Pub Date : 2007-05-23DOI: 10.1109/ICIEA.2007.4318915
T. Uppgard
A concept to improve post-rolling flatness and offer flat products to the end customer would decrease substantially run-around scrap. This would mean lower energy consumption and lower environmental load per rolled strip. Part of the concept is advanced prediction tools. This paper reports current work in post-rolling flatness prediction of cold-rolled metal strip. The work was tested in an aluminium mill in Sweden where 8-series aluminium is produced. On-line measurements are made in a cold rolling mill and post-rolling measurements in a tension levelling line, using the same measurement technique in both processing lines. This allows measurements to be easily compared. There are too many thermal and mechanical parameters to make a reliable analytical model of the post-rolling flatness. Instead, two statistical methods to predict the post-rolling flatness are evaluated: multiple linear regression and artificial neural networks. Results show that both techniques are suitable for the purpose, but multiple linear regression is preferable.
{"title":"Predicting Post-rolling Flatness by Statistical Analysis","authors":"T. Uppgard","doi":"10.1109/ICIEA.2007.4318915","DOIUrl":"https://doi.org/10.1109/ICIEA.2007.4318915","url":null,"abstract":"A concept to improve post-rolling flatness and offer flat products to the end customer would decrease substantially run-around scrap. This would mean lower energy consumption and lower environmental load per rolled strip. Part of the concept is advanced prediction tools. This paper reports current work in post-rolling flatness prediction of cold-rolled metal strip. The work was tested in an aluminium mill in Sweden where 8-series aluminium is produced. On-line measurements are made in a cold rolling mill and post-rolling measurements in a tension levelling line, using the same measurement technique in both processing lines. This allows measurements to be easily compared. There are too many thermal and mechanical parameters to make a reliable analytical model of the post-rolling flatness. Instead, two statistical methods to predict the post-rolling flatness are evaluated: multiple linear regression and artificial neural networks. Results show that both techniques are suitable for the purpose, but multiple linear regression is preferable.","PeriodicalId":231682,"journal":{"name":"2007 2nd IEEE Conference on Industrial Electronics and Applications","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133800867","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 : 2007-05-23DOI: 10.1109/ICIEA.2007.4318727
R. S. Youail, A. Khadhim, V. Samawi
Steganography deals with hiding of messages such that potential monitors do not even know that a message is being sent. All files sent through Internet may be affected, either by compression due to the compression nodes or by transmission errors during the transmission or by noise. The proposed system provides certain level of immunity against moderate compression ratios and operates successfully under relatively high noise levels. The benefits of spread spectrum technique together with the advantage of error-correction coding are combined with DFT in order to increase the robustness of the system. Although, the robustness of our system is increased, the capacity of the stego-image is affected. The performance measure used for the perceptibility of the hidden message is based on peak SNR for the stego-image.
{"title":"Improved Stegosystem Using DFT with Combined Error Correction and Spread Spectrum","authors":"R. S. Youail, A. Khadhim, V. Samawi","doi":"10.1109/ICIEA.2007.4318727","DOIUrl":"https://doi.org/10.1109/ICIEA.2007.4318727","url":null,"abstract":"Steganography deals with hiding of messages such that potential monitors do not even know that a message is being sent. All files sent through Internet may be affected, either by compression due to the compression nodes or by transmission errors during the transmission or by noise. The proposed system provides certain level of immunity against moderate compression ratios and operates successfully under relatively high noise levels. The benefits of spread spectrum technique together with the advantage of error-correction coding are combined with DFT in order to increase the robustness of the system. Although, the robustness of our system is increased, the capacity of the stego-image is affected. The performance measure used for the perceptibility of the hidden message is based on peak SNR for the stego-image.","PeriodicalId":231682,"journal":{"name":"2007 2nd IEEE Conference on Industrial Electronics and Applications","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133813337","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 : 2007-05-23DOI: 10.1109/ICIEA.2007.4318945
Xiaohong Cong, Hui Ning, Zhibin Miao
Wheel speed and turn angle are the main parameters in the self navigation for a robot. Since the parameters of self navigation significantly influence robot walking time and robot walking quality, techniques of determining optimal route parameters are in high demand in robot industry. Usually the turn angle is determined and fixed according to certain environment before robot walking; and the wheel speed is determined subjectively by either by robot operators or programmers. As a result, the wheel speed and turn angle is not optimal in terms of the real condition at every corn location, and it is fixed at a conservative value causing longer robot walking time. In this work, a generic and intelligent approach of robot path determination is proposed. First a simplified robot navigation model is introduced. Second a fuzzy rule-based system is established to control robot wheel speed based on the distance from the obstacles, and the turn angle. Then the geometric features of the environment are identified, the wheel speed is determinate and the optimal route is found. Finally this approach is applied on an example for robot navigation, and the results are simulated with computer system to demonstrate the advantages of this approach.
