Pub Date : 2005-03-19DOI: 10.1109/ICNSC.2005.1461165
Zuntong Wang, F. Qiao, Qidi Wu
Control problems in semiconductor manufacturing include lot release and scheduling, while they were investigated separately. A new compound priority control strategy, CPC, is discussed, which takes both the lot release strategy and the scheduling strategy into account. According to the compound priorities of jobs that compete for processing, the CPC strategy can determine which lot(s) is/are processed when the machine is available, and determine when the new lot(s) is/are released into the wafer fab. The CPC strategy can even halt the non-bottleneck machines to prevent overstock of WIP before the bottleneck machines. Simulation results indicate that the CPC strategy has higher performance in reducing the cycle time and its standard deviation, and decreasing the WIP inventory.
{"title":"A new compound priority control strategy in semiconductor wafer fabrication","authors":"Zuntong Wang, F. Qiao, Qidi Wu","doi":"10.1109/ICNSC.2005.1461165","DOIUrl":"https://doi.org/10.1109/ICNSC.2005.1461165","url":null,"abstract":"Control problems in semiconductor manufacturing include lot release and scheduling, while they were investigated separately. A new compound priority control strategy, CPC, is discussed, which takes both the lot release strategy and the scheduling strategy into account. According to the compound priorities of jobs that compete for processing, the CPC strategy can determine which lot(s) is/are processed when the machine is available, and determine when the new lot(s) is/are released into the wafer fab. The CPC strategy can even halt the non-bottleneck machines to prevent overstock of WIP before the bottleneck machines. Simulation results indicate that the CPC strategy has higher performance in reducing the cycle time and its standard deviation, and decreasing the WIP inventory.","PeriodicalId":313251,"journal":{"name":"Proceedings. 2005 IEEE Networking, Sensing and Control, 2005.","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126405764","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 : 2005-03-19DOI: 10.1109/ICNSC.2005.1461163
Du Junping, Quo Wensheng, Tu Xuyan
We put forward and define different kinds of agents that meet the demands of different tourism spot information management systems. Every agent has its own distributed goals, knowledge and reasoning process, and agent implements goals of the whole system via cooperate and assort with each other. Agents can cooperate with each other to fulfill complex work through message definition, thus embodying the superiority of multi-agents working together.
{"title":"A multi-mobile agent based information management system","authors":"Du Junping, Quo Wensheng, Tu Xuyan","doi":"10.1109/ICNSC.2005.1461163","DOIUrl":"https://doi.org/10.1109/ICNSC.2005.1461163","url":null,"abstract":"We put forward and define different kinds of agents that meet the demands of different tourism spot information management systems. Every agent has its own distributed goals, knowledge and reasoning process, and agent implements goals of the whole system via cooperate and assort with each other. Agents can cooperate with each other to fulfill complex work through message definition, thus embodying the superiority of multi-agents working together.","PeriodicalId":313251,"journal":{"name":"Proceedings. 2005 IEEE Networking, Sensing and Control, 2005.","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122291209","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 : 2005-03-19DOI: 10.1109/ICNSC.2005.1461302
Li Xie
The robust H/sub /spl infin// control problem is presented for uncertain discrete-time delayed stochastic systems with saturating nonlinear actuators. In the discrete time systems, the parameter uncertainties are assumed to satisfy norm-bounded conditions, and the time delays exist in state and control simultaneously. By the Lyapunov stability theory, sufficient conditions for the existence of stochastic robust stabilization controller and stochastic robust H/sub /spl infin// controller are presented in terms of linear matrix inequality. With the controllers, the closed-loop systems are robust stochastic stable with a pre-specified H/sub /spl infin// disturbance attenuation coefficient /spl gamma/.
{"title":"Robust H/sub /spl infin// control for uncertain discrete-time delayed stochastic systems with saturating nonlinear actuators","authors":"Li Xie","doi":"10.1109/ICNSC.2005.1461302","DOIUrl":"https://doi.org/10.1109/ICNSC.2005.1461302","url":null,"abstract":"The robust H/sub /spl infin// control problem is presented for uncertain discrete-time delayed stochastic systems with saturating nonlinear actuators. In the discrete time systems, the parameter uncertainties are assumed to satisfy norm-bounded conditions, and the time delays exist in state and control simultaneously. By the Lyapunov stability theory, sufficient conditions for the existence of stochastic robust stabilization controller and stochastic robust H/sub /spl infin// controller are presented in terms of linear matrix inequality. With the controllers, the closed-loop systems are robust stochastic stable with a pre-specified H/sub /spl infin// disturbance attenuation coefficient /spl gamma/.","PeriodicalId":313251,"journal":{"name":"Proceedings. 2005 IEEE Networking, Sensing and Control, 2005.","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126037637","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 : 2005-03-19DOI: 10.1109/ICNSC.2005.1461264
D. Pack, G. York, G. Toussaint
In this paper, we consider the problem of locating a mobile radio frequency (RF) target using multiple unmanned aerial vehicles (UAVs) equipped with sensors with varying accuracies. We investigate the localization task performance as we vary (1) the configuration of multiple UAVs (sensor locations), (2) the type of sensors onboard the UAVs, and (3) the sensor sequence. We use the well known optimal recursive estimation techniques (Kalman filtering) to combine captured sensor values from multiple UAVs and to investigate sensor scheduling issues to minimize the target location error. We present our findings in the form of simulation results.
