Pub Date : 2023-05-26DOI: 10.1109/ICMIMT59138.2023.10200333
Jian Jiang, Pu Li, Zhaodong Wang
This study provides an effective analytical framework for determining the steady-state response of an open cylinder shell subjected to sinusoidal excitation. On the basis of the Reissner thin shell theory, the calculation formula for the natural frequency of an open cylindrical shell simply supported at all edges is derived, and the method’s accuracy is validated by comparing the calculated results to those of a commercial finite element method (FEM). Using the method of modal shape superposition, the calculation formula for the steady-state response of an open cylindrical shell subjected to sinusoidal excitation is derived after obtaining the natural frequencies and their corresponding modal shapes. Based on this, the impact of structural parameters of open cylindrical shells on the steady-state response is investigated. The results and conclusions of numerical examples can provide references for engineering applications.
{"title":"Steady-State Vibration Responses of Open Cylindrical Shells Based on Reissner Theory","authors":"Jian Jiang, Pu Li, Zhaodong Wang","doi":"10.1109/ICMIMT59138.2023.10200333","DOIUrl":"https://doi.org/10.1109/ICMIMT59138.2023.10200333","url":null,"abstract":"This study provides an effective analytical framework for determining the steady-state response of an open cylinder shell subjected to sinusoidal excitation. On the basis of the Reissner thin shell theory, the calculation formula for the natural frequency of an open cylindrical shell simply supported at all edges is derived, and the method’s accuracy is validated by comparing the calculated results to those of a commercial finite element method (FEM). Using the method of modal shape superposition, the calculation formula for the steady-state response of an open cylindrical shell subjected to sinusoidal excitation is derived after obtaining the natural frequencies and their corresponding modal shapes. Based on this, the impact of structural parameters of open cylindrical shells on the steady-state response is investigated. The results and conclusions of numerical examples can provide references for engineering applications.","PeriodicalId":286146,"journal":{"name":"2023 14th International Conference on Mechanical and Intelligent Manufacturing Technologies (ICMIMT)","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127126901","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 : 2023-05-26DOI: 10.1109/ICMIMT59138.2023.10199531
Meng Yu, Chenhao Li, Jinchun Wu, Haiyan Wang
AR-HUD (Augmented Reality-Head-Up Display) is a driving assistance system that allows drivers to directly view navigation and warning information through the windscreen in an easily perceivable augmented reality format. However, in ARHUD, the frequency of AR graphics changes is far too frequent, which can easily lead to negative effects such as visual confusion. Using the Situation Awareness theory and the Task-Information theory, this research analysed drivers’ cognitive characteristics and summed up their functional requirements for vehicle information display systems, focusing on three relatively complex driving scenarios. The purpose of this study was to examine the amount of attention paid by drivers to various AR element information in three different driving scenarios involving vehicles passing through traffic intersections with traffic lights (Scenario 1: pull-over parking; Scenario 2: waiting at a red light; Scenario 3: passing through a green light). We invited 54 experienced drivers to conduct the experiments. The experimental results indicated that in all three scenarios, the subjects generally had a higher demand for safety reminders. In Scenario 1 (pull-over parking), they had a higher demand for basic information such as vehicle speed information; in Scenario 2 (waiting at a red light), they had a relatively higher demand for signal light reminders in safety reminder information; in Scenario 3 (passing through a green light), the subjects had significantly higher attention to vehicle speed than other basic information, and due to the complexity of road conditions, the demand for safety reminder information reached the highest level in all three scenarios. In summary, driver’s demand for AR element information varies in different scenarios, as does their subjective attention to different information categories. This paper developed a design method and process based on the driver’s attention hierarchy, with significant implications for guiding AR-HUD design.
