STEERING FEEL AND STEER-BY-WIRE – Steering feel in heavy trucks – a driver oriented approach to evaluate different configurations of steering support

Boller, Alisa

doi:10.1007/978-3-658-14219-3_39

Cited by 2 publications

(3 citation statements)

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“…First, driving speed affects steering sensitivity and steering torques. The use of a constant speed via cruise control eliminates these confounds, and is in accordance with other research (Boller et al, 2017;DeWitt et al, 1999) and an ISO norm (11012:2009) on the evaluation of steering characteristics of heavy goods vehicles. Second, by keeping speed constant, we ensured that all participants experienced the same road and traffic conditions as a function of elapsed time, which, in turn, allowed us to perform synchronized analyses of lane keeping and overtaking as a function of elapsed time.…”

Section: Driving Tasksupporting

confidence: 77%

“…The steering system is a crucial part of any vehicle. The design of the steering system does not only have effects on subjective feel and comfort (Boller et al, 2017;Peppler et al, 1999;Pfeffer et al, 2008;Rothhämel, 2013;Tagesson, 2017), it also affects lane-keeping performance (Anand et al, 2013;Nagai and Koike, 1994;Shyrokau et al, 2015). In most current vehicles the steering system is a complex arrangement of mechanical linkages, leading to nonlinear steering characteristics due to friction, damping, and play between the steering components.…”

Section: Introductionmentioning

confidence: 99%

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The effect of steering-system linearity, simulator motion, and truck driving experience on steering of an articulated tractor-semitrailer combination

et al. 2018

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Steering systems of trucks consist of many linkages, which introduce nonlinearities that may negatively affect steering performance. Nowadays, it is possible to equip steering systems with actuators that provide artificial steering characteristics. However, before new steering systems are deployed in real vehicles, evaluation in a safe and controlled simulator environment is recommended. A much-debated question is whether experiments need to be performed in a motion-base simulator or whether a fixed-base simulator suffices. Furthermore, it is unknown whether simulator-based tests can be validly conducted with a convenience sample of university participants who have not driven a truck before. We investigated the effect of steering characteristic (i.e., nonlinear vs. linear) on drivers' subjective opinions about the ride and the steering system, and on their objective driving performance in an articulated tractor-semitrailer combination. Thirty-two participants (12 truck drivers and 20 university drivers) each completed eight 5.5-min drives in which the simulator's motion system was either turned on or off and the steering model either resembled a linear (i.e., artificial) or nonlinear (i.e., realistic) system. Per drive, participants performed a lane-keeping task, merged onto the highway, and completed four overtaking manoeuvers. Results showed that the linear steering system yielded less subjective and objective steering effort, and better lane-keeping performance, than the nonlinear system. Consistent with prior research, participants drove a wider path through curves when motion was on compared to when motion was off. Truck drivers exhibited higher steering activity than university drivers, but there were no significant differences between the two groups in lane keeping performance and steering effort. We conclude that for future truck steering systems, a linear system may be valuable for improving performance. Furthermore, the results suggest that on-centre evaluations of steering systems do not require a motion base, and should not be performed using a convenience sample of university students.

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Section: Driving Tasksupporting

confidence: 77%

Section: Introductionmentioning

confidence: 99%

The effect of steering-system linearity, simulator motion, and truck driving experience on steering of an articulated tractor-semitrailer combination

et al. 2018

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“…The characteristics of the steering system are known to influence the subjective steering feel and comfort [17][18][19] as well as lane-keeping performance [20,21]. An important parameter is the steering ratio, which is the ratio between the driver's steering wheel angle and the front wheel angle.…”

Section: Active Lateral and Longitudinal Vehicle Dynamicsmentioning

confidence: 99%

How do driving modes affect the vehicle’s dynamic behaviour? Comparing Renault’s Multi-Sense sport and comfort modes during on-road naturalistic driving

Melman

Winter

Mouton

et al. 2019

Vehicle System Dynamics

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Several modern vehicles provide the option to select a driving mode. However, the literature contains no empirical studies that investigate how driving modes affect the vehicle's dynamic behaviour in regular on-road driving. We examined for which CAN-bus signals the differences between Renault's Multi-Sense R comfort and sport modes are most apparent. We gathered data on a 26.3 km route containing a rural and highway section. A single person drove the route four times in comfort mode and four times in sport mode. By statistically analysing and ordering 887 CAN-bus signals, we found strong differences between the two modes for rear-wheel angle, engine torque, longitudinal acceleration, and vertical motion. Parameter identification of a quarter car model identified a 3.5 times higher damping coefficient for the sport mode compared to the comfort mode. Due to four wheel steering, compared to the comfort mode, the sport mode yielded a higher lateral acceleration and yaw rate for a given steering wheel angle and driving speed. In conclusion, this study provides quantitative insight into the extent to which the Multi-Sense driving modes impact the vehicle's lateral, longitudinal, and vertical dynamic behaviour. The results and the analysis methods help guide future driving mode designs.

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STEERING FEEL AND STEER-BY-WIRE – Steering feel in heavy trucks – a driver oriented approach to evaluate different configurations of steering support

Cited by 2 publications

References 0 publications

The effect of steering-system linearity, simulator motion, and truck driving experience on steering of an articulated tractor-semitrailer combination

The effect of steering-system linearity, simulator motion, and truck driving experience on steering of an articulated tractor-semitrailer combination

How do driving modes affect the vehicle’s dynamic behaviour? Comparing Renault’s Multi-Sense sport and comfort modes during on-road naturalistic driving

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