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Journal of Automotive Safety and Energy ›› 2023, Vol. 14 ›› Issue (2): 202-211.DOI: 10.3969/j.issn.1674-8484.2023.02.007

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Global path planning strategy based on an improved deep reinforcement learning

HAN Ling(), ZHANG Hui, FANG Ruoyu, LIU Guopeng, ZHU Changsheng, CHI Ruifeng   

  1. College of Mechanical and Electrical Engineering, Changchun University of Technology, Changchun 130012, China
  • Received:2022-09-14 Revised:2022-11-21 Online:2023-04-30 Published:2023-04-27

Abstract:

A Suppresses Q Deep Q Network (SQDQN) algorithm was proposed based on traditional deep reinforcement learning (DRL), with being established a global path planning strategy, to solve the problem of model over-dependence and overestimation. The SQDQN algorithm combined the Deep Q Network (DQN) algorithm with information entropy to suppress overestimation; Evaluated the update process in real time, with the help of information entropy, to suppress the over-estimation of the damage performances of the DQN strategy. An environmental model to obtain the global path planning strategy was established with the help of the interaction between the SQDQN algorithm and the environment model. The results show that the SQDQN algorithm selects three better strategies from 20 experiments compared with the DQN strategy. And reduces the route planning travel time by 11.32% than that by the Dijkstra's traditional route planning method. The global path planning strategy of this paper reduces the output error caused by DQN's over expectation of actions.

Key words: intelligent transportation, path planning, deep reinforcement learning (DRL), information entropy, suppress overestimation

CLC Number: