Identification of safety hazards and operating conditions of the low-floor tram with independently rotating wheels with various drive control algorithms

Robert Konowrocki,Artur Marczewski,Tomasz Szolc,Dariusz Kalinowski

doi:10.17531/ein.2021.1.3

Robert Konowrocki, Artur Marczewski + Show 2 more

Open Access

https://doi.org/10.17531/ein.2021.1.3

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Abstract

The aim of the article is to develop a method for the analysis of tram dynamics related to safety during operation. To achieve this, a mathematical model of the vehicle represented by a multibody simulation MBS system is used. Models of tram with a classic and innovative drive, based on a system of independently rotating wheels on crank axles are analyzed. A new configuration of an innovative drive control of the considered vehicle with the use of braking of independent wheels is proposed. A new geometry of test track is presented. During numerical investigation the values of ‘Y’ leading forces of tram wheels with the considered innovative drive proved to be lower than in the corresponding vehicle with standard wheelsets. It has been demonstrated that the active control systems are of key importance and should be applied in such innovative tram drives.

Highlights

In years 2014 to 2020, the European transport infrastructure began to change
In the period 2014-2020 the projects were financed from the European Structural and Investment Funds (ESIF), the the Cohesion Fund (CF) and the European Regional Development Fund (ERDF)
The result values of the wheel lift Dz of the front wheelset of the MB1 bogie for the left (FL) and right (FR) wheels obtained on the basis of the test results, were presented separately for each of the control algorithms used as a function of the curve radius and track gauge

Summary

Introduction

In years 2014 to 2020, the European transport infrastructure began to change. This transformation was triggered by introducing common EU policy aimed at effective, safe and economically efficient movement of people and goods as well as reduction of environmental pollution as a part of a new EU sustainable development transport policy. Great amount of submitted applications concerned the design and construction of new public transport infrastructure as well as modernization of the existing one, including the tram rolling stock [47, 33]. In Poland, very good examples of projects financed from the ESIF were tram projects approved for implementation, e.g.

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