Showing papers in "Vehicle System Dynamics in 2020"
TL;DR: In this article, an integrated multi-objective controller for electric vehicles (EVs) is presented to achieve four main control objectives concurrently, i.e., slip control in traction and braking, lateral braking, and lateral acceleration.
Abstract: This study presents an integrated multi-objective controller for electric vehicles ( EVs) to achieve four main control objectives concurrently, i.e. slip control in traction and braking, lateral st...
108 citations
TL;DR: In this article, the state of the art of modelling, control, and optimisation for automated road vehicles that may utilize wireless vehicle-to-everything (V2X) connectivity is discussed.
Abstract: The state of the art of modelling, control, and optimisation is discussed for automated road vehicles that may utilise wireless vehicle-to-everything (V2X) connectivity. The appropriate tools to ad...
84 citations
TL;DR: In this article, a software stack capable of planning a minimum curvature trajectory for an autonomous race car on the basis of an occupancy grid map is presented, and a controller design that allows the car to adapt to the occupancy grid maps.
Abstract: This paper shows a software stack capable of planning a minimum curvature trajectory for an autonomous race car on the basis of an occupancy grid map and introduces a controller design that allows ...
75 citations
TL;DR: In this paper, an adaptive nonlinear model predictive control (NMPC) for vehicle tracking control is proposed, which learns in real time a tyre force model to adapt to a varying road surface.
Abstract: We propose an adaptive nonlinear model predictive control (NMPC) for vehicle tracking control. The controller learns in real time a tyre force model to adapt to a varying road surface that is only ...
56 citations
TL;DR: In this paper, the relevant standards have specified the operational limits for wheel flats in terms of the length of the wheel flat, but in the actual operation, in the case of railway wheels, these operational limits were not defined.
Abstract: Wheel flat is a common local defect occurring to railway wheels. The relevant standards have specified the operational limits for wheel flats in terms of the length. However, in the actual operatio...
56 citations
TL;DR: In this paper, a linear predictive lateral control method is proposed to stabilize a highly automated vehicle at the tire-road friction limits when tracking a (tight) desired path, which stabilizes the vehicle at a constant speed.
Abstract: This paper proposes a linear predictive lateral control method to stabilise a highly automated vehicle (HAV) at the tire-road friction limits when tracking a (tight) desired path. Two approaches ar...
47 citations
TL;DR: The book as mentioned in this paper represents the life-long collection of the author's work with his group in the field of Vehicle-Track Coupled Dynamics together with other Chinese contributions, including other contributions.
Abstract: The book represents the life-long collection of the author's work with his group in the field of Vehicle-Track Coupled Dynamics together with other Chinese contributions. The author is one of the f...
47 citations
TL;DR: In this paper, an articulated monorandom vehicle was used to optimize various vehicle parameters to meet the requirements of different objectives, such as vehicle speed, acceleration, and acceleration. But, the authors did not specify the parameters of the vehicle itself.
Abstract: In some researches of vehicle system dynamics, it’s necessary to optimise various of vehicle parameters to meet the requirements of different objectives. In this paper, an articulated monor...
45 citations
TL;DR: In this article, the authors propose a computational framework to deliver real-time control actions that optimise travel time, energy, and safety for connected and automated vehicle (CAV) technologies.
Abstract: The implementation of connected and automated vehicle (CAV) technologies enables a novel computational framework to deliver real-time control actions that optimise travel time, energy, and safety. ...
43 citations
TL;DR: In this paper, an increasing desire in the railway industry to improve the longevity of wheels and rails without reducing performance in other ways (e.g. worsening passenger comfort) is discussed.
Abstract: There is an increasing desire in the railway industry to improve the longevity of wheels and rails without reducing performance in other ways (e.g. worsening passenger comfort). One way of ...
38 citations
TL;DR: In this article, a three-dimensional vehicle-track coupled dynamics model, with the inclusion of the axle-box bearings, has been developed, which considers the coupling effects between the bearing and the vehicle.
Abstract: A three-dimensional vehicle-track coupled dynamics model, with the inclusion of the axle-box bearings, has been developed, which considers the coupling effects between the bearing and the vehicle c...
TL;DR: An Artificial Neural Network based algorithm to estimate the sideslip angle of a vehicle in different road conditions by means of three separate regression networks and identification of the road condition with a pattern recognition classifier allowing to select the correct estimation output among the three regression network outputs.
Abstract: This paper presents an Artificial Neural Network based algorithm to estimate the sideslip angle of a vehicle in different road conditions. The method is based on two parallel tasks: (a) estimation ...
TL;DR: Results show that pre-wiring effectively improves the performance and neural network models with a generic layer architecture and models with specialised topologies that hard-wire physics principles look to be preferable for several reasons.
Abstract: This paper studies neural network models of vehicle dynamics. We consider both models with a generic layer architecture and models with specialised topologies that hard-wire physics principles. Net...
TL;DR: In this article, the authors proposed a new safety system named emergency steering assist (ESA), which consists of the autonomous steering subsystem and differential braking subsystems, and the control system is develope...
Abstract: This paper proposes a new safety system named emergency steering assist (ESA), which consists of the autonomous steering subsystem and differential braking subsystem. The control system is develope...
TL;DR: In this article, the performance of a model predictive controller for coordination of connected, automated vehicles at intersections is analyzed. The problem has combinatorial complexity, and the controller is designed to solve it.
