{"title":"Adaptive gait generation based on pose graph optimization for Lower-limb Rehabilitation Exoskeleton Robot","authors":"Xingming Wu, Debin Guo, Jianhua Wang, Jianbin Zhang, Weihai Chen","doi":"10.1109/ICIEA51954.2021.9516173","DOIUrl":"https://doi.org/10.1109/ICIEA51954.2021.9516173","url":null,"abstract":"The lower extremity rehabilitation exoskeleton robot can achieve rich functions through well-designed software and hardware control systems, and bring the gospel to patients with stroke in society. Exoskeleton in the current market has problems such as poor human-computer interaction and a single rehabilitation training scene. Based on the exoskeleton system, this subject studies the human, machine, and environment interactive control strategies of the independent exoskeleton and the adaptive weight-reduction system of the exo-skeleton rehabilitation robot. These studies will significantly improve the human-computer interaction of exoskeleton and expand the rehabilitation training scene of exoskeleton. The innovation of this subject is to design a complete set of independent exoskeleton software and hardware systems, and to design an efficient real-time sensing algorithm for the independent exoskeleton system, and to propose an adaptive trajectory generation algorithm that can adapt to different terrain walking to complete Human, machine, and environment interactions of the exoskeleton system. For the bench-type exoskeleton system, we designed an adaptive weight loss system based on force control to help patients with severe illness to complete rehabilitation training.","PeriodicalId":6809,"journal":{"name":"2021 IEEE 16th Conference on Industrial Electronics and Applications (ICIEA)","volume":"3 1","pages":"1501-1506"},"PeriodicalIF":0.0,"publicationDate":"2021-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73189331","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A cooling capacity distribution method for liquid cooling cycle based on Co-simulation and optimization of AMESim and modeFRONTIER","authors":"Li Haodong, Dong Sujun, J. Hongsheng, Li Yunhua","doi":"10.1109/ICIEA51954.2021.9516133","DOIUrl":"https://doi.org/10.1109/ICIEA51954.2021.9516133","url":null,"abstract":"The flow distribution of each branch of the aircraft's airborne liquid cooling cycle is a key issue to ensure refrigeration performance and improve energy utilization. Due to the correlation of multiple factors, the existing airborne liquid cooling cycle flow distribution method cannot achieve accurate flow distribution result. This paper takes the maximum maximum temperature of all equipment as the optimization goal, and the joint simulation-optimization of the AMESim software and the modeFRONTIER platform is used to solve the optimization design problem of the flow distribution scheme. The result shows that compared with traditional design methods, the use of simulation-based optimization design methods can give full play to the advantages of AMESim software in simulation and performance index calculation and modeFRONTIER software in searching for optimal allocation schemes. It can reduce the maximum temperature of each branch device and effectively improve the cooling effect.","PeriodicalId":6809,"journal":{"name":"2021 IEEE 16th Conference on Industrial Electronics and Applications (ICIEA)","volume":"102 1","pages":"317-322"},"PeriodicalIF":0.0,"publicationDate":"2021-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73648232","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Path Optimization of Intelligent Wheelchair Based on an Improved Ant Colony Algorithm","authors":"Cheng Shen, Qiu-Ping Bi","doi":"10.1109/ICIEA51954.2021.9516243","DOIUrl":"https://doi.org/10.1109/ICIEA51954.2021.9516243","url":null,"abstract":"This paper presents an improved ant colony optimization algorithm for solving intelligent wheelchair path planning problem. The existing ant colony algorithm has many problems in solving intelligent wheelchair path planning problem, such as the extra corners of raster maps and the irregularity of corners. In this paper, the improved ant colony optimization algorithm which can effectively remove the extra corners and smooth the corners with three Bezier curves, combining the constraints of wheelchair physical conditions and environmental conditions was proposed. MATLAB software is used to verify the feasibility and effectiveness of algorithm. Meanwhile, we use the virtual reality technology provided by ROS system to establish GAZEBO physical simulation experiment platform to verify the practicability and feasibility of the algorithm in the mobile robot system. Finally, the effectiveness of the improved algorithm is verified by the movement of the mobile robot in the actual test environment. The results of the proposed algorithm are found to be satisfactory.","PeriodicalId":6809,"journal":{"name":"2021 IEEE 16th Conference on Industrial Electronics and Applications (ICIEA)","volume":"121 1","pages":"1862-1867"},"PeriodicalIF":0.0,"publicationDate":"2021-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72696405","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Qinghao Du, Tuopu Zhang, Guilin Yang, Chin-Yin Chen, Weijun Wang, Chi Zhang
