The benefits of mechatronically-guided railway vehicles: A multi-body physics simulation study
journal contributionposted on 13.04.2018, 08:17 by Nabilah Farhat, Christopher Ward, Roger Goodall, Roger Dixon
Mechatronically-guided railway vehicles are of paramount importance in addressing the increasing interest in reducing wheel-rail wear and improving guidance and steering. Conventional passively-guided rail vehicles are limited by the mechanical constraints of the suspension elements. Currently, a typical rail vehicle suspension needs to be sufficiently stiff to stabilize the wheelsets while being complaint enough to negotiate curved track profiles. The suspension is therefore a compromise for the contradictory requirements of curving and stability. In mechatronic vehicles, actuators are used with the conventional suspension components to provide additional stiffness or damping forces needed to optimise a vehicle for a wide variety of scenarios, and not rely on a sub optimal combination of passive components. This research demonstrates the benefits of active guidance and steering when compared to a conventional vehicle using simulation results from a multi-body simulation software Simpack. It also provides insights into the relative performance of the mechatronic schemes. The Simpack modeling allows for a complex model with high fidelity, which provides an additional level of proof of the control algorithms working on a real rail vehicle. Each vehicle is assessed in terms of guidance on straight track, steering on curved track, actuation requirements and wheel-rail wear. Significant benefits are demonstrated in one of the guided vehicles with independently-rotating wheelsets.
The research has been supported by a Loughborough University studentship and European Unions Horizon 2020: the Framework Programme for Research and Innovation (2014–2020) through grant number 635900 for the project IN2RAIL: Innovative Intelligent Rail.
- Mechanical, Electrical and Manufacturing Engineering