{"title":"Exploring the Attention Level of AR-HUD Interface Elements Based on Driving Scenarios","authors":"Meng Yu, Chenhao Li, Jinchun Wu, Haiyan Wang","doi":"10.1109/ICMIMT59138.2023.10199531","DOIUrl":"https://doi.org/10.1109/ICMIMT59138.2023.10199531","url":null,"abstract":"AR-HUD (Augmented Reality-Head-Up Display) is a driving assistance system that allows drivers to directly view navigation and warning information through the windscreen in an easily perceivable augmented reality format. However, in ARHUD, the frequency of AR graphics changes is far too frequent, which can easily lead to negative effects such as visual confusion. Using the Situation Awareness theory and the Task-Information theory, this research analysed drivers’ cognitive characteristics and summed up their functional requirements for vehicle information display systems, focusing on three relatively complex driving scenarios. The purpose of this study was to examine the amount of attention paid by drivers to various AR element information in three different driving scenarios involving vehicles passing through traffic intersections with traffic lights (Scenario 1: pull-over parking; Scenario 2: waiting at a red light; Scenario 3: passing through a green light). We invited 54 experienced drivers to conduct the experiments. The experimental results indicated that in all three scenarios, the subjects generally had a higher demand for safety reminders. In Scenario 1 (pull-over parking), they had a higher demand for basic information such as vehicle speed information; in Scenario 2 (waiting at a red light), they had a relatively higher demand for signal light reminders in safety reminder information; in Scenario 3 (passing through a green light), the subjects had significantly higher attention to vehicle speed than other basic information, and due to the complexity of road conditions, the demand for safety reminder information reached the highest level in all three scenarios. In summary, driver’s demand for AR element information varies in different scenarios, as does their subjective attention to different information categories. This paper developed a design method and process based on the driver’s attention hierarchy, with significant implications for guiding AR-HUD design.","PeriodicalId":286146,"journal":{"name":"2023 14th International Conference on Mechanical and Intelligent Manufacturing Technologies (ICMIMT)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126190646","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 : 2023-05-26DOI: 10.1109/ICMIMT59138.2023.10200192
Hermias Nieuwoudt, Jacques C. Welgemoed, T. V. Niekerk, R. Phillips
The deployment of UAVs (Unmanned Aerial Vehicles) is becoming a standard practice to perform routine/labour-intensive tasks. These tasks include surveillance, construction monitoring, logistics, crop spraying etc. This work focuses on the application of UAVs in the security industry. Since the deployment of drones is becoming more common it is important to investigate how ground stations can be used to optimize the deployment of these drones. It was found that the recommended core functions of a ground control station should consist of the following: charging or replacing the battery of the drone after landing, compensating for the variation in the landing position, storing the drone safely, and lastly, being able to communicate with the drone. After reviewing existing systems, several concept designs were developed to perform the core functions of the docking station. After the concept design was completed, one overall design was selected and a plan to implement it was created. The docking station has since been built and tested to confirm that performance measures have been reached.
{"title":"Automated Charging and Docking Station for Security UAVs","authors":"Hermias Nieuwoudt, Jacques C. Welgemoed, T. V. Niekerk, R. Phillips","doi":"10.1109/ICMIMT59138.2023.10200192","DOIUrl":"https://doi.org/10.1109/ICMIMT59138.2023.10200192","url":null,"abstract":"The deployment of UAVs (Unmanned Aerial Vehicles) is becoming a standard practice to perform routine/labour-intensive tasks. These tasks include surveillance, construction monitoring, logistics, crop spraying etc. This work focuses on the application of UAVs in the security industry. Since the deployment of drones is becoming more common it is important to investigate how ground stations can be used to optimize the deployment of these drones. It was found that the recommended core functions of a ground control station should consist of the following: charging or replacing the battery of the drone after landing, compensating for the variation in the landing position, storing the drone safely, and lastly, being able to communicate with the drone. After reviewing existing systems, several concept designs were developed to perform the core functions of the docking station. After the concept design was completed, one overall design was selected and a plan to implement it was created. The docking station has since been built and tested to confirm that performance measures have been reached.","PeriodicalId":286146,"journal":{"name":"2023 14th International Conference on Mechanical and Intelligent Manufacturing Technologies (ICMIMT)","volume":"302 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128623288","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 : 2023-05-26DOI: 10.1109/ICMIMT59138.2023.10201123
A. B. Tatar, A. K. Tanyıldızı, B. Taşar
In the last decade, technological developments, products, and processes have been used in agricultural activities as well as in all production areas in our world and in our country. Increasing green areas by planting saplings, which is one of the agricultural activities, and preventing climate change by reducing CO2 rates are within the scope of priority areas and green agreements. Planting seedlings quickly and regularly on hundreds of acres of rough land requires high human labor and time and it is costly. It is aimed to carry out this process with a semi-autonomous sapling planting robot due to its advantages such as minimizing manpower activity and cost and providing the opportunity to work 24 hours if necessary. Within the scope of this study, a three-dimensional concept design of a tree planting robot, equipped with a crawler, camera and ultra-dimmer sensor and environmental sensing unit, capable of drilling sequential holes with a spiral soil digging mechanism with a fast and regular lane tracking was made.
{"title":"A Conceptual Design of Two DoF Crawler Tree Planting Robot with Helical Digging Arm","authors":"A. B. Tatar, A. K. Tanyıldızı, B. Taşar","doi":"10.1109/ICMIMT59138.2023.10201123","DOIUrl":"https://doi.org/10.1109/ICMIMT59138.2023.10201123","url":null,"abstract":"In the last decade, technological developments, products, and processes have been used in agricultural activities as well as in all production areas in our world and in our country. Increasing green areas by planting saplings, which is one of the agricultural activities, and preventing climate change by reducing CO2 rates are within the scope of priority areas and green agreements. Planting seedlings quickly and regularly on hundreds of acres of rough land requires high human labor and time and it is costly. It is aimed to carry out this process with a semi-autonomous sapling planting robot due to its advantages such as minimizing manpower activity and cost and providing the opportunity to work 24 hours if necessary. Within the scope of this study, a three-dimensional concept design of a tree planting robot, equipped with a crawler, camera and ultra-dimmer sensor and environmental sensing unit, capable of drilling sequential holes with a spiral soil digging mechanism with a fast and regular lane tracking was made.","PeriodicalId":286146,"journal":{"name":"2023 14th International Conference on Mechanical and Intelligent Manufacturing Technologies (ICMIMT)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130223271","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 : 2023-05-26DOI: 10.1109/ICMIMT59138.2023.10200037
Chen Sun, Guixue Cheng
According to statistics, more than 80% of the faults in hydropower units can be reflected in the vibration signal, so it is of great significance to effectively process the vibration signal signal of the hydropower unit for the safe operation of the hydropower unit. Empirical Mode Decomposition (EMD) is an adaptive signal decomposition method that breaks down data from high to low frequency into a series of Intrinsic Mode Function (IMF) and a margin. Local Mean Decomposition (LMD) solves the endpoint effect problem of EMD to some extent, but it cannot be ignored. Variational Mode Decomposition (VMD) solves the problem that EMD is drowned in the noise background in a noisy background, resulting in the inability to obtain the signal feature component. This paper mainly discusses the difference between EMD, LMD and VMD when processing vibration signals with noise of hydropower units.
{"title":"Discussion on the Difference in the Effect of Multiple Processing Methods of Vibration Signals of Hydropower Units","authors":"Chen Sun, Guixue Cheng","doi":"10.1109/ICMIMT59138.2023.10200037","DOIUrl":"https://doi.org/10.1109/ICMIMT59138.2023.10200037","url":null,"abstract":"According to statistics, more than 80% of the faults in hydropower units can be reflected in the vibration signal, so it is of great significance to effectively process the vibration signal signal of the hydropower unit for the safe operation of the hydropower unit. Empirical Mode Decomposition (EMD) is an adaptive signal decomposition method that breaks down data from high to low frequency into a series of Intrinsic Mode Function (IMF) and a margin. Local Mean Decomposition (LMD) solves the endpoint effect problem of EMD to some extent, but it cannot be ignored. Variational Mode Decomposition (VMD) solves the problem that EMD is drowned in the noise background in a noisy background, resulting in the inability to obtain the signal feature component. This paper mainly discusses the difference between EMD, LMD and VMD when processing vibration signals with noise of hydropower units.","PeriodicalId":286146,"journal":{"name":"2023 14th International Conference on Mechanical and Intelligent Manufacturing Technologies (ICMIMT)","volume":"260 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115876123","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 : 2023-05-26DOI: 10.1109/ICMIMT59138.2023.10199453
Amare Tesfaw Addis, O. Fatoba, T. Jen
