Pub Date : 2023-05-26DOI: 10.1109/ICMIMT59138.2023.10201224
Cheng Lin, Jianrun Zhang, Liangquan Xu, Hao Peng
Heavy duty gearbox’s operating characteristic frequency is low. At present, various methods used to monitor the operation condition and analyze faults have their own traits and shortcomings. To realize the heavy duty gearbox’s operation condition monitoring and fault analysis, acoustic digital twin technology was proposed. Using noncontact far field acoustic signals, the operation condition can be monitored and faults can be analyzed. This new technology was characterized by locating and analyzing faults accurately. To improve the accuracy of the digital twin model, the contact stiffness model of the joint surface was further deduced. Finally, the frequency responses of sound pressure under different faults were compared and analyzed. It was shown that the proposed acoustic digital twin technology can be used to monitor the heavy-duty gearbox’s operation condition and analyze faults. Also, the results showed that this technology was feasible and accurate.
{"title":"Application of Acoustic Digital Twin Model for Fault Monitoring of Heavy Duty Gearbox","authors":"Cheng Lin, Jianrun Zhang, Liangquan Xu, Hao Peng","doi":"10.1109/ICMIMT59138.2023.10201224","DOIUrl":"https://doi.org/10.1109/ICMIMT59138.2023.10201224","url":null,"abstract":"Heavy duty gearbox’s operating characteristic frequency is low. At present, various methods used to monitor the operation condition and analyze faults have their own traits and shortcomings. To realize the heavy duty gearbox’s operation condition monitoring and fault analysis, acoustic digital twin technology was proposed. Using noncontact far field acoustic signals, the operation condition can be monitored and faults can be analyzed. This new technology was characterized by locating and analyzing faults accurately. To improve the accuracy of the digital twin model, the contact stiffness model of the joint surface was further deduced. Finally, the frequency responses of sound pressure under different faults were compared and analyzed. It was shown that the proposed acoustic digital twin technology can be used to monitor the heavy-duty gearbox’s operation condition and analyze faults. Also, the results showed that this technology was feasible and accurate.","PeriodicalId":286146,"journal":{"name":"2023 14th International Conference on Mechanical and Intelligent Manufacturing Technologies (ICMIMT)","volume":"11 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":"125313248","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/ICMIMT59138.2023.10199510
Niko Nagengast, Tizian Scharl, M. Frisch, C. Neuber, H. Ruckdäschel, H. Schmidt, F. Fuss
Simulation modeling takes up an important role in virtual product development in terms of cost and time improvement. Due to the anisotropic characteristics of the Fused Filament Fabrication (FFF) process, material models with bulk properties for Finite-Element-Analysis (FEA) lack accuracy. This problem was addressed in this research by tension (DIN ISO 527) and compression (DIN ISO 604) tests of polypropylene and elastic polypropylene filament for FFF in 0° and 90° printing directions. Furthermore, a recycling cycle for both filaments was carried out and reassessed. Based on the test results a transversely isotropic material model with bilinear hardening was generated and validated for the standard polypropylene filament with a three-point bending test (DIN ISO 178). The material model was capable of reasonably simulating the component behavior for the complex load scenarios up to a strain of 15 %. The combination of a cost, time and resource-saving simulation approach with a circular material strategy proposes a way for fusing performance and sustainability in the field of Additive Manufacturing (AM). The combination of recycling processes and material models, both assessed and verified experimentally, respectively, will help adapt the product geometry to the material properties modified from recycling.
在虚拟产品开发中，仿真建模在降低成本和缩短开发时间方面起着重要的作用。由于熔丝制造(FFF)过程的各向异性特性，具有块体特性的材料模型在有限元分析(FEA)中缺乏准确性。本研究通过在0°和90°印刷方向上对FFF用聚丙烯和弹性聚丙烯长丝进行拉伸(DIN ISO 527)和压缩(DIN ISO 604)试验，解决了这一问题。此外，对这两种灯丝进行了回收循环并重新评估。根据试验结果，建立了具有双线性硬化的横向各向同性材料模型，并对标准聚丙烯长丝进行了三点弯曲试验(DIN ISO 178)。该材料模型能够合理地模拟复杂载荷情况下的构件行为，应变可达15%。将节省成本、时间和资源的仿真方法与循环材料策略相结合，提出了一种在增材制造(AM)领域融合性能和可持续性的方法。回收过程和材料模型的结合，分别经过实验评估和验证，将有助于使产品几何形状适应回收后修改的材料特性。
{"title":"Design for Sustainable Additive Manufacturing (DfsAM): Preperation and Validation of a Transversely Isotropic Simulation Model for FFF Components Made from Virgin and Recycled Polypropylene Filaments","authors":"Niko Nagengast, Tizian Scharl, M. Frisch, C. Neuber, H. Ruckdäschel, H. Schmidt, F. Fuss","doi":"10.1109/ICMIMT59138.2023.10199510","DOIUrl":"https://doi.org/10.1109/ICMIMT59138.2023.10199510","url":null,"abstract":"Simulation modeling takes up an important role in virtual product development in terms of cost and time improvement. Due to the anisotropic characteristics of the Fused Filament Fabrication (FFF) process, material models with bulk properties for Finite-Element-Analysis (FEA) lack accuracy. This problem was addressed in this research by tension (DIN ISO 527) and compression (DIN ISO 604) tests of polypropylene and elastic polypropylene filament for FFF in 0° and 90° printing directions. Furthermore, a recycling cycle for both filaments was carried out and reassessed. Based on the test results a transversely isotropic material model with bilinear hardening was generated and validated for the standard polypropylene filament with a three-point bending test (DIN ISO 178). The material model was capable of reasonably simulating the component behavior for the complex load scenarios up to a strain of 15 %. The combination of a cost, time and resource-saving simulation approach with a circular material strategy proposes a way for fusing performance and sustainability in the field of Additive Manufacturing (AM). The combination of recycling processes and material models, both assessed and verified experimentally, respectively, will help adapt the product geometry to the material properties modified from recycling.","PeriodicalId":286146,"journal":{"name":"2023 14th International Conference on Mechanical and Intelligent Manufacturing Technologies (ICMIMT)","volume":"31 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":"130693047","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/ICMIMT59138.2023.10199949
Delani Favours Ntobela, L. Tartibu, T. Kunene
Water is the most basic and important substance on earth. Every human being is fully dependent on water to survive, eat and live healthily. Many people from developing countries are struggling daily to have access to potable water and sustain their lives. In this paper, a purifier system was developed to address the poor quality of water in a rural community (Dumezulu village). Solar photovoltaic (PV) cells have been selected to power the proposed system. The Reverse Osmosis (RO) method was adopted to remove contaminants during the treatment process. This system comprises solar PV modules, a structural mounting frame, centrifugal and vertical water pumps, activated carbon and sand filters, micron filter filters, RO membrane filters, a flywheel energy storage system (FESS), an electrical Distribution Board (DB), a chemical dosing pump, and a water distribution piping.
{"title":"Design and Development of a Water Purifier System","authors":"Delani Favours Ntobela, L. Tartibu, T. Kunene","doi":"10.1109/ICMIMT59138.2023.10199949","DOIUrl":"https://doi.org/10.1109/ICMIMT59138.2023.10199949","url":null,"abstract":"Water is the most basic and important substance on earth. Every human being is fully dependent on water to survive, eat and live healthily. Many people from developing countries are struggling daily to have access to potable water and sustain their lives. In this paper, a purifier system was developed to address the poor quality of water in a rural community (Dumezulu village). Solar photovoltaic (PV) cells have been selected to power the proposed system. The Reverse Osmosis (RO) method was adopted to remove contaminants during the treatment process. This system comprises solar PV modules, a structural mounting frame, centrifugal and vertical water pumps, activated carbon and sand filters, micron filter filters, RO membrane filters, a flywheel energy storage system (FESS), an electrical Distribution Board (DB), a chemical dosing pump, and a water distribution piping.","PeriodicalId":286146,"journal":{"name":"2023 14th International Conference on Mechanical and Intelligent Manufacturing Technologies (ICMIMT)","volume":"57 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":"128139435","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}
In order to better guide the design of web interfaces, this study improved existing calculation formulas based on the research findings of aesthetic measures and proposed a set of interface aesthetic measures that can be used for web interfaces, including measures of balance, proportion, element overlap, and density. MATLAB 2020a was used to measure the aesthetic measures of 16 web interfaces, and a questionnaire was used to obtain participants’ subjective aesthetic perception of the web interfaces. The experimental results showed that measure of grayscale balance and measure of horizontal color balance were positively significantly correlated with subjective balance. Measure of proportion of layer objects to interface frame was significantly positively correlated with subjective proportionality, while measure of proportion of layer objects to interface layout was negatively correlated. There was a significant positive correlation between measure of grayscale balance, measure of horizontal color balance, measure of density and subjective overall aesthetics. Additionally, measure of element overlap was significantly negatively correlated with subjective harmony.
{"title":"An Appraisal Method for Web Interfaces Based on Aesthetic Measurement","authors":"Lingna Zhang, Jiawei Jiao, Chenhao Li, Jinzhen Dou, Chen Xue","doi":"10.1109/ICMIMT59138.2023.10200076","DOIUrl":"https://doi.org/10.1109/ICMIMT59138.2023.10200076","url":null,"abstract":"In order to better guide the design of web interfaces, this study improved existing calculation formulas based on the research findings of aesthetic measures and proposed a set of interface aesthetic measures that can be used for web interfaces, including measures of balance, proportion, element overlap, and density. MATLAB 2020a was used to measure the aesthetic measures of 16 web interfaces, and a questionnaire was used to obtain participants’ subjective aesthetic perception of the web interfaces. The experimental results showed that measure of grayscale balance and measure of horizontal color balance were positively significantly correlated with subjective balance. Measure of proportion of layer objects to interface frame was significantly positively correlated with subjective proportionality, while measure of proportion of layer objects to interface layout was negatively correlated. There was a significant positive correlation between measure of grayscale balance, measure of horizontal color balance, measure of density and subjective overall aesthetics. Additionally, measure of element overlap was significantly negatively correlated with subjective harmony.","PeriodicalId":286146,"journal":{"name":"2023 14th International Conference on Mechanical and Intelligent Manufacturing Technologies (ICMIMT)","volume":"235 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":"114208293","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/ICMIMT59138.2023.10201099
Muhammad Sibtain, Han Liang, Md Rasel Uddin, Muhammad Asim Mond, A. Ansari, Muhammad Zia Ullah Khan
Waste heat recovery technologies from engine exhaust are promising solutions for increasing energy efficiency, reducing fuel consumption, and decreasing greenhouse gas emissions. Heat exchangers play a crucial role in waste heat recovery from engine exhaust. In this study, a numerical simulation was carried out to investigate the performance of counter shell and tube heat exchanger with and without inner fin geometry. A CFD analysis showed that the addition of inner fins in heat exchanger improved the heat transfer performance of heat exchanger. Further, the use of GO/water nanofluid is effective to reduce the exhaust air temperature and increase the overall effectiveness of heat exchanger.
{"title":"Investigating the Heat Transfer Characteristics of Fin-prolonged Heat Exchanger for Waste Heat Recovery","authors":"Muhammad Sibtain, Han Liang, Md Rasel Uddin, Muhammad Asim Mond, A. Ansari, Muhammad Zia Ullah Khan","doi":"10.1109/ICMIMT59138.2023.10201099","DOIUrl":"https://doi.org/10.1109/ICMIMT59138.2023.10201099","url":null,"abstract":"Waste heat recovery technologies from engine exhaust are promising solutions for increasing energy efficiency, reducing fuel consumption, and decreasing greenhouse gas emissions. Heat exchangers play a crucial role in waste heat recovery from engine exhaust. In this study, a numerical simulation was carried out to investigate the performance of counter shell and tube heat exchanger with and without inner fin geometry. A CFD analysis showed that the addition of inner fins in heat exchanger improved the heat transfer performance of heat exchanger. Further, the use of GO/water nanofluid is effective to reduce the exhaust air temperature and increase the overall effectiveness of heat exchanger.","PeriodicalId":286146,"journal":{"name":"2023 14th International Conference on Mechanical and Intelligent Manufacturing Technologies (ICMIMT)","volume":"133 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":"134523330","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/ICMIMT59138.2023.10199605
W. Zhang, Beibei Sun
Based on the stress-strength interference theory, a reliability analysis model for bending fatigue of spiral bevel gears was established using the first order second moment method and the Monte Carlo simulation method, respectively. The distribution rules of bending stress and bending strength were obtained. The reliability results verified the accuracy of the reliability simulation calculation model established using the Monte Carlo method; Based on the first order second moment method, reliability sensitivity analysis was conducted on the mean value and standard deviation of the basic random variables that affect the reliability of bending fatigue. The results shows the degree and trend of the impact of different factors on reliability, and the increase of the standard deviation of each random variable would reduce the reliability, providing theoretical guidance and optimization direction for the subsequent reliability optimization design.
