A semi-active damper in vertical secondary suspension for the comfort increase in passenger trains

Francesco Ripamonti; Andrea Chiarabaglio; Ferruccio Resta

doi:10.1117/12.2258225

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11 April 2017 A semi-active damper in vertical secondary suspension for the comfort increase in passenger trains

Francesco Ripamonti, Andrea Chiarabaglio, Ferruccio Resta

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Proceedings Volume 10164, Active and Passive Smart Structures and Integrated Systems 2017; 1016437 (2017) https://doi.org/10.1117/12.2258225
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2017, Portland, Oregon, United States

Abstract

Passive oil dampers for railway vehicles present a damping and stiffness characteristics, which depend from excitation history. This behaviour is not acceptable for many high-performance applications. A mechatronic approach, able to continuously adjust the damping coefficient according to the operation requirements, represents a very attractive and smart solution. In this paper, a control strategy for semi-active dampers of train vertical secondary suspensions is presented. The controller aims at assuring the maximum available damping at low frequencies, while at high frequencies minimizes the force transmitted to the carbody that excites the bending modes.

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Francesco Ripamonti, Andrea Chiarabaglio, and Ferruccio Resta "A semi-active damper in vertical secondary suspension for the comfort increase in passenger trains", Proc. SPIE 10164, Active and Passive Smart Structures and Integrated Systems 2017, 1016437 (11 April 2017); https://doi.org/10.1117/12.2258225

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