{"title":"A Review of Powered Backdrivability of Robot Actuators for Human-Robot Interaction","authors":"Qinghao Du, Tuopu Zhang, Guilin Yang, Chin-Yin Chen, Weijun Wang, Chi Zhang","doi":"10.1109/ICIEA51954.2021.9516160","DOIUrl":"https://doi.org/10.1109/ICIEA51954.2021.9516160","url":null,"abstract":"To achieve effective and safe Human-Robot Interaction (HRI), much attention is paid on the backdrivability of robot actuators. According to the realization approaches, the backdrivability of actuators are classified into two categories, i.e., powered and unpowered backdrivabilities. This paper focuses on the powered backdrivability realized through controlling actuator reversely based on the sensor feedback. A thorough literature review is conducted to obtain an in-depth understanding about the research advances on powered backdrivability of actuators. The definition, classification and evaluation methods of the actuator backdrivability are discussed firstly. Powered backdrivabilities with force sensors and encoders are reviewed. The research direction of powered backdrivabilities is proposed based on the discussion.","PeriodicalId":6809,"journal":{"name":"2021 IEEE 16th Conference on Industrial Electronics and Applications (ICIEA)","volume":"14 1","pages":"1115-1120"},"PeriodicalIF":0.0,"publicationDate":"2021-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75103465","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Wenxiang Fan, T. Cunha, X. Deng, Yinan Niu, Jundao Mo, Chen Chen, J. Linnartz, Guofu Zhou
{"title":"Achievable Rate of MIMO-OFDM VLC over Low-Pass Channels","authors":"Wenxiang Fan, T. Cunha, X. Deng, Yinan Niu, Jundao Mo, Chen Chen, J. Linnartz, Guofu Zhou","doi":"10.1109/ICIEA51954.2021.9516387","DOIUrl":"https://doi.org/10.1109/ICIEA51954.2021.9516387","url":null,"abstract":"Visible light communication (VLC) is a short-range optical wireless communication (OWC) utilizing white light-emitting diode (LED) lighting, so that the VLC systems can provide both illumination and communication. Multiple-input multiple-output (MIMO) is an attractive technology to efficiently improve the achievable rate of VLC with multiple LED luminaries which experience a low-pass effect in practical channels. In this paper, we investigate the performance of MIMO-VLC over three general low-pass channels, including exponential, first-order and Gaussian low-pass channels. Over frequency domain, two power loading strategies for multi-subcarrier orthogonal frequency division multiplexing (OFDM) are considered, namely uniform power loading and water-filling power loading. Expressions on the achievable rate to the corresponding link power budget and bandwidth are derived. Low-pass MIMO-OFDM VLC with a matrix channel decomposition has not extensively been treated theoretically in literature, to the best of our knowledge.","PeriodicalId":6809,"journal":{"name":"2021 IEEE 16th Conference on Industrial Electronics and Applications (ICIEA)","volume":"58 1","pages":"1340-1345"},"PeriodicalIF":0.0,"publicationDate":"2021-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74830503","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ding Wenjie, W. Shaoping, Zhang Chao, Zhang Qing, M. B. Sial
{"title":"Formation control and obstacle avoidance of MAS with constraints of visibility and motion saturation","authors":"Ding Wenjie, W. Shaoping, Zhang Chao, Zhang Qing, M. B. Sial","doi":"10.1109/ICIEA51954.2021.9516426","DOIUrl":"https://doi.org/10.1109/ICIEA51954.2021.9516426","url":null,"abstract":"This paper proposes a multi-agent formation and movement method based on the leader-follower architecture and visual sensor signals. This method uses a depth camera as the source of information perception in the leader's local environment. After image acquisition and image processing, the external environment information and the obstacle position signal are input into the leader's control system. The controller drives the actuator to avoid obstacles and complete the consistency under weak or without communication conditions Firstly, in view of the hardware limitations of the vision sensor itself, this paper analyzes the saturation constraints of field of view, and couples it with the motion constraints of the actual subject. Secondly, for the coupled constraints, a correction system is used in the design of the negative gradient control law based on the stress matrix. Finally, for the designed closed-loop control system, the stability analysis is carried out using the Lyapunov function, and the error in the modified control protocol is converged. Static and dynamic obstacle avoidance processes are represented by simulation in Matlab.","PeriodicalId":6809,"journal":{"name":"2021 IEEE 16th Conference on Industrial Electronics and Applications (ICIEA)","volume":"18 1","pages":"2107-2113"},"PeriodicalIF":0.0,"publicationDate":"2021-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74033248","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"State Estimation of Lithium-Ion Battery at Different Temperatures Based on DEKF and RLS","authors":"Qingtian Li, Haitao Chen, Sheng Cai, Lei Wang, Honghui Gu, Minxin Zheng","doi":"10.1109/ICIEA51954.2021.9516414","DOIUrl":"https://doi.org/10.1109/ICIEA51954.2021.9516414","url":null,"abstract":"Lithium-ion power battery is the power source of many electronic control systems. The battery state of charge (SOC) and state of health (SOH) are very important to the safety and reliability of the electronic system. Therefore, high-precision