Abstract
Conventional collaborative robots can solve complex problems through programming approaches. But the current tasks are different and nonrepetitive, many problems cannot be solved by conventional programming methods. Deep reinforcement learning provides a framework for solving robotic control tasks using machine learning techniques. However, the existing model-free deep reinforcement learning algorithms lack unified framework for comparing sample efficiency with final performance. In this paper, a hybrid deep reinforcement learning framework and its application in robot control are proposed based on the existing model-free deep reinforcement learning algorithms. In the acting process, the distributed actors acting with the environment are used to acquire the data, while prior actors are used to solve the cold boot problem of the algorithm. In the learning process, prioritized experience replay and multi-step learning are designed for the improvement on the final performance. Simulations are represented to show the practicality and potential of the proposed algorithm. Results show that the hybrid deep reinforcement learning algorithm in this paper has a significant improvement on the final performance and sample efficiency while it can ensure the stability and convergence.
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Acknowledgment
This research was supported, in part, by the National Natural Science Foundation of China (No. 51875393) and by the China Advance Research for Manned Space Project (No. 030601).
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Ma, C., Li, J., Bai, J., Wang, Y., Liu, B., Sun, J. (2019). A Hybrid Deep Reinforcement Learning Algorithm for Intelligent Manipulation. In: Yu, H., Liu, J., Liu, L., Ju, Z., Liu, Y., Zhou, D. (eds) Intelligent Robotics and Applications. ICIRA 2019. Lecture Notes in Computer Science(), vol 11743. Springer, Cham. https://doi.org/10.1007/978-3-030-27538-9_31
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