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Fifth World Congress on Intelligent Control and Automation (IEEE Cat. No.04EX788)最新文献

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Identification of time-varying delay systems using particle swarm optimization 基于粒子群算法的时变时滞系统辨识
Fifth World Congress on Intelligent Control and Automation (IEEE Cat. No.04EX788) Pub Date : 2004-06-15 DOI: 10.1109/WCICA.2004.1340586
Jing Ke, Y. Qiao, Jixin Qian
{"title":"Identification of time-varying delay systems using particle swarm optimization","authors":"Jing Ke, Y. Qiao, Jixin Qian","doi":"10.1109/WCICA.2004.1340586","DOIUrl":"https://doi.org/10.1109/WCICA.2004.1340586","url":null,"abstract":"Particle swarm optimization algorithm is a new evolutionary computation method, which is applicable to complex optimization problems that are nonlinear, nondifferentiable and multimodal. A method for identification of time-varying delay systems using particle swarm optimization is proposed. The basic idea of the method is that the identification problems are cast as mixed-integer nonlinear programming problems, and then particle swarm optimization algorithm is used to find the optimal estimation of the time-varying parameters. Simulation results reveal that the suggested identification scheme possesses a good tracking ability to the time-varying delay systems.","PeriodicalId":331407,"journal":{"name":"Fifth World Congress on Intelligent Control and Automation (IEEE Cat. No.04EX788)","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114804341","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}
引用次数: 2
An intelligent control algorithm on the capacity for information hiding in images 一种基于图像信息隐藏能力的智能控制算法
Fifth World Congress on Intelligent Control and Automation (IEEE Cat. No.04EX788) Pub Date : 2004-06-15 DOI: 10.1109/WCICA.2004.1343087
Sen Bai, Zhong-yu Hu, Yuqiang Cao, Bo Zhao, Xiao Wang
{"title":"An intelligent control algorithm on the capacity for information hiding in images","authors":"Sen Bai, Zhong-yu Hu, Yuqiang Cao, Bo Zhao, Xiao Wang","doi":"10.1109/WCICA.2004.1343087","DOIUrl":"https://doi.org/10.1109/WCICA.2004.1343087","url":null,"abstract":"In the context of image based covert communication, it is of major importance to estimate and control the maximum information hiding capacity for a specific image. An adaptive algorithm is presented for maximizing the embedding capacity while achieving specified image fidelity. This algorithm, which makes use of the wavelet transform and, meanwhile, considers the masking characteristics of the human visual system (HVS). In contrast to conventional least significant bit (LSB) steganographic methods operating in the spatial domain, masking is accomplished pixel by pixel by taking into account the texture and the luminance content of all the image subbands. Experimental results show that the proposed algorithm is effective to obtain an estimate of the number of bits that can be hidden in still images, and the algorithm can effectively control the amount of the hidden information adaptively to the requirement of imperceptibility in covert communication.","PeriodicalId":331407,"journal":{"name":"Fifth World Congress on Intelligent Control and Automation (IEEE Cat. No.04EX788)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114822705","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}
引用次数: 0
A new switching function for variable structure control 一种新的变结构控制开关函数
Fifth World Congress on Intelligent Control and Automation (IEEE Cat. No.04EX788) Pub Date : 2004-06-15 DOI: 10.1109/WCICA.2004.1340796
Jianbo Hu, Manhong Shi, Yu-Chu Tian
{"title":"A new switching function for variable structure control","authors":"Jianbo Hu, Manhong Shi, Yu-Chu Tian","doi":"10.1109/WCICA.2004.1340796","DOIUrl":"https://doi.org/10.1109/WCICA.2004.1340796","url":null,"abstract":"A new switching function for variable structure control is proposed in this paper for linear continuous-time systems with uncertainties. It consists of an ordinary linear term plus an integral term and allows direct use of the pole placement technique. Different design methods are used for systems with matched and mismatched uncertainties. For systems with matched uncertainties, the switching function is synthesised based on the Riccati equation. For systems with mismatched uncertainties, the switching function is designed using the technique of linear matrix inequality. Variable structure controllers are developed according to the reaching condition of the sliding mode. Furthermore, the results for continuous-time systems are extended to discrete-time systems. The proposed approach is illustrated through numerical simulations.","PeriodicalId":331407,"journal":{"name":"Fifth World Congress on Intelligent Control and Automation (IEEE Cat. No.04EX788)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124351313","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}
引用次数: 10
A comparison of active queue management algorithms 主动队列管理算法的比较
Fifth World Congress on Intelligent Control and Automation (IEEE Cat. No.04EX788) Pub Date : 2004-06-15 DOI: 10.1109/WCICA.2004.1340874