{"title":"Reliability Analysis of Bending Fatigue of Spiral Bevel Gears Based on Stress-Strength Interference Theory","authors":"W. Zhang, Beibei Sun","doi":"10.1109/ICMIMT59138.2023.10199605","DOIUrl":"https://doi.org/10.1109/ICMIMT59138.2023.10199605","url":null,"abstract":"Based on the stress-strength interference theory, a reliability analysis model for bending fatigue of spiral bevel gears was established using the first order second moment method and the Monte Carlo simulation method, respectively. The distribution rules of bending stress and bending strength were obtained. The reliability results verified the accuracy of the reliability simulation calculation model established using the Monte Carlo method; Based on the first order second moment method, reliability sensitivity analysis was conducted on the mean value and standard deviation of the basic random variables that affect the reliability of bending fatigue. The results shows the degree and trend of the impact of different factors on reliability, and the increase of the standard deviation of each random variable would reduce the reliability, providing theoretical guidance and optimization direction for the subsequent reliability optimization design.","PeriodicalId":286146,"journal":{"name":"2023 14th International Conference on Mechanical and Intelligent Manufacturing Technologies (ICMIMT)","volume":"54 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":"133391983","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/icmimt59138.2023.10199226
{"title":"Copyright Page","authors":"","doi":"10.1109/icmimt59138.2023.10199226","DOIUrl":"https://doi.org/10.1109/icmimt59138.2023.10199226","url":null,"abstract":"","PeriodicalId":286146,"journal":{"name":"2023 14th International Conference on Mechanical and Intelligent Manufacturing Technologies (ICMIMT)","volume":"16 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":"133871981","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/ICMIMT59138.2023.10199946
Rey Anthony Bok, D. Engo, Christian Gao, Syvelle Angeli Santiago, J. Honra, Gawayne Escalona, R. Tayactac, Ricky D. Umali
This study will evaluate the different designs of roof spoilers on various light trucks with varying speeds using Computational Fluid Dynamics (CFD); the Mitsubishi L300, the Kia K2500, and the Hyundai H100 are the light-truck models that will be examined for this study. These vehicles will be created using the 3D Modelling software Fusion360. Each sample will be equipped with different designs of Roof Spoilers and then subjected to a Computational Fluid Analysis (CFD) using ANSYS Fluent. The parameters used for evaluation are the drag coefficient two and its force counterpart. The results from the assessment will be compared between the non-equipped (Base version) and the models equipped with roof spoiler model (RSM). The results show that RSM’s curvature would perform better than the planar version. The significant improvement of curvature RSM ranges from about five to twenty percent, while planar RSM ranges from up to fifteen percent, varying from different trucks. L300 WT has the lowest improvement, with a peak of eleven percent, followed by H100, with a peak of thirteen percent. The K2500 has the highest peak of improvement, gaining up to twenty percent. Regardless of their model, all the RSM were able to improve the aerodynamic performance of the different light trucks.
{"title":"Evaluation of the Effects of the Application of Roof Spoilers for Light Trucks using Computational Fluid Dynamics (CFD)","authors":"Rey Anthony Bok, D. Engo, Christian Gao, Syvelle Angeli Santiago, J. Honra, Gawayne Escalona, R. Tayactac, Ricky D. Umali","doi":"10.1109/ICMIMT59138.2023.10199946","DOIUrl":"https://doi.org/10.1109/ICMIMT59138.2023.10199946","url":null,"abstract":"This study will evaluate the different designs of roof spoilers on various light trucks with varying speeds using Computational Fluid Dynamics (CFD); the Mitsubishi L300, the Kia K2500, and the Hyundai H100 are the light-truck models that will be examined for this study. These vehicles will be created using the 3D Modelling software Fusion360. Each sample will be equipped with different designs of Roof Spoilers and then subjected to a Computational Fluid Analysis (CFD) using ANSYS Fluent. The parameters used for evaluation are the drag coefficient two and its force counterpart. The results from the assessment will be compared between the non-equipped (Base version) and the models equipped with roof spoiler model (RSM). The results show that RSM’s curvature would perform better than the planar version. The significant improvement of curvature RSM ranges from about five to twenty percent, while planar RSM ranges from up to fifteen percent, varying from different trucks. L300 WT has the lowest improvement, with a peak of eleven percent, followed by H100, with a peak of thirteen percent. The K2500 has the highest peak of improvement, gaining up to twenty percent. Regardless of their model, all the RSM were able to improve the aerodynamic performance of the different light trucks.","PeriodicalId":286146,"journal":{"name":"2023 14th International Conference on Mechanical and Intelligent Manufacturing Technologies (ICMIMT)","volume":"10 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":"129646775","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/ICMIMT59138.2023.10199447
L. Lebea, T. Gaonnwe
The increased usage of 3D printers, has made it possible to fabricate a complex shape without compromising the structural integrity of the component. However, the application of this technology to replace existing design, especially in the area of fluid mechanics, is still a challenge. The aim of the study is to evaluate the efficiency of the 3D printed Pelton turbine wheel at various pressure head as compared to the traditionally fabricated Pelton turbine. The design, fabrication and testing of the turbine blade were performed at University of South Africa, with the aim of replacing the existing turbine wheel. The tests were carried out at 0.5 kPa, 1 kPa and 1.5 kPa pressure heads. The results shows that the efficiency Pelton wheel turbine of metal and draft material are above 50 % and those of clear is below 50 %. The speed of the system increase as the pressure increase for metal and draft, however, for the turbine wheel of clear material it increases and decreases.
