Journal
ISA TRANSACTIONS
Volume 102, Issue -, Pages 280-294Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.isatra.2020.02.017
Keywords
Reinforcement learning; Adaptive control; Policy gradient; Mobile robots; Multi-platforms
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Funding
- National Research and Technology Council of Argentina (CONICET)
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Intelligent control systems are being developed for the control of plants with complex dynamics. However, the simplicity of the PID (proportional-integrative-derivative) controller makes it still widely used in industrial applications and robotics. This paper proposes an intelligent control system based on a deep reinforcement learning approach for self-adaptive multiple PID controllers for mobile robots. The proposed hybrid control strategy uses an actor-critic structure and it only receives low-level dynamic information as input and simultaneously estimates the multiple parameters or gains of the PID controllers. The proposed approach was tested in several simulated environments and in a real time robotic platform showing the feasibility of the approach for the low-level control of mobile robots. From the simulation and experimental results, our proposed approach demonstrated that it can be of aid by providing with behavior that can compensate or even adapt to changes in the uncertain environments providing a model free unsupervised solution. Also, a comparative study against other adaptive methods for multiple PIDs tuning is presented, showing a successful performance of the approach. (C) 2020 ISA. Published by Elsevier Ltd. All rights reserved.
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