Pub Date : 2008-12-01DOI: 10.1109/KAMW.2008.4810588
Guo Peng
The superheated steam temperature system has the characteristics of high inertia, large delay and time-varying parameters. In this paper, adaptive Smith-PID based on residual gray prediction is used to deal with these problems. Adaline neural network is used to identify the object's gain and delay in order to overcome the defectiveness of time-varying parameters. Residual gray prediction module in the feedback loop, which can predict multiple steps of the feedback, can regulate the system previously. This adaptive residual gray predictive control can overcome the influences of model mismatch and enhance the robustness of the system. The simulation of superheated steam temperature system proved that the new method has effective control performance.
{"title":"Residual Gray Predictive Adaptive Smith-PID Control and Its Application","authors":"Guo Peng","doi":"10.1109/KAMW.2008.4810588","DOIUrl":"https://doi.org/10.1109/KAMW.2008.4810588","url":null,"abstract":"The superheated steam temperature system has the characteristics of high inertia, large delay and time-varying parameters. In this paper, adaptive Smith-PID based on residual gray prediction is used to deal with these problems. Adaline neural network is used to identify the object's gain and delay in order to overcome the defectiveness of time-varying parameters. Residual gray prediction module in the feedback loop, which can predict multiple steps of the feedback, can regulate the system previously. This adaptive residual gray predictive control can overcome the influences of model mismatch and enhance the robustness of the system. The simulation of superheated steam temperature system proved that the new method has effective control performance.","PeriodicalId":375613,"journal":{"name":"2008 IEEE International Symposium on Knowledge Acquisition and Modeling Workshop","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129277978","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 : 2008-12-01DOI: 10.1109/KAMW.2008.4810487
Mande Shen, Dejun Li, Zhouqiao Wu
Finding the area of an object from image is an essential problem in many applications of machine vision, but there is usually error in area measurement because of defocus. In this work, influence of defocus on area measurement has been researched experimentally and theoretically. The results of experiment show that the relative error is 31.3% when the object plane deviates 10mm from conjugated plane of image plane. A novel method has been developed to amend this error from defocus, according to the relation between maximal image gradient and defocusing amount. Firstly, the relation between maximal image gradient and defocusing amount is calibrated. Secondly, the maximal gradient of image is calculated. Thirdly, the defocusing amount is deduced. Finally, the area of defocused image is amended according to the defocusing amount. After amendment, the relative error of image area is less than 3.8%, when the defocusing amount is within 10mm.
{"title":"Influence of Defocus on Area Measurements","authors":"Mande Shen, Dejun Li, Zhouqiao Wu","doi":"10.1109/KAMW.2008.4810487","DOIUrl":"https://doi.org/10.1109/KAMW.2008.4810487","url":null,"abstract":"Finding the area of an object from image is an essential problem in many applications of machine vision, but there is usually error in area measurement because of defocus. In this work, influence of defocus on area measurement has been researched experimentally and theoretically. The results of experiment show that the relative error is 31.3% when the object plane deviates 10mm from conjugated plane of image plane. A novel method has been developed to amend this error from defocus, according to the relation between maximal image gradient and defocusing amount. Firstly, the relation between maximal image gradient and defocusing amount is calibrated. Secondly, the maximal gradient of image is calculated. Thirdly, the defocusing amount is deduced. Finally, the area of defocused image is amended according to the defocusing amount. After amendment, the relative error of image area is less than 3.8%, when the defocusing amount is within 10mm.","PeriodicalId":375613,"journal":{"name":"2008 IEEE International Symposium on Knowledge Acquisition and Modeling Workshop","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125333682","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 : 2008-12-01DOI: 10.1109/KAMW.2008.4810545
X. Tan, Jianxin Wang, Zhong Liu, Liping Jiang
We combined the finite rate of innovation (FRI) method with singular value decomposition (SVD) theory and got an improved sampling algorithm of non-band limited signals. It used SVD instead of annihilating filter in FRI method to reduce noise. We took streams of diracs signal as an example and deduced the detailed sampling and reconstruction process in the improved algorithm. It first found DFT coefficients of the samples, and constructed a Hankel data matrix. Then the matrix was decomposed according to SVD technique and the position information of diracs was gotten. Finally it computed weight coefficients from the Vandermonde system. The simulation results indicate that the original signal can also be reconstructed well in the presence of noise if only the sample rate is not less than its innovation rate. The sampling method based on SVD has good antinoise performance. It also saves power consumption and computational complexity. In some communication systems such as UWB and CDMA, a very narrow pulse which is like diracs signal very much is used to carry information. So this FRI algorithm based on SVD can be applied in their receivers.
