Article(id=1245407864299303881, tenantId=1146029695717560320, journalId=1146123166801305609, issueId=1156262727438951343, articleNumber=null, orderNo=null, doi=10.12404/j.issn.1671-1815.2403062, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1713974400000, receivedDateStr=2024-04-25, revisedDate=1717516800000, revisedDateStr=2024-06-05, acceptedDate=null, acceptedDateStr=null, onlineDate=1774857973408, onlineDateStr=2026-03-30, pubDate=1741363200000, pubDateStr=2025-03-08, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1774857973408, onlineIssueDateStr=2026-03-30, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1774857973408, creator=13701087609, updateTime=1774857973408, updator=13701087609, issue=Issue{id=1156262727438951343, tenantId=1146029695717560320, journalId=1146123166801305609, year='2025', volume='25', issue='7', pageStart='2193', pageEnd='3077', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1753604116544, creator=13701087609, updateTime=1753771263994, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1156963794699248405, tenantId=1146029695717560320, journalId=1146123166801305609, issueId=1156262727438951343, language=EN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1156963794699248406, tenantId=1146029695717560320, journalId=1146123166801305609, issueId=1156262727438951343, language=CN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=2841, endPage=2848, ext={EN=ArticleExt(id=1245407864865533957, articleId=1245407864299303881, tenantId=1146029695717560320, journalId=1146123166801305609, language=EN, title=Lower Limb Motion Recognition Based on Surface Electromyography and a CNN-LSTM Fusion Model, columnId=1156262729162810294, journalTitle=Science Technology and Engineering, columnName=Papers·Automation and Computational Technology, runingTitle=null, highlight=null, articleAbstract=
To enhance the classification accuracy of lower limb movements, this paper was introduced a hybrid recognition model based on surface electromyography (sEMG) that combines convolutional neural networks (CNN) with long short-term memory networks (LSTM). Initially, sEMG data were collected from 20 subjects performing four types of gait movements: ascending stairs, descending stairs, walking, and squatting. Subsequently, the collected sEMG data underwent preprocessing, and both time domain and frequency domain features were extracted to serve as inputs for the machine learning recognition model. The CNN-LSTM model was then constructed for lower limb action recognition and compared against the performances of CNN, LSTM, and SVM (support vector machine,)models. The results demonstrate that the CNN-LSTM model outperforms the CNN, LSTM, and SVM models by 2.16%, 8.34%, and 11.16% in accuracy, respectively, thereby proving its superior classification performance. This model provides an effective solution for enhancing lower limb motor functions, offering significant benefits for rehabilitation medical equipment and power assist devices.
, correspAuthors=Qing TAO, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, authorCompany=null, fund=null, authors=null, authorsList=Zhi-wei ZHOU, Qing TAO, Na SU, Jing-xuan LIU, Bo-wen LI, Hao PEI), CN=ArticleExt(id=1245407871136018757, articleId=1245407864299303881, tenantId=1146029695717560320, journalId=1146123166801305609, language=CN, title=基于表面肌电信号的CNN-LSTM模型下肢动作识别, columnId=1156262729783567290, journalTitle=科学技术与工程, columnName=论文·自动化技术、计算机技术, runingTitle=null, highlight=null, articleAbstract=