{"title":"A Fuzzy Logical Application in a Robot Self Navigation","authors":"Xiaohong Cong, Hui Ning, Zhibin Miao","doi":"10.1109/ICIEA.2007.4318945","DOIUrl":"https://doi.org/10.1109/ICIEA.2007.4318945","url":null,"abstract":"Wheel speed and turn angle are the main parameters in the self navigation for a robot. Since the parameters of self navigation significantly influence robot walking time and robot walking quality, techniques of determining optimal route parameters are in high demand in robot industry. Usually the turn angle is determined and fixed according to certain environment before robot walking; and the wheel speed is determined subjectively by either by robot operators or programmers. As a result, the wheel speed and turn angle is not optimal in terms of the real condition at every corn location, and it is fixed at a conservative value causing longer robot walking time. In this work, a generic and intelligent approach of robot path determination is proposed. First a simplified robot navigation model is introduced. Second a fuzzy rule-based system is established to control robot wheel speed based on the distance from the obstacles, and the turn angle. Then the geometric features of the environment are identified, the wheel speed is determinate and the optimal route is found. Finally this approach is applied on an example for robot navigation, and the results are simulated with computer system to demonstrate the advantages of this approach.","PeriodicalId":231682,"journal":{"name":"2007 2nd IEEE Conference on Industrial Electronics and Applications","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133845622","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 : 2007-05-23DOI: 10.1109/ICIEA.2007.4318701
Chenghua Ding, R. Weston
A new approach to modelling roles in manufacturing organisations is described. Many companies seek to manufacture a variety of products with common resources. Hence complex decision making is required when seeking to match suitable human and technical resource systems to processes and workflows. The new approach uses enterprise modelling to explicitly define functional and flexibility competencies that must be possessed by suitable role holders. Also described is how causal loop modelling can be used to reason about dependencies between different role attributes. The approach is targeted at the design and application of simulation models that enable relative performance comparisons (such as work throughout, lead-time and process costs) to be made and to show how performance is affected by different role decompositions and resourcing policies. The approach is illustrated with reference to a case study furniture making company.
{"title":"Role Based Modelling Approach to Designing Multi-product Systems","authors":"Chenghua Ding, R. Weston","doi":"10.1109/ICIEA.2007.4318701","DOIUrl":"https://doi.org/10.1109/ICIEA.2007.4318701","url":null,"abstract":"A new approach to modelling roles in manufacturing organisations is described. Many companies seek to manufacture a variety of products with common resources. Hence complex decision making is required when seeking to match suitable human and technical resource systems to processes and workflows. The new approach uses enterprise modelling to explicitly define functional and flexibility competencies that must be possessed by suitable role holders. Also described is how causal loop modelling can be used to reason about dependencies between different role attributes. The approach is targeted at the design and application of simulation models that enable relative performance comparisons (such as work throughout, lead-time and process costs) to be made and to show how performance is affected by different role decompositions and resourcing policies. The approach is illustrated with reference to a case study furniture making company.","PeriodicalId":231682,"journal":{"name":"2007 2nd IEEE Conference on Industrial Electronics and Applications","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115849891","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 : 2007-05-23DOI: 10.1109/ICIEA.2007.4318371
S. Raabe, G.A.J. Elliott, G. Covic, J. Boys
The development of a new quadrature pickup configuration is described that improves the lateral tolerance of power-pickups relative to the track in inductive power transfer (IPT) systems. This is achieved using coils mounted in quadrature on a standard pick-up to capture both the tangential and vertical flux components from the IPT track. The arrangement of the two pick-up coils ensures that they remain un-coupled with each other allowing independent control and operation. A suitable pickup controller for power regulation is presented and a prototype constructed and tested in the laboratory. Measurements verify the design and show a substantially improved power profile compared with standard pick-up regulators. A method of extending the power profile further using a meander track configuration is also presented.
