Pub Date : 2003-12-19DOI: 10.1109/ITSC.2003.1252725
G. Jiang, Ruoqi Zhang
Based on the relative relationship of the traffic volume of segments on the urban road network, we studied the optimal space distribution of detectors with statistic analysis techniques. Then we proposed the criteria of installing detectors on the urban roads, on the other hand, we predicted and checked out the non-detectors segment travel time using neural network technique of mix-structure algorithm with the data of the road network of Changchun City, China. The research gives a way to solve the optimal space distribution of detectors on urban arterial road and non-detected segment travel time prediction with detected segment traffic information.
{"title":"Travel time prediction for urban arterial road","authors":"G. Jiang, Ruoqi Zhang","doi":"10.1109/ITSC.2003.1252725","DOIUrl":"https://doi.org/10.1109/ITSC.2003.1252725","url":null,"abstract":"Based on the relative relationship of the traffic volume of segments on the urban road network, we studied the optimal space distribution of detectors with statistic analysis techniques. Then we proposed the criteria of installing detectors on the urban roads, on the other hand, we predicted and checked out the non-detectors segment travel time using neural network technique of mix-structure algorithm with the data of the road network of Changchun City, China. The research gives a way to solve the optimal space distribution of detectors on urban arterial road and non-detected segment travel time prediction with detected segment traffic information.","PeriodicalId":123155,"journal":{"name":"Proceedings of the 2003 IEEE International Conference on Intelligent Transportation Systems","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122718557","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 : 2003-12-19DOI: 10.1109/ITSC.2003.1252625
Jianmin Sun, Qingmei Yang, Fengying Sun, Bao-Ping Ma
The active control suspension system can improve both the riding comfort and handling safety in various operation conditions. In this paper, according to the evaluation method of riding comfort and handling safety of vehicle, the acceleration of the sprung mass, dynamic tyre load between wheels and the unsprung mass are determined as the evaluation targets of suspension performance. The least mean squares (LMS) adaptive algorithm is used in active suspension system. With adjusting the weight of the adaptive filter, the minimum quadratic performance index is obtained. For two-DOF vehicle suspension model, the sky-hook control, generalized adaptive control and LMS adaptive control are studied. The simulation results show that LMS adaptive control algorithm is not only simple but also remarkably effective.
{"title":"Studies on vehicle active suspension based on LMS adaptive algorithm","authors":"Jianmin Sun, Qingmei Yang, Fengying Sun, Bao-Ping Ma","doi":"10.1109/ITSC.2003.1252625","DOIUrl":"https://doi.org/10.1109/ITSC.2003.1252625","url":null,"abstract":"The active control suspension system can improve both the riding comfort and handling safety in various operation conditions. In this paper, according to the evaluation method of riding comfort and handling safety of vehicle, the acceleration of the sprung mass, dynamic tyre load between wheels and the unsprung mass are determined as the evaluation targets of suspension performance. The least mean squares (LMS) adaptive algorithm is used in active suspension system. With adjusting the weight of the adaptive filter, the minimum quadratic performance index is obtained. For two-DOF vehicle suspension model, the sky-hook control, generalized adaptive control and LMS adaptive control are studied. The simulation results show that LMS adaptive control algorithm is not only simple but also remarkably effective.","PeriodicalId":123155,"journal":{"name":"Proceedings of the 2003 IEEE International Conference on Intelligent Transportation Systems","volume":"499 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122950459","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 : 2003-12-19DOI: 10.1109/ITSC.2003.1252652
Z. Hou, Jian-xin Xu
In this paper, an iterative learning control scheme is developed to the traffic density control in a macroscopic level freeway environment. With rigorous analysis, the proposed intelligent control scheme guarantees the asymptotic convergence of the traffic density to the desired one. The control scheme is applied to a freeway model, and simulation results confirm the efficacy of the proposed approach.
