This paper proposes the design and implementation of torque control and torque estimation for an electric hand-tool. This hand-tool does not require any torque transducer or any Hall-effect sensor. Only some low-cost resistances are used to measure the stator currents of a brushless DC motor, which is used to drive the hand-tool. Novel 3-phase current commands are proposed here to obtain greater torque than traditional 3-phase, square-wave current commands. The output torque of the hand-tool can be estimated and displayed by an LED display. A PI controller is used to achieve the current-loop control. A digital signal processor, TMS-320-F2808 that was manufactured by Texas Instruments, is used to execute the control and estimation algorithms. Experimental results show the correctness and feasibility of the proposed methods.
{"title":"Design and Implementation of Torque Control and Estimation for an Electric Hand-Tool","authors":"Tian‐Hua Liu, C. Peng","doi":"10.18282/fme.v2i2.801","DOIUrl":"https://doi.org/10.18282/fme.v2i2.801","url":null,"abstract":"This paper proposes the design and implementation of torque control and torque estimation for an electric hand-tool. This hand-tool does not require any torque transducer or any Hall-effect sensor. Only some low-cost resistances are used to measure the stator currents of a brushless DC motor, which is used to drive the hand-tool. Novel 3-phase current commands are proposed here to obtain greater torque than traditional 3-phase, square-wave current commands. The output torque of the hand-tool can be estimated and displayed by an LED display. A PI controller is used to achieve the current-loop control. A digital signal processor, TMS-320-F2808 that was manufactured by Texas Instruments, is used to execute the control and estimation algorithms. Experimental results show the correctness and feasibility of the proposed methods.","PeriodicalId":230486,"journal":{"name":"Frontiers of Mechatronical Engineering","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-06-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124200947","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}
Chengyu Wang, F. Tian, Shanjie Zhao, Guansiwei Shang, Yuteng Ma, D. Chen
Provided a design scheme of a lifting PTZ with high-scalability for detecting search and rescue robots based on the analysis and reference o f various lifting mechanisms at home and abroad. It proposed a rigid-flexible dual-property automatic lifting mechanism transmission scheme which adopt s a roll-up spring as a supporting mechanism, a gear and a sprocket as a transmission mechanism, and a telescopic rod as an auxiliary supporting mechanism, which provides a new solution for the disadvantages of the traditional lifting mechanisms with large original volume and poor telescopic performance. Through the actual test, the mechanism can raise to the target stroke of 2 meters in 60s smoothly and widen the field of view of the image capturing device effectively based on the detection and rescue robot, which improves the ability of passing the narrow space and rescuing obviously.
{"title":"Design of Monitoring PTZ with High Scalability","authors":"Chengyu Wang, F. Tian, Shanjie Zhao, Guansiwei Shang, Yuteng Ma, D. Chen","doi":"10.18282/fme.v2i1.839","DOIUrl":"https://doi.org/10.18282/fme.v2i1.839","url":null,"abstract":"Provided a design scheme of a lifting PTZ with high-scalability for detecting search and rescue robots based on the analysis and reference o f various lifting mechanisms at home and abroad. It proposed a rigid-flexible dual-property automatic lifting mechanism transmission scheme which adopt s a roll-up spring as a supporting mechanism, a gear and a sprocket as a transmission mechanism, and a telescopic rod as an auxiliary supporting mechanism, which provides a new solution for the disadvantages of the traditional lifting mechanisms with large original volume and poor telescopic performance. Through the actual test, the mechanism can raise to the target stroke of 2 meters in 60s smoothly and widen the field of view of the image capturing device effectively based on the detection and rescue robot, which improves the ability of passing the narrow space and rescuing obviously.","PeriodicalId":230486,"journal":{"name":"Frontiers of Mechatronical Engineering","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126616704","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 view of the security requirements of the power supply of the airport flight information system and the continuous improvement of the national energy conservation and environmental protection requirements, this paper proposes that the UPS power supply of the flight information system should adopt the mode of parallel operation. In addition, the terminal T2 of Xi'an Xianyang International Airport was successfully renovated and operated, which improved the power supply reliability, energy conservation and environmental protection of the flight information system. This paper comprehensively analyzes the cause and effect. Changing the operation mode of UPS effectively improves the power supply reliability of flight information system of Xi'an Xianyang International Airport and reduces energy consumption.
{"title":"Airport UPS Run in Parallel to Improve Power Supply Reliability and Energy Saving of Flight Information System","authors":"Ganghua Yao","doi":"10.18282/fme.v2i1.818","DOIUrl":"https://doi.org/10.18282/fme.v2i1.818","url":null,"abstract":"In view of the security requirements of the power supply of the airport flight information system and the continuous improvement of the national energy conservation and environmental protection requirements, this paper proposes that the UPS power supply of the flight information system should adopt the mode of parallel operation. In addition, the terminal T2 of Xi'an Xianyang International Airport was successfully renovated and operated, which improved the power supply reliability, energy conservation and environmental protection of the flight information system. This paper comprehensively analyzes the cause and effect. Changing the operation mode of UPS effectively improves the power supply reliability of flight information system of Xi'an Xianyang International Airport and reduces energy consumption.","PeriodicalId":230486,"journal":{"name":"Frontiers of Mechatronical Engineering","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125802335","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 this paper, aerodynamics coefficients of Boeing 737-300 were calculated using VLM (vortex lattice method) theory. The wing was assumed to be planar and was divided into 6×6 panels, which were in the trapezoid shape. Aerodynamics lifting and moment coefficients were calculated. Also, center of pressure location was found using data from VLM and wing geometry. Comparisons between literature, finite wing theory and VLM theory were done. It was found that maximum lifting coefficient error between literature and VLM was about 4.0%. Moreover, that between finite wing theory and VLM was about 2.2%. Center of pressure location error between finite wing theory and VLM was about 0.5%.