为了提高对下肢运动的分类准确度,提出了一种基于表面肌电信号(surface electromyography, sEMG)的卷积神经网络与长短期记忆网络融合识别模型(convolutional neural network and long short-term memory network, CNN-LSTM)。首先,采集了20名受试者进行上楼、下楼、行走和蹲起4种步态动作的sEMG;接着,对采集到的sEMG数据进行预处理,并提取了两种时域和频域特征,用作机器学习识别模型的特征输入;最后,基于预处理后肌电信号数据,构建了CNN-LSTM的下肢动作识别模型,并与CNN、LSTM和支持向量机(support vector machine, SVM)模型的性能进行对比。结果显示,CNN-LSTM模型在下肢动作识别准确率上分别比CNN、LSTM和SVM模型高出2.16%、8.34%、和11.16%,证明了其优越的分类性能。研究结论为康复医疗器械与助力器械提供了一个有效的下肢运动功能改善方案。
, correspAuthors=陶庆, authorNote=null, correspAuthorsNote=
* 陶庆(1978—),男,汉族,江苏常熟人,博士,教授。研究方向:先进设计与制造、虚拟现实技术。E-mail:
xjutao@qq.com。
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周智伟(1999—),男,汉族,新疆奎屯人,硕士研究生。研究方向:下肢动作识别、深度学习。E-mail:912918131@qq.com。
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周智伟(1999—),男,汉族,新疆奎屯人,硕士研究生。研究方向:下肢动作识别、深度学习。E-mail:912918131@qq.com。
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1 新疆大学智能制造现代产业学院, 乌鲁木齐 830017)]), AuthorCompany(id=1245407871568032125, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407864299303881, xref=2, ext=[AuthorCompanyExt(id=1245407871580615040, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407864299303881, companyId=1245407871568032125, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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2 新疆医科大学第一附属医院, 医学检验中心, 乌鲁木齐 830054)])], figs=[ArticleFig(id=1245407875472929588, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407864299303881, language=EN, label=Fig.1, caption=
Diagram of the experimental scene, figureFileSmall=evwqks+BSKx3HMDm4pvg+A==, figureFileBig=AMoDOmZkfPbW8k41X2R+yA==, tableContent=null), ArticleFig(id=1245407875569398588, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407864299303881, language=CN, label=图1, caption=
实验场景图, figureFileSmall=evwqks+BSKx3HMDm4pvg+A==, figureFileBig=AMoDOmZkfPbW8k41X2R+yA==, tableContent=null), ArticleFig(id=1245407875875582806, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407864299303881, language=EN, label=Fig.2, caption=
Sliding window segmentation diagram, figureFileSmall=BmoeRIg+2DshnbDzGWoooQ==, figureFileBig=vN1FXpUsBy6TpYBxwfUGtw==, tableContent=null), ArticleFig(id=1245407875993023330, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407864299303881, language=CN, label=图2, caption=
滑动窗口分割图, figureFileSmall=BmoeRIg+2DshnbDzGWoooQ==, figureFileBig=vN1FXpUsBy6TpYBxwfUGtw==, tableContent=null), ArticleFig(id=1245407876097880941, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407864299303881, language=EN, label=Fig.3, caption=
1DCNN model structure, figureFileSmall=54qeWm2hySg+qrOQDEb5zQ==, figureFileBig=yc1AjP1QB3Jz0TjfOxNq+g==, tableContent=null), ArticleFig(id=1245407876211127159, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407864299303881, language=CN, label=图3, caption=
1DCNN模型结构, figureFileSmall=54qeWm2hySg+qrOQDEb5zQ==, figureFileBig=yc1AjP1QB3Jz0TjfOxNq+g==, tableContent=null), ArticleFig(id=1245407876353733504, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407864299303881, language=EN, label=Fig.4, caption=