{"title":"Freeway traffic density control using iterative learning control approach","authors":"Z. Hou, Jian-xin Xu","doi":"10.1109/ITSC.2003.1252652","DOIUrl":"https://doi.org/10.1109/ITSC.2003.1252652","url":null,"abstract":"In this paper, an iterative learning control scheme is developed to the traffic density control in a macroscopic level freeway environment. With rigorous analysis, the proposed intelligent control scheme guarantees the asymptotic convergence of the traffic density to the desired one. The control scheme is applied to a freeway model, and simulation results confirm the efficacy of the proposed approach.","PeriodicalId":123155,"journal":{"name":"Proceedings of the 2003 IEEE International Conference on Intelligent Transportation Systems","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132603045","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 : 2003-12-19DOI: 10.1109/ITSC.2003.1252701
Li-xin Zhu, Fei-yue Wang
Rapid advances in the real-time embedded operating systems necessitate the development of Internet oriented application specific embedded operating systems. The ASOS (application specific embedded operating systems) has now become a promising research direction of the embedded operating system. The paper clarifies the concept of the ASOS, and takes the embedded operating system applied in the traffic signal controller we are now developing to illustrate the main characteristics of the ASOS. Benefits from the CBSE (component-based software engineering) include system quality improvement, shorter time to market, integration of complex systems, etc. However, as for the embedded system, the component-based technology and theories still in an exploration period, though many projects are carried on. In this paper, we present the process of our approach to construct the ASOS based on the component technology.
实时嵌入式操作系统的快速发展要求开发面向Internet应用的嵌入式操作系统。专用嵌入式操作系统ASOS (application - specific embedded operating system)已成为嵌入式操作系统的一个很有前途的研究方向。本文阐述了ASOS的概念，并以目前正在开发的交通信号控制器中应用的嵌入式操作系统为例，阐述了ASOS的主要特点。来自CBSE(基于组件的软件工程)的好处包括系统质量的改进，更短的上市时间，复杂系统的集成，等等。然而，对于嵌入式系统而言，基于组件的技术和理论虽然已经开展了许多项目，但仍处于探索阶段。在本文中，我们提出了基于组件技术构建ASOS的方法。
{"title":"Component-based constructing approach for application specific embedded operating systems","authors":"Li-xin Zhu, Fei-yue Wang","doi":"10.1109/ITSC.2003.1252701","DOIUrl":"https://doi.org/10.1109/ITSC.2003.1252701","url":null,"abstract":"Rapid advances in the real-time embedded operating systems necessitate the development of Internet oriented application specific embedded operating systems. The ASOS (application specific embedded operating systems) has now become a promising research direction of the embedded operating system. The paper clarifies the concept of the ASOS, and takes the embedded operating system applied in the traffic signal controller we are now developing to illustrate the main characteristics of the ASOS. Benefits from the CBSE (component-based software engineering) include system quality improvement, shorter time to market, integration of complex systems, etc. However, as for the embedded system, the component-based technology and theories still in an exploration period, though many projects are carried on. In this paper, we present the process of our approach to construct the ASOS based on the component technology.","PeriodicalId":123155,"journal":{"name":"Proceedings of the 2003 IEEE International Conference on Intelligent Transportation Systems","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132811172","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 : 2003-12-19DOI: 10.1109/ITSC.2003.1252687
Junwei Lee, Su Song
Urban transportation systems are very complicated systems, which present a lot of problems on modeling. This paper gives an overview of traffic models, points out the strongpoint and shortcomings of the macro- and micro-models, analyses reasons for hybrid system modeling of urban traffic. This paper gives the reason and an overview of the hybrid system modeling of urban transportation systems.
{"title":"Modeling urban transportation systems with hybrid systems: an overview","authors":"Junwei Lee, Su Song","doi":"10.1109/ITSC.2003.1252687","DOIUrl":"https://doi.org/10.1109/ITSC.2003.1252687","url":null,"abstract":"Urban transportation systems are very complicated systems, which present a lot of problems on modeling. This paper gives an overview of traffic models, points out the strongpoint and shortcomings of the macro- and micro-models, analyses reasons for hybrid system modeling of urban traffic. This paper gives the reason and an overview of the hybrid system modeling of urban transportation systems.","PeriodicalId":123155,"journal":{"name":"Proceedings of the 2003 IEEE International Conference on Intelligent Transportation Systems","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133910342","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 : 2003-12-19DOI: 10.1109/ITSC.2003.1252629
S. Edelkamp, S. Jabbar, Thomas Willhalm
This paper provides a novel approach for optimal route planning making efficient use of the underlying geometrical structure. It combines classical AI exploration with computational geometry. Given a set of global positioning system (GPS) trajectories, the input is refined by geometric filtering and rounding algorithms. For constructing the graph and the according point localization structure, fast scan-line and divide-and-conquer algorithms are applied. For speeding up the optimal on-line search algorithms, the geometrical structure of the inferred weighted graph is exploited in two ways. The graph is compressed while retaining the original information for unfolding resulting shortest paths. It is then annotated by lower bound refined topographic information; for example by the bounding boxes of all shortest paths that start with a given edge. The on-line planning system GPS-ROUTE implements the above techniques and provides a client-server Web interface to answer series of shortest-path or shortest-time queries.
