Experimental testing of longitudinal acceleration in urban buses

Szumska, Emilia; Stańczyk, Tomasz; Zuska, Andrzej; Grabski, P; Jáskiéwicz, Marek; Jurecki, Rafał; Kurczyński, D.; Łagowski, Piotr

doi:10.1088/1757-899x/1247/1/012017

Cited by 4 publications

(4 citation statements)

References 17 publications

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“…Three-axis accelerometers are used to measure vehicle acceleration relative to three perpendicular coordinate axles. Examples of using three-axis accelerometers for vehicle dynamics testing can be found in [ 1 , 2 , 3 ]. Currently, there are increasing numbers of studies in which accelerometers are mounted in wheel rims [ 4 , 5 , 6 ].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Longitudinal Acceleration of Urban Buses and Coaches in Different Road Maneuvers

Frej

Grabski

Jurecki

et al. 2023

Sensors

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A vehicle’s longitudinal acceleration is a parameter often used for determining vehicle motion dynamics. This parameter can also be used to evaluate driver behavior and passenger comfort analysis. The paper presents the results of longitudinal acceleration tests of city buses and coaches recorded during rapid acceleration and braking maneuvers. The presented test results demonstrate that longitudinal acceleration is significantly affected by road conditions and surface type. In addition, the paper presents the values of longitudinal accelerations of city buses and coaches during their regular operation. These results were obtained on the basis of registration of vehicle traffic parameters in a continuous and long-term manner. The test results showed that the maximum deceleration values recorded during the tests of city buses and coaches in real traffic conditions were much lower than the maximum deceleration values found during sudden braking maneuvers. This proves that the tested drivers in real conditions did not have to use sudden braking. The maximum positive acceleration values recorded in acceleration maneuvers were slightly higher than the acceleration values logged during the rapid acceleration tests on the track.

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Section: Introductionmentioning

confidence: 99%

Experimental Study on Longitudinal Acceleration of Urban Buses and Coaches in Different Road Maneuvers

Frej

Grabski

Jurecki

et al. 2023

Sensors

View full text Add to dashboard Cite

show abstract

“…Bus drivers often work at night, on weekends and public holidays. Based on the research presented in [33], it was found that fatigue and the need for the recuperation of the body mediate the relationship between work tension and risky driving behaviour [21,34]. The driver's fatigue is caused by many personal factors, such as stress and the need for organizational support, as well as factors related to the working environment [4,18,35].…”

Section: Introductionmentioning

confidence: 99%

“…This allows for the conclusion that any such behaviour may result in a high risk of a road accident. The correlation analysis presented in [33] allowed for the determination of indexes of a positive and significant relationship between the errors of reaction while driving a vehicle and general fatigue of the driver and the fatigue caused by driving. Fatigue results (both general and work-induced) translated into the higher rates of risky driving behaviour.…”

Section: Introductionmentioning

confidence: 99%

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Preliminary driving style classification of the professional drivers

Szumska

Stańczyk

2022

The Archives of Automotive Engineering – Archiwum Motoryzacji

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Driving style and driver behaviour are important in evaluating city bus drivers. Buses are one of the means of public transportation in cities, used by millions of people. The purpose of this study was to present a model for preliminary classification of driving style of the professional drivers based on averaged maximum values of lateral and longitudinal acceleration recorded during regular work. First, the recorded acceleration values of 69 city bus drivers were analysed. Then, the correlation between the acceleration values and the age and experience of the city bus drivers was examined. Based on the results of the preliminary classification of drivers, extreme values for both lateral acceleration and longitudinal acceleration (deceleration and acceleration) were obtained by 3 drivers out of the 69 tested. The study also examined the relationship between averaged values of maximum lateral and longitudinal acceleration and driver age and experience. Based on the correlation results, showed that age and the number of years of holding a driver's license are not significantly related to acceleration. Therefore, the method can be used to analyse drivers regardless of their age and experience.

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Development of a hybrid intelligent switching hydraulically interconnected suspension system under a multi-objective optimized mode selection strategy with real-world condition

Damavandi,

Mashadi,

Masih-Tehrani

2024

Proceedings of the Institution of Mechanical Engineers, Part D:

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Reduction in vertical acceleration is crucial for car manufacturers. This parameter evaluates the comfort index. Moreover, the handling index is another feature that must be under investigation. The suspension system has an essential impact on these two indices. A hybrid intelligent switching hydraulically interconnected suspension (HISHIS) is proposed. The parallel configuration is combined with the diagonal configuration in the suspension system. A mode selection strategy is discussed to select the layout between diagonal and parallel configurations. The only mode of parallel configuration is called Anti-pitch configuration. The diagonal configuration has three modes, including Anti-roll, Anti-oversteering, and Anti-vibration configuration. According to the mode selection strategy, one of these three diagonal configuration modes might be selected. The origin of roll and pitch generation is inertia force and road inputs. Hopfield neural network can recognize the origin of roll and pitch generation. Therefore, the performance of valves will change according to Hopfield neural network recognition. The results of different maneuvers show the improvement at each targeted parameter in various tasks independently. The data logger gathered the acceleration of the vehicle in real-world conditions. However, the margins of the selection strategy block are multi-objective optimized with a genetic algorithm to reach better responses in real-world conditions. The roll angle, yaw rate, allowable exposure time, and pitch angle are improved by 63%, 5%, 40%, and 99% on average. Also, optimizing the selection strategy improves the allowable exposure time by 9%. Obviously, by combining two layouts, it is possible to have a flexible situation to improve ride comfort and handling situations. In addition, there is a conditional strategy to select different layouts and modes to reach a better response.

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Experimental testing of longitudinal acceleration in urban buses

Cited by 4 publications

References 17 publications

Experimental Study on Longitudinal Acceleration of Urban Buses and Coaches in Different Road Maneuvers

Experimental Study on Longitudinal Acceleration of Urban Buses and Coaches in Different Road Maneuvers

Preliminary driving style classification of the professional drivers

Development of a hybrid intelligent switching hydraulically interconnected suspension system under a multi-objective optimized mode selection strategy with real-world condition

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