Research on Integrated Guidance and Control of Distributed Cooperation of Multi-Interceptor with State Coupling

Xiang Liu,Xiaogeng Liang

doi:10.1155/2018/3193405

Abstract

With the aim of achieving cooperative target interception by using multi-interceptor, a distributed cooperative control algorithm of the multi-interceptor with state coupling is proposed based on the IGC (integrated guidance and control) method. Considering the coupling relationship between the pitch and ya w channels, a state coupling “leader” IGC model is established, an FTDO (finite-time disturbance observer) is designed for estimating the unknown interference of the model, and the “leader” controller is designed according to the adaptive dynamic surface sliding-mode control law. Secondly, the cooperative control strategy of the multi-interceptor is designed with the “leader-follower” distributed network mode to obtain the speed in the three directions of the interceptor in air and transform them to the general flight speed, trajectory inclination angle, and trajectory deflection instruction by using the transformational relation of kinematics. Finally, the “follower” controller is designed with the FTDO and dynamic surface sliding-mode control. The designed multi-interceptor distributed cooperative IGC algorithm with state coupling has good stability according to the simulation results of two different communication topologies.

Highlights

With the rapid development of antimissile technology, it is getting difficult for a single interceptor to break through the defense and intercept targets efficiently, making it hard for an interceptor to adapt to the demands of future battlefield scenarios
Because the interceptor integrated guidance and control (IGC) model is an unmatched and uncertain system, and aiming at the state coupling IGC model (4) and FTDO estimated value (10)–(12), the “leader” control algorithm is designed by taking advantage of the adaptive dynamic sliding-mode control law
If the convergence rate is calculated using (25), the disturbance values of the system (see (4)) are estimated using (10)-(12), and filter equations (16) and (21) are implemented; under the dynamic surface sliding-mode control law (see (26)), imposing the constraint for ensuring the system (see (4)) output error converging into the adjacent area of the origin, an arbitrary adjacent area of the origin can be obtained with the appropriate design parameter determined

Summary

Introduction

With the rapid development of antimissile technology, it is getting difficult for a single interceptor to break through the defense and intercept targets efficiently, making it hard for an interceptor to adapt to the demands of future battlefield scenarios. The design of the “leader” and “follower” control algorithm using the dynamic surface sliding-mode and finitetime disturbance observer can effectively enhance the stability of the interceptor during the flight and ensure the target to be hit by the “leader” and “follower” simultaneously following the distributed cooperative controlling strategy. Because the interceptor IGC model is an unmatched and uncertain system, and aiming at the state coupling IGC model (4) and FTDO estimated value (10)–(12), the “leader” control algorithm is designed by taking advantage of the adaptive dynamic sliding-mode control law. According to (24) and (25) and estimated FTDO d3 of (12), the adaptive dynamic surface sliding-mode control law of the interceptor “leader” is given by u g3−1.

Stability Analysis

Distributed Network Synchronization Strategy

Simulation Verification

Conclusions