PMID- 38534814 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20240329 IS - 2313-7673 (Electronic) IS - 2313-7673 (Linking) VI - 9 IP - 3 DP - 2024 Feb 21 TI - A Wearable Upper Limb Exoskeleton System and Intelligent Control Strategy. LID - 10.3390/biomimetics9030129 [doi] LID - 129 AB - Heavy lifting operations frequently lead to upper limb muscle fatigue and injury. In order to reduce muscle fatigue, auxiliary force for upper limbs can be provided. This paper presents the development and evaluation of a wearable upper limb exoskeleton (ULE) robot system. A flexible cable transmits auxiliary torque and is connected to the upper limb by bypassing the shoulder. Based on the K-nearest neighbors (KNN) algorithm and integrated fuzzy PID control strategy, the ULE identifies the handling posture and provides accurate active auxiliary force automatically. Overall, it has the quality of being light and easy to wear. In unassisted mode, the wearer's upper limbs minimally affect the range of movement. The KNN algorithm uses multi-dimensional motion information collected by the sensor, and the test accuracy is 94.59%. Brachioradialis muscle (BM), triceps brachii (TB), and biceps brachii (BB) electromyogram (EMG) signals were evaluated by 5 kg, 10 kg, and 15 kg weight conditions for five subjects, respectively, during lifting, holding, and squatting. Compared with the ULE without assistance and with assistance, the average peak values of EMG signals of BM, TB, and BB were reduced by 19-30% during the whole handling process, which verified that the developed ULE could provide practical assistance under different load conditions. FAU - Wang, Qiang AU - Wang Q AD - Shandong Zhongke Advanced Technology Co., Ltd., Jinan 250100, China. FAU - Chen, Chunjie AU - Chen C AUID- ORCID: 0000-0003-4855-9914 AD - Guangdong Provincial Key Lab of Robotics and Intelligent System, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China. FAU - Mu, Xinxing AU - Mu X AD - Shandong Zhongke Advanced Technology Co., Ltd., Jinan 250100, China. FAU - Wang, Haibin AU - Wang H AD - Shandong Zhongke Advanced Technology Co., Ltd., Jinan 250100, China. AD - Guangdong Provincial Key Lab of Robotics and Intelligent System, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China. FAU - Wang, Zhuo AU - Wang Z AUID- ORCID: 0000-0002-1709-7764 AD - Guangdong Provincial Key Lab of Robotics and Intelligent System, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China. FAU - Xu, Sheng AU - Xu S AUID- ORCID: 0000-0002-5086-4152 AD - Shandong Zhongke Advanced Technology Co., Ltd., Jinan 250100, China. AD - Guangdong Provincial Key Lab of Robotics and Intelligent System, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China. FAU - Guo, Weilun AU - Guo W AD - Shandong Zhongke Advanced Technology Co., Ltd., Jinan 250100, China. FAU - Wu, Xinyu AU - Wu X AD - Shandong Zhongke Advanced Technology Co., Ltd., Jinan 250100, China. AD - Guangdong Provincial Key Lab of Robotics and Intelligent System, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China. FAU - Li, Weimin AU - Li W AD - Shandong Zhongke Advanced Technology Co., Ltd., Jinan 250100, China. AD - Guangdong Provincial Key Lab of Robotics and Intelligent System, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China. LA - eng GR - 2021CXGC011304 and 2023CXGC010701/Key R&D program of Shandong Province, China/ GR - Quancheng 5150 Talent Introduction Plan/ GR - 62273325/Natural Science Foundation of China/ GR - 2022YFB4703500 and 2022YFC3601700/National Key R&D Program of China/ PT - Journal Article DEP - 20240221 PL - Switzerland TA - Biomimetics (Basel) JT - Biomimetics (Basel, Switzerland) JID - 101719189 PMC - PMC10968600 OTO - NOTNLM OT - exoskeleton OT - upper limb assistance OT - wearable robotics COIS- Author Qiang Wang, Xingxing Mu, Haibin Wang, Sheng Wu, Weilun Guo, Xinyu Wu, and Weimin Li were employed by the company Shandong Zhongke Advanced Technology Co., Ltd. The remaining authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest. EDAT- 2024/03/27 12:44 MHDA- 2024/03/27 12:45 PMCR- 2024/02/21 CRDT- 2024/03/27 09:27 PHST- 2024/01/17 00:00 [received] PHST- 2024/02/08 00:00 [revised] PHST- 2024/02/19 00:00 [accepted] PHST- 2024/03/27 12:45 [medline] PHST- 2024/03/27 12:44 [pubmed] PHST- 2024/03/27 09:27 [entrez] PHST- 2024/02/21 00:00 [pmc-release] AID - biomimetics9030129 [pii] AID - biomimetics-09-00129 [pii] AID - 10.3390/biomimetics9030129 [doi] PST - epublish SO - Biomimetics (Basel). 2024 Feb 21;9(3):129. doi: 10.3390/biomimetics9030129.