estimation of battery SOC and SOH has become one of the current research hotspots in the battery field. In order to realize the state estimation of lithium-ion power battery, an equivalent circuit model of lithium-ion power battery is established. This article is based on the HPPC pulse experiment data and the second-order Thevenin equivalent circuit model. At different temperatures (0°C, 25°C, 45°C), the recursive least square (RLS) method is used to identify of parameters of the equivalent model circuit. The state equation and measurement equation of the double extended Kalman filter (DEKF) algorithm are used to estimate SOC and SOH. Finally, this article uses experimental data of the single cell to estimate the battery state. The accuracy and adaptability of the combination of least squares algorithm and dual extended Kalman filter are verified. This is of great significance for improving the safety, reliability and economic benefits of the battery system.","PeriodicalId":6809,"journal":{"name":"2021 IEEE 16th Conference on Industrial Electronics and Applications (ICIEA)","volume":"88 1","pages":"1619-1624"},"PeriodicalIF":0.0,"publicationDate":"2021-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77021391","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"A Fast Modeling Method using Limited Resources for 3D Campus","authors":"He Yu, Yu Liu, Bing Wang, Jiexi Chen, Zhenjie Ma","doi":"10.1109/ICIEA51954.2021.9516293","DOIUrl":"https://doi.org/10.1109/ICIEA51954.2021.9516293","url":null,"abstract":"In the modern era, the demand of 3D campus model is increasing. In this paper, a fast modeling method developed by using limited resources for 3D campus. The study combined 3D modeling technology with Unity3D platform, using limited resources, such as maps on the web and photos taken by students without the field measurement data. On the basis of this research, the campus model can be created quickly and conveniently, and this method is also very suitable for 3D modeling of an urban area. Moreover, the study realized a campus roaming and basic interactive functions. This research is based on Unity3D platform.","PeriodicalId":6809,"journal":{"name":"2021 IEEE 16th Conference on Industrial Electronics and Applications (ICIEA)","volume":"9 1","pages":"1285-1288"},"PeriodicalIF":0.0,"publicationDate":"2021-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76184714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Shu Cheng, Zhuoxin Li, Chaoqun Xiang, Lulin Zhang, Zekeng Ouyang
{"title":"A Neutral-Point Potential Balanced Deadbeat Direct Torque Control Strategy of Post-Fault Three-Level NPC Inverter-Fed Induction Motor Drives","authors":"Shu Cheng, Zhuoxin Li, Chaoqun Xiang, Lulin Zhang, Zekeng Ouyang","doi":"10.1109/ICIEA51954.2021.9516382","DOIUrl":"https://doi.org/10.1109/ICIEA51954.2021.9516382","url":null,"abstract":"This paper proposes a deadbeat direct torque control strategy that can suppress the fluctuation of the neutralpoint potential (NPP) of the DC bus for the induction motor (IM) system driven by the eight switch three phase inverter (ESTPI). The proposed strategy calculates the torque angle based on the deadbeat control of torque and stator flux, and reference voltage vector is calculated by the discrete stator voltage equation. According to the load current and the NPP, different pairs of small vectors are selected to synthesize a virtual zero vector, thereby implementing NPP control. The proposed control strategy not only achieves the accuracy of torque and stator flux control, but also suppresses the NPP fluctuation. Effectiveness of this method has been validated by simulation results.","PeriodicalId":6809,"journal":{"name":"2021 IEEE 16th Conference on Industrial Electronics and Applications (ICIEA)","volume":"113 1","pages":"815-820"},"PeriodicalIF":0.0,"publicationDate":"2021-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78117465","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yu Gao, Jianglin Nie, Jiangpeng Yang, Shuai Zhang, Tianxiang Wang, Zeliang Shu
{"title":"FPGA Controller Based Bidirectional CLLC Resonant Battery Charger","authors":"Yu Gao, Jianglin Nie, Jiangpeng Yang, Shuai Zhang, Tianxiang Wang, Zeliang Shu","doi":"10.1109/ICIEA51954.2021.9516157","DOIUrl":"https://doi.org/10.1109/ICIEA51954.2021.9516157","url":null,"abstract":"The isolated bidirectional resonant converter is widely applied for renewable energy battery charger because of its high operating frequency and power density. But traditional LLC converter has many problems in reverse working mode. This paper introduces the CLLC resonant converter into the battery charging and discharging system. The circuit principle and the equivalent model of CLLC resonant converter is analyzed and constructed by FHA method. The CLLC battery charger control strategy is realized by FPGA. Based on the theoretical analysis, the resonant network parameters are designed. Finally, the experimental hardware platform of CLLC resonant converter is designed to verify the feasibility of the overall system.","PeriodicalId":6809,"journal":{"name":"2021 IEEE 16th Conference on Industrial Electronics and Applications (ICIEA)","volume":"36 1","pages":"889-893"},"PeriodicalIF":0.0,"publicationDate":"2021-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76530141","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}