In practical application, diesel engines cannot be overemphasized but the drawback of emissions needs to be taken care of. These emissions come in form of sulphur oxides, greenhouse gas, carbon monoxide, particulate matter and nitrogen oxides. Photochemical smog formation is attributed to nitrogen oxides which increases hydroxyl-radical concentrations and tropospheric ozone. The other emissions like sulphuric oxides lead to the formation of sulphuric acid which also leads to adverse effects on human respiratory organ. Carbon monoxide is toxic and can lead to blockage of oxygen in human blood and lead to death. This research is aimed at reducing nitrogen oxides emissions by enhancing and optimizing emission reduction method using phase change materials via experimental work in the literature review and computational fluid dynamic modelling and simulation. This study looks into the environmental impact of diesel emission from fuel combustion. The evaluation consists of a literature study, numerical modeling and simulations of phase change materials with analysis of system software in combustion analysis and comparing the result of combustion with adding the phase change materials. The comparison consists of engine performance, and emission reduction in percent (%). Hence, by introducing the paraffin wax near to the cylinder head of the exhaust port, nitrogen oxide emission was reduced by 45 %. This study would enhance experimental work by researchers by minute modification of the engine block in order to reduce thermal nitrogen oxides.
{"title":"Modelling and Simulation of Emission Reduction of Diesel Engine by Phase Change Materials (PCM)","authors":"Amare Tesfaw Addis, O. Fatoba, T. Jen","doi":"10.1109/ICMIMT59138.2023.10199453","DOIUrl":"https://doi.org/10.1109/ICMIMT59138.2023.10199453","url":null,"abstract":"In practical application, diesel engines cannot be overemphasized but the drawback of emissions needs to be taken care of. These emissions come in form of sulphur oxides, greenhouse gas, carbon monoxide, particulate matter and nitrogen oxides. Photochemical smog formation is attributed to nitrogen oxides which increases hydroxyl-radical concentrations and tropospheric ozone. The other emissions like sulphuric oxides lead to the formation of sulphuric acid which also leads to adverse effects on human respiratory organ. Carbon monoxide is toxic and can lead to blockage of oxygen in human blood and lead to death. This research is aimed at reducing nitrogen oxides emissions by enhancing and optimizing emission reduction method using phase change materials via experimental work in the literature review and computational fluid dynamic modelling and simulation. This study looks into the environmental impact of diesel emission from fuel combustion. The evaluation consists of a literature study, numerical modeling and simulations of phase change materials with analysis of system software in combustion analysis and comparing the result of combustion with adding the phase change materials. The comparison consists of engine performance, and emission reduction in percent (%). Hence, by introducing the paraffin wax near to the cylinder head of the exhaust port, nitrogen oxide emission was reduced by 45 %. This study would enhance experimental work by researchers by minute modification of the engine block in order to reduce thermal nitrogen oxides.","PeriodicalId":286146,"journal":{"name":"2023 14th International Conference on Mechanical and Intelligent Manufacturing Technologies (ICMIMT)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130241742","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 : 2023-05-26DOI: 10.1109/ICMIMT59138.2023.10200996
Siwen Yao, Haiyan Wang, Xinyue Miao, Xian Li
In the face of a large amount of information in the command system, the commander of emergency relief needs to make efficient decisions. They get distracted when multitasking in parallel or when there is external interference. Typical task scenarios with visual distraction tasks and cognitive distraction tasks are selected to explore whether these two distraction will affect the commander’s performance. Ten participants were recruited to complete the experiment. ANOVA was used to determine the difference between undistracted, distracted, and distracted with feedback, followed by LSD. Experimental results show that visual distraction and cognitive distraction did affect the subjects’ performance, resulting in an increase in the completion time of the primary task and a decrease in the accuracy rate. The feedback for distraction was helpful in improving the performance. Based on the conclusion of this experiment, we suggest that the feedback of popups and dynamic icons could be used to remind users when designing interface and system development based on visual distraction. When based on cognitive distraction, the feedback of dynamic icons and sound effects could be used to remind users.