{"title":"A Sampling Algorithm of Non-band Limited Signals Based on SVD","authors":"X. Tan, Jianxin Wang, Zhong Liu, Liping Jiang","doi":"10.1109/KAMW.2008.4810545","DOIUrl":"https://doi.org/10.1109/KAMW.2008.4810545","url":null,"abstract":"We combined the finite rate of innovation (FRI) method with singular value decomposition (SVD) theory and got an improved sampling algorithm of non-band limited signals. It used SVD instead of annihilating filter in FRI method to reduce noise. We took streams of diracs signal as an example and deduced the detailed sampling and reconstruction process in the improved algorithm. It first found DFT coefficients of the samples, and constructed a Hankel data matrix. Then the matrix was decomposed according to SVD technique and the position information of diracs was gotten. Finally it computed weight coefficients from the Vandermonde system. The simulation results indicate that the original signal can also be reconstructed well in the presence of noise if only the sample rate is not less than its innovation rate. The sampling method based on SVD has good antinoise performance. It also saves power consumption and computational complexity. In some communication systems such as UWB and CDMA, a very narrow pulse which is like diracs signal very much is used to carry information. So this FRI algorithm based on SVD can be applied in their receivers.","PeriodicalId":375613,"journal":{"name":"2008 IEEE International Symposium on Knowledge Acquisition and Modeling Workshop","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126928372","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 : 2008-12-01DOI: 10.1109/KAMW.2008.4810532
Wei Jian-li, Yuan Yun-feng
The design of a robust longitudinal flight controller for the air-breathing hypersonic vehicle is presented in this paper. The non-standard dynamic characteristics of air-breathing hypesonic flight vehicles together with the aerodynamic effects of hypersonic flight make the flight control of such systems highly challenging. Moreover the wide range of speed during operation and the lack of a broad flight dynamics database add significant plant parameter variations and uncertainties to the vehicle modeling and control problem. In this paper, these features was modeled as uncertainties and incorporated into the design procedure of a flight control system by mu-synthesis techniques. And the uncertainty in detailed manner was not modeled, but rather to lump all of these effects together into one full-block uncertainty at the input of a four-state, nominal model of the vehicle. The results illustrated that mu-synthesis is ideal for addressing the problem of multiple uncertainty sources present in air-breathing hypersonic flight control system.
{"title":"Robust Longitudinal Flight Controller Design for the Air-breathing Hypersonic Vehicle","authors":"Wei Jian-li, Yuan Yun-feng","doi":"10.1109/KAMW.2008.4810532","DOIUrl":"https://doi.org/10.1109/KAMW.2008.4810532","url":null,"abstract":"The design of a robust longitudinal flight controller for the air-breathing hypersonic vehicle is presented in this paper. The non-standard dynamic characteristics of air-breathing hypesonic flight vehicles together with the aerodynamic effects of hypersonic flight make the flight control of such systems highly challenging. Moreover the wide range of speed during operation and the lack of a broad flight dynamics database add significant plant parameter variations and uncertainties to the vehicle modeling and control problem. In this paper, these features was modeled as uncertainties and incorporated into the design procedure of a flight control system by mu-synthesis techniques. And the uncertainty in detailed manner was not modeled, but rather to lump all of these effects together into one full-block uncertainty at the input of a four-state, nominal model of the vehicle. The results illustrated that mu-synthesis is ideal for addressing the problem of multiple uncertainty sources present in air-breathing hypersonic flight control system.","PeriodicalId":375613,"journal":{"name":"2008 IEEE International Symposium on Knowledge Acquisition and Modeling Workshop","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123203882","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 : 2008-12-01DOI: 10.1109/KAMW.2008.4810610
Yiping Chen, Chen Deng, Yuhang Yang
It is widely recognized that fourth generation mobile communication systems will be built upon all-IP architectures with various radio access networks. The existence of multiple access networks provides users possibilities to connect to the access network which best suits their application needs at any given time and location. This concept is often called by "always best connected". Access discovery is the process not only to find available access networks or access devices for ABC terminals, but also to get the available resource information for applications. However, current access discovery schemes do not meet the requirements of access discovery in ABC networks. In this study, we propose two access discovery schemes to solve the problem mentioned above. One is terminal-based access discovery. The other is network-based access discovery. Through analysis and simulation, network-based access discovery brings user equipments a great improvement on power consumption comparing with terminal-based access discovery.
