Pub Date : 2023-08-25DOI: 10.36962/piretc27062023-162
Oleksiy Penkov, Mingfeng Li Oleksiy Penkov, Mingfeng Li, Pengyuan Wu, Jiong Jin Pengyuan Wu, Jiong Jin
Periodical multilayer mirrors (PMMs) are coatings used in various industrial and scientific applications for the manipulation of X-Rays. PPMs consist of periodically repeated stacks; every stack comprises nanolayers of several different materials. The number of stacks may vary from 50 to 500. Manufacturing such coatings, consisting of hundreds of nanolayers, needs precise sputtering deposition systems. A deposition system must provide a stable deposition rate and accurate deposition time control. This paper developed a new process control system to satisfy these requirements. Before running the deposition process, the final script is saved automatically to a backup folder; the file name is created automatically and includes the date and time that is why every deposition can be repeated with the same parameters. Multithreading and precise microcontrollers allowed real-time management of the deposition process and increased user interface responsiveness. System architecture and hardware structure schemes for robust PMMs manufacturing were designed. Corresponding operator software having custom script language was developed to provide flexibility and simplicity of operation. The architecture of the software allowed high responsiveness of the user interfaces. The system was tested to verify the reliability of the deposition process and the high quality of PMMs. Keywords: Process control, vacuum, sputtering, automation, SCADA, user interface.
{"title":"DESIGN OF CONTROL SYSTEM FOR MANUFACTURING OF PERIODICAL MULTILAYER X-RAY MIRRORS","authors":"Oleksiy Penkov, Mingfeng Li Oleksiy Penkov, Mingfeng Li, Pengyuan Wu, Jiong Jin Pengyuan Wu, Jiong Jin","doi":"10.36962/piretc27062023-162","DOIUrl":"https://doi.org/10.36962/piretc27062023-162","url":null,"abstract":"Periodical multilayer mirrors (PMMs) are coatings used in various industrial and scientific applications for the manipulation of X-Rays. PPMs consist of periodically repeated stacks; every stack comprises nanolayers of several different materials. The number of stacks may vary from 50 to 500. Manufacturing such coatings, consisting of hundreds of nanolayers, needs precise sputtering deposition systems. A deposition system must provide a stable deposition rate and accurate deposition time control. This paper developed a new process control system to satisfy these requirements. Before running the deposition process, the final script is saved automatically to a backup folder; the file name is created automatically and includes the date and time that is why every deposition can be repeated with the same parameters. Multithreading and precise microcontrollers allowed real-time management of the deposition process and increased user interface responsiveness. System architecture and hardware structure schemes for robust PMMs manufacturing were designed. Corresponding operator software having custom script language was developed to provide flexibility and simplicity of operation. The architecture of the software allowed high responsiveness of the user interfaces. The system was tested to verify the reliability of the deposition process and the high quality of PMMs. Keywords: Process control, vacuum, sputtering, automation, SCADA, user interface.","PeriodicalId":477255,"journal":{"name":"Piretc","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134930476","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}
Many diseases and injuries of the hand require rehabilitation to restore function. However, the high human, financial, spatial, and temporal costs associated with rehabilitation often mean that the population in need does not have access to optimal rehabilitative care. Therefore, devices that complement the therapist are a possible solution, as they make rehabilitation more independent and frequent, and save healthcare facilities the aforementioned resources. Nevertheless, these devices are not widely distributed in the market, mainly due to their poor accessibility. The newly designed exoskeleton has four motors and a redundant transmission system that allows independent flexion and extension of each finger, except the thumb. Kinematics were analyzed with motion studies and loads were evaluated with static studies and structural analysis using motion loads. In the simulations, both flexion and extension were achieved in four seconds. A prototype transmission system was built and its kinematics matched that of the simulation and corresponded to the biomechanics of the fingers. At maximum flexion, the exoskeleton would be able to hold small objects and exert a normal force of up to 20 N with structural integrity. Keywords: Engineering design, exoskeleton, hand rehabilitation, hand functionalization.
{"title":"HAND EXOSKELETON FOR REHABILITATION AND FUNCTIONALIZATION","authors":"Tiago Leite, Eurico Seabra Tiago Leite, Eurico Seabra","doi":"10.36962/piretc27062023-214","DOIUrl":"https://doi.org/10.36962/piretc27062023-214","url":null,"abstract":"Many diseases and injuries of the hand require rehabilitation to restore function. However, the high human, financial, spatial, and temporal costs associated with rehabilitation often mean that the population in need does not have access to optimal rehabilitative care. Therefore, devices that complement the therapist are a possible solution, as they make rehabilitation more independent and frequent, and save healthcare facilities the aforementioned resources. Nevertheless, these devices are not widely distributed in the market, mainly due to their poor accessibility. The newly designed exoskeleton has four motors and a redundant transmission system that allows independent flexion and extension of each finger, except the thumb. Kinematics were analyzed with motion studies and loads were evaluated with static studies and structural analysis using motion loads. In the simulations, both flexion and extension were achieved in four seconds. A prototype transmission system was built and its kinematics matched that of the simulation and corresponded to the biomechanics of the fingers. At maximum flexion, the exoskeleton would be able to hold small objects and exert a normal force of up to 20 N with structural integrity. Keywords: Engineering design, exoskeleton, hand rehabilitation, hand functionalization.","PeriodicalId":477255,"journal":{"name":"Piretc","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134930470","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}
Pub Date : 2023-04-19DOI: 10.36962/piretc23022023-52
Javida Damirova Javida Damirova
In the paper stability losses of the packer with a girdle construction have been investigated by taking into account compactness mechanism. Expanding and constricting cases of conical surface of the packer with a girdle construction have been studied, stability problem of the packer has been solved via numerical estimation by using finite differences method. With this purpose, continuity condition of the deformation has been written for packer construction (cylindrical and conical surface of the packer) and added to stability losses condition. In the first approach the solution has been carried out in boundary and junction nodes of the packer (where cylindrical and conical surfaces combine), however, in the second approach by finite differences method. During packing process stability losses limit has been studied for the first time for a girdle construction. Keywords: packing, well packing, cylindrical-conical construction packing, mode of deformation, critical pressure in packing.
{"title":"INVESTIGATION OF STABILITY LOSSES OF THE PACKER WITH A GIRDLE-CYLINDRICAL-CONICAL CONSTRUCTION","authors":"Javida Damirova Javida Damirova","doi":"10.36962/piretc23022023-52","DOIUrl":"https://doi.org/10.36962/piretc23022023-52","url":null,"abstract":"In the paper stability losses of the packer with a girdle construction have been investigated by taking into account compactness mechanism. Expanding and constricting cases of conical surface of the packer with a girdle construction have been studied, stability problem of the packer has been solved via numerical estimation by using finite differences method. With this purpose, continuity condition of the deformation has been written for packer construction (cylindrical and conical surface of the packer) and added to stability losses condition. In the first approach the solution has been carried out in boundary and junction nodes of the packer (where cylindrical and conical surfaces combine), however, in the second approach by finite differences method. During packing process stability losses limit has been studied for the first time for a girdle construction. Keywords: packing, well packing, cylindrical-conical construction packing, mode of deformation, critical pressure in packing.","PeriodicalId":477255,"journal":{"name":"Piretc","volume":"166 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135808063","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}
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