Reliability Analysis for Parallel-Serial Robots in Automotive Assembly Plant: A Case Study

Abstract:

Robot arrangement in the automotive assembly plant in manufacturing environment consists of series and parallel configurations. Robot subsystems at painting lines were configured in series configuration while overall system was configured in parallel. Interruption of operations due to breakdown at both subsystems during operation would affect the production throughput. The robots’ breakdown data for each subsystem were acquired for reliability analysis of parallel-serial configuration of robots. This study is to analyze the serial subsystems robot reliability compared to reliability of robots in overall system in parallel-serial configuration. The seven years actual breakdown data were acquired from the automotive painting plant. By using the reliability block diagram (RBD) method, at the 5000 operating hours, the two subsystems at the painting lines were evaluated. Reliability of the two subsystems are 0.029 and 0.119 respectively. While the overall parallel-serial system has the reliability of 0.145. It is proven that the parallel-serial reliability of the system is better compared to series configuration of the subsystems. With parallel-serial system, the production line would not be interrupted during the corrective or preventive maintenance worked.

• Periodical: Applied Mechanics and Materials (Volumes 799-800)
• Pages: 1035-1039
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.799-800.1035
• Online since: October 2015
• Authors: Ahmad Fauzi Fudzin*, Mohd Amin Abd Majid
• Keywords: Failures Rate, Parallel-Serial Configuration, Reliability, Reliability Block Diagram

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