Journal of the Chinese Institute of Engineers最新文献_第7页

Design optimization and redundant actuation selection for an efficient assistive robotic exoskeleton 高效辅助机器人外骨骼设计优化与冗余驱动选择

IF 1.1 4区工程技术

Journal of the Chinese Institute of Engineers Pub Date : 2023-05-04 DOI: 10.1080/02533839.2023.2204894

A. Ghaffar, A. Dehghani-Sanij, Shengquan Xie, Abdullah Tahir, Awais Hafeez

{"title":"Design optimization and redundant actuation selection for an efficient assistive robotic exoskeleton","authors":"A. Ghaffar, A. Dehghani-Sanij, Shengquan Xie, Abdullah Tahir, Awais Hafeez","doi":"10.1080/02533839.2023.2204894","DOIUrl":"https://doi.org/10.1080/02533839.2023.2204894","url":null,"abstract":"ABSTRACT Selection of an actuation system for assistive robotic exoskeletons requires careful consideration of various design factors. It is generally the requirement of the system to produce lightweight and power-efficient systems. In some cases, the torque and power requirements could be relaxed by using redundant systems. This paper involves the study of one such case in which the actuation redundancy of the system will be exploited, and the design optimization will be explored for a rigid and an elastic system. A multi-factor optimization technique will be developed for a redundant elastic actuation system. An actuator design framework will be used to evaluate the different actuator choices to determine the best motor and transmission system combination in a redundant actuation system arrangement. This will be evaluated for a rigid, parallel, and series elastic actuation system. The optimal redundant actuation system significantly reduced the power requirements of the system. The case study was virtually implemented. It was established that variable parallel elastic actuators (V-PEA) performed better as compared to variable series elastic actuators (V-SEA).","PeriodicalId":17313,"journal":{"name":"Journal of the Chinese Institute of Engineers","volume":"17 1","pages":"490 - 503"},"PeriodicalIF":1.1,"publicationDate":"2023-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72449619","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A mathematical model to forecast solar PV performance 预测太阳能光伏性能的数学模型

IF 1.1 4区工程技术

Journal of the Chinese Institute of Engineers Pub Date : 2023-05-04 DOI: 10.1080/02533839.2023.2204896

T.S Bagavat Perumaal, P. Seshadri, B. Ashok kumar, S. Senthilrani

{"title":"A mathematical model to forecast solar PV performance","authors":"T.S Bagavat Perumaal, P. Seshadri, B. Ashok kumar, S. Senthilrani","doi":"10.1080/02533839.2023.2204896","DOIUrl":"https://doi.org/10.1080/02533839.2023.2204896","url":null,"abstract":"ABSTRACT This work focuses on developing a mathematical model to forecast the performance of solar PV. In the present scenario, solar photovoltaic performance has been envisaged by considering the impact of limited variables subject to certain assumptions and conditions and the current work drives the attention toward the effect of temperature, relative humidity, wind velocity, and panel aging effects. There hasn’t been any breakthrough in the previous research so far while collectively analyzing the efficiency loss in solar photovoltaic, due to the aforementioned parameters. Hence, this work aims to develop a mathematical model in view of the above-mentioned parameters. This work has been experimented using MATLAB software and online simulation tools are used to validate the results. The results are favorable with the deviation of efficiency between the online simulation tool and the proposed mathematical model being 2–4%. Furthermore, a real-time case study has been carried out at a solar power plant installed at Thiagarajar College of Engineering, Madurai, Tamilnadu, to validate the proposed mathematical model. It is observed that the absolute difference in power between the simulation and the actual meter reading is between 30 and 60 Watts with an RMSE between 5 and 16% and MPE of 675 Watts.","PeriodicalId":17313,"journal":{"name":"Journal of the Chinese Institute of Engineers","volume":"99 1","pages":"431 - 440"},"PeriodicalIF":1.1,"publicationDate":"2023-05-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85848515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

An enzyme-free interdigitated electrode for ketamine detection 一种检测氯胺酮的无酶交叉指状电极

IF 1.1 4区工程技术

Journal of the Chinese Institute of Engineers Pub Date : 2023-05-02 DOI: 10.1080/02533839.2023.2204938

T. Phan, Nguyen Van Hieu, Jing-Jenn Lin, Hsing-Ju Wu, P. Chu, C. Hsiao, Fiona Yan-Dong Yao, Yung-Kai Lin, C. Ching

引用次数: 0

A study of tolerance allocation and stack-up analysis to improve the assembly precision of an injection mold 提高注塑模具装配精度的公差分配与叠加分析研究

IF 1.1 4区工程技术

Journal of the Chinese Institute of Engineers Pub Date : 2023-05-02 DOI: 10.1080/02533839.2023.2204883