{"title":"Performance Analysis of 3D Printed Pelton Wheel Turbine at Various Pressure Heads","authors":"L. Lebea, T. Gaonnwe","doi":"10.1109/ICMIMT59138.2023.10199447","DOIUrl":"https://doi.org/10.1109/ICMIMT59138.2023.10199447","url":null,"abstract":"The increased usage of 3D printers, has made it possible to fabricate a complex shape without compromising the structural integrity of the component. However, the application of this technology to replace existing design, especially in the area of fluid mechanics, is still a challenge. The aim of the study is to evaluate the efficiency of the 3D printed Pelton turbine wheel at various pressure head as compared to the traditionally fabricated Pelton turbine. The design, fabrication and testing of the turbine blade were performed at University of South Africa, with the aim of replacing the existing turbine wheel. The tests were carried out at 0.5 kPa, 1 kPa and 1.5 kPa pressure heads. The results shows that the efficiency Pelton wheel turbine of metal and draft material are above 50 % and those of clear is below 50 %. The speed of the system increase as the pressure increase for metal and draft, however, for the turbine wheel of clear material it increases and decreases.","PeriodicalId":286146,"journal":{"name":"2023 14th International Conference on Mechanical and Intelligent Manufacturing Technologies (ICMIMT)","volume":"50 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":"133148023","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/ICMIMT59138.2023.10200756
C. Sanama, X. Xia
A multivariable MPC is developed on a VC system to control simultaneously the superheat and evaporator pressure. A nonlinear control-oriented model is implemented with 12 state variables and 2 inputs. The nonlinear model is linearized around a carefully selected steady state point so that MPC could be implemented to compute optimal expansion valve opening and compressor speed with measured feedbacks of superheat and evaporator pressure. The control-oriented model and MPC are implemented on Simulink using 4 interconnected subsystems namely, the VC system, the MPC system, the reference system and the environment. The coupling effects between superheat and evaporator pressure are considered. MPC performance was satisfactory in terms of disturbance rejection and reference tracking whilst considering the coupling effects between superheat and evaporator pressure.
{"title":"Control-oriented Modelling for Multivariable Control of Refrigerant Dynamics in Vapor Compression Systems","authors":"C. Sanama, X. Xia","doi":"10.1109/ICMIMT59138.2023.10200756","DOIUrl":"https://doi.org/10.1109/ICMIMT59138.2023.10200756","url":null,"abstract":"A multivariable MPC is developed on a VC system to control simultaneously the superheat and evaporator pressure. A nonlinear control-oriented model is implemented with 12 state variables and 2 inputs. The nonlinear model is linearized around a carefully selected steady state point so that MPC could be implemented to compute optimal expansion valve opening and compressor speed with measured feedbacks of superheat and evaporator pressure. The control-oriented model and MPC are implemented on Simulink using 4 interconnected subsystems namely, the VC system, the MPC system, the reference system and the environment. The coupling effects between superheat and evaporator pressure are considered. MPC performance was satisfactory in terms of disturbance rejection and reference tracking whilst considering the coupling effects between superheat and evaporator pressure.","PeriodicalId":286146,"journal":{"name":"2023 14th International Conference on Mechanical and Intelligent Manufacturing Technologies (ICMIMT)","volume":"76 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":"126201509","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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