Robust Stochastic Observer-Based Attack-Tolerant Missile Guidance Control Design Under Malicious Actuator and Sensor Attacks

Bor-Sen Chen,Sheng-Yen Hsu,Min-Yen Lee

doi:10.1109/access.2021.3101898

Bor-Sen Chen, Sheng-Yen Hsu + Show 1 more

Open Access

https://doi.org/10.1109/access.2021.3101898

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Journal: IEEE Access	Publication Date: Jan 1, 2021
Citations: 1	License type: CC BY 4.0

Affiliation: National Tsing Hua University, Yuan Ze University

Abstract

In this study, the robust H ∞ stochastic observer-based attack-tolerant guidance control strategy is designed for the nonlinear stochastic missile guidance control system under the external disturbance and measurement noise as well as actuator attack signal and sensor attack signal. To simplify the attack signal estimation, a novel nonsingular smoothed dynamic model is introduced to efficiently describe the actuator and sensor attack signals. Consequently, the state/attack signal estimation can be easily achieved by using conventional Luenberger observer. Next, to attenuate the effect of external disturbance, measurement noise and approximation errors of attack signal on the missile guidance control system, the robust H ∞ attack-tolerant guidance control performance is considered and the design condition is derived in terms of nonlinear Hamilton-Jacobi inequality (HJI) constrained problem. Since HJI cannot be easily solved analytically or numerically, the Takagi-Sugeno (T-S) fuzzy modelling method is utilized to facilitate the robust H ∞ attack-tolerant guidance control strategy design. Thereafter, the H ∞ observer-based attack-tolerant control design problem is transformed into linear matrix inequalities problem (LMIP) which can be solved very efficiently by using the convex optimization techniques. Simulation example, with the comparison between the proposed method and conventional robust missile guidance strategy, is given to illustrate the design procedures and validate the performance of the proposed method.

Highlights

W ITH the development of national military, missile guidance control to hit a target precisely becomes more and more important
The malicious interference signal emitted by the target on the sensor of tactical missile would be considered as sensor attack signal
In [36], an adaptive attack tolerant control strategy is used to achieve the formation tracking control of missile system and the effect of attack signal is passively attenuated by the proposed adaptive control strategy

Summary

INTRODUTCTION

W ITH the development of national military, missile guidance control to hit a target precisely becomes more and more important. It is highly desirable to apply advanced control techniques to develop an effective observer-based attack-tolerant control law to improve the engagement performance of tactical missiles under external disturbance, intrinsic stochastic fluctuation and actuator and sensor attack signals. A robust observer-based attack-tolerant guidance control design is proposed for tactical missile to precisely hit the target under malicious actuator and sensor attack signals as well as external disturbance. The fuzzy observer-based attack-tolerant guidance controllers are introduced to efficiently estimate system state and attack signal for guidance control of the stochastic nonlinear missile guidance system, which at the same time can eliminate the effects of external disturbance, approximation error of attack signals, and measurement noises on the estimation and guidance of the augmented guidance system below a prescribed attenuation level, so that a desired robust H∞ observer-based attacktolerant guidance control performance can be guaranteed. If their dimension are not defined, are assumed to be with appropriate dimension for algebraic operation

SYSTEM DESCRIPTION

PROBLEM FORMULATION

SIMULATION PARAMETER SETTING

CONCLUSION