{"title":"Access Discovery in Always Best Connected Networks","authors":"Yiping Chen, Chen Deng, Yuhang Yang","doi":"10.1109/KAMW.2008.4810610","DOIUrl":"https://doi.org/10.1109/KAMW.2008.4810610","url":null,"abstract":"It is widely recognized that fourth generation mobile communication systems will be built upon all-IP architectures with various radio access networks. The existence of multiple access networks provides users possibilities to connect to the access network which best suits their application needs at any given time and location. This concept is often called by \"always best connected\". Access discovery is the process not only to find available access networks or access devices for ABC terminals, but also to get the available resource information for applications. However, current access discovery schemes do not meet the requirements of access discovery in ABC networks. In this study, we propose two access discovery schemes to solve the problem mentioned above. One is terminal-based access discovery. The other is network-based access discovery. Through analysis and simulation, network-based access discovery brings user equipments a great improvement on power consumption comparing with terminal-based access discovery.","PeriodicalId":375613,"journal":{"name":"2008 IEEE International Symposium on Knowledge Acquisition and Modeling Workshop","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123118099","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 : 2008-12-01DOI: 10.1109/KAMW.2008.4810704
Yongbo Lai, Y. Hui
This paper deals with a problem on non-fragile guaranteed cost and Hinfin robust control for discrete uncertain system with state and input time-delay. Based on the linear matrices inequalities (LMIs) and Schur complements, First, we presented and proved a sufficient condition by a proper Lyapunov function such that the closed-loop system is robust stable, and satisfies Hinfin norm bound and a given cost function has upper bound;Next, we designed a non-fragile guaranteed cost and Hinfin robust controller such that the closed-loop system is regular impulse free and asymptotically stable, moreover, satisfies Hinfin performance. The design method is given in terms of solving LMIs. Finally, a simple example is provided to demonstrate the effectiveness of the proposed approach.
{"title":"Non-fragile Guaranteed-cost Robust H∞ control for Discrete Uncertain Time-delay System","authors":"Yongbo Lai, Y. Hui","doi":"10.1109/KAMW.2008.4810704","DOIUrl":"https://doi.org/10.1109/KAMW.2008.4810704","url":null,"abstract":"This paper deals with a problem on non-fragile guaranteed cost and Hinfin robust control for discrete uncertain system with state and input time-delay. Based on the linear matrices inequalities (LMIs) and Schur complements, First, we presented and proved a sufficient condition by a proper Lyapunov function such that the closed-loop system is robust stable, and satisfies Hinfin norm bound and a given cost function has upper bound;Next, we designed a non-fragile guaranteed cost and Hinfin robust controller such that the closed-loop system is regular impulse free and asymptotically stable, moreover, satisfies Hinfin performance. The design method is given in terms of solving LMIs. Finally, a simple example is provided to demonstrate the effectiveness of the proposed approach.","PeriodicalId":375613,"journal":{"name":"2008 IEEE International Symposium on Knowledge Acquisition and Modeling Workshop","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124896883","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 : 2008-12-01DOI: 10.1109/KAMW.2008.4810607
Wei Huang, Chuanbo Chen, M. Sarem
Although the quadtree has many merits in image representation and image processing, its compactness is impaired by the excessive emphasis on the symmetry of segmentations. In this paper, a lossless gray level image representation, titled overlapped rectangle image representation (ORIR), is presented. The ORIR has removed the constraint of the symmetric segmentations and is capable of coding some detached pixels by using a single rectangle. These characteristics have made the ORIR a highly compact representation. The theoretical analyses and the experimental results in this paper show that the ORIR is greatly superior to the linear quadtree in the aspect of the memory efficiency.
{"title":"A New Lossless Gray Level Image Representation","authors":"Wei Huang, Chuanbo Chen, M. Sarem","doi":"10.1109/KAMW.2008.4810607","DOIUrl":"https://doi.org/10.1109/KAMW.2008.4810607","url":null,"abstract":"Although the quadtree has many merits in image representation and image processing, its compactness is impaired by the excessive emphasis on the symmetry of segmentations. In this paper, a lossless gray level image representation, titled overlapped rectangle image representation (ORIR), is presented. The ORIR has removed the constraint of the symmetric segmentations and is capable of coding some detached pixels by using a single rectangle. These characteristics have made the ORIR a highly compact representation. The theoretical analyses and the experimental results in this paper show that the ORIR is greatly superior to the linear quadtree in the aspect of the memory efficiency.","PeriodicalId":375613,"journal":{"name":"2008 IEEE International Symposium on Knowledge Acquisition and Modeling Workshop","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122607154","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 : 2008-12-01DOI: 10.1109/KAMW.2008.4810656
Zhiping Fan, T. Hong, Zhizhuang Liu
Selection of suppliers is the precondition and foundation of supply chain operation. It is an important aspect to choose the best supplier for supply chain management. This paper is aimed to present a fuzzy decision-making approach to deal with the supplier selection problem in supply chain system. During recent years, how to determine suitable suppliers in the supply chain has become a key strategic consideration. However, the nature of these decisions usually is complex and unstructured. Especially, some decision-making data is undefined, vague and fuzzy data. The proposed methodology consists of two parts: (1) The RST is a fairly new methodology developed for dealing with imprecise, uncertain, and vague information. We assure the weight in the selection of a supplier based on rough set theory (RST) model. (2) According to index systems we have established for selection of suppliers, we use fuzzy TOPSIS algorithm to select the best suppliers.
