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- W2790972108 abstract "Learning-based approaches are suitable for the control of systems with unknown dynamics. However, learning from scratch involves many trials with exploratory actions until a good control policy is discovered. Real robots usually cannot withstand the exploratory actions and suffer damage. This problem can be circumvented by combining learning with a model-based control. In this letter, we employ a nominal model-predictive controller that is impeded by the presence of an unknown model-plant mismatch. To compensate for the mismatch, we propose two approaches of combining reinforcement learning with the nominal controller. The first approach learns a compensatory control action that minimizes the same performance measure as is minimized by the nominal controller. The second approach learns a compensatory signal from a difference of a transition predicted by the internal model and an actual transition. We compare the approaches on a robot attached to the ground and performing a setpoint reaching task in simulations. We implement the better approach on the real robot and demonstrate successful learning results." @default.
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- W2790972108 date "2018-07-01" @default.
- W2790972108 modified "2023-10-12" @default.
- W2790972108 title "Model-Plant Mismatch Compensation Using Reinforcement Learning" @default.
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- W2790972108 doi "https://doi.org/10.1109/lra.2018.2800106" @default.
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