{"title":"Localizing mobile RF targets using multiple unmanned aerial vehicles with heterogeneous sensing capabilities","authors":"D. Pack, G. York, G. Toussaint","doi":"10.1109/ICNSC.2005.1461264","DOIUrl":"https://doi.org/10.1109/ICNSC.2005.1461264","url":null,"abstract":"In this paper, we consider the problem of locating a mobile radio frequency (RF) target using multiple unmanned aerial vehicles (UAVs) equipped with sensors with varying accuracies. We investigate the localization task performance as we vary (1) the configuration of multiple UAVs (sensor locations), (2) the type of sensors onboard the UAVs, and (3) the sensor sequence. We use the well known optimal recursive estimation techniques (Kalman filtering) to combine captured sensor values from multiple UAVs and to investigate sensor scheduling issues to minimize the target location error. We present our findings in the form of simulation results.","PeriodicalId":313251,"journal":{"name":"Proceedings. 2005 IEEE Networking, Sensing and Control, 2005.","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116702636","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 : 2005-03-19DOI: 10.1109/ICNSC.2005.1461326
Mo Yi, Zhongxuan Liu, Silong Peng
Subpixel methods for edge location are of significant importance in computer vision and other applications. Such methods often use local surface models or polynomial approximation for a local neighborhood to obtain the subpixel edge location. Whereas their performance are good in smooth area, they are typically poor to deal with singularities presented in discrete data and bring discontinuous edge location. In this paper, we propose an improved level set reconstruction(ILSR) technique to overcome these limitations by locating curves while: 1) obtaining continuous and smooth curve, and 2) keeping edge, especially corner location precision. This is accomplished by ILSR scheme in which curves are smoothed along isophotes with anchor and topology constraints at corners which are guided by corner judgement This method results in subpixel location with accurate edge position.
{"title":"Subpixel edge location using improved LSR","authors":"Mo Yi, Zhongxuan Liu, Silong Peng","doi":"10.1109/ICNSC.2005.1461326","DOIUrl":"https://doi.org/10.1109/ICNSC.2005.1461326","url":null,"abstract":"Subpixel methods for edge location are of significant importance in computer vision and other applications. Such methods often use local surface models or polynomial approximation for a local neighborhood to obtain the subpixel edge location. Whereas their performance are good in smooth area, they are typically poor to deal with singularities presented in discrete data and bring discontinuous edge location. In this paper, we propose an improved level set reconstruction(ILSR) technique to overcome these limitations by locating curves while: 1) obtaining continuous and smooth curve, and 2) keeping edge, especially corner location precision. This is accomplished by ILSR scheme in which curves are smoothed along isophotes with anchor and topology constraints at corners which are guided by corner judgement This method results in subpixel location with accurate edge position.","PeriodicalId":313251,"journal":{"name":"Proceedings. 2005 IEEE Networking, Sensing and Control, 2005.","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121674213","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 : 2005-03-19DOI: 10.1109/ICNSC.2005.1461280
D. Prieto, B. Bona
This paper presents simultaneous solution of the orbit and attitude control for a low earth orbiter of the European Space Agency that will develop a high accurate measurement of the Earth's gravity field (less than 10 /spl mu//s/sup 2/) and the geoid modelling (accuracy of 1 - 2 cm) at a spatial resolution better than 100 km. In order to satisfy the stringent performance requirements of the mission (drag compensation down /spl mu/N and attitude tracking with /spl mu/rad accuracy) with reasonable control robustness, a H/sub /spl infin// technique based on a linear matrix inequalities optimization procedure is implemented. The approach followed during the orbit and attitude modelling which leads to the decoupling of the plant's dynamic into four systems that include a description of the satellite's linear and rotational behavior, the mission sensors and actuators with their respective noise model. A detailed frequency characterization of the main exogenous disturbances (drag forces and torques) is developed through a comparative study employing parametric, non-parametric and subspace methods. Simulation results using atmospheric drag profiles validated for this mission by Alenia Spazio (main mission contractor) are presented and analyzed in order to confirm the fulfillment of the constraints and the performance requirements.