Y. Tsai, Kuan-Hong Lin, Chun-Sheng Chen

{"title":"A study of tolerance allocation and stack-up analysis to improve the assembly precision of an injection mold","authors":"Y. Tsai, Kuan-Hong Lin, Chun-Sheng Chen","doi":"10.1080/02533839.2023.2204883","DOIUrl":"https://doi.org/10.1080/02533839.2023.2204883","url":null,"abstract":"ABSTRACT Tolerance designing is a critical job for the assemblies to ensure their precision and functions. Tolerance design must consider manufacturing capability for ensuring the feasibility of the designs in the following processing. This paper presents the available methods of determining tolerance sizes and tolerance analysis to improve assembly precision. An injection mold consisting of hundreds of parts is used as an example to depict the methods of tolerance designing. The precision grades and the corresponding tolerance ranges applied in engineering fits are introduced for giving reasonable tolerances in designing. The defect rates of the designed tolerances to the machining precisions are investigated for observing the effects of manufacturing capabilities. An approach based on block assembly is proposed for eliminating tolerance stack-up, as well as improving assembly precision. The assembly tolerances can be reduced from 0.071 to 0.032 mm by using the proposed method, and the defect rates in manufacturing can be improved from 9.05% to 0.02%. It means that a larger range of tolerances can be designed to meet the specifications, as well as reduce the manufacturing costs.","PeriodicalId":17313,"journal":{"name":"Journal of the Chinese Institute of Engineers","volume":"19 1","pages":"479 - 489"},"PeriodicalIF":1.1,"publicationDate":"2023-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75018814","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Numerical simulation of damage evolution of bolted connectors considering fretting fatigue effect 考虑微动疲劳效应的螺栓连接件损伤演化数值模拟

IF 1.1 4区工程技术

Journal of the Chinese Institute of Engineers Pub Date : 2023-05-02 DOI: 10.1080/02533839.2023.2204911

Ying Wang, Zheng Yan, Yang-Yang Wu, K. Hu

{"title":"Numerical simulation of damage evolution of bolted connectors considering fretting fatigue effect","authors":"Ying Wang, Zheng Yan, Yang-Yang Wu, K. Hu","doi":"10.1080/02533839.2023.2204911","DOIUrl":"https://doi.org/10.1080/02533839.2023.2204911","url":null,"abstract":"ABSTRACT In engineering, the failure of bolted connector is mainly caused by multi-axis non-proportional fretting fatigue damage. A three-dimensional finite element model of bolted connector is established in this paper, and a damage constitutive model suitable for multi-axial fatigue analysis is established based on the critical plane SWT (Smith Watson-Topper) method and continuous damage mechanics theory. A material subroutine UMAT is developed to describe the damage model and realizes the visualization of the damage evolution process caused by the fretting fatigue effect. Based on the test, the validity of the program is verified, the fretting fatigue characteristics and damage evolution characteristics of the bolted connector are analyzed. The results show that (i) the damage evolution analysis method can make up for the deficiency that the critical plane SWT method is only used for simple components and can be applied to the damage evolution analysis and fatigue life evaluation of three-dimensional complex structures. (ii) The crack initiation position of the connecting plate does not change with the magnitude of the tensile load and pre tightening force. In the process of losing the bolt preload from 1 to 0.8 times, the connected parts will be damaged faster as the preload 20 decreases.","PeriodicalId":17313,"journal":{"name":"Journal of the Chinese Institute of Engineers","volume":"4 1","pages":"504 - 518"},"PeriodicalIF":1.1,"publicationDate":"2023-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82263607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A study on the construction of die-casting production prediction model by machine learning with Taguchi methods 基于田口方法的机器学习压铸生产预测模型构建研究

IF 1.1 4区工程技术

Journal of the Chinese Institute of Engineers Pub Date : 2023-04-30 DOI: 10.1080/02533839.2023.2204880

Y. Jou, R. M. Silitonga, R. Sukwadi

{"title":"A study on the construction of die-casting production prediction model by machine learning with Taguchi methods","authors":"Y. Jou, R. M. Silitonga, R. Sukwadi","doi":"10.1080/02533839.2023.2204880","DOIUrl":"https://doi.org/10.1080/02533839.2023.2204880","url":null,"abstract":"ABSTRACT Technologies such as machine learning, big data, and Industry 4.0 have become the trends in the development of science and technology in various countries in recent years. This research hopes to establish a predictive model through data analysis to help die-casting plants determine whether there are defects in the castings and improve the production competitiveness of domestic die-casting plants. Data was taken from the domestic automobile industry and used actual production data as the basis for analysis. In this study, relevant parameters of die-casting manufacturing as independent variables were chosen and determined whether there were defects in the castings as strain numbers. Afterward, the researchers constructed Artificial Neural Network, Support Vector Machines, and Random Forests as three prediction models. Three prediction models with the Taguchi Methods are used to find the best parameter configuration of each model. AUC (Area Under Curve)- Receiver Operating-Characteristic (ROC) evaluates the strength and weaknesses of the three models and, in the end, finds the most suitable network prediction model.","PeriodicalId":17313,"journal":{"name":"Journal of the Chinese Institute of Engineers","volume":"18 1","pages":"540 - 550"},"PeriodicalIF":1.1,"publicationDate":"2023-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90315711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A power generation roadbed based on direct current triboelectric nanogenerators for human kinetic energy harvesting 一种用于人体动能收集的直流摩擦纳米发电机发电路基

