A Comparison of Quarter, Half and Full Car Models for Predicting Vibration Attenuation of an Occupant in a Vehicle

Desai, Raj; Guha, Anirban; Seshu, P.

doi:10.1007/s42417-020-00278-3

Cited by 17 publications

(9 citation statements)

References 21 publications

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“…For this reason, three models are actively used in this research field: the quarter-car, the half-car, and the full-car models. Based on a comparison study [1], the quarter-car model does not give results close to the full-car model in nearly all the cases. However, when the driving condition is changed to a road with a bump, the quarter-car model gives a better approximation to the full-car model for three out of the eight components of accelerations of different body parts.…”

Section: Introductionmentioning

confidence: 94%

Design and Performance Assessment of Adaptive Harmonic Control for a Half‐Car Active Suspension System

2022

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The vehicle suspension system is represented by a complex group of components which connect the wheels to the frame or body. Its primary function is to reduce or absorb various vehicle vibrations generated by road disturbances, providing comfort and safety for passengers. Most modern vehicles have independent, active, or semiactive front and rear suspensions which allow the use of electronic actuation. For this reason, automotive engineers conduct research on the active suspension model to determine the most suitable control algorithm. Three active suspension models are intensely used within simulations: the quarter-car, the half-car, and the full-car models. This paper proposes an adaptive harmonic control for a half-car active suspension system. The mathematical model of the suspension system is implemented in the MATLAB/Simulink environment. The control approach is tested via simulation, and several comparisons with the classical proportional-integral controller are provided. The simulation results show that the controller behaves quite similarly on the half-car model as it did on a quarter-car model. Additionally, an improvement to the harmonic control algorithm has been accomplished.

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Section: Introductionmentioning

confidence: 94%

Design and Performance Assessment of Adaptive Harmonic Control for a Half‐Car Active Suspension System

2022

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“…Similarly, each one of the four tires is represented with a point mass and inertia. Suspension system and tires Quarter simple discrete vehicle model [2].…”

Section: Simple Discrete Modelmentioning

confidence: 99%

“…Quarter simple discrete vehicle model should be used for initial analysis. For further analysis, a half simple discrete vehicle model should be used for more accurate results which are also closer to the full simple discrete vehicle model when compared to dynamic responses [2]. Subsequently, a full simple discrete vehicle model should be used for more accurate results.…”

Section: Simple Discrete Modelmentioning

confidence: 99%

Modelling and Dynamic Analysis of a Vehicle

Çiçek¹

2023

The Dynamics of Vehicles - Basics, Simulation and Autonomous Systems

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In this topic, modelling of vehicles, dynamic analysis and verification of both vehicle model and dynamic analysis will be elaborated. Vehicle modelling can be performed by either using simple discrete models, finite element models or rigid bodies that are connected with elastic elements. Element types of each modelling method and in which circumstances can be used will be explained. Advantages and disadvantages will be encompassed. After that, vehicle model will be evaluated in terms of dynamic behaviours such as mode shapes and natural frequencies. Moreover, damping parameter selection methodology will be elaborated. Consequently, model verification methodologies will be handled such as modal tests and dynamic load tests. How the model can be updated according to the tests will be briefly explained.

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“…Regarding active control strategies, most of the existing literature assigns an imposed reference of absolute zero to vehicle movement in order to significantly reduce the vertical vibrations. 6 In fact, this leads to an increase in the amount of suspension deflection, which does not contribute to the stability of the car when driving. The contradicting requirement of driving stability and driving comfort can be balanced by a non-linear configuration of reference trajectory 7 and allows to achieve good results.…”

Section: Introductionmentioning

confidence: 99%

Improving the ride comfort of full car model with a decoupling intelligent model free controller

Haddar

Bouslema

Başlamışlı

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part D:

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A new technique of active control is presented for enhancing the dynamic responses of full car systems with bias to ride comfort performance. A seven degrees of freedom full car model is used, and its performance is evaluated on a bump road and random road. The proposed scheme is a combination between traditional controller design methods with an algebraic estimator of perturbations that will be eliminated online. From the inputs and the outputs signals, the unmodeled phenomenon can be estimated and be subtracted for ensuring the proper functioning of the system. The precise mathematical model of the system is not required for the implementation of the control scheme and is replaced by ultra-local models. Furthermore, the effectiveness of the algebraic estimator of road profile is introduced for applying the excitation sources of the reference generator. The road profiles in front of the vehicle are estimated separately from the rear road profiles. The ride comfort is improved progressively with the novel controller configuration by 83% from the passive case. Further, pitching and rolling fluctuations are reduced by 80% and 85% respectively. The numerical simulations illustrate the effectiveness and the robustness against vehicle body mass deviation and nonlinear actuator saturation of the proposed control method compared to passive and Active Disturbance Rejection Controller based on Input Decoupling Transformation.

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A Comparison of Quarter, Half and Full Car Models for Predicting Vibration Attenuation of an Occupant in a Vehicle

Cited by 17 publications

References 21 publications

Design and Performance Assessment of Adaptive Harmonic Control for a Half‐Car Active Suspension System

Design and Performance Assessment of Adaptive Harmonic Control for a Half‐Car Active Suspension System

Modelling and Dynamic Analysis of a Vehicle

Improving the ride comfort of full car model with a decoupling intelligent model free controller

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