{"title":"Orbit and attitude control for the European satellite GOCE","authors":"D. Prieto, B. Bona","doi":"10.1109/ICNSC.2005.1461280","DOIUrl":"https://doi.org/10.1109/ICNSC.2005.1461280","url":null,"abstract":"This paper presents simultaneous solution of the orbit and attitude control for a low earth orbiter of the European Space Agency that will develop a high accurate measurement of the Earth's gravity field (less than 10 /spl mu//s/sup 2/) and the geoid modelling (accuracy of 1 - 2 cm) at a spatial resolution better than 100 km. In order to satisfy the stringent performance requirements of the mission (drag compensation down /spl mu/N and attitude tracking with /spl mu/rad accuracy) with reasonable control robustness, a H/sub /spl infin// technique based on a linear matrix inequalities optimization procedure is implemented. The approach followed during the orbit and attitude modelling which leads to the decoupling of the plant's dynamic into four systems that include a description of the satellite's linear and rotational behavior, the mission sensors and actuators with their respective noise model. A detailed frequency characterization of the main exogenous disturbances (drag forces and torques) is developed through a comparative study employing parametric, non-parametric and subspace methods. Simulation results using atmospheric drag profiles validated for this mission by Alenia Spazio (main mission contractor) are presented and analyzed in order to confirm the fulfillment of the constraints and the performance requirements.","PeriodicalId":313251,"journal":{"name":"Proceedings. 2005 IEEE Networking, Sensing and Control, 2005.","volume":"393 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122719139","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 : 2005-03-19DOI: 10.1109/ICNSC.2005.1461330
Mo Yi, Zhongxuan Liu, Silong Peng
A novel and efficient anisotropic diffusion filters method for texton construction is presented in this paper. Recently, texton based texture analysis has been an intensely researched topic especially using Gabor filters output as features for texton construction. The redundancy of Gabor filters makes texton based methods highly time costing. Considering the time cost reducing problem, anisotropic diffusion (AD) filters are introduced in feature extraction for texton construction. Because anisotropic diffusion makes lots of similar features effectively merge together, this method largely reduces feature vectors and time cost on the basis of reliable texton construction. Because of the nonlinearity of nonlinear diffusion, the widely used histogram comparison technique - Earth move distance (EMD) - is not effective for this framework, an appropriate method is proposed instead. Experiments demonstrate the better quality of our method.
{"title":"Texton construction using anisotropic diffusion filters","authors":"Mo Yi, Zhongxuan Liu, Silong Peng","doi":"10.1109/ICNSC.2005.1461330","DOIUrl":"https://doi.org/10.1109/ICNSC.2005.1461330","url":null,"abstract":"A novel and efficient anisotropic diffusion filters method for texton construction is presented in this paper. Recently, texton based texture analysis has been an intensely researched topic especially using Gabor filters output as features for texton construction. The redundancy of Gabor filters makes texton based methods highly time costing. Considering the time cost reducing problem, anisotropic diffusion (AD) filters are introduced in feature extraction for texton construction. Because anisotropic diffusion makes lots of similar features effectively merge together, this method largely reduces feature vectors and time cost on the basis of reliable texton construction. Because of the nonlinearity of nonlinear diffusion, the widely used histogram comparison technique - Earth move distance (EMD) - is not effective for this framework, an appropriate method is proposed instead. Experiments demonstrate the better quality of our method.","PeriodicalId":313251,"journal":{"name":"Proceedings. 2005 IEEE Networking, Sensing and Control, 2005.","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121877327","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 : 2005-03-19DOI: 10.1109/ICNSC.2005.1461237
M. Maskery, V. Krishnamurthy, C. O'Regan
We construct a model for a distributed network of agents charged with defending a flotilla of ships and investigate how they can achieve their objective in a distributed manner. The dynamics of the model and the objectives are studied in detail, and a decentralized missile deflection algorithm based on solving a stochastic shortest path game is given. The main result is a complete formulation of the missile deflection problem as a stochastic shortest path game, and a distributed algorithm for computing the Nash equilibrium when the game is purely collaborative.
