Evaluation of physical workload during work behavior for work environment design from biomechanical perspective: a case study in initial orientation selection of work object for manual handling tasks.
To improve workability, designing the work environment by considering physical workload can be effective. This paper proposes a new quantitative evaluation method of physical workload during work behavior, which uses quaternion and joint torque ratio. As an indicator of physical workload, the propos...
| Publicado en: | Theoretical Issues in Ergonomics Science Vol. 22; no. 1; pp. 15 - 32 |
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| Autores principales: | , , |
| Formato: | equations & formulas research tables/charts Journal Article |
| Publicado: |
Taylor & Francis Ltd
Jan2021
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=147905044&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 147905044 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 1463922X BDX jtl: Theoretical Issues in Ergonomics Science issn: 1463922X maglogo: Y pubinfo: dt: Jan2021 vid: 22 iid: 1 pid: 377 pub: Taylor & Francis Ltd place: Philadelphia, Pennsylvania artinfo: ui: 147905044 145571237 147905044 147905044 10.1080/1463922X.2020.1749959 147905044 ppf: 15 ppct: 17 formats: tig: atl: Evaluation of physical workload during work behavior for work environment design from biomechanical perspective: a case study in initial orientation selection of work object for manual handling tasks. aug: au: Kuramoto, Akisue Hiranai, Kazuki Seo, Akihiko affil: Tokyo Metropolitan University, Hino, Tokyo, Japan sug: subj: Biomechanics Workload Measurement Work Environment Job Performance Task Performance and Analysis Human Work Capacity Evaluation Torque Rotation Posture Electromyography Ergonomics ab: To improve workability, designing the work environment by considering physical workload can be effective. This paper proposes a new quantitative evaluation method of physical workload during work behavior, which uses quaternion and joint torque ratio. As an indicator of physical workload, the proposed method calculated a dimensionless value based on joint rotation angle, joint rotation axis angle, and joint torque ratio. Joint rotation angle and joint rotation axis angle are angle changes in the joint and its rotational axis from those in the previous sampling, respectively. These angles were calculated using quaternions. Joint torque ratio was calculated using a three-dimensional rigid link model that simulates the human body. The applicability of the proposed method was examined in several conditions of manual handling tasks set by varying the initial pose of the work object. In the experiments, posture and electromyogram (EMG) of the upper limb were measured. The results showed that the proposed method can evaluate workability of initial orientation of work objects on biomechanical perspective, whereas EMG could not. pubtype: Academic Journal doctype: equations & formulas research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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