Abstract
A high-speed electric multiple unit (HS-EMU) bearing test rig that simulates the working conditions of axle-box bearings is an important performance evaluation device. Because of heavy working loads at high speed, two problems have been commonly encountered in testing industrial HS-EMU axle-box bearings on a conventional test rig, which are highly unbalanced axial load on its support bearings and adverse clearance effects on test bearings. This paper presents a new HS-EMU bearing test-rig design with a relatively complete dynamic model for its analysis and a direct force control strategy to overcome these problems. In this strategy, a dual proportional–integral (PI) controller with a fuzzy logic selectable soft switch has been developed. The control strategy can be easily implemented on an industrial programmable logic controller as it relies only on measured force values and requires a small amount of calculation. The bearing test-rig controlled system has been experimentally evaluated against a conventional PI controller.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
