Study of the dynamic behaviour of a human driver coupled with a vehicle

Reddy, Panta Srihari; Ramakrishna, Avasarala; Ramji, K.

doi:10.1177/0954407014537642

Cited by 13 publications

(15 citation statements)

References 17 publications

(34 reference statements)

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“…Human body can be treated as various degree of freedom vibration systems [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] . The reason for us to use this simplified 5-DOF vertical human body vibration model is that this model can capture the most important features of human's perception and response to vibration in a human-vehicle system, while the model itself is simple to implement in a remote portable or distributed environment in Industry 4.0 framework.…”

Section: Simplified 5-dof Human Body Vibration Modelmentioning

confidence: 99%

“…In 2008, E Zhang studied the different vibration parameters of the human body vibration characteristics [15] . Recently, Reddy P S et al proposed a 15-DOF human body model to include the left and right lower and upper arms, as well as neck in the human-vehicle vibration model [16] . Ten subjects were tested in whole body vibration with five frequencies in vertical direction, and a hybrid Polaris spectra system was used to obtain the seat to head transmissibility [17] .…”

Section: Introductionmentioning

confidence: 99%

“…Some of the research concentrated on human's perception [3,4,5] , while others emphasized on the sitting posture [6,9] , and many different human body vibration models were proposed and human whole body vibration test conducted [11][12][13][14][15][16][17][18] . With the rapid development of computational power, simulation software and VR (Virtual Reality) technology, it is possible to integrate all the simulation and modelling aspects together, backed up with a limited number of human whole body vibration test and questionnaire results as validation, to provide a simulation method for rapidly evaluating the sitting posture body comfort of human-vehicle systems.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Digital evaluation of sitting posture comfort in human-vehicle system under industry 4.0 framework

Qing

Kang

et al. 2016

Chin. J. Mech. Eng.

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Most of the previous studies on the vibration ride comfort of the human-vehicle system were focused only on one or two aspects of the investigation. This paper proposed a hybrid approach which integrates all kinds of investigation methods in real environment and virtual environment. The real experimental environment includes the WBV (whole body vibration) test, questionnaires for human subjective sensation and motion capture. The virtual experimental environment includes the theoretical calculation on simplified 5-DOF human body vibration model, the vibration simulation and analysis within ADAMS/ Vibration TM module, and the digital human biomechanics and occupational health analysis in Jack software. While the real experimental environment provided realistic and accurate test results, it also serves as core and validation for the virtual experimental environment. The virtual experimental environment takes full advantages of current available vibration simulation and digital human modelling software, and makes it possible to evaluate the sitting posture comfort in a human-vehicle system with various human anthropometric parameters. How this digital evaluation system for car seat comfort design is fitted in the Industry 4.0 framework is also proposed.

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Section: Simplified 5-dof Human Body Vibration Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Digital evaluation of sitting posture comfort in human-vehicle system under industry 4.0 framework

Qing

Kang

et al. 2016

Chin. J. Mech. Eng.

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“…A 15-degree-of-freedom male driver model, which includes 14 body parts, has been developed for vibration evaluation, and its parameters, such as stiffness and damping, have been determined. 12,13 Loutridis et al 14 found that when tractors transit on asphalt roads, drivers traveling at a constant speed were less comfortable than those performing regular pedal operations. By contrast, when transiting rough roads, tractor drivers traveling at a constant speed were more comfortable than those performing regular pedal operations.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of tractor driving comfort according to the steering angle and speed using a virtual prototype

Jiang

Zhang

et al. 2021

Proceedings of the Institution of Mechanical Engineers, Part D:

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As tractors mainly transit rural roads, drivers can suffer from harmful vibrations transmitted though their seats. Thus, the driving comfort in tractors with agricultural equipment should be evaluated. To investigate the effects of forward motion and front-wheel steering on the driving comfort of two-wheel-drive tractors with agricultural equipment, we establish a man–machine–road virtual prototype for simulations and validate it experimentally. First, a tractor that has suspended agricultural equipment and is operating at front-wheel steering angles of 0°, 12°, 24°, and 36° is driven on a random level-D road. Simultaneously, the vibration accelerations experienced by the driver are obtained along the X, Y, and Z axes with the coordinate system defined according to the ISO 2631-1 standard. The combined weighted root-mean-square (RMS) acceleration corresponding to the driver’s whole-body vibration increases from 0.205 to 0.909 m/s2 when increasing the steering angle. Then, considering the forward speed as the variable, the front-wheel steering angle is set at 30°, and the vibration accelerations experienced by the driver are obtained when the tractor travels at 4, 5, and 6 km/h on a random level-D road. The combined weighted RMS acceleration corresponding to the driver’s whole-body vibration increases from 0.68 to 1.03 m/s2 when increasing the speed. Therefore, we found that the velocity of a tractor should be reduced while steering, and excessively large front-wheel steering angles should be avoided to increase driving comfort.

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“…Some scholars have established 15-DOF (degree of freedom) human body model and 7-DOF vehicle model to study the influence of 0-40 Hz vibration frequency on human comfort. 1 Some researchers have established vibration analysis models for pedestrians and vehicles to evaluate driving comfort in different vibration conditions. 2,3 In order to improve the ride comfort of some specially equipped cabs, scholars calculated the natural frequency and vibration characteristics of the whole vehicle through experiments, and reduced the frequency and vibration in their designs.…”

Section: Introductionmentioning

confidence: 99%

Evaluation and optimization of vehicle pedal comfort based on biomechanics

Chen

Yang

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part D:

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Existing research on the manipulation comfort of the cab pedal generally focuses on the completion of the pedal movement when a vehicle is at rest, with certain data collected for analysis. This paper, by taking passenger vehicles in China as the study object and in view of the actual road conditions in China and the Chinese body size, attempts to solve the problem of muscle redundancy through the maximum/minimum optimization model of muscle activation. The road test was carried out on a typical pavement in a Chinese city. The parameters of pedal stroke, pedal force, and typical Electromyography signal (EMG) signal of drivers’ lower limbs during driving were obtained, from which muscle activation degree was calculated. The obtained experimental data were used as external driving one to simulate and analyze the pedal comfort under the layout of different human percentile and different pedal parameters in an aim to obtain the optimal value. The results indicate that the difference in pedal strokes, pedal preload, pedal resistance coefficients, seat heights, and H-point distances can have a noticeable effect on muscle activation. Taking a 95th-percentile accelerator pedal as an example, with the optimal values of each parameter selected (pedal preload: 8.2 N, pedal resistance coefficient: 2.55, seat height: 0.45 m and H-point distance: 0.86 m), as the pedal strokes increase, muscle activation shows a trend of increase after initial decrease. In the common stroke of a pedal after optimization, the degree of muscle activation is significantly lower than that before optimization, indicating a decrease in muscle fatigue.

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Study of the dynamic behaviour of a human driver coupled with a vehicle

Cited by 13 publications

References 17 publications

Digital evaluation of sitting posture comfort in human-vehicle system under industry 4.0 framework

Digital evaluation of sitting posture comfort in human-vehicle system under industry 4.0 framework

Evaluation of tractor driving comfort according to the steering angle and speed using a virtual prototype

Evaluation and optimization of vehicle pedal comfort based on biomechanics

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