A comparative study of legislation and stability measures of heavy articulated vehicles in different regions

Wideberg, Johan; Dahlberg, Erik

doi:10.1504/ijhvs.2009.027138

Cited by 14 publications

(7 citation statements)

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“…Figure 22 -Trailer Swing on biarticulated vehicle [30] In another study, the vehicles dynamic characteristics were verified according of the country legislation (Table 4) [26]. The European (EU) configuration is similar to the Brazilian single articulation vehicle.…”

Section: The Effectiveness Of Control Systemsmentioning

confidence: 94%

“…The "Brazil" configuration, refers to a bi-articled 19.8m vehicle, which presented the worst stability condition on this study: The highest rear amplification and one of the worst damping rates for yaw instabilities. [26] Even if biarticulated compositions is equipped with ESC system, can be said this system has no effective, as shown by Bendix manufacturer, that presents the following note in its manual: "The ESP Bendix system (...) is designed and optimized for tractor trucks that tow a single trailer. If the tractor truck equipped with Bendix ESP is used to drive combinations with multiple trailers (...) the effectiveness of the ESP Bendix system can be greatly reduced.…”

Section: The Effectiveness Of Control Systemsmentioning

confidence: 99%

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Desenvolvimento de um Sensor de Quinta Roda para o Monitoramento da Dinâmica do Conjunto Veicular em Caminhões Articulados

Batista¹,

Tomio²,

Gutiérrez³

2021

Blucher Engineering Proceedings

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Today in the Brazilian cargo vehicle industry, there is a technological research for solutions to meet the CONTRAN Resolution 641:2016 [1], which made mandatory stability and anti-rollover control systems in cargo trailers and semitrailers in Brazil after 2024. Even though the government concern to reduce the truck's rollover accidents indices is very pertinent, there is another frequent occurrence which still don't have an efficient technological solution for it controls. By the way, in many cases, it is the main cause of the rollover accidents on long cargo vehicles: The Trailer Swing Effect.This paper presents an applicability study of innovative sensors for the vehicle articulation (fifth wheel). These sensors will monitor the vehicle dynamics for identifying the Trailer Swing Effect. This technology will be fully present in the tractor vehicle, acting independently of the characteristics and the semitrailer technological level. CONTEXTUndoubtedly, innovations in the automotive sector provides a great competitive advantage to any company. However, the innovative process is not simple, due the technological and commercials uncertainties that a disruptive project presents. For these reasons, there isn't many innovative technology-based companies (startups) in this sector. Even in this scenario, the Truck Vision Company, a Brazilian startup, decided to innovate from a difficulty observed in the clients: Despite all the technology embedded, in some situations still required a great driver's skills to maneuver articled vehicles.

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Section: The Effectiveness Of Control Systemsmentioning

confidence: 94%

Section: The Effectiveness Of Control Systemsmentioning

confidence: 99%

Desenvolvimento de um Sensor de Quinta Roda para o Monitoramento da Dinâmica do Conjunto Veicular em Caminhões Articulados

Batista¹,

Tomio²,

Gutiérrez³

2021

Blucher Engineering Proceedings

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“…9 This relationship is known as the tire characteristic curve and has direct influence on the stability boundaries of vehicles. 10 In order to take into consideration the nonlinear behavior of the characteristic curve, polynomial models 11–13 or the Magic Formula tire model 10,14,15 can be used.…”

Section: Introductionmentioning

confidence: 99%

Assessing the influence of the road-tire friction coefficient on the yaw and roll stability of articulated vehicles

Mendes

Fleury²,

Ackermann

et al. 2018

Proceedings of the Institution of Mechanical Engineers, Part D:

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This article addresses the yaw stability of articulated vehicles by assessing the influence of the road-tire friction coefficient on the convergence region of a particular equilibrium condition. In addition, the boundaries of this region are compared to the boundaries of the non-jackknife and non-rollover regions to distinguish the instability phenomenon, jackknife or roll-over, responsible for this delimitation. The vehicle configuration considered in this analysis is composed by one tractor unit and one towed unit connected through an articulation point, for instance, a tractor-semitrailer combination. A nonlinear articulated bicycle model with four degrees of freedom is used together with a nonlinear lateral force tire model. To estimate the convergence region, the phase trajectory method is used. The equations of motion of the mathematical model are numerically integrated for different initial conditions in the phase plane, and the state orbits are monitored in order to verify the convergence point and the occurrence of instability events. In all cases, the longitudinal force on each tire, such as traction and braking, is not considered. The results show the existence of convergence regions delimited only by jackknife events, for low values of the friction coefficient, and only by rollover events, for high values of the friction coefficient. Moreover, the transition between these two conditions as the friction coefficient is changed is graphically presented. The main contributions of this article are the identification of the abrupt reduction of the convergence region as the value of the friction coefficient increases and the distinction of the instability events, jackknife or rollover, that define the boundaries of the convergence region.

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“…Articulated heavy vehicles (AHVs) and, in particular, multi-trailer articulated heavy vehicles (MTAHVs) have poor low-speed manoeuvrability and low highspeed stability because of their complex structures, large sizes and high centre of gravity (CG). 1,2 The past two decades have witnessed investigations into solutions to improve the directional performance of AHVs with a single trailer using active trailer-steering (ATS) control. [3][4][5][6][7][8][9] Compared with AHVs with a single trailer, MTAHVs usually have more vehicle units and mechanical coupling joints, resulting in a longer total length and a worse directional performance.…”

Section: Introductionmentioning

confidence: 99%

Design of an active trailer-steering system for multi-trailer articulated heavy vehicles using real-time simulations

Ding

Mikaric

2012

Proceedings of the Institution of Mechanical Engineers, Part D:

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This paper presents the design for an active trailer-steering system of multi-trailer articulated heavy vehicles using driver-software-in-the-loop real-time simulations. A linear yaw-plane multi-trailer articulated heavy-vehicle model is generated to derive an optimal active trailer-steering controller. Then, the controller is reconstructed in LabVIEW and integrated with a vehicle model for a tractor– double-trailer combination developed in TruckSim. The driver-software-in-the-loop real-time simulations are conducted on a vehicle simulator. The driver-software-in-the-loop real-time simulations indicate that the active trailer-steering controller can effectively improve the low-speed manoeuvrability and high-speed stability of the multi-trailer articulated heavy vehicle when testing using a low-speed 360° roundabout path-following manoeuvre and a high-speed single-lane-change manoeuvre respectively. The investigation based on the driver-software-in-the-loop real-time simulations paves the way to future development of electronic control units for the active trailer-steering system using driver-hardware-in-the-loop real-time simulations.

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A comparative study of legislation and stability measures of heavy articulated vehicles in different regions

Cited by 14 publications

References 0 publications

Desenvolvimento de um Sensor de Quinta Roda para o Monitoramento da Dinâmica do Conjunto Veicular em Caminhões Articulados

Desenvolvimento de um Sensor de Quinta Roda para o Monitoramento da Dinâmica do Conjunto Veicular em Caminhões Articulados

Assessing the influence of the road-tire friction coefficient on the yaw and roll stability of articulated vehicles

Design of an active trailer-steering system for multi-trailer articulated heavy vehicles using real-time simulations

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