入力制約付き真比例航法による迎撃時間制御
Bounded-Input True Proportional Navigation for Impact-Time Control
目標迎撃時間を制御する非線形誘導則を提案。制御入力の上限を明示的に考慮しつつ、真比例航法を基盤にスライディングモード制御で時間制約付き迎撃を実現する。
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著者: Lohitvel Gopikannan, Shashi Ranjan Kumar, Abhinav Sinha
分類: eess.SY, cs.RO, cs.SY, math.DS
原文アブストラクト
This paper proposes a nonlinear guidance strategy capable of intercepting a constant-velocity, non-maneuvering target while strictly satisfying the prescribed bounds on the control input (commanded acceleration). Unlike conventional strategies that estimate time-to-go using linearization or small-angle approximations, the proposed strategy employs true proportional-navigation guidance (TPNG) as a baseline, which utilizes an exact time-to-go formulation and is applicable over a wide range of target motions. In contrast to most existing strategies, which do not incorporate control input bounds into the guidance design, the proposed approach explicitly accounts for these limits by modeling the interceptor acceleration as a dynamic variable. Based on the sliding mode control technique, an effective guidance law that achieves time-constrained interception while accounting for bounded input is then derived. The performance of the proposed strategy is evaluated for various engagement scenarios.
