New insights from fractional order skyhook damping control for railway vehicles

Zolotas, Argyrios C. and Goodall, Roger M. (2018) New insights from fractional order skyhook damping control for railway vehicles. Vehicle System Dynamics . ISSN 0042-3114

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new insights from fractional order skyhook damping control for railway vehicles
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Item Type:Article
Item Status:Live Archive

Abstract

Active suspensions for railway vehicles have been a topic of research for a number of decades and while their applications in service operation are limited it seems clear that they will in due course see widespread adoption. Railway suspension design is a problem of compromise on the non-trivial trade-off of ride quality vs track following (guidance), and the skyhook damping control approach has been paramount in illustrating the potential benefits. Since skyhook damping control, various advanced control studies appeared contributing to redefine the boundaries of the aforementioned trade-off. Yet there is no study on the impact of fractional order methods in the context of skyhook railway active suspensions, and in particular related to skyhook damping control. This is the area to which this paper strongly contributes. We present findings from a current project on fractional order controllers for railway vehicles active suspensions, in particular work on the effect of fractional order methods in basic skyhook damping control schemes, i.e. pure and intuitively-based skyhook. Firstly we present a brief review of conventional skyhook damping control and then proceed to a rigorous investigation of the impact of fractional order on the ride quality / track following trade-off. The relevant benefits from fractional order methods are appraised and new insights highlighted.

Keywords:railway suspension, suspension control, fractional skyhook damping, Active suspensions, fractional-order control, ride comfort
Subjects:H Engineering > H660 Control Systems
H Engineering > H332 Rail Vehicle Engineering
Divisions:College of Science > School of Engineering
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ID Code:30265
Deposited On:16 Feb 2018 22:07

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