Dandan Dong, Zhongwei Li, Hengxu Zhang, Yufeng Guo, Tao Zhao
Using frequency data of the Northwest Power Grid from Feb. 15th to 28th, 2013 that is measured by PMU-light units in Shandong University, the steady state characteristics of frequency are analyzed in this paper. Duration and number of low-frequency and high-frequency events are listed. Statistics of daily highest, lowest and average frequency values are given. Ensemble averaged frequency values are calculated. Characteristics of steady-state frequency in the Northwest Power Grid are summarized and influence factors of frequency are discussed. The influence of the proportion of wind power on the frequency quality is simulated. The necessity of the application of a new frequency control method called DFR (Demand as Frequency Controlled Reserve) in the Northwest Power Grid is discussed.
{"title":"Analysis of the Steady State Characteristics and Regulation Strategies of the Frequency in the Northwest Power Grid","authors":"Dandan Dong, Zhongwei Li, Hengxu Zhang, Yufeng Guo, Tao Zhao","doi":"10.1109/IMCCC.2014.14","DOIUrl":"https://doi.org/10.1109/IMCCC.2014.14","url":null,"abstract":"Using frequency data of the Northwest Power Grid from Feb. 15th to 28th, 2013 that is measured by PMU-light units in Shandong University, the steady state characteristics of frequency are analyzed in this paper. Duration and number of low-frequency and high-frequency events are listed. Statistics of daily highest, lowest and average frequency values are given. Ensemble averaged frequency values are calculated. Characteristics of steady-state frequency in the Northwest Power Grid are summarized and influence factors of frequency are discussed. The influence of the proportion of wind power on the frequency quality is simulated. The necessity of the application of a new frequency control method called DFR (Demand as Frequency Controlled Reserve) in the Northwest Power Grid is discussed.","PeriodicalId":152074,"journal":{"name":"2014 Fourth International Conference on Instrumentation and Measurement, Computer, Communication and Control","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134631723","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}
Wang Rongxin, Xiu Debin, Zhou Yushan, Liu Congning, Shi Yunbo
Massive historical data are stored in chlorine gas monitoring network. So that prediction algorithm of data mining is used to dig historical data not only can make the redundant data reused, but also can forecast the network trend and improve the network early warning model. The chlorine gas monitoring wireless sensor network based on ZigBee was designed in this paper. Then Fletcher-Reeves algorithm was added to dig historical data in the network, forecast the network trend and improve the early warning model. The predicted concentration of chlorine data were trained by data mining model. The maximum relative error between predicted concentration and measured concentration was 11.08%, and the maximum average error was 7.36%. And it can satisfy actual requirements.
{"title":"Data Mining Research in Early Warning Model of Chlorine Gas Monitoring Wireless Sensor Network","authors":"Wang Rongxin, Xiu Debin, Zhou Yushan, Liu Congning, Shi Yunbo","doi":"10.1109/IMCCC.2014.151","DOIUrl":"https://doi.org/10.1109/IMCCC.2014.151","url":null,"abstract":"Massive historical data are stored in chlorine gas monitoring network. So that prediction algorithm of data mining is used to dig historical data not only can make the redundant data reused, but also can forecast the network trend and improve the network early warning model. The chlorine gas monitoring wireless sensor network based on ZigBee was designed in this paper. Then Fletcher-Reeves algorithm was added to dig historical data in the network, forecast the network trend and improve the early warning model. The predicted concentration of chlorine data were trained by data mining model. The maximum relative error between predicted concentration and measured concentration was 11.08%, and the maximum average error was 7.36%. And it can satisfy actual requirements.","PeriodicalId":152074,"journal":{"name":"2014 Fourth International Conference on Instrumentation and Measurement, Computer, Communication and Control","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133876025","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 model for the leakage and diffusion of liquid ammonia tank established using the species transport and reaction module of Fluent in order to investigate the leakage of liquid ammonia due to storage tank failure. The corresponding influencing laws were obtained by changing the height of leakage source and the size of leakage aperture in the simulation. The potential hazard of liquid ammonia reserved at temperature and high pressure or low temperature and low pressure condition was obtained by comparison of simulation results. The results show that the high concentration of gas diffusion on the leeward side will increase with decreasing height of leakage source, the leakage rate of Ammonia tank and the concentration of gas diffusion on the same location increase as the size of leakage aperture increase, the distance and hazards of gas diffusion during the same time will increase with increasing when using storage mode of normal temperature and high pressure under the same leakage condition.
