Systems Engineering and Electronics ›› 2023, Vol. 45 ›› Issue (8): 2643-2650.doi: 10.12305/j.issn.1001-506X.2023.08.40

• Reliability • Previous Articles    

Reliability analysis of industrial robot driver combining MRGP and PSO

Ying ZENG1,2, Yanfeng LI1,2,*, Hongyi WANG1,2, Huaming QIAN2,3, Hongzhong HUANG1,2   

  1. 1. School of Mechanical and Electrical Engineering, University of Electronic Science and Technology of China, Chengdu 611731, China
    2. Center for System Reliability and Safety, University of Electronic Science and Technology of China, Chengdu 611731, China
    3. State Key Laboratory of Mechanical Transmission, Chongqing University, Chongqing 400044, China
  • Received:2023-02-15 Online:2023-07-25 Published:2023-08-03
  • Contact: Yanfeng LI

Abstract:

As one of the core components of the industrial robot, the failure of the driver is frequent, and the failure modes are various and have certain correlation, which brings severe challenges to the reliable operation of the industrial robot. Simultaneously, the limit state function of each failure mode in the industrial robot driver is very complex and even implicit, which further makes the reliability modeling of the industrial robot driver difficult. To solve this problem, multiple response Gaussian process (MRGP) model is introduced to describe the correlation and limit state function of each failure mode in the driver. Further, particle swarm optimization (PSO) algorithm is introduced to optimize the hyperparameters in the MRGP model. Besides, combined with the active learning strategy, the MRGP model is updated and iterated until it met certain accuracy conditions, and a reliability analysis method of industrial robot driver based on MRGP-PSO is proposed. Finally, relevant case studies are conducted, and the validity of the method is also verified.

Key words: industrial robot, driver, multiple response Gaussian process (MRGP), particle swarm optimization (PSO) algorithm, reliability analysis

CLC Number: 

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