{"title":"On Boeing 737 – 300 Wing Aerodynamics Calculations Based on VLM Theory","authors":"J. Nagler","doi":"10.18282/FME.V1I1.604","DOIUrl":"https://doi.org/10.18282/FME.V1I1.604","url":null,"abstract":"In this paper, aerodynamics coefficients of Boeing 737-300 were calculated using VLM (vortex lattice method) theory. The wing was assumed to be planar and was divided into 6×6 panels, which were in the trapezoid shape. Aerodynamics lifting and moment coefficients were calculated. Also, center of pressure location was found using data from VLM and wing geometry. Comparisons between literature, finite wing theory and VLM theory were done. It was found that maximum lifting coefficient error between literature and VLM was about 4.0%. Moreover, that between finite wing theory and VLM was about 2.2%. Center of pressure location error between finite wing theory and VLM was about 0.5%.","PeriodicalId":230486,"journal":{"name":"Frontiers of Mechatronical Engineering","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134640231","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}
R. Kandasamy, Nur Atikah bt Adnan, Mohd Kamarulzaki, M. Saifullah
Energy is an extensive view for industrial advancement. Solar thermal energy is designed by light and heat which is radiated by the sun, in the form of electromagnetic radiation. Solar energy is the highest promptly and sufficiently applicable authority of green energy. Impact of nanoparticle shapes on the Hiemenz nanofluid (water-based Cu, Al2O3 and SWCNTs) flow over a porous wedge surface in view of solar radiation energy has been analyzed. The three classical form of nanoparticle shapes are registered into report, i.e. sphere (m=3.0), cylinder (m=6.3698) and laminar (m=16.1576). Nanoparticles in the water-based Cu, Al2O3 and SWCNTs have been advanced as a means to boost solar collector energy through explicit absorption of the entering solar energy. The controlling partial differential equations (PDEs) are remodeled into ordinary differential equations (ODEs) by applying dependable accordance alteration and it is determined numerically by executing Runge Kutta Fehlberg method with shooting technique. It is anticipated that the lamina shape SWCNTs have dynamic heat transfer attainments in the flow improvement over a porous wedge surface as compared with the other nanoparticle shapes in different nanofluid flow regime.
{"title":"Solar Radiation Energy Issues on Nanoparticle Shapes in the Potentiality of Water Based Cu, Al2O3 and SWCNTs","authors":"R. Kandasamy, Nur Atikah bt Adnan, Mohd Kamarulzaki, M. Saifullah","doi":"10.18282/FME.V1I1.602","DOIUrl":"https://doi.org/10.18282/FME.V1I1.602","url":null,"abstract":"Energy is an extensive view for industrial advancement. Solar thermal energy is designed by light and heat which is radiated by the sun, in the form of electromagnetic radiation. Solar energy is the highest promptly and sufficiently applicable authority of green energy. Impact of nanoparticle shapes on the Hiemenz nanofluid (water-based Cu, Al2O3 and SWCNTs) flow over a porous wedge surface in view of solar radiation energy has been analyzed. The three classical form of nanoparticle shapes are registered into report, i.e. sphere (m=3.0), cylinder (m=6.3698) and laminar (m=16.1576). Nanoparticles in the water-based Cu, Al2O3 and SWCNTs have been advanced as a means to boost solar collector energy through explicit absorption of the entering solar energy. The controlling partial differential equations (PDEs) are remodeled into ordinary differential equations (ODEs) by applying dependable accordance alteration and it is determined numerically by executing Runge Kutta Fehlberg method with shooting technique. It is anticipated that the lamina shape SWCNTs have dynamic heat transfer attainments in the flow improvement over a porous wedge surface as compared with the other nanoparticle shapes in different nanofluid flow regime. ","PeriodicalId":230486,"journal":{"name":"Frontiers of Mechatronical Engineering","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130409581","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}
Three of the most important techniques of Peak-to-average power ratio (PAPR) reduction in orthogonal frequency division multiplexing (OFDM) systems are Partial Transmit Sequence PAPR (PTS-PAPR), Selected Mapping PAPR (SLM-PAPR) and Cross-Correlation-PTS. This paper performs a complete analysis on these three techniques providing simulation and discussion of their performance on PAPR reduction and bit error rate (BER). Moreover, the comparison of these methods by using Saleh model amplifier in an OFDM system is provided. The results show that PTS-PAPR outperforms the Cross-Correlation-PTS in terms of PAPR performance while Cross-Correlation-PTS method is more efficient in BER reduction compared to PTS-PAPR and SLM-PAPR.
{"title":"Peak-to-Average Power Ratio Reduction Based on Cross- Correlation in Orthogonal Frequency Division Multiplexing Systems","authors":"M. Kazemian","doi":"10.18282/FME.V1I1.603","DOIUrl":"https://doi.org/10.18282/FME.V1I1.603","url":null,"abstract":"Three of the most important techniques of Peak-to-average power ratio (PAPR) reduction in orthogonal frequency division multiplexing (OFDM) systems are Partial Transmit Sequence PAPR (PTS-PAPR), Selected Mapping PAPR (SLM-PAPR) and Cross-Correlation-PTS. This paper performs a complete analysis on these three techniques providing simulation and discussion of their performance on PAPR reduction and bit error rate (BER). Moreover, the comparison of these methods by using Saleh model amplifier in an OFDM system is provided. The results show that PTS-PAPR outperforms the Cross-Correlation-PTS in terms of PAPR performance while Cross-Correlation-PTS method is more efficient in BER reduction compared to PTS-PAPR and SLM-PAPR.","PeriodicalId":230486,"journal":{"name":"Frontiers of Mechatronical Engineering","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125990651","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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