{"title":"Selection of Suppliers Based on Rough Set Theory and Fuzzy TOPSIS Algorithm","authors":"Zhiping Fan, T. Hong, Zhizhuang Liu","doi":"10.1109/KAMW.2008.4810656","DOIUrl":"https://doi.org/10.1109/KAMW.2008.4810656","url":null,"abstract":"Selection of suppliers is the precondition and foundation of supply chain operation. It is an important aspect to choose the best supplier for supply chain management. This paper is aimed to present a fuzzy decision-making approach to deal with the supplier selection problem in supply chain system. During recent years, how to determine suitable suppliers in the supply chain has become a key strategic consideration. However, the nature of these decisions usually is complex and unstructured. Especially, some decision-making data is undefined, vague and fuzzy data. The proposed methodology consists of two parts: (1) The RST is a fairly new methodology developed for dealing with imprecise, uncertain, and vague information. We assure the weight in the selection of a supplier based on rough set theory (RST) model. (2) According to index systems we have established for selection of suppliers, we use fuzzy TOPSIS algorithm to select the best suppliers.","PeriodicalId":375613,"journal":{"name":"2008 IEEE International Symposium on Knowledge Acquisition and Modeling Workshop","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131685924","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 : 2008-12-01DOI: 10.1109/KAMW.2008.4810566
Shujing Hu, Jinyuan Sehn, Runjie Liu, Wenying Zhang, Weixin Mu
Maximum size matching (MSM) cell scheduling in the ATM switching fabrics (ASF) with virtual output queuing (VOQ) is complied by a new Hopfield neural network (HNN). A new energy function of HNN is proposed to correspond to the cell scheduling rules of MSM. The new HNN scheduling algorithm employs all cells updated synchronously and realizes the MSM of the cells with global optimal between input queues and output queues in a single time slot. This difference from the iSLIP and FIRM algorithms makes it have better performances. The simulation results of 8*8 and 16*16' ASF, compared with iSLIP and FIRM methods, demonstrate that the proposed algorithm has faster convergence speed and reduces the mean delay greatly without the throughput degradation.
{"title":"Maximum Size Matching Method Realized by Hopfield Neural Network for ATM cell scheduling","authors":"Shujing Hu, Jinyuan Sehn, Runjie Liu, Wenying Zhang, Weixin Mu","doi":"10.1109/KAMW.2008.4810566","DOIUrl":"https://doi.org/10.1109/KAMW.2008.4810566","url":null,"abstract":"Maximum size matching (MSM) cell scheduling in the ATM switching fabrics (ASF) with virtual output queuing (VOQ) is complied by a new Hopfield neural network (HNN). A new energy function of HNN is proposed to correspond to the cell scheduling rules of MSM. The new HNN scheduling algorithm employs all cells updated synchronously and realizes the MSM of the cells with global optimal between input queues and output queues in a single time slot. This difference from the iSLIP and FIRM algorithms makes it have better performances. The simulation results of 8*8 and 16*16' ASF, compared with iSLIP and FIRM methods, demonstrate that the proposed algorithm has faster convergence speed and reduces the mean delay greatly without the throughput degradation.","PeriodicalId":375613,"journal":{"name":"2008 IEEE International Symposium on Knowledge Acquisition and Modeling Workshop","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134416414","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 : 2008-12-01DOI: 10.1109/KAMW.2008.4810697
Zhou Xian-jiang, Gao Zhi, Z. Qiao-ling
The ultimate goal of competitive basketball is winning, and this sport develops to achieve this goal. Winning the game is the start point, and end point as well, thus winning the opponent in the game become the immediate pursuit and effort direction.
{"title":"Analysis Approach of Winning Factors in Competitive Basketball","authors":"Zhou Xian-jiang, Gao Zhi, Z. Qiao-ling","doi":"10.1109/KAMW.2008.4810697","DOIUrl":"https://doi.org/10.1109/KAMW.2008.4810697","url":null,"abstract":"The ultimate goal of competitive basketball is winning, and this sport develops to achieve this goal. Winning the game is the start point, and end point as well, thus winning the opponent in the game become the immediate pursuit and effort direction.","PeriodicalId":375613,"journal":{"name":"2008 IEEE International Symposium on Knowledge Acquisition and Modeling Workshop","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134439733","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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