American Journal of Mechanical and Industrial Engineering最新文献

Hybrid Position and Force Control for Upper Limb Rehabilitation of Stroke Patient 用于中风患者上肢康复的混合位置和力控制装置

American Journal of Mechanical and Industrial Engineering Pub Date : 2024-07-02 DOI: 10.11648/j.ajmie.20240902.12

Muhammad Ali, Muhammad Bilal, Muhammad Akram, M. Rizwan

{"title":"Hybrid Position and Force Control for Upper Limb Rehabilitation of Stroke Patient","authors":"Muhammad Ali, Muhammad Bilal, Muhammad Akram, M. Rizwan","doi":"10.11648/j.ajmie.20240902.12","DOIUrl":"https://doi.org/10.11648/j.ajmie.20240902.12","url":null,"abstract":"This paper presents hybrid position and force control (HPFC) methodology for position and as well as force tracking for upper limb rehabilitation of stroke patients. Stroke is a leading cause of disability in humans. Traditional rehabilitative therapies help regain motor function and ameliorate impairment, but they depend on the therapist’s experience and require many therapists, which is cost-prohibitive. Most robotic tasks with high severity such as rehabilitation, demands an effective force as well as position control scheme to ensure the safe physical contact between the robot and its environment in this case the patient. Some rehabilitation robots have been developed to help stroke survivors recover motor function. In past robots used for upper-limb rehabilitation employed general control schemes such as proportional integral derivative. To overcome the problem of force tracking in rehabilitation, robots require modern control techniques. To mimic the human upper-limb, and universality of application, an end-effector based robot is used for this study. To ensure the convergence of position and force errors to zero extensive simulations are performed. Two of assistant modes passive and active assistive rehabilitation are considered. Most common rehabilitation trajectories horizontal reaching, and vertical reaching are selected as robot’s motion for both passive and active assistive activities. The mathematical model of robots’ kinematics, dynamics, alongside the proposed control scheme has been discussed in detail.\u0000","PeriodicalId":156242,"journal":{"name":"American Journal of Mechanical and Industrial Engineering","volume":"23 46","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141685124","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}

引用次数: 0

Disruptive Product Innovations: A New Definition and Seven Theses 颠覆性产品创新：新定义和七个论点

American Journal of Mechanical and Industrial Engineering Pub Date : 2024-03-07 DOI: 10.11648/j.ajmie.20240902.11

Frank Koppenhagen, Christoph H. Wecht, Tobias Held

{"title":"Disruptive Product Innovations: A New Definition and Seven Theses","authors":"Frank Koppenhagen, Christoph H. Wecht, Tobias Held","doi":"10.11648/j.ajmie.20240902.11","DOIUrl":"https://doi.org/10.11648/j.ajmie.20240902.11","url":null,"abstract":"The importance of disruptive product innovations is undisputed. However, the understanding of what constitutes a disruptive innovation varies widely in academic discourse. Therefore, this paper begins with a new definition of disruptive product innovation based on the design of the product innovation and its subsequent adoption by competitors. It then presents the results of an ongoing research project that uses a qualitative case study approach to analyze product innovations from the last fifty years that meet this definition. Both the design and the development process of these product innovations have been examined in detail. In particular, the effective principles and structures, geometric layouts and operating concepts used in the product innovations were analyzed, as were the differences to previous products. In addition, changes in the social and technological environment that led to the innovations were examined, as well as the role of new enabling technologies, in particular new materials and production processes. The common patterns across cases identified through the analysis were condensed into seven theses, which are presented in this article, each of them illustrated by using the example of the first iPhone. Said theses reflect the central research findings on (1) \"Key usability contradictions as starting points\", (2) \"User-centeredness\", (3) \"Co-evolution of problem and solution space\", (4) \"Technical fixations that create cognitive gravitation\", (5) \"Facilitation through new technologies and reciprocal enablers\", (6) \"Higher degree of ideality\" and (7) \"Shifting tasks in the overarching human-product interaction system to the product\". Finally, starting points for further research are formulated.\u0000","PeriodicalId":156242,"journal":{"name":"American Journal of Mechanical and Industrial Engineering","volume":"39 135","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140260159","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}

引用次数: 0

Risk Analysis of Upper Limb Musculoskeletal Disorders in Industrial Skin Measurement Workers Using the Assessment of Repetitive Task Method 使用重复性工作评估法对工业皮肤测量工人上肢肌肉骨骼疾病进行风险分析

American Journal of Mechanical and Industrial Engineering Pub Date : 2024-02-21 DOI: 10.11648/j.ajmie.20240901.12

