver. The method also employs proportional navigation and polynomial guidance after the last bank reversal to meet multiple terminal constraints. High-fidelity numerical simulations with various destinations are carried out to demonstrate its applicability. Furthermore, Monte Carlo simulations are also conducted to show that the proposed algorithm consistently offers very stable and robust performances and has superior performances in computational efficiency, guidance accuracy and lateral trajectory shaping capability in comparison with other typical methods. ? 1990-2011 Beijing Institute of Aerospace Information.

关键词： Calculations Computational efficiency Drag electronic guidance systems Intelligent systems Lift drag ratio Linear algebra Linear equations Monte Carlo methods

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Output-feedback based partial integrated missile guidance and control law design

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Journal of systems Engineering and electronics 2016年第6期27卷 1238-1248页

作者： Xuejiao Sun Rui Zhou Delong Hou School of Automation Science and Electrical Engineering Beihang UniversityBeijing 100191China Beijing Institute of electronic System Engineering Beijing 100854China

An output-feedback based partial integrated guidance and control (IGC) law for missile interceptor is proposed with the smooth finite time convergence property. Firstly, a novel outputfeedback based smooth sliding mode control is proposed for a class of nonlinear systems in the presence of immeasurable state and disturbance. The finite time convergence property of this control scheme is proved based on the Lyapunov stability and homogeneous principle. Then, the proposed control method is applied to the design of partial IGC law. A kind of scaling methods is also developed to reach the rapid convergence of the system. An important dominance of this control scheme is the smooth characteristic, which may result in chattering free convergence. The simulation results indicate the high precision and smooth elevator deflection of the proposed output feedback base partial IGC law. ? 2016 Beijing Institute of Aerospace Information.

关键词： Control system synthesis Control theory electronic guidance systems Guided missiles Missiles Sliding mode control

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Study on Federated Architecture for GPS/INS/TRN Integrated Navigation System

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Journal of systems Engineering and electronics 2000年第1期11卷 75-80页

作者： Wang, Yufei Huang, Xianlin Hu, Hengzhang Harbin Inst of Technology Harbin China

Based on the information fusion theory, a kind of integrated navigation system integration for cruise missile is presented in this paper. Besides, the way with which the system is integrated and the related data fusion technique are discussed. Information-fusion-based hybrid navigation system integration can fully utilize information provided by all kinds of navigation sensor subsystem and can improve the precision of the system effectively. Simultaneously, the reconstructing ability ensures the system of great reliability.

关键词： Control system synthesis electronic guidance systems Fault tolerant computer systems Global positioning system Sensor data fusion

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