{"title":"Geometric travel planning","authors":"S. Edelkamp, S. Jabbar, Thomas Willhalm","doi":"10.1109/ITSC.2003.1252629","DOIUrl":"https://doi.org/10.1109/ITSC.2003.1252629","url":null,"abstract":"This paper provides a novel approach for optimal route planning making efficient use of the underlying geometrical structure. It combines classical AI exploration with computational geometry. Given a set of global positioning system (GPS) trajectories, the input is refined by geometric filtering and rounding algorithms. For constructing the graph and the according point localization structure, fast scan-line and divide-and-conquer algorithms are applied. For speeding up the optimal on-line search algorithms, the geometrical structure of the inferred weighted graph is exploited in two ways. The graph is compressed while retaining the original information for unfolding resulting shortest paths. It is then annotated by lower bound refined topographic information; for example by the bounding boxes of all shortest paths that start with a given edge. The on-line planning system GPS-ROUTE implements the above techniques and provides a client-server Web interface to answer series of shortest-path or shortest-time queries.","PeriodicalId":123155,"journal":{"name":"Proceedings of the 2003 IEEE International Conference on Intelligent Transportation Systems","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133982631","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 : 2003-12-19DOI: 10.1109/ITSC.2003.1252717
Y. Zhaosheng, L. Shoufeng, W. Chuanjiu
In-vehicle information system (IVIS) is an important component of urban traffic flow guidance system (UTFGS). It consists of an input device, data storage, a driver information display monitor, processing modules, a voice synthesizer module and a communication module. Human-computer interface (HCI) is the comprehensive environment of manipulating IVIS. It is also the media of delivering and exchanging information between the driver and IVIS. A good HCI can minimize the driver's distraction, assure the driver's safety, and improve the efficiency of the human-computer interaction.
{"title":"Human-computer interface design for an in-vehicle information system","authors":"Y. Zhaosheng, L. Shoufeng, W. Chuanjiu","doi":"10.1109/ITSC.2003.1252717","DOIUrl":"https://doi.org/10.1109/ITSC.2003.1252717","url":null,"abstract":"In-vehicle information system (IVIS) is an important component of urban traffic flow guidance system (UTFGS). It consists of an input device, data storage, a driver information display monitor, processing modules, a voice synthesizer module and a communication module. Human-computer interface (HCI) is the comprehensive environment of manipulating IVIS. It is also the media of delivering and exchanging information between the driver and IVIS. A good HCI can minimize the driver's distraction, assure the driver's safety, and improve the efficiency of the human-computer interaction.","PeriodicalId":123155,"journal":{"name":"Proceedings of the 2003 IEEE International Conference on Intelligent Transportation Systems","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134158212","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 : 2003-12-19DOI: 10.1109/ITSC.2003.1252763
J.P. Wang, W. Tian, Z. Jin
With the rapid development of micro electron mechanical system, the performance of micro inertial sensors is being improved. Features of low cost and small volume of these sensors make them be applied widely in military and commercial fields. Because vehicle location and navigation system (VLNS) is the indispensable section in intelligent transportation system (ITS), study on micro inertial technique for VLNS is significant. In this paper a micro inertial navigation system (/spl mu/-INS) is designed using three single-axis microgyroscopes (EWTZ9G) and three microaccelerometers (ADXL150). The system has three modules, i.e., sensors module to measure angular rate and acceleration, data acquisition module to convert analog signal outputs of the sensors to digital signal, and data processing module to calculate necessary navigation information. Besides the loosely coupled Kalman filter, a simpler GPS-aided method is studied in the paper. Results of experiments show that integrated /spl mu/-INS/GPS meets the demand of location accuracy for VLNS in ITS.