{"title":"A Quadrature Pickup for Inductive Power Transfer Systems","authors":"S. Raabe, G.A.J. Elliott, G. Covic, J. Boys","doi":"10.1109/ICIEA.2007.4318371","DOIUrl":"https://doi.org/10.1109/ICIEA.2007.4318371","url":null,"abstract":"The development of a new quadrature pickup configuration is described that improves the lateral tolerance of power-pickups relative to the track in inductive power transfer (IPT) systems. This is achieved using coils mounted in quadrature on a standard pick-up to capture both the tangential and vertical flux components from the IPT track. The arrangement of the two pick-up coils ensures that they remain un-coupled with each other allowing independent control and operation. A suitable pickup controller for power regulation is presented and a prototype constructed and tested in the laboratory. Measurements verify the design and show a substantially improved power profile compared with standard pick-up regulators. A method of extending the power profile further using a meander track configuration is also presented.","PeriodicalId":231682,"journal":{"name":"2007 2nd IEEE Conference on Industrial Electronics and Applications","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124165763","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}
Due to the different pole numbers of power winding and control winding, the rotating speeds of magnetic fields generated by the two winding currents of the doubly fed brushless machine (DFBM) are different. Different rotating reference frames are usually needed to analyze the performance of the DFBM. In order to simplify the complicacy of the mathematic model and to implement easily vector control, a new model of DFBM based on the slip frequency rotating equivalent control winding is proposed in this paper. By taking the equivalence that the rotating magnetic field generated by the stationary stator control winding can be produced by an equivalent rotating winding with the slip frequency rotating speed like the rotor winding of a wound rotor induction machine. The new model of DFBM can be used for performance analysis and vector control in the same way as that of the conventional wound rotor induction machine.
{"title":"A Novel Mathematic Model of Doubly Fed Brushless Machine","authors":"Zheng Wang, Fengxiang Wang, Xiuping Wang, Jingfeng Ruan","doi":"10.1109/ICIEA.2007.4318483","DOIUrl":"https://doi.org/10.1109/ICIEA.2007.4318483","url":null,"abstract":"Due to the different pole numbers of power winding and control winding, the rotating speeds of magnetic fields generated by the two winding currents of the doubly fed brushless machine (DFBM) are different. Different rotating reference frames are usually needed to analyze the performance of the DFBM. In order to simplify the complicacy of the mathematic model and to implement easily vector control, a new model of DFBM based on the slip frequency rotating equivalent control winding is proposed in this paper. By taking the equivalence that the rotating magnetic field generated by the stationary stator control winding can be produced by an equivalent rotating winding with the slip frequency rotating speed like the rotor winding of a wound rotor induction machine. The new model of DFBM can be used for performance analysis and vector control in the same way as that of the conventional wound rotor induction machine.","PeriodicalId":231682,"journal":{"name":"2007 2nd IEEE Conference on Industrial Electronics and Applications","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114901986","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 : 2007-05-23DOI: 10.1109/ICIEA.2007.4318783
Yonggao Zhang, Yanli Gao, Qing Xu, Feng Zhou
In order to realize measurement on line for multi-phase flow parameter using electrical capacitance tomography (ECT), it is the key to improve quality and rate of image reconstruction, which also is hot spot for researcher. In this paper, ECT image reconstruction algorithms are reviewed by their principle and recently researches on image reconstruction are introduced. The most commonly used ECT image reconstruction algorithms, LBP, Landweber iteration, MLRR were evaluated using simulations. Future possibilities on ECT image reconstruction algorithms are also discussed.
{"title":"Development and Study of Image Reconstruction Algorithm for Electrical Capacitance Tomography","authors":"Yonggao Zhang, Yanli Gao, Qing Xu, Feng Zhou","doi":"10.1109/ICIEA.2007.4318783","DOIUrl":"https://doi.org/10.1109/ICIEA.2007.4318783","url":null,"abstract":"In order to realize measurement on line for multi-phase flow parameter using electrical capacitance tomography (ECT), it is the key to improve quality and rate of image reconstruction, which also is hot spot for researcher. In this paper, ECT image reconstruction algorithms are reviewed by their principle and recently researches on image reconstruction are introduced. The most commonly used ECT image reconstruction algorithms, LBP, Landweber iteration, MLRR were evaluated using simulations. Future possibilities on ECT image reconstruction algorithms are also discussed.","PeriodicalId":231682,"journal":{"name":"2007 2nd IEEE Conference on Industrial Electronics and Applications","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114944041","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 : 2007-05-23DOI: 10.1109/ICIEA.2007.4318644
Xiangyu Meng, Huijun Gao
This paper presents a new parameter-dependent approach to the design of robust energy-to-peak filters for linear uncertain systems. Given a system containing polytopic parameter uncertainties, our purpose is to design a robust filter such that the filtering error system is asymptotically stable with a guaranteed L2-Linfin disturbance attenuation level gamma. This problem is solved by introducing new energy-to-peak performance characterizations, and by utilizing an idea of structured parameter-dependent matrices. New sufficient conditions are obtained for the existence of desired filters in terms of linear matrix inequalities (LMIs), which can be easily tested by using standard numerical software. If these conditions are satisfied, a desired filter can be readily constructed. Continuous-time systems are considered, and the effectiveness and advantage of the proposed filter design methods are shown via a numerical example.
