Identification of linear handling models for road vehicles

Arıkan, Kutluk Bilge; Ünlüsoy, Y. Samim; Korkmaz, I.; Çelebi, A. Okay

doi:10.1080/00423110701576122

Cited by 14 publications

(17 citation statements)

References 9 publications

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“…The commonly used vehicle model for a handling study is a half-car single-track model (or bicycle model) with three degrees of freedom (DOFs; the longitudinal, lateral, and yaw motions of vehicle) [7][8][9]. This model neglects the effects of the unsprung mass and suspension properties and It has been stated that the objective of this study is to investigate the transient handling behaviour of a PSS vehicle when the wheels experience dynamic relative motions with respect to the chassis.…”

Section: Introductionmentioning

confidence: 99%

Handling transient response of a vehicle with a planar suspension system

Zhu

Khajepour

Esmailzadeh

2011

Proceedings of the Institution of Mechanical Engineers, Part D:

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A novel design of a planar suspension system (PSS) is proposed to overcome the limitation of a conventional vehicle suspension system that cannot sufficiently absorb the vibrations and shocks caused by the road obstacles in the longitudinal direction because of the very stiff longitudinal connections between the chassis and the wheels. The rather stiff longitudinal linkages are replaced by a spring-damper strut. The results of the investigation into the transient handling behaviour of a vehicle with a PSS in three different scenarios are presented. These include a vehicle turning on a bumpy road, a vehicle turning combined with braking, and a lane change manoeuvre combined with acceleration. The results obtained from this study demonstrate that the PSS vehicle can effectively suppress the vibrations and shocks in the longitudinal direction without causing the handling performance to deteriorate. It has been shown that the vehicle-handling behaviour is generally comparable with, and under some conditions even better than, those reported for vehicles with a conventional suspension system.

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Section: Introductionmentioning

confidence: 99%

Handling transient response of a vehicle with a planar suspension system

Zhu

Khajepour

Esmailzadeh

2011

Proceedings of the Institution of Mechanical Engineers, Part D:

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“…Arikan et al [9] presented a prediction error method to identify the physical parameter of the LTI single-track vehicle model. The model structure mainly depended on theoretical derivation, and these methods more focused on parameter estimation.…”

Section: Introductionmentioning

confidence: 99%

Vehicle handling dynamics modelling by a data-driven identification method

Guan

Zhang

2015

Vehicle System Dynamics

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Modelling of vehicle handling dynamics has received a renewed attention in recent years. Different from traditional vehicle modelling, a novel data-driven identification method for vehicle handling dynamics is proposed, which can avoid the problems of the under-modelling and parameter uncertainties in the first-principle modelling process. By first-order Taylor expansion, the nonlinear vehicle system can be linearised as a slowly linear time-varying system with fourth-order. In order to identify the derived identifiable model structure, a recursive subspace method is presented. Derived by optimal version of predictor-based subspace identification (PBSID opt ) and projection approximation subspace tracking (PAST), the identification method is numerical stability and gives an unbiased estimation for the closed-loop system. Based on standard road tests, the proposed modelling method is proven effective and the obtained model has good predictive ability. Additionally, it is noted that the model obtained from the initial phase of straight driving is just a mathematical model to describe the relationship between input and output. And when the vehicle is steering, the model can converge to a stable phase quickly and represent vehicle dynamic performance.

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“…Agharkakli et al [12] presented a mathematical model for passive and active quarter car suspension systems. Ikenaga et al [13]conducted a research study to improve road handling and ride comfort. An active suspension control system was presented based on a full vehicle model which included the performance of the suspension system.…”

Section: Introductionmentioning

confidence: 99%

Effects of Spring Stiffness on Suspension Performances Using Full Vehicle Models

Hamed¹,

Elrawemi²,

Gu³

et al. 2018

Proceedings of First Conference for Engineering Sciences and Technology: Vol. 2

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Suspension system has significant influence on the passenger safety, providing comfortable ride, stability, and handling of the vehicle. The aims of the present research are to investigate and quantify the effect of spring weakness on suspension performance. This is based on a MATLAB simulation analysis of a seven degree-of-freedom (7-DOF) model for a full vehicle. In the simulation, the suspension faults were seeded by reducing the spring stiffness by 25%, 50% and 80%. The model was validated using experimental data, collected by driving the vehicle across bumps. The simulation results for varying degrees of spring stiffness indicated that the ride comfort was decreased as the spring stiffness was increased for excitation frequencies close to resonant frequencies of the vehicle body (approximately 1 Hz). As spring stiffness was increased at excitation frequencies below 1 Hz, the suspension travel was reduced. Within the zone of resonant frequency of sprung mass, the deformation amplitudes were increased as the spring stiffness increased. Moreover, Frequency Response Functions analysis has been used for fault detection of reduction of spring's stiffness by 25%, 50% and 80%.

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Identification of linear handling models for road vehicles

Cited by 14 publications

References 9 publications

Handling transient response of a vehicle with a planar suspension system

Handling transient response of a vehicle with a planar suspension system

Vehicle handling dynamics modelling by a data-driven identification method

Effects of Spring Stiffness on Suspension Performances Using Full Vehicle Models

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