{"title":"Research on the Effects of Distraction-Based Feedback","authors":"Siwen Yao, Haiyan Wang, Xinyue Miao, Xian Li","doi":"10.1109/ICMIMT59138.2023.10200996","DOIUrl":"https://doi.org/10.1109/ICMIMT59138.2023.10200996","url":null,"abstract":"In the face of a large amount of information in the command system, the commander of emergency relief needs to make efficient decisions. They get distracted when multitasking in parallel or when there is external interference. Typical task scenarios with visual distraction tasks and cognitive distraction tasks are selected to explore whether these two distraction will affect the commander’s performance. Ten participants were recruited to complete the experiment. ANOVA was used to determine the difference between undistracted, distracted, and distracted with feedback, followed by LSD. Experimental results show that visual distraction and cognitive distraction did affect the subjects’ performance, resulting in an increase in the completion time of the primary task and a decrease in the accuracy rate. The feedback for distraction was helpful in improving the performance. Based on the conclusion of this experiment, we suggest that the feedback of popups and dynamic icons could be used to remind users when designing interface and system development based on visual distraction. When based on cognitive distraction, the feedback of dynamic icons and sound effects could be used to remind users.","PeriodicalId":286146,"journal":{"name":"2023 14th International Conference on Mechanical and Intelligent Manufacturing Technologies (ICMIMT)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130272616","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 : 2023-05-26DOI: 10.1109/ICMIMT59138.2023.10199267
Liangquan Xu, Jianrun Zhang, Cheng Lin, Hao Peng
In order to improve the structural stiffness and vibration frequency of industrial robots, a robot structure optimization method based on multi-objective dimensional optimization method is proposed in this paper. The method firstly establishes the finite element model of the whole robot considering the torsional and overturning stiffness of each joint, corrects the joint stiffness to reduce the error through the modal test alignment method, and obtains the inherent frequency and modal vibration pattern of each order of the robot. Then, based on this model, the sensitivity analysis of the optimized variables is performed, and the stiffness of the rotating seat is the most influential factor on the stiffness of the robot. Finally, the target drive size optimization method is used to optimize the structure size of the turntable. The method was successfully applied to the analysis and optimization of a 220 kg multifunctional robot for handling and welding, and the results verified the usability and effectiveness of the analysis and optimization method.
{"title":"Optimized Design of Dynamic Stiffness of 6-DOF Tandem Robot Based on Response Surface Method","authors":"Liangquan Xu, Jianrun Zhang, Cheng Lin, Hao Peng","doi":"10.1109/ICMIMT59138.2023.10199267","DOIUrl":"https://doi.org/10.1109/ICMIMT59138.2023.10199267","url":null,"abstract":"In order to improve the structural stiffness and vibration frequency of industrial robots, a robot structure optimization method based on multi-objective dimensional optimization method is proposed in this paper. The method firstly establishes the finite element model of the whole robot considering the torsional and overturning stiffness of each joint, corrects the joint stiffness to reduce the error through the modal test alignment method, and obtains the inherent frequency and modal vibration pattern of each order of the robot. Then, based on this model, the sensitivity analysis of the optimized variables is performed, and the stiffness of the rotating seat is the most influential factor on the stiffness of the robot. Finally, the target drive size optimization method is used to optimize the structure size of the turntable. The method was successfully applied to the analysis and optimization of a 220 kg multifunctional robot for handling and welding, and the results verified the usability and effectiveness of the analysis and optimization method.","PeriodicalId":286146,"journal":{"name":"2023 14th International Conference on Mechanical and Intelligent Manufacturing Technologies (ICMIMT)","volume":"71 3","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131578811","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 : 2023-05-26DOI: 10.1109/ICMIMT59138.2023.10199815
Benjamin Schulze, Benjamin Georg Michaelis, Frederick Blome
The need to reduce greenhouse gases during the production and operation of airplanes presents a challenge to the worldwide aviation industry. The introduction of lightweight materials such as carbon fibre reinforced polymer (CFRP) over the last decades has led to new requirements in the overall process chain. The inhomogeneous structure of CFRP-components causes surface defects during the final contour milling like delamination, fibre fraying and fibre splintering. Based on a manual inspection specialized workers check whether a predefined defect tolerance has been exceeded. The manual inspection and individual post-processing of surface defects takes place while the machined component remains in the workspace of the machine. The current processing and quality inspection of CFRP-components has led to non-productive secondary times and because of this, the energy-consumption for every component produced is higher than necessary. This paper presents an investigation of an advanced methodology for the automated inspection of machined CFRP-edges. During the machining of CFRP-components, a thermal camera acquires images of the milled edges. These images are used to compare an idealized temperature profile within a workpiece with the resulting profile including surface defects. The comparison of the ideal and real temperature profile makes it possible to isolate the surface defects and to measure them.
