Pub Date : 2006-05-08DOI: 10.1109/ISSCAA.2006.1627450
Yanbing Ju, Aihua Wang, F. Zhu, Chuanliang Xia
Based on the characteristics of the logistics distribution system, this paper proposes a multi-agent framework for the logistics distribution system. One simulation model for the logistics distribution system is set up based on the functions of different agents. The model which integrates several sub-models is set up using Witness 2003 issued by Lanner Corporation. Running the simulation model, we can observe dynamically the process of the system, find the bottlenecks which affect the system. We can analyze the probability distribution about the delay time of certain entity, calculate the average waiting time and the average waiting number in queue for entity, and judge the state of some agents. The results of the simulation model provide the basis for the managers to make right decisions under uncertainty
{"title":"Research on the logistics distribution system based on Witness","authors":"Yanbing Ju, Aihua Wang, F. Zhu, Chuanliang Xia","doi":"10.1109/ISSCAA.2006.1627450","DOIUrl":"https://doi.org/10.1109/ISSCAA.2006.1627450","url":null,"abstract":"Based on the characteristics of the logistics distribution system, this paper proposes a multi-agent framework for the logistics distribution system. One simulation model for the logistics distribution system is set up based on the functions of different agents. The model which integrates several sub-models is set up using Witness 2003 issued by Lanner Corporation. Running the simulation model, we can observe dynamically the process of the system, find the bottlenecks which affect the system. We can analyze the probability distribution about the delay time of certain entity, calculate the average waiting time and the average waiting number in queue for entity, and judge the state of some agents. The results of the simulation model provide the basis for the managers to make right decisions under uncertainty","PeriodicalId":275436,"journal":{"name":"2006 1st International Symposium on Systems and Control in Aerospace and Astronautics","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117067793","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 : 2006-05-08DOI: 10.1109/ISSCAA.2006.1627625
T. Sun, Peng Gao, Hongpeng Liu
There are many nonlinear phenomena in DC-DC converter because of switching working. These nonlinear characteristics lead to chaos. To optimize parameters and avoid chaos occurring while DC-DC converter working, the analysis of chaos is necessary. But it always focused on simple topology before, because it's difficult to establish a nonlinear mathematic model on complicated DC-DC converter. This paper puts forward a new modeling method with PWM equivalent switching model by analyzing operating characteristic of ZVZCS FB PWM DC-DC converter. This model can be established without solving high order nonlinear equation system. So it makes the modeling course greatly simple, and makes the analysis about chaos in complicated DC-DC converter easily
{"title":"Equivalent switching modeling of ZVZCS FB PWM converter","authors":"T. Sun, Peng Gao, Hongpeng Liu","doi":"10.1109/ISSCAA.2006.1627625","DOIUrl":"https://doi.org/10.1109/ISSCAA.2006.1627625","url":null,"abstract":"There are many nonlinear phenomena in DC-DC converter because of switching working. These nonlinear characteristics lead to chaos. To optimize parameters and avoid chaos occurring while DC-DC converter working, the analysis of chaos is necessary. But it always focused on simple topology before, because it's difficult to establish a nonlinear mathematic model on complicated DC-DC converter. This paper puts forward a new modeling method with PWM equivalent switching model by analyzing operating characteristic of ZVZCS FB PWM DC-DC converter. This model can be established without solving high order nonlinear equation system. So it makes the modeling course greatly simple, and makes the analysis about chaos in complicated DC-DC converter easily","PeriodicalId":275436,"journal":{"name":"2006 1st International Symposium on Systems and Control in Aerospace and Astronautics","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116284525","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 : 2006-05-08DOI: 10.1109/ISSCAA.2006.1627669
Chenglin Wen, C. Wen
Combining the multiscale capability from wavelet with the performance of real-time and recursion about Kalman filter, a multiscale sequential filter is proposed to process dynamic systems with multisensor. This filter can not only absolutely achieve the effect obtained via conventional multisensor fusion approach, but also it has the advantages as wavelet and Kalman filter. Its multiscale characteristic can be used to analyze stochastic signal in different frequency subspace. Some similar methods existed do not possess these capabilities, such as real time and recursion. Computer simulation also shows that all estimate results from the new algorithm is comparable with that from traditional date fusion algorithms. Finally, the computable advantage is likewise validated by comparing the computer burden between the new algorithm and other two existed fusion algorithms