Shijuan Zhang, Jinsheng Sun
{"title":"A comparison of active queue management algorithms","authors":"Shijuan Zhang, Jinsheng Sun","doi":"10.1109/WCICA.2004.1340874","DOIUrl":"https://doi.org/10.1109/WCICA.2004.1340874","url":null,"abstract":"Active queue management (AQM) is a very active research area in network congestion control. A number of active queue management algorithms such as PI controller, DRED, SRED, Blue, REM, and PD-RED have been proposed in the past few years. This paper presents a comparative study of these algorithms using simulations. The performance metric used in the study is queue length. Our results demonstrate that PD-RED is more effective at stabilizing the queue length, and the performance of PD-RED is obviously better than that of PI controller, DRED, SRED, Blue and REM.","PeriodicalId":331407,"journal":{"name":"Fifth World Congress on Intelligent Control and Automation (IEEE Cat. No.04EX788)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124412081","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}
引用次数: 1
Variable structure control design for uncertain distributed parameter systems with nonlinear input 非线性输入不确定分布参数系统的变结构控制设计
Fifth World Congress on Intelligent Control and Automation (IEEE Cat. No.04EX788) Pub Date : 2004-06-15 DOI: 10.1109/WCICA.2004.1340497
B. Cui, Maoan Han, Hui-Zhong Yang
{"title":"Variable structure control design for uncertain distributed parameter systems with nonlinear input","authors":"B. Cui, Maoan Han, Hui-Zhong Yang","doi":"10.1109/WCICA.2004.1340497","DOIUrl":"https://doi.org/10.1109/WCICA.2004.1340497","url":null,"abstract":"The variable structure control problems of a class of uncertain distributed parameter systems with nonlinear input under the Neumann boundary conditions are studied by using inequality analysis as the main mathematical tool, and a robust variable structure controller is derived.","PeriodicalId":331407,"journal":{"name":"Fifth World Congress on Intelligent Control and Automation (IEEE Cat. No.04EX788)","volume":"141 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124476906","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}
引用次数: 0
The simulation and analysis of DC motor driver system for the hybrid electric vehicle 混合动力汽车直流电机驱动系统仿真与分析
Fifth World Congress on Intelligent Control and Automation (IEEE Cat. No.04EX788) Pub Date : 2004-06-15 DOI: 10.1109/WCICA.2004.1343133
Tao Zhao, Qunjing Wang, Weidong Jiang, Youyuan Ni
{"title":"The simulation and analysis of DC motor driver system for the hybrid electric vehicle","authors":"Tao Zhao, Qunjing Wang, Weidong Jiang, Youyuan Ni","doi":"10.1109/WCICA.2004.1343133","DOIUrl":"https://doi.org/10.1109/WCICA.2004.1343133","url":null,"abstract":"The successful design of the cost-effective electric driver system for the hybrid electric vehicle (HEV) depends chiefly on high efficient PWM converter and advanced control strategy. Based on the visual simulation software MATLAB/SIMULINK, the DC motor and its PWM converter composed of different switch devices were modeled and simulated under various working pattern and switch frequency. The self-tuning modifying algorithm based on fuzzy control was introduced to model the percentage and integral factor of speed controller for the DC motor driver system. Compared with the traditional control algorithm, this method helps to reduce the over-regulating of system, to eliminate oscillation, and to quicken the system respondence as well. In all, the application of the method in the simulation is satisfying.","PeriodicalId":331407,"journal":{"name":"Fifth World Congress on Intelligent Control and Automation (IEEE Cat. No.04EX788)","volume":"139 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127591070","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}
引用次数: 4
Study on the fuzzy AC power flow model 模糊交流潮流模型的研究
Fifth World Congress on Intelligent Control and Automation (IEEE Cat. No.04EX788) Pub Date : 2004-06-15 DOI: 10.1109/WCICA.2004.1343689
J. Hao, Libao Shi, Guoyu Xu, Yongsheng Xie
{"title":"Study on the fuzzy AC power flow model","authors":"J. Hao, Libao Shi, Guoyu Xu, Yongsheng Xie","doi":"10.1109/WCICA.2004.1343689","DOIUrl":"https://doi.org/10.1109/WCICA.2004.1343689","url":null,"abstract":"The method of fuzzy power flow analysis is extended from DC model to AC one, and the nonlinear, linear and multi-linear models are constructed to obtain the possibility distribution of load flow efficiently in accordance with the corresponding fuzzy sets theory including the /spl lambda/ - level set characteristic of fuzzy number operations and decompose theorem. Some technical problems, such as the solution for the nonlinear fuzzy power flow, the solution of possibility distribution for the linear fuzzy power flow and the selection of linearization point, et al., are studied further. The validity and effectiveness of the proposed models and methods have been demonstrated on the corresponding numerical results.","PeriodicalId":331407,"journal":{"name":"Fifth World Congress on Intelligent Control and Automation (IEEE Cat. No.04EX788)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127666937","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}