LSTM model structure, figureFileSmall=J5PpBYXK/zLUH/q0KpciFQ==, figureFileBig=9fpT0q4xEZNZdV2rcgCAdg==, tableContent=null), ArticleFig(id=1245407876492145547, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407864299303881, language=CN, label=图4, caption=
LSTM模型结构, figureFileSmall=J5PpBYXK/zLUH/q0KpciFQ==, figureFileBig=9fpT0q4xEZNZdV2rcgCAdg==, tableContent=null), ArticleFig(id=1245407876680889241, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407864299303881, language=EN, label=Fig.5, caption=
CNN-LSTM overall architecture, figureFileSmall=4gH5bE9c7K5cFh7VSHDw4Q==, figureFileBig=VGChKfXLc8j7lUrFIZyiWg==, tableContent=null), ArticleFig(id=1245407876840272804, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407864299303881, language=CN, label=图5, caption=
CNN-LSTM总体架构, figureFileSmall=4gH5bE9c7K5cFh7VSHDw4Q==, figureFileBig=VGChKfXLc8j7lUrFIZyiWg==, tableContent=null), ArticleFig(id=1245407876970296241, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407864299303881, language=EN, label=Fig.6, caption=
The loss curve of the CNN-LSTM model, figureFileSmall=FgjCF2Ysf253Qi1sK3HG3Q==, figureFileBig=HbB/PhSeveJaP5rS8v67hg==, tableContent=null), ArticleFig(id=1245407877087736764, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407864299303881, language=CN, label=图6, caption=
CNN-LSTM模型损失曲线, figureFileSmall=FgjCF2Ysf253Qi1sK3HG3Q==, figureFileBig=HbB/PhSeveJaP5rS8v67hg==, tableContent=null), ArticleFig(id=1245407877192594371, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407864299303881, language=EN, label=Fig.7, caption=
Comparison of the performance of the 4 classification models, figureFileSmall=cO2MvTGV1msJfpwilsGCsg==, figureFileBig=jq/YqIr8CaT0mBn0U9AQaQ==, tableContent=null), ArticleFig(id=1245407877347783630, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407864299303881, language=CN, label=图7, caption=
4种分类模型性能对比, figureFileSmall=cO2MvTGV1msJfpwilsGCsg==, figureFileBig=jq/YqIr8CaT0mBn0U9AQaQ==, tableContent=null), ArticleFig(id=1245407877482001365, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407864299303881, language=EN, label=Fig.8, caption=
ROC curves for 4 classification models, figureFileSmall=+xYRh8UFVWgO8D7e8xY9Vw==, figureFileBig=lbnNLb4bPshW+2Vy5CnVXQ==, tableContent=null), ArticleFig(id=1245407877603636193, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407864299303881, language=CN, label=图8, caption=
4种分类模型ROC曲线, figureFileSmall=+xYRh8UFVWgO8D7e8xY9Vw==, figureFileBig=lbnNLb4bPshW+2Vy5CnVXQ==, tableContent=null), ArticleFig(id=1245407877725271020, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407864299303881, language=EN, label=Fig.9, caption=
Confusion matrices for 4 models, figureFileSmall=nw7+SYe626OdiL9qpCn3zQ==, figureFileBig=TouK0kZTXKijNwJE0385kA==, tableContent=null), ArticleFig(id=1245407877855294455, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407864299303881, language=CN, label=图9, caption=
4种模型的混淆矩阵, figureFileSmall=nw7+SYe626OdiL9qpCn3zQ==, figureFileBig=TouK0kZTXKijNwJE0385kA==, tableContent=null), ArticleFig(id=1245407878018872319, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407864299303881, language=EN, label=Table 1, caption=
Basic information of the subject
, figureFileSmall=null, figureFileBig=null, tableContent=
| 年龄/岁 | 身高/cm | 体重/kg |
| 22~28 | 160~189 | 60~85 |
