Development and testing of a wearable passive lower-limb support exoskeleton to support industrial workers

Yan, Zefeng; Han, Bin; Du, Zihao; Huang, Tiantian; Bai, Ou; Peng, Ansi

doi:10.1016/j.bbe.2020.12.010

Cited by 43 publications

(30 citation statements)

References 26 publications

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“…Automatic tunable assistive squat height is a key function because it allows a lower-limb exoskeleton to adapt to different tasks/postures and reduces personnel operation [18]. Usually, the passive lower-limb exoskeleton integrates manual adjustment buttons to change the support of the lower limb exoskeleton at different squat heights, such as CC [29] and SIAT [30]; other device, instead, need to be reassembled, because it only provide specific assistive squat height, like the LegX [31] and CEA-LIST [32], therefore the user has to take off the exoskeleton to change the configuration. Contextually, the possibility of actively and automatically changing the assisted squat height can improve the availability and user acceptance of the exoskeleton in practical application scenarios [33].…”

Section: A Design Feature Of the Exoskeletonmentioning

confidence: 99%

Design and Experimental Evaluation of a Lower-Limb Exoskeleton for Assisting Workers With Motorized Tuning of Squat Heights

Zhu

Song

et al. 2022

IEEE Trans. Neural Syst. Rehabil. Eng.

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This paper presents the E-LEG, a novel semi-passive lower-limb exoskeleton for worker squatting assistance, with motorized tuning of the assistive squatting height. Compared with other passive industrial exoskeletons for the lower-limbs, the E-LEG presents novel design features namely inertial sensor for measuring the tilt angle of thigh and the novel electromagnetic switch for adjusting squat height. These features could enhance the effectiveness of the system. In addition to the introduction to exoskeleton design, this paper also reports the systematic experimental evaluation of human subjects. With the assistance of different conditions, the variability of muscular activity was evaluated in long-term static squatting task. The set of metrics to evaluate the effect of the device included leg muscle activity, plantar pressure fluctuation, plantar pressure center fluctuation and gait angles. Results show that the exoskeleton can reduce the muscular activity of the user during squatting, and it will have little affect the normal gait of the user during walking. In this study, we found that the E-LEG exoskeleton has potential effectiveness in reducing the muscular strain on long-term continuous squatting activities.

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Section: A Design Feature Of the Exoskeletonmentioning

confidence: 99%

Design and Experimental Evaluation of a Lower-Limb Exoskeleton for Assisting Workers With Motorized Tuning of Squat Heights

Zhu

Song

et al. 2022

IEEE Trans. Neural Syst. Rehabil. Eng.

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“…Research findings Bridger et al [47] Influence of the exoskeleton on the lower limbs when squatting Capitani et al [48] Developing an exoskeleton to help construction workers Elisheba et al [41] Design a chairless chair to reduce back pain in workers Ippolito [49] Optimizing the workplace using integrated exoskeleton technology Irawan [50] Design and manufacture chairless chairs based on local components Kurnia [51] Carry out the design and manufacture of chairless chair prototypes Luger et al [42], [43] Simulates the physical load, posture, and discomfort of using an exoskeleton in industrial workers Mogare et al [52] Develop a chairless chair that can be used by workers to work in a sitting and standing position Siddha et al [53] Develop a chairless chair to reduce musculoskeletal disorder in the industrial field Yan et al [54] Developing an exoskeleton to help workers in an industry Zhu et al [36] Classifying exoskeletons that can be used in various types of work https://oamjms.eu/index.php/mjms/index for Education (LPDP) for domestic master degree of Indonesian education scholarships (BPI) under number 0693/J5.2.3./BPI.06/10/2021.…”

Section: Authorsmentioning

confidence: 99%

Chairless Chairs for Orthopedic Surgery Purpose – A Literature Review

Santoso

Sugiharto

Mughni

et al. 2022

Open Access Maced J Med Sci

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Musculoskeletal disorders are often found in various types of work, including surgeons. Standing working position is immobile and rigid when performing surgical operations. The equipment used is less ergonomic which is the main parameter. The surgeon profession belongs to the category of the high-risk profession and has the potential to experience musculoskeletal disorders. Surgeons who suffer musculoskeletal disorders sense disease start from mild-to-severe due to the muscles receiving static loads frequently in the long-term. The emergence of musculoskeletal disorders can be caused by working environment conditions and standing position while working, causing injury to joints, vertebral discs, nerves, cartilage, tendons, and muscles. This paper describes in extensive the potential for reducing musculoskeletal problems with the use of a chairless chair for surgeons in carrying out operations. Musculoskeletal problems in surgery and the use of chairless chairs have been further explored to close the existing research gap.

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“…Many electromyography (EMG) studies have shown a reduction of muscle loads associated with wearing a passive exoskeleton, which is practical to use in the industrial and academic fields [14][15][16]. Kim et al [14] showed that wearing an upper-limb exoskeleton decreases the load of shoulder muscles (middle deltoid and anterior deltoid).…”

Section: Introductionmentioning

confidence: 99%

“…Pillai et al [15] showed that when performing bolting tasks at the height of the hip and knee, wearing a lower-limb exoskeleton decreases the EMG amplitude of the lower-limb muscles (rectus femoris and tibialis anterior) and lumbar muscle (erector spinae). Yan et al [16] showed that wearing the lower-limb exoskeleton when performing an assembly task from a squatting posture decreases the average muscle amplitude of the lower-limb muscles (rectus femoris, biceps femoris, vastus lateralis, and vastus medialis) by 71.5%.…”

Section: Introductionmentioning

confidence: 99%

Ergonomic Assessment of a Lower-Limb Exoskeleton through Electromyography and Anybody Modeling System

Kong

Choi

Cho

et al. 2022

IJERPH

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The aim of this study was to determine the muscle load reduction of the upper extremities and lower extremities associated with wearing an exoskeleton, based on analyses of muscle activity (electromyography: EMG) and the AnyBody Modeling System (AMS). Twenty healthy males in their twenties participated in this study, performing bolting tasks at two working heights (60 and 85 cm). The muscle activities of the upper trapezius (UT), middle deltoid (MD), triceps brachii (TB), biceps brachii (BB), erector spinae (ES), biceps femoris (BF), rectus femoris (RF), and tibialis anterior (TA) were measured by EMG and estimated by AMS, respectively. When working at the 60 cm height with the exoskeleton, the lower extremity muscle (BF, RF, TA) activities of EMG and AMS decreased. When working at the 85 cm height, the lower extremity muscle activity of EMG decreased except for TA, and those of AMS decreased except for RF. The muscle activities analyzed by the two methods showed similar patterns, in that wearing the exoskeleton reduced loads of the lower extremity muscles. Therefore, wearing an exoskeleton can be recommended to prevent an injury. As the results of the two methods show a similar tendency, the AMS can be used.

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Development and testing of a wearable passive lower-limb support exoskeleton to support industrial workers

Cited by 43 publications

References 26 publications

Design and Experimental Evaluation of a Lower-Limb Exoskeleton for Assisting Workers With Motorized Tuning of Squat Heights

Design and Experimental Evaluation of a Lower-Limb Exoskeleton for Assisting Workers With Motorized Tuning of Squat Heights

Chairless Chairs for Orthopedic Surgery Purpose – A Literature Review

Ergonomic Assessment of a Lower-Limb Exoskeleton through Electromyography and Anybody Modeling System

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