{"title":"The multiscale sequential filter with multisensor data fusion","authors":"Chenglin Wen, C. Wen","doi":"10.1109/ISSCAA.2006.1627669","DOIUrl":"https://doi.org/10.1109/ISSCAA.2006.1627669","url":null,"abstract":"Combining the multiscale capability from wavelet with the performance of real-time and recursion about Kalman filter, a multiscale sequential filter is proposed to process dynamic systems with multisensor. This filter can not only absolutely achieve the effect obtained via conventional multisensor fusion approach, but also it has the advantages as wavelet and Kalman filter. Its multiscale characteristic can be used to analyze stochastic signal in different frequency subspace. Some similar methods existed do not possess these capabilities, such as real time and recursion. Computer simulation also shows that all estimate results from the new algorithm is comparable with that from traditional date fusion algorithms. Finally, the computable advantage is likewise validated by comparing the computer burden between the new algorithm and other two existed fusion algorithms","PeriodicalId":275436,"journal":{"name":"2006 1st International Symposium on Systems and Control in Aerospace and Astronautics","volume":"294 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116397880","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 : 2006-05-08DOI: 10.1109/ISSCAA.2006.1627616
Dan Fu, Zhiqiang Qiu, Qifeng Yu
A new approach to recover 3D structure from the aerial uncalibrated image sequence is presented. Unlike previous methods, the method uses a factorization-based algorithm to recover 3D models' initial values and bundle adjustment to get accurate results. The focal lengths can be supposed to be the only unknown intrinsic parameters. The factorization-based method performs a projective reconstruction by using a linear factorization algorithm and upgrades the projective solution to a Euclidean one by enforcing some metric constraints. Bundle adjustment refines a visual reconstruction to produce jointly optimal structure and viewing parameter estimates when we get the ideal initial values from the factorization-based methods. Experiments results on synthetic and real image sequences verified the new approach's precise and efficiency
{"title":"3D structure from uncalibrated image sequence","authors":"Dan Fu, Zhiqiang Qiu, Qifeng Yu","doi":"10.1109/ISSCAA.2006.1627616","DOIUrl":"https://doi.org/10.1109/ISSCAA.2006.1627616","url":null,"abstract":"A new approach to recover 3D structure from the aerial uncalibrated image sequence is presented. Unlike previous methods, the method uses a factorization-based algorithm to recover 3D models' initial values and bundle adjustment to get accurate results. The focal lengths can be supposed to be the only unknown intrinsic parameters. The factorization-based method performs a projective reconstruction by using a linear factorization algorithm and upgrades the projective solution to a Euclidean one by enforcing some metric constraints. Bundle adjustment refines a visual reconstruction to produce jointly optimal structure and viewing parameter estimates when we get the ideal initial values from the factorization-based methods. Experiments results on synthetic and real image sequences verified the new approach's precise and efficiency","PeriodicalId":275436,"journal":{"name":"2006 1st International Symposium on Systems and Control in Aerospace and Astronautics","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116442488","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 : 2006-05-08DOI: 10.1109/ISSCAA.2006.1627631
Shigang Wang, Y. Fu
A new method is introduced for collecting machining quality data. The collector is a kind of portable electronic instrument. Through robust statistics, put forward a robust estimation algorithm to estimate measuring results and error. It can void influence of gross error. Considering new ideal, this paper applies fuzzy subset theory to put forward a robust fuzzy logic controller and accomplish machining quality fuzzy automatic control
{"title":"Research on robust fuzzy control technology of machining quality","authors":"Shigang Wang, Y. Fu","doi":"10.1109/ISSCAA.2006.1627631","DOIUrl":"https://doi.org/10.1109/ISSCAA.2006.1627631","url":null,"abstract":"A new method is introduced for collecting machining quality data. The collector is a kind of portable electronic instrument. Through robust statistics, put forward a robust estimation algorithm to estimate measuring results and error. It can void influence of gross error. Considering new ideal, this paper applies fuzzy subset theory to put forward a robust fuzzy logic controller and accomplish machining quality fuzzy automatic control","PeriodicalId":275436,"journal":{"name":"2006 1st International Symposium on Systems and Control in Aerospace and Astronautics","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116860985","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}
The architecture of a ground semi-physical simulator is proposed, which can test the methodologies of the satellite formation flying, autonomous rendezvous and docking, and space robot capture. There are five subsystems in the ground simulator: the console system, the translation system, the rotation system, the target system, and the vision system. The console system is the most important part in the underlying system, which generates control commands based on the control algorithm. The translation system and the rotation system simulate 6 DOF motion of the follower, and the target system simulates 6 DOF motion of the target. The vision system is included in the feedback block. Through the Ethernet, the whole closed-loop system is developed and the provided real-time network communication for the system is introduced