{"title":"New Design of Robust Energy-to-Peak Filtering for Uncertain Continuous-time Systems","authors":"Xiangyu Meng, Huijun Gao","doi":"10.1109/ICIEA.2007.4318644","DOIUrl":"https://doi.org/10.1109/ICIEA.2007.4318644","url":null,"abstract":"This paper presents a new parameter-dependent approach to the design of robust energy-to-peak filters for linear uncertain systems. Given a system containing polytopic parameter uncertainties, our purpose is to design a robust filter such that the filtering error system is asymptotically stable with a guaranteed L2-Linfin disturbance attenuation level gamma. This problem is solved by introducing new energy-to-peak performance characterizations, and by utilizing an idea of structured parameter-dependent matrices. New sufficient conditions are obtained for the existence of desired filters in terms of linear matrix inequalities (LMIs), which can be easily tested by using standard numerical software. If these conditions are satisfied, a desired filter can be readily constructed. Continuous-time systems are considered, and the effectiveness and advantage of the proposed filter design methods are shown via a numerical example.","PeriodicalId":231682,"journal":{"name":"2007 2nd IEEE Conference on Industrial Electronics and Applications","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116352171","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 : 2007-05-23DOI: 10.1109/ICIEA.2007.4318946
Yun Chen, A. Xue, Renquan Lu, Junhong Wang
In this paper, the problem of robust H∞ guaranteed cost filtering for uncertain systems with time-varying delays is firstly investigated. The systems are with both discrete delays and distributed delays, and the uncertainties are assumed to be norm-bounded. A delay-dependent robust H∞ guaranteed cost filter in terms of linear matrix inequalities (LMIs) is presented by using Lyapunov-Krasovskii theory.
{"title":"Delay-dependent robust H∞ guaranteed cost filtering for uncertain systems with distributed delays","authors":"Yun Chen, A. Xue, Renquan Lu, Junhong Wang","doi":"10.1109/ICIEA.2007.4318946","DOIUrl":"https://doi.org/10.1109/ICIEA.2007.4318946","url":null,"abstract":"In this paper, the problem of robust H∞ guaranteed cost filtering for uncertain systems with time-varying delays is firstly investigated. The systems are with both discrete delays and distributed delays, and the uncertainties are assumed to be norm-bounded. A delay-dependent robust H∞ guaranteed cost filter in terms of linear matrix inequalities (LMIs) is presented by using Lyapunov-Krasovskii theory.","PeriodicalId":231682,"journal":{"name":"2007 2nd IEEE Conference on Industrial Electronics and Applications","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124093220","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 : 2007-05-23DOI: 10.1109/ICIEA.2007.4318615
Changfeng Li, Lining Sun, Dongsheng Qu, Yanwu Liu
One parallel robot had been developed to support the sensor and make it orient precisely in the test of Inertia! Confinement Fusion (ICF). In this paper some methods for improving the accuracy of parallel robot were discussed to guarantee the position accuracy of the sensor in vacuum environment. Firstly, error sources decreasing the accuracy of parallel robot were analyzed and some measures in structure design were adopted to improve the accuracy. Then error model of the robot was set up by the complete differential theory based on the parallel robot inverse kinematics equation. Therefore the position error of the robot could be reduced further by error compensation, which was realized through software. It's proved by the experiments that the error model was of simple and effective, the locating accuracy of parallel robot could be improved through error compensation markedly and the position accuracy reached 1mum, which could satisfy the sensor locating accuracy requirement of ICF research.
{"title":"Error Analysis and Compensation of Precision Parallel Robot for Sensor Locating in ICF","authors":"Changfeng Li, Lining Sun, Dongsheng Qu, Yanwu Liu","doi":"10.1109/ICIEA.2007.4318615","DOIUrl":"https://doi.org/10.1109/ICIEA.2007.4318615","url":null,"abstract":"One parallel robot had been developed to support the sensor and make it orient precisely in the test of Inertia! Confinement Fusion (ICF). In this paper some methods for improving the accuracy of parallel robot were discussed to guarantee the position accuracy of the sensor in vacuum environment. Firstly, error sources decreasing the accuracy of parallel robot were analyzed and some measures in structure design were adopted to improve the accuracy. Then error model of the robot was set up by the complete differential theory based on the parallel robot inverse kinematics equation. Therefore the position error of the robot could be reduced further by error compensation, which was realized through software. It's proved by the experiments that the error model was of simple and effective, the locating accuracy of parallel robot could be improved through error compensation markedly and the position accuracy reached 1mum, which could satisfy the sensor locating accuracy requirement of ICF research.","PeriodicalId":231682,"journal":{"name":"2007 2nd IEEE Conference on Industrial Electronics and Applications","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124650391","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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