期刊
ISA TRANSACTIONS
卷 57, 期 -, 页码 10-22出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.isatra.2015.02.013
关键词
Integrated guidance and control (IGC); Reduced-order extended state observer (ESO); Model-assisted active disturbance rejection control (ADRC); Nonlinear tracking differentiator; Maneuvering target; Enhanced interception performance; Multiple uncertainties
资金
- National Natural Science Foundation of China [61175084/F030601]
- Program for Changjiang Scholars and Innovative Research Team in University [IRT 13004]
- Aeronautical Science Foundation of China [2014ZA51002]
This paper proposes a novel composite integrated guidance and control (IGC) law for missile intercepting against unknown maneuvering target with multiple uncertainties and control constraint. First, by using back-stepping technique, the proposed IGC law design is separated into guidance loop and control loop. The unknown target maneuvers and variations of aerodynamics parameters in guidance and control loop are viewed as uncertainties, which are estimated and compensated by designed model-assisted reduced-order extended state observer (ESO). Second, based on the principle of active disturbance rejection control (ADRC), enhanced feedback linearization (FL) based control law is implemented for the IGC model using the estimates generated by reduced-order ESO. In addition, performance analysis and comparisons between ESO and reduced-order ESO are examined. Nonlinear tracking differentiator is employed to construct the derivative of virtual control command in the control loop. Third, the closed-loop stability for the considered system is established. Finally, the effectiveness of the proposed IGC law in enhanced interception performance such as smooth interception course, improved robustness against multiple uncertainties as well as reduced control consumption during initial phase are demonstrated through simulations. (C) 2015 ISA. Published by Elsevier Ltd. All rights reserved.
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