Tri Budiyanto, Sef Feriyansa, M. Yusuf

{"title":"Risk Analysis of Upper Limb Musculoskeletal Disorders in Industrial Skin Measurement Workers Using the Assessment of Repetitive Task Method","authors":"Tri Budiyanto, Sef Feriyansa, M. Yusuf","doi":"10.11648/j.ajmie.20240901.12","DOIUrl":"https://doi.org/10.11648/j.ajmie.20240901.12","url":null,"abstract":"In the leather industry production process in the Piyungan area of Yogyakarta, Indonesia, the operators do a lot of repetitive activities with intensity and frequency of movement for a long time, for 8 hours in a sitting position. Operators measure on average 4700 pieces of leather per day. This leads to fatigue and complaints of musculoskeletal disorders (MSDs). For this reason, research was conducted to measure the level of risk of MSDs and improve them to reduce muscle complaints. This research was conducted experimentally on all skin-cutting operators at companies in the Piyungan area of Yogyakarta. Measurement of the risk level of upper limb musculoskeletal disorders using the Assessment of Repetitive Tasks (ART) method. The data was analyzed based on ART scores obtained, ranging from low, medium, and high risk level scores. The conclusion of the results showed that the risk level of upper limb musculoskeletal disorders in this skin measurement operator included medium and high risk levels on the left and right upper limb operators. Improvements that can be made to reduce the level of risk are improvements to work facilities in the form of chairs, additional short rest periods, and stretching muscles before and after doing work on all skin measurement production operators.","PeriodicalId":156242,"journal":{"name":"American Journal of Mechanical and Industrial Engineering","volume":"5 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140445108","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}

引用次数: 0

The Effect of Cooling Load Variations on Basic Refrigerator Simulation Performance 冷却负荷变化对基本冰箱模拟性能的影响

American Journal of Mechanical and Industrial Engineering Pub Date : 2024-02-01 DOI: 10.11648/ajmie.20240901.11

Nyoman Gede Baliarta, M. Yusuf

引用次数: 0

The Effect of Cooling Load Variations on Basic Refrigerator Simulation Performance 冷却负荷变化对基本冰箱模拟性能的影响

American Journal of Mechanical and Industrial Engineering Pub Date : 2024-02-01 DOI: 10.11648/ajmie.20240901.11

Nyoman Gede Baliarta, M. Yusuf

引用次数: 0

Selection of Twin Engine Multirole Fighter Aircraft Using Multiple Criteria Decision-Making Analysis (MCDMA) 利用多重标准决策分析（MCDMA）选择双引擎多用途战斗机

American Journal of Mechanical and Industrial Engineering Pub Date : 2023-11-24 DOI: 10.11648/j.ajmie.20230805.12

Himanshu Bhatra, Sanjeev Mishra

引用次数: 0

Active Control of Shaft Torsional Vibration with a Dynamic Torque Actuator 利用动态扭矩致动器主动控制轴扭转振动

American Journal of Mechanical and Industrial Engineering Pub Date : 2023-11-09 DOI: 10.11648/j.ajmie.20230805.11

Luo Qing, Wen-kun Fan, Hu Jie, Jia-xin Dong, Wang Jiao

引用次数: 0

Numerical Analysis for Reducing Fuel Consumption and CO₂ Emissions in a Passenger Bus 减少客车燃料消耗和二氧化碳排放的数值分析

American Journal of Mechanical and Industrial Engineering Pub Date : 2023-10-31 DOI: 10.11648/j.ajmie.20230804.12

Md. Rezaul Karim Sikder, Mohammad Zoynal Abedin

引用次数: 0

Numerical Analysis of Drag Reduction Using Aerodynamic Designs in a Passenger Bus 利用空气动力设计减少客车阻力的数值分析

American Journal of Mechanical and Industrial Engineering Pub Date : 2023-10-12 DOI: 10.11648/j.ajmie.20230804.11

Md. Rezaul Karim Sikder, Mohammad Zoynal Abedin

引用次数: 0

Questionnaires with Answers on the Automotive Engine Fundamentals: Bangladesh Perspective 关于汽车发动机基本原理的问卷答案:孟加拉国的观点

American Journal of Mechanical and Industrial Engineering Pub Date : 2023-07-17 DOI: 10.11648/j.ajmie.20230803.11

Samsul Islam, Mohammad Zoynal Abedin, Zahid Ahsan, Md. Abdul Hannan Miah, Arif Md. Shahed Iqubal, Md. Mir Shakib Ahmed, Mustafizur Rahman, Mohammad Abdul Hye, Md. Rezaul Karim Sikder, M. Osman Gani, Md. Aminul Islam, Md. Saik Mostar Kiron

引用次数: 0