TY -的A2马诺莫尼Maj d盟盛,y。AU - Jiang, W. A. N. G. AU - Pei, Pei AU - Yongjia, Zhou PY - 2020 DA - 2020/08/05 TI - Discrete-Time Angle Constraint Interception with Model-Assisted Target Maneuver Estimator SP - 1764510 VL - 2020 AB - This paper investigates the problem of designing angle constraint guidance law against unknown maneuvering targets based on discrete-time sliding mode control theory. Invoking the fact that the future course of action of the target, an independent entity, cannot be predicted beforehand due to its complexity and unpredictability, a model-assisted discrete-time disturbance observer in cooperation with a singularity-free strategy is proposed first to estimate the target maneuver. Based on the reconstructed signal and a fast convergence time-varying sliding surface, a new chattering-mitigated super-twisting-like discrete-time impact angle constraint guidance law is then synthesized. Stability analysis shows that the closed-loop system trajectory can be forced to enter into a small region around the sliding surface. Simulations and comparisons with classical discrete-time sliding mode guidance law validate the effectiveness of the proposed guidance law. SN - 1687-5966 UR - https://doi.org/10.1155/2020/1764510 DO - 10.1155/2020/1764510 JF - International Journal of Aerospace Engineering PB - Hindawi KW - ER -