Serial and parallel reliability models for robot arm reliability analysis. (August 2020)

• Record Type: Journal Article
• Authors: Li, Songhao; Xu, Chen; Wang, Yawen; Xie, Liyang
• Is Part Of: Journal of physics. Volume 1605(2020)
• Publication Date: 2020-08
• Subjects: Physics -- Congresses; 530.5
• DOI: 10.1088/1742-6596/1605/1/012043
• Languages: English
• ISSNs: 1742-6588

Abstract

Abstract: For reliability evaluation of a robot arm designed for tunnel boring machine, a serial system reliability model for arm strength and a summation (cumulative deformation) system reliability model for the fingers of the robot arm are developed. To reflect the effect of load uncertainty, total probability theorem is applied to develop mult-layer, multi-variate reliability models. With the total probability theorem and the multi-layer configuration of the reliability models, such models reflect the effect of load intensity uncertainty, load action number uncertainty, load peak distribution uncertainty, and component strength uncertainty hierarchically.