離散時間制御密度関数を用いた安全クリティカルモデル予測制御
Safety Critical Model Predictive Control Using Discrete-Time Control Density Functions
制御密度関数をモデル予測制御に統合し、非線形システムの安全性と収束性を両立するMPC-CDFを提案。水中ロボットの障害物回避で有効性を示した。
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著者: Sriram S. K. S. Narayanan, Sajad Ahmadi, Javad Mohammadpour Velni, Umesh Vaidya
分類: eess.SY, cs.RO, cs.SY
原文アブストラクト
This paper presents MPC-CDF, a new approach integrating control density functions (CDFs) within a model predictive control (MPC) framework to ensure safety-critical control in nonlinear dynamical systems. By using the dual formulation of the navigation problem, we incorporate CDFs into the MPC framework, ensuring both convergence and safety in a discrete-time setting. These density functions are endowed with a physical interpretation, where the associated measure signifies the occupancy of system trajectories. Leveraging this occupancy-based perspective, we synthesize safety-critical controllers using the proposed MPC-CDF framework. We illustrate the safety properties of this framework using a unicycle model and compare it with a control barrier function-based method. The efficacy of this approach is demonstrated in the autonomous safe navigation of an underwater vehicle, which avoids complex and arbitrary obstacles while achieving the desired level of safety.