IF 1.1 4区工程技术

Journal of the Chinese Institute of Engineers Pub Date : 2023-04-28 DOI: 10.1080/02533839.2023.2204930

Baichuan Shan, Changxin Liu, Nanxi Chen, Jianhao Liu, H. Sui, Huaan Li, Guangyi Xing, Runhe Chen

{"title":"A power generation roadbed based on direct current triboelectric nanogenerators for human kinetic energy harvesting","authors":"Baichuan Shan, Changxin Liu, Nanxi Chen, Jianhao Liu, H. Sui, Huaan Li, Guangyi Xing, Runhe Chen","doi":"10.1080/02533839.2023.2204930","DOIUrl":"https://doi.org/10.1080/02533839.2023.2204930","url":null,"abstract":"ABSTRACT As the foundation of intelligent cities, many intelligent sensors require energy to support their work, such as batteries. Harnessing energy from the environment or human movement is a viable solution to this issue. The device which collects this part of energy and convert it into electric energy, can supply electricity to electrical appliances. This research proposes a human kinetic energy collection device based on a direct current triboelectric nanogenerator. Compared to the traditional TENG, the spinning energy collector triboelectric nanogenerator (SEC-TENG) can directly output direct current without a rectifier unit. By combining the SEC-TENG with the rack and pinion mechanism, the vertical motion can convert into rotary motion to drive the SEC-TENG to generate electric energy. The best-matched impedance of the device is 1 MΩ, and the device has a power generation performance of 450 V open circuit voltage and 11 µA short circuit current at a rotational speed of 300 r/min. The device can collect the kinetic energy of human footsteps and pedaling actions as a power generation roadbed, which provides electricity to the sensors on the roadside. It provides a potential energy supply plan for constructing intelligent cities.","PeriodicalId":17313,"journal":{"name":"Journal of the Chinese Institute of Engineers","volume":"71 1","pages":"453 - 463"},"PeriodicalIF":1.1,"publicationDate":"2023-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74887862","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigating the solution behavior of CO2 in ester based on a hybrid of ANN technology and PS method 基于人工神经网络技术和PS方法的CO2在酯中的溶解行为研究

IF 1.1 4区工程技术

Journal of the Chinese Institute of Engineers Pub Date : 2023-04-25 DOI: 10.1080/02533839.2023.2204903

Huichao Lv, Yanhong Shen, Baoli Li, Dayong Tian

引用次数: 0

Ride analysis of railway vehicle considering rigidity and flexibility of the carbody 考虑车体刚度和柔度的轨道车辆行驶分析

IF 1.1 4区工程技术

Journal of the Chinese Institute of Engineers Pub Date : 2023-04-13 DOI: 10.1080/02533839.2023.2194918

R. Sharma, S. Palli, S. Sharma

引用次数: 0

Solving a job shop scheduling problem 求解一个作业车间调度问题

IF 1.1 4区工程技术

Journal of the Chinese Institute of Engineers Pub Date : 2023-04-13 DOI: 10.1080/02533839.2023.2194674

A. K. R., J. R. Raja Dhas

{"title":"Solving a job shop scheduling problem","authors":"A. K. R., J. R. Raja Dhas","doi":"10.1080/02533839.2023.2194674","DOIUrl":"https://doi.org/10.1080/02533839.2023.2194674","url":null,"abstract":"ABSTRACT Job shop scheduling is a highly nondeterministic polynomial combinatorial issue. In this regard, optimization is essential for reducing the time consumed to perform a task. This research paper proposes an evolved social spider optimization method to deal with the job shop scheduling problem. The evolved social spider optimization method was developed by combining both the differential evolutionary and the social spider optimizations. The key proposal is to minimize the makespan time and solve Job shop scheduling problems to improve productivity. The differential evolutionary algorithm is integrated into the spider position update to boost the exploration capabilities of the social spider optimization algorithm. The time taken for ‘‘i’ jobs and ‘‘j’ machines to perform their tasks is studied. Consequently, 23 benchmark problems were prosperously studied utilizing the proposed techniques, and the computational results were compared with previous Meta heuristics methods. An all-inclusive comparison process was carried out to rate the efficiency of the existing optimization techniques in solving job shop scheduling problems. The proposed method of evolved social spider optimization has emerged as the most promising methodology in solving the job shop scheduling problem by consuming minimum makespan time.","PeriodicalId":17313,"journal":{"name":"Journal of the Chinese Institute of Engineers","volume":"1 1","pages":"315 - 330"},"PeriodicalIF":1.1,"publicationDate":"2023-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87767324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2