A Discrete Sliding-Mode Guidance Law

Author:

Zhou Di1,Sun Sheng2,Zhou Jing Yang3,Teo Kok Lay4

Affiliation:

1. Department of Control Science and Engineering, Harbin Institute of Technology, Mailbox 327, Harbin 150001, China e-mail:

2. Department of Control System Theory and Simulation, Beijing Aerospace Automatic Control Institute, Beijing 100854, China

3. Department of Construction Management, Curtin University, Perth 6102, Australia

4. Department of Mathematics and Statistics, Curtin University, Perth 6102, Australia

Abstract

Based on the discrete form of the target-missile relative motion equations in plane, a discrete sliding-mode guidance (DSMG) law is proposed. All previous missile seeker's measurements are used in the design of the DSMG law to estimate the target acceleration such that noises in the seeker's measurements are effectively being smoothened. It is proved that the proposed DSMG law is finite time convergent. Quasi sliding-mode bands of the DSMG law are discussed, and the formula for calculating the terminal miss distances of the missile under the DSMG law are presented. Simulation results from a space interception process verify the effectiveness of the proposed method.

Publisher

ASME International

Subject

Computer Science Applications,Mechanical Engineering,Instrumentation,Information Systems,Control and Systems Engineering

Reference14 articles.

1. Discrete Optimal Terminal Control With Application to Missile Guidance;IEEE Trans. Autom. Control,1973

2. Discrete Optimal Guidance for High-Order Missile and Maneuvering Target;IEEE Trans. Aerosp. Electron. Syst.,1991

3. Discrete-Time Optimal Guidance;J. Guid. Control Dyn.,1999

4. Optimal Guidance Laws With Uncertain Time-of-Flight;IEEE Trans. Aerosp. Electron. Syst.,2000

5. Multiple Model-Based Terminal Guidance Law;J. Guid. Control Dyn.,2000

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