Road Test Simulation Technology in Light Vehicle Development and Durability Evaluation

Xu, Peijun; Wong, Dan; LeBlanc, P A; Peticca, Gerry

doi:10.4271/2005-01-0854

Cited by 24 publications

(5 citation statements)

References 24 publications

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“…ISO 2631-1 standard summarizes frequency weighting factors for different direction and different comfort levels. With the help of this weighting factors and Equation1, the weighted absorbed power is calculated as shown in this equation (2) For a human model having n body segments, initially the absorbed power is calculated for individual body segment and the total unweighted absorbed power is calculated by taking summation of individual segment absorbed power. This is shown in Equation 3.…”

Section: Absorbed Power and Fatigue Predictionmentioning

confidence: 99%

“…The ride comfort is influenced by the exposure duration, amplitude, and frequency of vibration to a human body [1].While seated, the human body is The most sensitive vibrations of the human body are at 4-10 Hz in vertical direction and 0.5-3 Hz in horizontal direction. Engineers evaluate the ride comfort on the road or in a lab road test simulator [2].The human body can be considered as a dynamic system whose mechanical properties vary with respect to time and body components.…”

Section: Introductionmentioning

confidence: 99%

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An Improved Human Biodynamic Model Considering the Interaction between Feet and Ground

Zhang

Jin

et al. 2015

SAE Int. J. Commer. Veh.

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Nowadays, studying the human body response in a seated position has attracted a lot of attention as environmental vibrations are transferred to the human body through floor and seat. This research has constructed a multi-body biodynamic human model with 17 degrees of freedom (DOF), including the backrest support and the interaction between feet and ground. Three types of human biodynamic models are taken into consideration: the first model doesn't include the interaction between the feet and floor, the second considers the feet and floor interaction by using a high stiffness spring, the third one includes the interaction by using a soft spring. Based on the whole vehicle model, the excitation to human body through feet and back can be obtained by ride simulation. The simulation results indicate that the interaction between feet and ground exerts non-negligible effect upon the performance of the whole body vibration by comparing the three cases.

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Section: Absorbed Power and Fatigue Predictionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An Improved Human Biodynamic Model Considering the Interaction between Feet and Ground

Zhang

Jin

et al. 2015

SAE Int. J. Commer. Veh.

View full text Add to dashboard Cite

show abstract

“…The most successful commercial applications of the reproduction system for the random vibration are RPC launched by MTS Corp. in 1977 [3], and TWR (time waveform replication) of LMS Corp. [4,5], in which TWR is nowadays mainly used in MAST (multi-axial simulation table), thus RPC is not only used in MAST but also used in a RTS (road test simulator) [6]. There are other applications of road reproduction experiment as well, including ITFC (Iterative Transfer Function Compensation) launched by Schehck Corp. in 1979, and IDC (Iterative Deconvolution Control) launched by Faithurst Corp. in 1987.…”

Section: Introductionmentioning

confidence: 99%

Convergence Optimization and Verification for Single-Channel Remote Parameter Control of a Nonlinear System

Zhang

2019

Applied Sciences

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In this paper, the theory of RPC (remote parameter control) iteration process of linear situation without and with iteration coefficient as well as nonlinear situation with coefficient is analyzed. The influence of iteration coefficient on iterative convergence control condition is analyzed. Two kinds of optimized control method for iteration coefficient based on the system transfer function estimation are proposed. A lightweight motorcycle and electro-hydraulic servo road vibration test bench are used to verify the feasibility of the optimized control methods for the reproduction of road profiles of SISO (single-input, single-output) system. According to the experiment result, which is the RMS (root mean square) of the NSRE (normalized spectrum of response error) of system, the convergent precision, convergent speed and iteration stability are discussed to present the advantage and disadvantage of the optimized control methods. Compared with three commonly used manual methods, the result shows the rapidity and stability of optimized control methods.

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“…With the rapid development and update of the vehicle, compared with the real vehicle driving test [1], the vehicle road simulation test [2] and virtual road test [3] have attracted more and more attention in automotive engineering field in recent years with the advantages of time-saving, low costs, high accuracy, repeatability, controllability, and so forth.…”

Section: Introductionmentioning

confidence: 99%

Research on 3D Modeling Method of Cobblestone Road Based on Geometric Characteristics

Feng

Cui

et al. 2018

Mathematical Problems in Engineering

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Based on the analysis of the geometric characteristics, distribution characteristics, and constraints of the cobblestone road, a three-dimensional (3D) parametric road modeling method based on geometric characteristics is proposed. The cobblestone model is established by the exponential oval equation, and the cobblestones distribution is determined by Monte Carlo stochastic search method. Then the 3D theoretical model of cobblestone road is obtained. To veritably simulate the cobblestone road, a generated 3D random road is fusing with the 3D cobblestone road model by alternating values, and the comparison between the real and modeling cobblestone roads is done in space domain and PSD curves. Then based on the establishment of the standard vehicle vibration model, the influences of the key geometric parameters of the cobblestone road on the vehicle vibration are analyzed by using the evaluation indices of the IRI and the RMS of the vehicle body acceleration. The proposed method can be extended to the 3D modeling of almost all strengthened test roads such as Belgian road, fish-scale pits road, ripple tracks, and washboard road and provides a 3D road modeling method with adjustable parameters, authenticity, and accuracy for the comprehensive construction of vehicle virtual test field.

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Road Test Simulation Technology in Light Vehicle Development and Durability Evaluation

Cited by 24 publications

References 24 publications

An Improved Human Biodynamic Model Considering the Interaction between Feet and Ground

An Improved Human Biodynamic Model Considering the Interaction between Feet and Ground

Convergence Optimization and Verification for Single-Channel Remote Parameter Control of a Nonlinear System

Research on 3D Modeling Method of Cobblestone Road Based on Geometric Characteristics

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