{"title":"A ground semi-physical simulator for satellite autonomous rendezvous and space robot capture","authors":"Weinan Xie, Guangcheng Ma, Qiyong Wen, Hongwei Xia","doi":"10.1109/ISSCAA.2006.1627412","DOIUrl":"https://doi.org/10.1109/ISSCAA.2006.1627412","url":null,"abstract":"The architecture of a ground semi-physical simulator is proposed, which can test the methodologies of the satellite formation flying, autonomous rendezvous and docking, and space robot capture. There are five subsystems in the ground simulator: the console system, the translation system, the rotation system, the target system, and the vision system. The console system is the most important part in the underlying system, which generates control commands based on the control algorithm. The translation system and the rotation system simulate 6 DOF motion of the follower, and the target system simulates 6 DOF motion of the target. The vision system is included in the feedback block. Through the Ethernet, the whole closed-loop system is developed and the provided real-time network communication for the system is introduced","PeriodicalId":275436,"journal":{"name":"2006 1st International Symposium on Systems and Control in Aerospace and Astronautics","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125995847","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 : 2006-05-08DOI: 10.1109/ISSCAA.2006.1627478
Q. Hu, G. Ma, Zhong Shi
A new hybrid control system for the rotational maneuver and vibration suppression of an orbiting spacecraft with flexible appendage is designed. The proposed control system includes the attitude controller designed by integral variable structure control (IVSC) concept, and flexible vibration attenuator designed by input shaping technique. The rational for this hybrid control scheme is that the integral variable structure controller can achieve good precision pointing, even in the presence of parameter variations, uncertainties, and/or disturbances, whereas the shaped input attenuator is applied to actively suppress the undesirable vibrations excited by the rapid maneuvers. An additional attractive feature of the control system is that it integrates the pulse-width pulse-frequency (PWPF) modulator with the input shaper to accomplish the vibration reductions for the flexible spacecraft. Numerical simulation results for the spacecraft model show precise attitude control and vibration suppression
{"title":"Integral variable structure/input shaping control of flexible spacecraft","authors":"Q. Hu, G. Ma, Zhong Shi","doi":"10.1109/ISSCAA.2006.1627478","DOIUrl":"https://doi.org/10.1109/ISSCAA.2006.1627478","url":null,"abstract":"A new hybrid control system for the rotational maneuver and vibration suppression of an orbiting spacecraft with flexible appendage is designed. The proposed control system includes the attitude controller designed by integral variable structure control (IVSC) concept, and flexible vibration attenuator designed by input shaping technique. The rational for this hybrid control scheme is that the integral variable structure controller can achieve good precision pointing, even in the presence of parameter variations, uncertainties, and/or disturbances, whereas the shaped input attenuator is applied to actively suppress the undesirable vibrations excited by the rapid maneuvers. An additional attractive feature of the control system is that it integrates the pulse-width pulse-frequency (PWPF) modulator with the input shaper to accomplish the vibration reductions for the flexible spacecraft. Numerical simulation results for the spacecraft model show precise attitude control and vibration suppression","PeriodicalId":275436,"journal":{"name":"2006 1st International Symposium on Systems and Control in Aerospace and Astronautics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129359135","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 : 2006-05-08DOI: 10.1109/ISSCAA.2006.1627678
Jian Cao, Chun-Ming Yang, Yan Yang
To reduce the complexity of evaluating missile systems performance, a new fuzzy AHP model based on the analytic hierarchy process (AHP) and basic theory of the trigonometrical fuzzy number (TFN) was given and corresponding evaluation process was introduced. In Matlab environment an illustrative example was presented and analyzed. The results indicate that applying TFN and LLSM to AHP makes the model combine subjective analysis with quantitative analysis effectively, synthesize group opinions adequately, and acquire the consistent degree of decisions under each criterion from different experts clearly. In addition, the model can be operated by programming easily and applied widely due to its simple, normative arithmetic formulas
{"title":"A study on the TFN-based AHP model for the evaluation of missile systems performance","authors":"Jian Cao, Chun-Ming Yang, Yan Yang","doi":"10.1109/ISSCAA.2006.1627678","DOIUrl":"https://doi.org/10.1109/ISSCAA.2006.1627678","url":null,"abstract":"To reduce the complexity of evaluating missile systems performance, a new fuzzy AHP model based on the analytic hierarchy process (AHP) and basic theory of the trigonometrical fuzzy number (TFN) was given and corresponding evaluation process was introduced. In Matlab environment an illustrative example was presented and analyzed. The results indicate that applying TFN and LLSM to AHP makes the model combine subjective analysis with quantitative analysis effectively, synthesize group opinions adequately, and acquire the consistent degree of decisions under each criterion from different experts clearly. In addition, the model can be operated by programming easily and applied widely due to its simple, normative arithmetic formulas","PeriodicalId":275436,"journal":{"name":"2006 1st International Symposium on Systems and Control in Aerospace and Astronautics","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129821591","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 : 2006-05-08DOI: 10.1109/ISSCAA.2006.1627440