{"title":"Investigation of an Advanced Methodology for Automated Quality Inspection of milled CFRP-Edges through the Use of Image Processing of Infrared Images","authors":"Benjamin Schulze, Benjamin Georg Michaelis, Frederick Blome","doi":"10.1109/ICMIMT59138.2023.10199815","DOIUrl":"https://doi.org/10.1109/ICMIMT59138.2023.10199815","url":null,"abstract":"The need to reduce greenhouse gases during the production and operation of airplanes presents a challenge to the worldwide aviation industry. The introduction of lightweight materials such as carbon fibre reinforced polymer (CFRP) over the last decades has led to new requirements in the overall process chain. The inhomogeneous structure of CFRP-components causes surface defects during the final contour milling like delamination, fibre fraying and fibre splintering. Based on a manual inspection specialized workers check whether a predefined defect tolerance has been exceeded. The manual inspection and individual post-processing of surface defects takes place while the machined component remains in the workspace of the machine. The current processing and quality inspection of CFRP-components has led to non-productive secondary times and because of this, the energy-consumption for every component produced is higher than necessary. This paper presents an investigation of an advanced methodology for the automated inspection of machined CFRP-edges. During the machining of CFRP-components, a thermal camera acquires images of the milled edges. These images are used to compare an idealized temperature profile within a workpiece with the resulting profile including surface defects. The comparison of the ideal and real temperature profile makes it possible to isolate the surface defects and to measure them.","PeriodicalId":286146,"journal":{"name":"2023 14th International Conference on Mechanical and Intelligent Manufacturing Technologies (ICMIMT)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133538983","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 : 2023-05-26DOI: 10.1109/ICMIMT59138.2023.10200784
Guichao Yang, Zhiying Shi
In this work, a high-performance multilayer neurocontroller is integrated for unmanned aircraft systems (UASs) with unknown modeling uncertainties. Specially, large endogenous disturbances and exogenous disturbances can be online compensated feed forwardly. Notably, the online learning ability of the multilayer neural networks is strengthened via the weight updating laws composed of different errors. By introducing the second-order filter based backstepping procedure, the integrated algorithm not only protects from the adverse influences generated by tedious derivation iteration, but also possesses a simple scheme for implementation. Additionally, the practicability of the integrated control algorithm is validated on UASs which may suffer from largely unknown endogenous uncertainties and exogenous disturbances via comparative application results.
{"title":"Multilayer Neural Control of Aircrafts With Disturbance Compensation","authors":"Guichao Yang, Zhiying Shi","doi":"10.1109/ICMIMT59138.2023.10200784","DOIUrl":"https://doi.org/10.1109/ICMIMT59138.2023.10200784","url":null,"abstract":"In this work, a high-performance multilayer neurocontroller is integrated for unmanned aircraft systems (UASs) with unknown modeling uncertainties. Specially, large endogenous disturbances and exogenous disturbances can be online compensated feed forwardly. Notably, the online learning ability of the multilayer neural networks is strengthened via the weight updating laws composed of different errors. By introducing the second-order filter based backstepping procedure, the integrated algorithm not only protects from the adverse influences generated by tedious derivation iteration, but also possesses a simple scheme for implementation. Additionally, the practicability of the integrated control algorithm is validated on UASs which may suffer from largely unknown endogenous uncertainties and exogenous disturbances via comparative application results.","PeriodicalId":286146,"journal":{"name":"2023 14th International Conference on Mechanical and Intelligent Manufacturing Technologies (ICMIMT)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127813204","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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