Simulation of Vehicle and Power Steering Dynamics Using Tire Model Parameters Matched to Whole Vehicle Experimental Results

Jang, Bongchoon; Karnopp, Dean

doi:10.1076/0042-3114(200002)33:2;1-1;ft121

Cited by 14 publications

(8 citation statements)

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“…Such models, however, may not yield adequate prediction of the handling response in the presence of appreciable roll motion. Consequently, a 3D vehicle model is formulated to incorporate both yaw and roll motions of the sprung mass together with the non-linear suspension and tyre properties; the model formulation is based on the 3D yaw-roll model, whose validity has been demonstrated for different commercial vehicles [16][17][18][19][20][21]. The vehicle model is formulated with a total of five degrees of freedom (5 DOF) attributed to lateral, yaw, and roll motions of the sprung mass, and the roll motions of the two unsprung masses, as shown in Fig.…”

Section: Vehicle Handling Model and Analysesmentioning

confidence: 99%

Influence of tyre pressure on an urban bus transient and steady state handling performance

Al-Solihat

Rakheja

Ahmed

2010

Proceedings of the Institution of Mechanical Engineers, Part D:

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The influence of the variation in the tyre inflation pressure on the steady state and transient handling dynamics of an urban bus are investigated through analysis of a three-dimensional (3D) vehicle model. A five-degrees-of-freedom handling dynamic model of the bus is formulated incorporating the non-linear models of the suspension components and the tyre. The vertical stiffness properties of the tyre are characterized through a regression model under normal load and the inflation pressure that was formulated on the basis of the laboratory measured data. The available tyre data on the cornering properties of tyres are analysed to derive a modified ‘magic formula’ for predicting the cornering properties as functions of the inflation pressure and the normal load. The proposed model responses showed reasonably good agreement with the available measured data over ranges of the inflation pressures and normal loads. The 3D handling dynamic model was subsequently analysed under sinusoidal and ramp-step steering inputs to study the influence of the tyre pressure on the steady state and transient handling responses. The results show notable influences of the tyre pressures on both the steady state and the transient handling properties.

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Section: Vehicle Handling Model and Analysesmentioning

confidence: 99%

Influence of tyre pressure on an urban bus transient and steady state handling performance

Al-Solihat

Rakheja

Ahmed

2010

Proceedings of the Institution of Mechanical Engineers, Part D:

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“…To calculate the steering torque, the relationship between the front-tyre resistance torque and the steering states of the vehicle is often investigated to obtain the steering resistance torque, and then the steering torque that is fed back to driver is obtained by subtracting the power assistance torque from the power steering system. 2,9–12 Reimpell et al 5 divided the resistance torque into four parts based on the forces acting on the steered wheels. Jang and Karnopp 10 obtained the steering torque on the basis of the feedback of the tyre forces using the model of the power steering system based on a six-degree-of-freedom vehicle model.…”

Section: Introductionmentioning

confidence: 99%

“…2,9–12 Reimpell et al 5 divided the resistance torque into four parts based on the forces acting on the steered wheels. Jang and Karnopp 10 obtained the steering torque on the basis of the feedback of the tyre forces using the model of the power steering system based on a six-degree-of-freedom vehicle model. In the above reports, the steering torque is usually determined by the road adhesion coefficient, the vertical load of the tyres, the suspension parameters, the slip angles of the tyres, etc.…”

Section: Introductionmentioning

confidence: 99%

Investigation of a steering defect and its compensation using a steering-torque control strategy in an extreme driving situation

Liu

et al. 2017

Proceedings of the Institution of Mechanical Engineers, Part D:

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Road feel is mostly represented by the steering torque or the steering-torque gradient of the lateral acceleration, and it is used by the driver to adjust the vehicle states and to control the vehicle. A steering defect indicated by a decreasing steering torque with increasing lateral acceleration makes the driver lose road feel and may result in a wrong operation and even a traffic accident. The case where the driver loses road feel can be regarded as an extreme driving situation. This paper investigates the steering defect and proposes a steering-torque-based control strategy to improve road feel in a vehicle in an extreme driving situation. The steering torque and the steering-torque gradient extended to the non-linear region of the vehicle are analysed and simulated, and both the simulation results and the experimental results indicate that the steering defect exists when the lateral acceleration is relatively high. Thus, a steering-torque control strategy is proposed on the basis of the torque gradient to improve road feel in an extreme situation. This steering-torque control strategy helps to maintain road feel by employing an optimized steering-torque threshold. The simulation results of the vehicle with steering-torque control show improved road feel in comparison with that without steering-torque control.

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“…However, the differences between different simulations using the same vehicle model were seldom researched in the available literatures, and these were very important in validating the full-vehicle model. Steering and suspension system models are the most important component parts in vehicle model in handling stability simulations [7,8]. Steering drive mechanism modelling are the crux in steering system modelling, and the crux in suspension modelling is the steering axle leaf spring modelling, equalizing suspension leaf spring in driving axle and guide mechanism modelling.…”

Section: Introductionmentioning

confidence: 99%

Handling Stability Simulation and Test Research on an 8×4 Type Construction Truck

Fulong²

2016

IJCA

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Full-vehicle model plays a key role in vehicle handling stability simulations, and the same vehicle model does not adapt to all kinds of vehicle simulations. In the thesis, the vehicle mechanisms of an 8×4 type construction truck were appropriately simplified and the fullvehicle parameterized multi-body dynamic model was developed according to the topology mechanical map of each part. The vehicle model suitability was researched through comparing the vehicle simulation results with the test results in lemniscate and returnability simulations. The comparison results show that the lemniscate simulation errors of the steering wheel angle, yaw angle velocity and lateral acceleration amplitude of the cargo mass centre are 3.9%, 4% and 4.4% respectively, and the returnability simulation errors of the residual steering wheel angle, residual yaw angle velocity and lateral acceleration of the cargo mass centre are 95%, 77.8% and 80% respectively. The simulation and test results all show that the lemniscate simulation errors are smaller than the returnability simulation errors because the model input was the steering wheel angular displacement in lemniscate simulation while the model input was the forces caused from the road and vehicle movement in returnability simulation. In brief, there exist significant error variations for the same vehicle model in different simulations.

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Simulation of Vehicle and Power Steering Dynamics Using Tire Model Parameters Matched to Whole Vehicle Experimental Results

Cited by 14 publications

References 0 publications

Influence of tyre pressure on an urban bus transient and steady state handling performance

Influence of tyre pressure on an urban bus transient and steady state handling performance

Investigation of a steering defect and its compensation using a steering-torque control strategy in an extreme driving situation

Handling Stability Simulation and Test Research on an 8×4 Type Construction Truck

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