Hong-chao Li, Zhong-ke Shi, Weixian Tang
An on-line method based on robust mu analysis is presented to evaluate the stability margin of multi-loop aeroservoelastic system from flight testing data. The flight data is preprocessed to remove noise by wavelet filter in time-frequency domain. The method for stability analysis is described and the classical stability margin used for single-input-single-output (SISO) system has been extended to multi-loop system. With the present definition for uncertainty, the guaranteed bounds on gain and phase margin can been calculated for a specified mu value. A nonparametric identification is applied to determine the open-loop transfer function from testing data. This method enables us to implement on-line stability evaluation without theory model. Finally, the analysis results are compared with return difference matrix method to illustrate the efficiency of the new method
{"title":"On-line robust aeroservoelastic stability margin analysis from wavelet-processed flight testing data","authors":"Hong-chao Li, Zhong-ke Shi, Weixian Tang","doi":"10.1109/ISSCAA.2006.1627440","DOIUrl":"https://doi.org/10.1109/ISSCAA.2006.1627440","url":null,"abstract":"An on-line method based on robust mu analysis is presented to evaluate the stability margin of multi-loop aeroservoelastic system from flight testing data. The flight data is preprocessed to remove noise by wavelet filter in time-frequency domain. The method for stability analysis is described and the classical stability margin used for single-input-single-output (SISO) system has been extended to multi-loop system. With the present definition for uncertainty, the guaranteed bounds on gain and phase margin can been calculated for a specified mu value. A nonparametric identification is applied to determine the open-loop transfer function from testing data. This method enables us to implement on-line stability evaluation without theory model. Finally, the analysis results are compared with return difference matrix method to illustrate the efficiency of the new method","PeriodicalId":275436,"journal":{"name":"2006 1st International Symposium on Systems and Control in Aerospace and Astronautics","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130515017","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 : 2006-05-08DOI: 10.1109/ISSCAA.2006.1627534
Muhammad Shafiq, T. Khan
Adaptive tracking of nonlinear dynamic plants is an essential element of many control applications. The main difficulty felt in establishing the tracking of nonlinear dynamic plants is the computational complexity in controller design. This paper presents novel technique for adaptive tracking of a class of nonlinear dynamic plants based on a new control oriented model known as U-model. The use of U-model alleviates the computational complexity of the nonlinear controller design that occurs when using other modelling frame works such as NARMAX model. The U-model is utilized to design an adaptive inverse controller by using a simple root-solving algorithm of Newton-Raphson. The synergy of U-model with AIC structure has provided an effective and straight forward method for adaptive tracking of nonlinear plants. The effectiveness of the proposed technique is justified by simulating two nonlinear plants and speed control of a laboratory scale DC motor in real-time
{"title":"Newton-Raphson based adaptive inverse control scheme for tracking of nonlinear dynamic plants","authors":"Muhammad Shafiq, T. Khan","doi":"10.1109/ISSCAA.2006.1627534","DOIUrl":"https://doi.org/10.1109/ISSCAA.2006.1627534","url":null,"abstract":"Adaptive tracking of nonlinear dynamic plants is an essential element of many control applications. The main difficulty felt in establishing the tracking of nonlinear dynamic plants is the computational complexity in controller design. This paper presents novel technique for adaptive tracking of a class of nonlinear dynamic plants based on a new control oriented model known as U-model. The use of U-model alleviates the computational complexity of the nonlinear controller design that occurs when using other modelling frame works such as NARMAX model. The U-model is utilized to design an adaptive inverse controller by using a simple root-solving algorithm of Newton-Raphson. The synergy of U-model with AIC structure has provided an effective and straight forward method for adaptive tracking of nonlinear plants. The effectiveness of the proposed technique is justified by simulating two nonlinear plants and speed control of a laboratory scale DC motor in real-time","PeriodicalId":275436,"journal":{"name":"2006 1st International Symposium on Systems and Control in Aerospace and Astronautics","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127953967","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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