Seat-to-Head Transmissibility and Reading\\ Discomfort of the Seated Subjects Exposed to Whole Body Vibration

Kumara, Vikas; Saran, V. H.

doi:10.20855/ijav.2016.21.1396

Cited by 4 publications

(3 citation statements)

References 29 publications

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“…Automotive Seating Discomfort Questionnaire [29] and Automotive Seating Comfort Survey [30] are two official questionnaires related to comfort. A large number of studies on passenger comfort evaluation are based on questionnaires, subjects are asked to make subjective evaluation on riding comfort, and finally establish the relationship between passengers' subjective comfort and vehicle motion parameters [31][32][33][34].…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Motion Sickness and the Lack of Comfort in Car Passengers

et al. 2022

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Advanced driving assistance systems (ADAS) are primarily designed to increase driving safety and reduce traffic congestion without paying too much attention to passenger comfort or motion sickness. However, in view of autonomous cars, and taking into account that the lack of comfort and motion sickness increase in passengers, analysis from a comfort perspective is essential in the future car investigation. The aim of this work is to study in detail how passenger’s comfort evaluation parameters vary depending on the driving style, car or road. The database used has been developed by compiling the accelerations suffered by passengers when three drivers cruise two different vehicles on different types of routes. In order to evaluate both comfort and motion sickness, first, the numerical values of the main comfort evaluation variables reported in the literature have been analyzed. Moreover, a complementary statistical analysis of probability density and a power spectral analysis are performed. Finally, quantitative results are compared with passenger qualitative feedback. The results show the high dependence of comfort evaluation variables’ value with the road type. In addition, it has been demonstrated that the driving style and vehicle dynamics amplify or attenuate those values. Additionally, it has been demonstrated that contributions from longitudinal and lateral accelerations have a much greater effect in the lack of comfort than vertical ones. Finally, based on the concrete results obtained, a new experimental campaign is proposed.

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Section: Introductionmentioning

confidence: 99%

Analysis of the Motion Sickness and the Lack of Comfort in Car Passengers

et al. 2022

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“…There are two standard indexes usually used for evaluating the ride comfort of vehicle: root-mean-square (RMS) value and vibration dose value (VDV). The RMS value of acceleration is the square root of the mean value which obtained from the integration of the squared value of the frequency-weighted acceleration (a w (t)) over a certain period of time (T), and VDV used exponent of 4 to instead of 2 [29,30],…”

Section: Fitness Functionmentioning

confidence: 99%

Experimental study on shock control of a vehicle semi-active suspension with magneto-rheological damper

Du¹,

Yu²,

Fu³

et al. 2020

Smart Mater. Struct.

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During driving process, the impact from the road, such as pothole or bump can deteriorate the performance of the vehicle, and increase the driving dangerousness and health risk of drivers/passengers due to high energy and short time. The magneto-rheological (MR) intelligent suspension plays an important role in improving the ride comfort of vehicle, which can reduce the impact transmitted from the road. In consideration of different impact application induced by different driving speed, an adaptive skyhook control (ASC) based on improved Genetic Algorithm (GA) is proposed in this paper. Vibration dose value (VDV) of vertical acceleration of floor at driver's position is selected as the object function for improved GA to obtain the optimal skyhook gain coefficients under different driving speeds. And then the adaptive law is formulated by using table lookup method. The road test for the B segment car installed with MR dampers is undertaken to verify the effectiveness of the designed controller. The experimental results demonstrate that the reduction of VDV and peak value of vertical acceleration with ASC is always more than that with traditional skyhook controller. Results indicate that the energy spectrum density amplitude of using ASC algorithm is lower than that with skyhook controller, when the driving speed is less than or equal to 30 km h −1 .

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“…Researchers in the field of WBV have classified the vibration assessment measures into three categories namely: the mechanical impedance, apparent mass and seat to head transmissibility [5][6][7]. These function categories are used to assess the human body subjected to the vibration.…”

Section: Introductionmentioning

confidence: 99%

A Systematic Literature Review of Various Control Techniques for Active Seat Suspension Systems

Al-Ashmori

Wang

2020

Applied Sciences

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Drivers of heavy trucks are exposed to large amounts of vibration which can lead to serious health risks. Many suspension systems/methods can be used to isolate these transmitted vibrations, such as vehicle suspension systems, cabin suspension systems and seating suspension systems. The central idea of the work is to identify the research gaps and raise our future research questions in this specific area. The novelty of this paper is proposing a model predictive controller for active vibration control of seating suspension systems. A systematic literature review of the existing work of the vibration control of seating suspension systems has been conducted. Various control techniques that are used in the seating suspension systems have been summarized and evaluated. This paper focusses on the biodynamic model of the driver and seat for the first step needed in the design of the seating suspension system. Then, it illustrates the different types of the system vibration controls and their performance evaluation methods. At the end, the paper details several active seating suspension systems including their actuation system structures and control algorithms which are used in the heavy vehicle trucks.

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Seat-to-Head Transmissibility and Reading\\ Discomfort of the Seated Subjects Exposed to Whole Body Vibration

Cited by 4 publications

References 29 publications

Analysis of the Motion Sickness and the Lack of Comfort in Car Passengers

Analysis of the Motion Sickness and the Lack of Comfort in Car Passengers

Experimental study on shock control of a vehicle semi-active suspension with magneto-rheological damper

A Systematic Literature Review of Various Control Techniques for Active Seat Suspension Systems

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