{"title":"Game-theoretic missile deflection in network centric warfare","authors":"M. Maskery, V. Krishnamurthy, C. O'Regan","doi":"10.1109/ICNSC.2005.1461237","DOIUrl":"https://doi.org/10.1109/ICNSC.2005.1461237","url":null,"abstract":"We construct a model for a distributed network of agents charged with defending a flotilla of ships and investigate how they can achieve their objective in a distributed manner. The dynamics of the model and the objectives are studied in detail, and a decentralized missile deflection algorithm based on solving a stochastic shortest path game is given. The main result is a complete formulation of the missile deflection problem as a stochastic shortest path game, and a distributed algorithm for computing the Nash equilibrium when the game is purely collaborative.","PeriodicalId":313251,"journal":{"name":"Proceedings. 2005 IEEE Networking, Sensing and Control, 2005.","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133296962","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 : 2005-03-19DOI: 10.1109/ICNSC.2005.1461239
Mingfan Li, Jinfang Zhou, Z. Xiang, Fuzai Lv
A giant magnetostrictive magnetic fields sensor based on dual fiber Bragg gratings is demonstrated. The sensor head consists of two fiber Bragg gratings of identical Bragg reflection wavelengths bonded on one giant magnetostrictive rod of Terfenol-D with one grating fixed on both ends and the other grating extensible freely. As the giant magnetostrictive rod lengthens according to an external magnetic field, only the fixed grating is stretched accordingly and the Bragg wavelength shifted to a larger value, while no strain is imposed on the other grating, which resulting in two reflectivity peaks in the dual gratings' reflected spectra. With the help of an optical spectrum analyzer, the difference between the Bragg wavelengths of the two gratings which relates to the applied external magnetic filed is readily measured. Temperature compensation is accommodated partly by the use of the dual fiber Bragg gratings configuration. Experimental results are presented and the properties such as measuring range, linearity, and sensitivity of the sensor design are discussed.
{"title":"Giant magnetostrictive magnetic fields sensor based on dual fiber Bragg gratings","authors":"Mingfan Li, Jinfang Zhou, Z. Xiang, Fuzai Lv","doi":"10.1109/ICNSC.2005.1461239","DOIUrl":"https://doi.org/10.1109/ICNSC.2005.1461239","url":null,"abstract":"A giant magnetostrictive magnetic fields sensor based on dual fiber Bragg gratings is demonstrated. The sensor head consists of two fiber Bragg gratings of identical Bragg reflection wavelengths bonded on one giant magnetostrictive rod of Terfenol-D with one grating fixed on both ends and the other grating extensible freely. As the giant magnetostrictive rod lengthens according to an external magnetic field, only the fixed grating is stretched accordingly and the Bragg wavelength shifted to a larger value, while no strain is imposed on the other grating, which resulting in two reflectivity peaks in the dual gratings' reflected spectra. With the help of an optical spectrum analyzer, the difference between the Bragg wavelengths of the two gratings which relates to the applied external magnetic filed is readily measured. Temperature compensation is accommodated partly by the use of the dual fiber Bragg gratings configuration. Experimental results are presented and the properties such as measuring range, linearity, and sensitivity of the sensor design are discussed.","PeriodicalId":313251,"journal":{"name":"Proceedings. 2005 IEEE Networking, Sensing and Control, 2005.","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131989808","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 : 2005-03-19DOI: 10.1109/ICNSC.2005.1461297
Weidong Wang, J. Jia, Zhiwu Li
Based on the working principle of piezoelectricity, an electromechanical-coupled mechanics model is established for the circle-flake microactuator. By using the elastic thin plate bending theory with small deflection, some differential equations for elastic curved surface in circular piezoelectric composite laminates are derived and a kind of analysis and design method is presented that piezoelectric patch's radial strain induced by inverse piezoelectric effect is equivalently substituted with transverse stress on piezoelectric composite laminates. It is pointed out that the equivalent transverse load depends on the edge electric field distribution of parallel plate capacitor. The expression of the neutral plane in the piezoelectric composite laminates is derived. Based on the obtained numerical solution of transcendental equation for electric field, a finite element structural model for microactuator is developed. Finally a static analysis on the model of micropump is simulated and satisfactory results are obtained.
{"title":"Research on a micropump structure with piezoelectric actuator","authors":"Weidong Wang, J. Jia, Zhiwu Li","doi":"10.1109/ICNSC.2005.1461297","DOIUrl":"https://doi.org/10.1109/ICNSC.2005.1461297","url":null,"abstract":"Based on the working principle of piezoelectricity, an electromechanical-coupled mechanics model is established for the circle-flake microactuator. By using the elastic thin plate bending theory with small deflection, some differential equations for elastic curved surface in circular piezoelectric composite laminates are derived and a kind of analysis and design method is presented that piezoelectric patch's radial strain induced by inverse piezoelectric effect is equivalently substituted with transverse stress on piezoelectric composite laminates. It is pointed out that the equivalent transverse load depends on the edge electric field distribution of parallel plate capacitor. The expression of the neutral plane in the piezoelectric composite laminates is derived. Based on the obtained numerical solution of transcendental equation for electric field, a finite element structural model for microactuator is developed. Finally a static analysis on the model of micropump is simulated and satisfactory results are obtained.","PeriodicalId":313251,"journal":{"name":"Proceedings. 2005 IEEE Networking, Sensing and Control, 2005.","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2005-03-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133016269","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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