Evidence map›Paper›PMID 24727501›Full record

ArticleSensors (Basel, Switzerland)2014

An upper-limb power-assist exoskeleton using proportional myoelectric control.

Zhichuan Tang, Kejun Zhang, Shouqian Sun, Zenggui Gao, Lekai Zhang, Zhongliang Yang

Abstract read
In one paragraph

Article in Sensors (Basel, Switzerland), 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed, 3 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

35 citing papers in PubMed, 3 syntheses or guidelines pooled it.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

6 authors.

Zhichuan TangCollege of Computer Science and Technology, Zhejiang University, Hangzhou 310027, China. ttzzcc@163.com.
Kejun ZhangCollege of Computer Science and Technology, Zhejiang University, Hangzhou 310027, China. channy@zju.edu.cn.
Shouqian SunCollege of Computer Science and Technology, Zhejiang University, Hangzhou 310027, China. ssq@zju.edu.cn.
Zenggui GaoCollege of Computer Science and Technology, Zhejiang University, Hangzhou 310027, China. gzg@zju.edu.cn.
Lekai ZhangCollege of Computer Science and Technology, Zhejiang University, Hangzhou 310027, China. zlkzhang@gmail.com.
Zhongliang YangCollege of Mechanical Engineering, Donghua University, Shanghai 201620, China. yzl@dhu.edu.cn.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We developed an upper-limb power-assist exoskeleton actuated by pneumatic muscles. The exoskeleton included two metal links: a nylon joint, four size-adjustable carbon fiber bracers, a potentiometer and two pneumatic muscles. The proportional myoelectric control method was proposed to control the exoskeleton according to the user's motion intention in real time. With the feature extraction procedure and the classification (back-propagation neural network), an electromyogram (EMG)-angle model was constructed to be used for pattern recognition. Six healthy subjects performed elbow flexion-extension movements under four experimental conditions: (1) holding a 1-kg load, wearing the exoskeleton, but with no actuation and for different periods (2-s, 4-s and 8-s periods); (2) holding a 1-kg load, without wearing the exoskeleton, for a fixed period; (3) holding a 1-kg load, wearing the exoskeleton, but with no actuation, for a fixed period; (4) holding a 1-kg load, wearing the exoskeleton under proportional myoelectric control, for a fixed period. The EMG signals of the biceps brachii, the brachioradialis, the triceps brachii and the anconeus and the angle of the elbow were collected. The control scheme's reliability and power-assist effectiveness were evaluated in the experiments. The results indicated that the exoskeleton could be controlled by the user's motion intention in real time and that it was useful for augmenting arm performance with neurological signal control, which could be applied to assist in elbow rehabilitation after neurological injury.

Indexed as

Electric Power SuppliesAdultElbow JointElectromyographyHumansMaleMusclesNeural Networks, ComputerRegression AnalysisUpper Extremity

Identifiers

PMID24727501
PMCPMC4029719

What OpenQuestion holds

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Read underepoch 390

Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.