A Study of the Closed-Loop Directional Stability of Various Commercial Vehicle Configurations
TLDR
The results of the disturbance input calculations indicated that under low lateral acceleration conditions, drivers of different commercial vehicle configurations should be capable of providing adequate control compensation to achieve more or less equal stability margins for most systems as discussed by the authors.Abstract:
SUMMARY Computer analysis of the closed-loop directional stability of four common commercial vehicle configurations was performed using 1) a disturbance input technique to study low lateral acceleration driving conditions, and 2) a lane-change maneuver for studying system response at elevated lateral acceleration conditions. The results of the disturbance input calculations indicated, that under low lateral acceleration conditions, drivers of different commercial vehicle configurations should be capable of providing adequate control compensation to achieve more or less equal stability margins for most systems. Evaluation of directional stability, based upon the transient lane-change maneuver, indicated systematic reduction in system damping for all vehicles with Increased levels of lateral acceleration. The 5-axle tractor-semitrailer system exhibited the greatest level of directional damping and rollover immunity during the lane-change maneuver. The truck full-trailer was the least damped system while als...read more
Citations
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Constant Velocity Yaw/Roll Program: user's manual. Final report
TL;DR: The Constant Velocity Yaw/Roll Model (CYRM) as discussed by the authors is a computer-based mathematical simulation program that simulates the turning and rolling behavior of motor vehicles in constant-speed manoeuvres.
Journal ArticleDOI
Structure of the driver model for articulated vehicles
TL;DR: In this article, the driver's preview and prediction based upon the lateral position and orientation of the trailing unit yields oscillatory vehicle response and pose unacceptable steering demand on the driver, and eight different multi-loop structures of the driver-vehicle system are formulated to represent the driver perception of different vehicle motion variables.
Journal ArticleDOI
Closed-loop directional stability of car-trailer combinations in straight-line motion
S. Tousi,Anil K. Bajaj,W. Soedel +2 more
TL;DR: In this article, the interaction between a driver and a car-trailer combination is analyzed by the application of Routh-Hurwitz criteria and stability boundaries in parameter space are constructed by setting appropriate Hurwitz determinant to zero.
Dissertation
Steering Control Characteristics of Human Driver Coupled with an Articulated Commercial Vehicle
TL;DR: In this paper, a two-stage driver model incorporating curved path geometry in addition to essential human driver cognitive elements such as path preview/prediction, error estimation, decision making and hand-arm dynamics, is proposed.
Journal ArticleDOI
Lateral Dynamics and Stability of Two Full Vehicles in Tandem
N. A. El-Esnawy,James F. Wilson +1 more
TL;DR: In this paper, the lateral dynamics and stability of two full vehicles in tandem are investigated, and the critical forward velocity of the steady state for oversteering conditions is derived in a closed form, and criteria for understeer, neutral steer, or oversteer are given.
References
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Journal ArticleDOI
Application of an Optimal Preview Control for Simulation of Closed-Loop Automobile Driving
TL;DR: An optimal preview control method is applied to the automobile path following problem to examine the straight-line regulatory driving task and results compared with similar experimental measurements.
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Linear control system analysis and design
TL;DR: This paper presents a meta-modelling architecture suitable for linear control system analysis and design and some examples of such systems have been designed and tested in the wild.
Journal ArticleDOI
Measurement of Driver-Vehicle Multiloop Response Properties with a Single Disturbance Input
TL;DR: The validity of the procedure is based on current multiloop operator adjustment rules and is made plausible by comparison with experimental data, and the quantitative values of the individual describing functions can be readily identified using appropriate closed-loop describing function measures and decomposition procedures.
Constant Velocity Yaw/Roll Program: user's manual. Final report
TL;DR: The Constant Velocity Yaw/Roll Model (CYRM) as discussed by the authors is a computer-based mathematical simulation program that simulates the turning and rolling behavior of motor vehicles in constant-speed manoeuvres.
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