{"title":"Study on integrated micro inertial navigation system/GPS for land vehicles","authors":"J.P. Wang, W. Tian, Z. Jin","doi":"10.1109/ITSC.2003.1252763","DOIUrl":"https://doi.org/10.1109/ITSC.2003.1252763","url":null,"abstract":"With the rapid development of micro electron mechanical system, the performance of micro inertial sensors is being improved. Features of low cost and small volume of these sensors make them be applied widely in military and commercial fields. Because vehicle location and navigation system (VLNS) is the indispensable section in intelligent transportation system (ITS), study on micro inertial technique for VLNS is significant. In this paper a micro inertial navigation system (/spl mu/-INS) is designed using three single-axis microgyroscopes (EWTZ9G) and three microaccelerometers (ADXL150). The system has three modules, i.e., sensors module to measure angular rate and acceleration, data acquisition module to convert analog signal outputs of the sensors to digital signal, and data processing module to calculate necessary navigation information. Besides the loosely coupled Kalman filter, a simpler GPS-aided method is studied in the paper. Results of experiments show that integrated /spl mu/-INS/GPS meets the demand of location accuracy for VLNS in ITS.","PeriodicalId":123155,"journal":{"name":"Proceedings of the 2003 IEEE International Conference on Intelligent Transportation Systems","volume":"124 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134476527","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 : 2003-12-19DOI: 10.1109/ITSC.2003.1252773
Jun Zhao, X. Zhan
In this paper, dynamic control and noise elimination of adaptive inverse control are introduced. X-LMS adaptive inverse control algorithm and RLS adaptive inverse control algorithm are used to identify the parameters and design the controller. Simulating results show that ship manoeuvering can be improved with adaptive inverse control technology, moreover X-LMS adaptive inverse control algorithm has a better behavior on response characteristics, and RLS adaptive inverse control algorithm has a better behavior on noise elimination.
{"title":"Study on ship manoeuvering control based on adaptive inverse control technology","authors":"Jun Zhao, X. Zhan","doi":"10.1109/ITSC.2003.1252773","DOIUrl":"https://doi.org/10.1109/ITSC.2003.1252773","url":null,"abstract":"In this paper, dynamic control and noise elimination of adaptive inverse control are introduced. X-LMS adaptive inverse control algorithm and RLS adaptive inverse control algorithm are used to identify the parameters and design the controller. Simulating results show that ship manoeuvering can be improved with adaptive inverse control technology, moreover X-LMS adaptive inverse control algorithm has a better behavior on response characteristics, and RLS adaptive inverse control algorithm has a better behavior on noise elimination.","PeriodicalId":123155,"journal":{"name":"Proceedings of the 2003 IEEE International Conference on Intelligent Transportation Systems","volume":"129 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114011749","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 : 2003-12-19DOI: 10.1109/ITSC.2003.1252693
Xu Gang, ZhiMing Wu
A modeling method for controller in FMS is presented. This method is based upon the timed automata, and model checker tool UPPAAL is used to model, simulate and verify the FMS model. In the previous work about FMS modeling, the behavior of FMS is more emphasized than the performance, or vice versa. Because the time is included into the modeling method, the scheduling and controlling problems in FMS can be integrated into this model. The performance of the system can be guaranteed while the system behavior is controlled. Upon this model, the optimal scheduling and optimal controlling can also be checked and verified.
{"title":"Formal design and analysis of FMS controller","authors":"Xu Gang, ZhiMing Wu","doi":"10.1109/ITSC.2003.1252693","DOIUrl":"https://doi.org/10.1109/ITSC.2003.1252693","url":null,"abstract":"A modeling method for controller in FMS is presented. This method is based upon the timed automata, and model checker tool UPPAAL is used to model, simulate and verify the FMS model. In the previous work about FMS modeling, the behavior of FMS is more emphasized than the performance, or vice versa. Because the time is included into the modeling method, the scheduling and controlling problems in FMS can be integrated into this model. The performance of the system can be guaranteed while the system behavior is controlled. Upon this model, the optimal scheduling and optimal controlling can also be checked and verified.","PeriodicalId":123155,"journal":{"name":"Proceedings of the 2003 IEEE International Conference on Intelligent Transportation Systems","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2003-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114146449","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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