), ArticleFig(id=1245407878123728901, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407864299303881, language=CN, label=表1, caption=
受试者基本信息
, figureFileSmall=null, figureFileBig=null, tableContent=
| 年龄/岁 | 身高/cm | 体重/kg |
| 22~28 | 160~189 | 60~85 |
), ArticleFig(id=1245407878236975121, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407864299303881, language=EN, label=Table 2, caption=
Feature calculation formula
, figureFileSmall=null, figureFileBig=null, tableContent=
| 特征 | 计算公式 |
| 时域 | MAV | TMAV=1/N$\sum _{i=1}^{N}$|xi| |
| RMS | TRMS=$\sqrt{1/N\sum _{i=1}^{N}{x}_{i}^{2}}$ |
| 频域 | MPF | FMPF=${\int }_{0}^{+\infty } $fP(f)df/${\int }_{0}^{+\infty } $P(f)df |
| MF | ${\int }_{0}^{{F}_{MF}} $P(f)df=$\frac{1}{2}{\int }_{0}^{+\infty } $P(f)df |
), ArticleFig(id=1245407878383775775, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407864299303881, language=CN, label=表2, caption=
特征计算公式
, figureFileSmall=null, figureFileBig=null, tableContent=
| 特征 | 计算公式 |
| 时域 | MAV | TMAV=1/N$\sum _{i=1}^{N}$|xi| |
| RMS | TRMS=$\sqrt{1/N\sum _{i=1}^{N}{x}_{i}^{2}}$ |
| 频域 | MPF | FMPF=${\int }_{0}^{+\infty } $fP(f)df/${\int }_{0}^{+\infty } $P(f)df |
| MF | ${\int }_{0}^{{F}_{MF}} $P(f)df=$\frac{1}{2}{\int }_{0}^{+\infty } $P(f)df |
), ArticleFig(id=1245407878492827690, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407864299303881, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 网络层 | 卷积核 数目 | 卷积核 尺寸 | 步长 | 输出 维度 |
| 卷积层1 | 64 | 3×1 | 5 | 64×1 020 |
| BN1+ReLU | — | 64 | — | 64×1 020 |
| 池化层1 | 64 | 2×2 | — | 64×510 |
| 卷积层2 | 32 | 3×1 | 3 | 32×508 |
| BN2+ReLU | — | 32 | — | 32×508 |
| 池化层2 | 32 | 2×2 | — | 32×254 |
| 卷积层3 | 10 | 3×1 | 3 | 10×252 |
| BN3+ReLU | — | 10 | — | 10×252 |
| 池化层3 | 10 | 2×2 | — | 10×126 |
| 全连接层1 | 1 | 1 260 | — | 1 260×1 |
| 全连接层2 | 1 | 600 | — | 600×1 |
| 全连接层3 | 1 | 100 | | 100×1 |
), ArticleFig(id=1245407878606073908, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407864299303881, language=CN, label=表3, caption=
1DCNN模型参数配置 Table 3 1DCNN model parameter configuration
, figureFileSmall=null, figureFileBig=null, tableContent=
| 网络层 | 卷积核 数目 | 卷积核 尺寸 | 步长 | 输出 维度 |
| 卷积层1 | 64 | 3×1 | 5 | 64×1 020 |
| BN1+ReLU | — | 64 | — | 64×1 020 |
| 池化层1 | 64 | 2×2 | — | 64×510 |
| 卷积层2 | 32 | 3×1 | 3 | 32×508 |
| BN2+ReLU | — | 32 | — | 32×508 |
| 池化层2 | 32 | 2×2 | — | 32×254 |
| 卷积层3 | 10 | 3×1 | 3 | 10×252 |
| BN3+ReLU | — | 10 | — | 10×252 |
| 池化层3 | 10 | 2×2 | — | 10×126 |
| 全连接层1 | 1 | 1 260 | — | 1 260×1 |
| 全连接层2 | 1 | 600 | — | 600×1 |
| 全连接层3 | 1 | 100 | | 100×1 |
), ArticleFig(id=1245407878715125821, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407864299303881, language=EN, label=Table 4, caption=
LSTM model parameters configuration
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数名称 | 符号或数值 |
| 损失函数 | Cross Entropy |
| 优化器 | Adadelta |
| 层数 | 3 |
| LSTM单元 | 100 |
| 批量大小 | 40 |
| 学习率 | 0.001 |
), ArticleFig(id=1245407878845149252, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1245407864299303881, language=CN, label=表4, caption=
LSTM模型参数配置
, figureFileSmall=null, figureFileBig=null, tableContent=
| 参数名称 | 符号或数值 |
| 损失函数 | Cross Entropy |
| 优化器 | Adadelta |
| 层数 | 3 |
| LSTM单元 | 100 |
| 批量大小 | 40 |
| 学习率 | 0.001 |
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