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Using Hand Grip Force as a Correlate of Longitudinal Acceleration Comfort for Rapid Transit Trains.

Guo B, Gan W, Fang W - Sensors (Basel) (2015)

Bottom Line: Longitudinal acceleration comfort is one of the essential metrics used to evaluate the ride comfort of train.The aim of this study was to investigate the effectiveness of using hand grip force as a correlate of longitudinal acceleration comfort of rapid transit trains.The feasibility and practicably of the model was verified by a field test.

View Article: PubMed Central - PubMed

Affiliation: State Key Laboratory of Rail Traffic Control and Safety, Beijing Jiaotong University, No.3 Shang Yuan Cun, Beijing 100044, China. byguo@bjtu.edu.cn.

ABSTRACT
Longitudinal acceleration comfort is one of the essential metrics used to evaluate the ride comfort of train. The aim of this study was to investigate the effectiveness of using hand grip force as a correlate of longitudinal acceleration comfort of rapid transit trains. In the paper, a motion simulation system was set up and a two-stage experiment was designed to investigate the role of the grip force on the longitudinal comfort of rapid transit trains. The results of the experiment show that the incremental grip force was linearly correlated with the longitudinal acceleration value, while the incremental grip force had no correlation with the direction of the longitudinal acceleration vector. The results also show that the effects of incremental grip force and acceleration duration on the longitudinal comfort of rapid transit trains were significant. Based on multiple regression analysis, a step function model was established to predict the longitudinal comfort of rapid transit trains using the incremental grip force and the acceleration duration. The feasibility and practicably of the model was verified by a field test. Furthermore, a comparative analysis shows that the motion simulation system and the grip force based model were valid to support the laboratory studies on the longitudinal comfort of rapid transit trains.

No MeSH data available.


Related in: MedlinePlus

Incremental grip force at each acceleration or deceleration, ***p < 0.0001.
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sensors-15-15755-f008: Incremental grip force at each acceleration or deceleration, ***p < 0.0001.

Mentions: The six working conditions, shown in Table 2, could be divided into three groups according to the absolute values of the acceleration and deceleration. Paired t-tests were used to compare the grip force of each group. There was no significant different in the grip force for micro-acceleration (M = 24.9773, SD = 3.4056) and micro-deceleration (M = 25.1027, SD = 3.2506); t(14) = −0.135, p = 0.895, or for slow acceleration (M = 52.0513, SD = 6.7028) and slow deceleration (M = 53.5540, SD = 10.0233); t(14) = −1.027, p = 0.322, or for hard acceleration (M = 86.4893, SD = 11.7320) and hard deceleration (M = 84.7387, SD = 9.2731); t(14) = 0.794, p = 0.441. Tukey’s HSD showed that the incremental grip force were significantly different between each acceleration and each deceleration level; F(5, 84) = 169.347, p < 0.0001, as shown in Figure 8. The result indicated that the acceleration and deceleration values had a significant effect on the grip force, while the form of acceleration or deceleration had no significant effect on it.


Using Hand Grip Force as a Correlate of Longitudinal Acceleration Comfort for Rapid Transit Trains.

Guo B, Gan W, Fang W - Sensors (Basel) (2015)

Incremental grip force at each acceleration or deceleration, ***p < 0.0001.
© Copyright Policy
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4541853&req=5

sensors-15-15755-f008: Incremental grip force at each acceleration or deceleration, ***p < 0.0001.
Mentions: The six working conditions, shown in Table 2, could be divided into three groups according to the absolute values of the acceleration and deceleration. Paired t-tests were used to compare the grip force of each group. There was no significant different in the grip force for micro-acceleration (M = 24.9773, SD = 3.4056) and micro-deceleration (M = 25.1027, SD = 3.2506); t(14) = −0.135, p = 0.895, or for slow acceleration (M = 52.0513, SD = 6.7028) and slow deceleration (M = 53.5540, SD = 10.0233); t(14) = −1.027, p = 0.322, or for hard acceleration (M = 86.4893, SD = 11.7320) and hard deceleration (M = 84.7387, SD = 9.2731); t(14) = 0.794, p = 0.441. Tukey’s HSD showed that the incremental grip force were significantly different between each acceleration and each deceleration level; F(5, 84) = 169.347, p < 0.0001, as shown in Figure 8. The result indicated that the acceleration and deceleration values had a significant effect on the grip force, while the form of acceleration or deceleration had no significant effect on it.

Bottom Line: Longitudinal acceleration comfort is one of the essential metrics used to evaluate the ride comfort of train.The aim of this study was to investigate the effectiveness of using hand grip force as a correlate of longitudinal acceleration comfort of rapid transit trains.The feasibility and practicably of the model was verified by a field test.

View Article: PubMed Central - PubMed

Affiliation: State Key Laboratory of Rail Traffic Control and Safety, Beijing Jiaotong University, No.3 Shang Yuan Cun, Beijing 100044, China. byguo@bjtu.edu.cn.

ABSTRACT
Longitudinal acceleration comfort is one of the essential metrics used to evaluate the ride comfort of train. The aim of this study was to investigate the effectiveness of using hand grip force as a correlate of longitudinal acceleration comfort of rapid transit trains. In the paper, a motion simulation system was set up and a two-stage experiment was designed to investigate the role of the grip force on the longitudinal comfort of rapid transit trains. The results of the experiment show that the incremental grip force was linearly correlated with the longitudinal acceleration value, while the incremental grip force had no correlation with the direction of the longitudinal acceleration vector. The results also show that the effects of incremental grip force and acceleration duration on the longitudinal comfort of rapid transit trains were significant. Based on multiple regression analysis, a step function model was established to predict the longitudinal comfort of rapid transit trains using the incremental grip force and the acceleration duration. The feasibility and practicably of the model was verified by a field test. Furthermore, a comparative analysis shows that the motion simulation system and the grip force based model were valid to support the laboratory studies on the longitudinal comfort of rapid transit trains.

No MeSH data available.


Related in: MedlinePlus