引用次数: 5
Limited memory filter for 3D relative position orientation estimation of maneuvering target 基于有限记忆滤波的机动目标三维相对位置估计
Fifth World Congress on Intelligent Control and Automation (IEEE Cat. No.04EX788) Pub Date : 2004-06-15 DOI: 10.1109/WCICA.2004.1342351
Feili Hou, F. Zhu
{"title":"Limited memory filter for 3D relative position orientation estimation of maneuvering target","authors":"Feili Hou, F. Zhu","doi":"10.1109/WCICA.2004.1342351","DOIUrl":"https://doi.org/10.1109/WCICA.2004.1342351","url":null,"abstract":"In a vision-based positioning system, noise in the image features results in errors in 3D reconstruction, and thereby, causes a serious degradation in individual 3D object pose (position and orientation) estimation. To find a solution for this problem, a filter approach is presented for more accurate relative 3D pose estimation of a moving object with respect to the vision sensor system. Different from previous schemes that were limited to the assumption that the relative motion between the target and the camera is smooth and slow, this approach is implementable for a maneuvering target without a prior knowledge about its dynamics. And the computation load is much reduced by avoiding the need of EFK. This filter is composed of a maneuver detector and a filter updater. First, by analyzing the effect of image noise on the pose estimate error, linear measure equations relating the nominal pose parameters (obtained by 3D reconstruction) and the true ones are proposed. Then, a maneuver detector of maximum detection probability is deduced, and two sub-optimal detectors for quick maneuver and slow maneuver are further developed respectively. When a maneuver is declared, updating is performed with limited memory filtering. Experiment results verify the effectiveness of this approach.","PeriodicalId":331407,"journal":{"name":"Fifth World Congress on Intelligent Control and Automation (IEEE Cat. No.04EX788)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127752301","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}
引用次数: 1
Dynamic management of real time QoS according to (m, k)-firm 基于(m, k)-firm的实时QoS动态管理
Fifth World Congress on Intelligent Control and Automation (IEEE Cat. No.04EX788) Pub Date : 2004-06-15 DOI: 10.1109/WCICA.2004.1343808
Hongxia Yin, Zhi Wang, Jiming Chen, Youxian Sun, Anise Kouba, Yeqiong Song
{"title":"Dynamic management of real time QoS according to (m, k)-firm","authors":"Hongxia Yin, Zhi Wang, Jiming Chen, Youxian Sun, Anise Kouba, Yeqiong Song","doi":"10.1109/WCICA.2004.1343808","DOIUrl":"https://doi.org/10.1109/WCICA.2004.1343808","url":null,"abstract":"A model of real time QoS (quality of service) according to constraint of (m, k)-firm offers more flexibility and a better use of resources compared to guaranteed QoS. It opens new prospects for the implementation of the adaptive management mechanisms of QoS in real time networks and systems. To take into account this new type of constraint during the scheduling of access to the resources, the scheduling algorithms of QoS developed for the hard real time system (for example EDF, FP) and for the hard real time network (for example WFQ) must be extended. This article first presents a state of the art on the principal scheduling algorithms developed for the real time (m, k)-firm guarantee, then two algorithms of our recent work: E-DBP and (m, k)-WF/sup 2/Q. We also define the notion of the gracious degradation of QoS according to (m, k)-firm and discuss its application to dynamic management of QoS in the networks.","PeriodicalId":331407,"journal":{"name":"Fifth World Congress on Intelligent Control and Automation (IEEE Cat. No.04EX788)","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126282715","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}
引用次数: 1
A simple direct-torque fuzzy control of permanent magnet synchronous motor driver 永磁同步电机驱动器的直接转矩模糊控制
Fifth World Congress on Intelligent Control and Automation (IEEE Cat. No.04EX788) Pub Date : 2004-06-15 DOI: 10.1109/WCICA.2004.1342379
Wang Jun, Peng Hong, Jiahua Yu
{"title":"A simple direct-torque fuzzy control of permanent magnet synchronous motor driver","authors":"Wang Jun, Peng Hong, Jiahua Yu","doi":"10.1109/WCICA.2004.1342379","DOIUrl":"https://doi.org/10.1109/WCICA.2004.1342379","url":null,"abstract":"A new fuzzy direct torque control scheme for permanent magnet synchronous motor drive is proposed in order to improve system stability and reduce the ripple of torque and stator flux linkage. Zero voltage space vector is used to obtain a new fuzzy-ruler table. So, Fuzzy rulers are simplified for shorting computation time. Finally, simulation results verify the superior operation performance.","PeriodicalId":331407,"journal":{"name":"Fifth World Congress on Intelligent Control and Automation (IEEE Cat. No.04EX788)","volume":"128 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128133700","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}
引用次数: 8
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