Abstract: In this paper, we analyse the performance of a model predictive controller for coordination of connected, automated vehicles at intersections. The problem has combinatorial complexity, and we propo...
TL;DR: In this paper, a hierarchical control scheme composed of two nonlinear model predicti cations is proposed for autonomous driving at at-limit handling in a vehicle with a nonlinear behavior.
Abstract: Autonomous driving at at-limit handling represents a big challenge due to the nonlinear behaviour of a vehicle. In this paper, a hierarchical control scheme composed of two Nonlinear Model Predicti...
TL;DR: In this paper, an integrated uncertainty and sensitivity procedure for use in performance assessment for train-bridge interactions is presented, where a train-ballasted track-bridgework is used.
Abstract: This paper is devoted to present an integrated uncertainty and sensitivity procedure for use in performance assessments for train–bridge interactions. Firstly, a train-ballasted track–bridg...
TL;DR: Aiming at the difficulty of vehicle lateral control in high-speed condition, a comprehensive control method that integrates active steering (AS) and direct yaw moment control (DYC) systems is proposed in this article.
Abstract: Aiming at the difficulty of vehicle lateral control in high-speed condition, a comprehensive control method that integrates active steering (AS) and direct yaw moment control (DYC) systems is propo...
TL;DR: In this article, the analysis of the dynamic behaviour of the catenary and the pantograph-catenary system is presented for electric traction railway vehicles, and the analysis is extended to the case of electric locomotives.
Abstract: The pantograph–catenary system is responsible to provide an uninterrupted energy supply to power electric traction railway vehicles. The analysis of the dynamic behaviour of the catenary and pantog...
TL;DR: In this paper, the friction coefficient between the tyres of an automobile and the road surface is estimated by measuring the friction coefficients between the car's rubber and the surface of the road.
Abstract: Sensing the friction coefficient between the tyres of an automobile and the road surface is a key challenge in automotive control. Accurate estimation of this parameter enables higher perfo...
TL;DR: In this paper, the dynamic parameters of Straddle-type monorail vehicles with single-axle bogies were optimized by using the multi-body dynamic method, and the dynamic parameter optimisation was conducted a...
Abstract: The dynamic parameters of Straddle-type monorail vehicles with single-axle bogies are optimised by utilising the multi-body dynamic method. The dynamic parameter optimisation is conducted a...
TL;DR: For performance improvement of modern vehicle dynamic control systems, exact knowledge of the vehicle motion state and the road conditions is essential as mentioned in this paper, which is addressed by the development and development of a dynamic control system.
Abstract: For performance improvement of modern vehicle dynamic control systems, exact knowledge of the vehicle motion state and the road conditions is essential. Addressing this problem, the development and...
TL;DR: In this article, the effect of wheel polygonal wear on railway vehicles was investigated, and the authors presented an investigation into the effects of wheel wear on the running safety of railway vehicles.
Abstract: Serious wheel polygonal wear usually causes drastic wheel/rail interactions, which threats the running safety of railway vehicles. This paper presents an investigation into the effect of polygonal ...
TL;DR: In this article, severe vibrations and an increase in structural component fatigue failures have been observed on a freight locomotive class operating on a heavy haul route within South Africa within the country.
Abstract: Severe vibrations and an increase in structural component fatigue failures have been observed on a freight locomotive class operating on a heavy haul route within South Africa. The root cau...
TL;DR: In this article, the relevant standards have specified the operational limits for wheel flats in terms of the length of the wheel flat, which is one of the most common defects occurring to railway wheels.
Abstract: Wheel flat is one of the most common defects occurring to railway wheels. The relevant standards have specified the operational limits for wheel flats in terms of the length. Therefore, the informa...
TL;DR: In this paper, a track condition monitoring system was developed for the preventive maintenance of the track by installing the on-board monitoring system for railway safety and the track condition was evaluated.
Abstract: Proper maintenance of railway tracks is essential to ensure railway safety. A track condition monitoring system was developed for the preventive maintenance of the track by installing the on-board ...
TL;DR: A model-based method relying on a multibody simulation code that performs the simultaneous identification of several suspension mechanical parameters from in-line acceleration measurements by embedded sensors, for maintenance purposes.
Abstract: This paper presents a novel method for the state health monitoring of high-speed train suspensions from in-line acceleration measurements by embedded sensors, for maintenance purposes. We propose a...
TL;DR: In this article, a three-dimensional, vehicle-track coupled dynamics model has been developed that accurately reflects the dynamic performance of a high-speed train during operation and includes novel elemen...
Abstract: A three-dimensional, vehicle–track coupled dynamics model has been developed that accurately reflects the dynamic performance of a high-speed train during operation. The model includes novel elemen...
TL;DR: In this paper, the authors evaluate the derailment behavior of railway wheelsets in railway turnouts and show that the train derailment is caused by the dynamic wheel-rail interaction.
Abstract: Dynamic wheel–rail interaction in railway turnouts is more complicated than on ordinary track. In order to evaluate the derailment behaviour of railway wheelsets in railway turnouts, this p...
TL;DR: In this paper, a new method is proposed to simulate vehicle-track-subgrade vertical dynamic interactions based on the Green function method, which is used to simulate the vehicle-to-vehicle (V2V) system.
Abstract: A new method is proposed to efficiently simulate vehicle-track-subgrade vertical dynamic interactions based on the Green function method. In this simulation, the vehicle-track-subgrade system is di...