{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,14]],"date-time":"2026-01-14T04:38:14Z","timestamp":1768365494880,"version":"3.49.0"},"reference-count":23,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2015,7,2]],"date-time":"2015-07-02T00:00:00Z","timestamp":1435795200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>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.<\/jats:p>","DOI":"10.3390\/s150715755","type":"journal-article","created":{"date-parts":[[2015,7,3]],"date-time":"2015-07-03T12:24:56Z","timestamp":1435926296000},"page":"15755-15771","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":4,"title":["Using Hand Grip Force as a Correlate of Longitudinal Acceleration Comfort for Rapid Transit Trains"],"prefix":"10.3390","volume":"15","author":[{"given":"Beiyuan","family":"Guo","sequence":"first","affiliation":[{"name":"State Key Laboratory of Rail Traf\ufb01c Control and Safety, Beijing Jiaotong University, No.3  Shang Yuan Cun, Beijing 100044, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Weide","family":"Gan","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Rail Traf\ufb01c Control and Safety, Beijing Jiaotong University, No.3  Shang Yuan Cun, Beijing 100044, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Weining","family":"Fang","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Rail Traf\ufb01c Control and Safety, Beijing Jiaotong University, No.3  Shang Yuan Cun, Beijing 100044, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2015,7,2]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"354","DOI":"10.1016\/j.apergo.2011.06.011","article-title":"Possibilities to improve the aircraft interior comfort experience","volume":"43","author":"Vink","year":"2012","journal-title":"Appl. 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