Bridging Reinforcement Learning and Optimal Control via Feasible Action Mapping
On the map: Deep reinforcement learning methods → Safe and constrained RL
Abstract (arXiv)
Operating constrained dynamical systems requires controllers to efficiently solve complex tasks while enforcing recursive feasibility and physical constraints. To address these competing requirements, we present Feasible Action for Optimal Control (FAOC), a novel control framework integrating Reinforcement Learning (RL) and Optimal Control (OC). The core contribution is a computationally efficient, optimization-based mapping algorithm that transforms the RL agent's action from a static abstract set into a state-dependent feasible parameter set of the Optimal Control Problem (OCP), guaranteeing instantaneous parameter feasibility. When paired with invariant terminal sets, FAOC guarantees strict recursive feasibility and safe operation, effectively combining the predictable safety of OC with the behavioral flexibility of RL. Unlike prior work, the abstract action space does not require expert tuning, nor is the OCP formulation compromised by the inability of RL to guarantee feasibility. We evaluate FAOC on real-time motion planning for robot table tennis, where simulated experiments demonstrate superior sample efficiency and closed-loop performance compared to state-of-the-art baselines. We open-source the used implementation of the mapping algorithm and OCP for motion planning https://github.com/SonyResearch/feasible_action_for_optimal_control.
Key facts. No citing papers in the map yet (data through 14 Oct 2026). Placed in Safe and constrained RL, one of 15 directions in Deep reinforcement learning methods. Builds on 25 of its 50 references that are in the map. First posted on arXiv 27 Jul 2026.
Builds on
25 of 50 references.
References · 25
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13 more
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- 2025Synthesis of Model Predictive Control and Reinforcement Learning: Survey and Classificationcited by 26
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- 2026A Decade of Bayesian Optimization for Controller Tuning and Robot Learning: Tutorial, Review, and Future Prospects
- 2025A Review of Learning-Based Motion Planning: Toward a Data-Driven Optimal Control Approach
- 2024Bridging the gap between Learning-to-plan, Motion Primitives and Safe Reinforcement Learning
- 2025Taxonomy and Trends in Reinforcement Learning for Robotics and Control Systems: A Structured Review
- 2026Foundations of Reinforcement Learning and Control:Connections and New Perspectives
- 2024The Feasibility Theory of Constrained Reinforcement Learning: A Tutorial Study
- 2026From Kinematics to Dynamics: Learning to Refine Hybrid Plans for Physically Feasible Execution
- 2026Model-Based Diffusion Optimal Control for Multi-Robot Motion Planning