Multi-objective reliability design optimization of electric multiple unit pantograph geometric parameters

Abstract

In order to reduce the design variable fluctuations in the multi-objective optimization of the pantograph geometric parameters of electric multiple units, a multi-objective reliability design optimization method was proposed based on the dual response surface method in this article. The corresponding model of the pantograph was built by integrating the dual response surface method, the reliability indexes, and fuzzy preference method. Considering different working conditions and reliability index, the reliability optimal design target was realized by optimizing the established model. A case was studied to verify the feasibility and effectiveness of the proposed method.

Pantograph-catenary contact reliability analysis under crosswind

“…At present, some achievements that the influence of rod size uncertainty and wear of moving pairs on the pantograph motion reliability have been obtained. Cao et al (2020), Chen et al (2016) and Wang and Zou (2019) analyze the influence of both uncertain factors on the pantograph motion reliability, and optimize the design parameters of it to ensure its motion reliability in the process of pantograph rising. However, the whole life cycle of pantograph is in the state of pantograph-catenary contact operation most of the time, and the process of pantograph rising accounts only for a small part.…”