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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

(a) Grip force distribution of acceleration; (b) Grip force distribution of deceleration.
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sensors-15-15755-f010: (a) Grip force distribution of acceleration; (b) Grip force distribution of deceleration.

Mentions: The results of the experiment show that the incremental grip force is linearly correlated with the acceleration. The incremental grip force increased as the acceleration increased. Figure 9 shows the linear relationship between the two variables. Figure 8 shows the incremental grip force is linearly correlation with the value of acceleration but has no correlation with the direction of the acceleration vector. In the experiment, the participants stood on the standing platform facing the right side of the train and held the handrail with their right hand. Hence, when the train accelerated, more force was imposed on the fingers of the hand, and when the train decelerated, more force was imposed on the palm of the hand (see Figure 10). Although the distribution of grip force was different between acceleration and deceleration working conditions, the participants needed use the same force to overcome the same acceleration or deceleration. In the study, we analyzed the total grip force of the entire hand. Hence, the results showed that there was the no correlation between the incremental grip force and the direction of the acceleration vector.


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

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

(a) Grip force distribution of acceleration; (b) Grip force distribution of deceleration.
© Copyright Policy
Related In: Results  -  Collection

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

sensors-15-15755-f010: (a) Grip force distribution of acceleration; (b) Grip force distribution of deceleration.
Mentions: The results of the experiment show that the incremental grip force is linearly correlated with the acceleration. The incremental grip force increased as the acceleration increased. Figure 9 shows the linear relationship between the two variables. Figure 8 shows the incremental grip force is linearly correlation with the value of acceleration but has no correlation with the direction of the acceleration vector. In the experiment, the participants stood on the standing platform facing the right side of the train and held the handrail with their right hand. Hence, when the train accelerated, more force was imposed on the fingers of the hand, and when the train decelerated, more force was imposed on the palm of the hand (see Figure 10). Although the distribution of grip force was different between acceleration and deceleration working conditions, the participants needed use the same force to overcome the same acceleration or deceleration. In the study, we analyzed the total grip force of the entire hand. Hence, the results showed that there was the no correlation between the incremental grip force and the direction of the acceleration vector.

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