{"title":"Numerical Simulation of Leakage and Diffusion of Liquid Ammonia Tank","authors":"B. Pang, Chen Liang, Lan Ma, Bei Luo","doi":"10.1109/IMCCC.2014.52","DOIUrl":"https://doi.org/10.1109/IMCCC.2014.52","url":null,"abstract":"The model for the leakage and diffusion of liquid ammonia tank established using the species transport and reaction module of Fluent in order to investigate the leakage of liquid ammonia due to storage tank failure. The corresponding influencing laws were obtained by changing the height of leakage source and the size of leakage aperture in the simulation. The potential hazard of liquid ammonia reserved at temperature and high pressure or low temperature and low pressure condition was obtained by comparison of simulation results. The results show that the high concentration of gas diffusion on the leeward side will increase with decreasing height of leakage source, the leakage rate of Ammonia tank and the concentration of gas diffusion on the same location increase as the size of leakage aperture increase, the distance and hazards of gas diffusion during the same time will increase with increasing when using storage mode of normal temperature and high pressure under the same leakage condition.","PeriodicalId":152074,"journal":{"name":"2014 Fourth International Conference on Instrumentation and Measurement, Computer, Communication and Control","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123159516","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}
This paper is concerned with the problem of designing robust H-infinity model predictive control of a class of time-delay discrete-time singular piecewise-affine systems with input saturation and state constraints. Based on a singular piecewise Lyapunov-Krasovskii function combined with S-procedure and some matrix inequality convexifying techniques, the H-infinity stabilization condition is established and the closed-loop system is investigated. And meanwhile, the model predictive controller is well estimated and designed that will move the PWA system with time delay from the current operating point to the desired one. Under energy bounded disturbance, the input saturation disturbance tolerance condition is proposed, then, the constrained state of the time-delay singular piecewise-affine systems is solved by a family of LMIs parameterized by one or two scalar variables. Numerical examples are given to illustrate the effectiveness of the proposed design methods.
{"title":"H-Infinity Model Predictive Control of Discrete-Time Constrained Singular Piecewise-Affine Systems with Time Delay","authors":"Zhenhua Zhou, Mao Wang, Tiantian Liang","doi":"10.1109/IMCCC.2014.100","DOIUrl":"https://doi.org/10.1109/IMCCC.2014.100","url":null,"abstract":"This paper is concerned with the problem of designing robust H-infinity model predictive control of a class of time-delay discrete-time singular piecewise-affine systems with input saturation and state constraints. Based on a singular piecewise Lyapunov-Krasovskii function combined with S-procedure and some matrix inequality convexifying techniques, the H-infinity stabilization condition is established and the closed-loop system is investigated. And meanwhile, the model predictive controller is well estimated and designed that will move the PWA system with time delay from the current operating point to the desired one. Under energy bounded disturbance, the input saturation disturbance tolerance condition is proposed, then, the constrained state of the time-delay singular piecewise-affine systems is solved by a family of LMIs parameterized by one or two scalar variables. Numerical examples are given to illustrate the effectiveness of the proposed design methods.","PeriodicalId":152074,"journal":{"name":"2014 Fourth International Conference on Instrumentation and Measurement, Computer, Communication and Control","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134534578","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}
Aiming at the background subtraction method is influenced liable to ray transformation, a new method of moving target recognition under static background is advanced. Background subtraction has been used for moving target detection in the paper, and the background selection updating method is approved. The background is updated by real-time updating and replacement mode so that the adaptability of background subtraction for environment is improved. And the edge detection for extracting the target contour is used convenient for detecting the shape of moving target and location, and then moving target recognition is realized. Experiment results show that the method in this paper can complete moving target recognition fast and exact.
{"title":"Moving Target Recognition under Static Background","authors":"Cao Li-jing, Tang Ke, Feng Zhonglin","doi":"10.1109/IMCCC.2014.32","DOIUrl":"https://doi.org/10.1109/IMCCC.2014.32","url":null,"abstract":"Aiming at the background subtraction method is influenced liable to ray transformation, a new method of moving target recognition under static background is advanced. Background subtraction has been used for moving target detection in the paper, and the background selection updating method is approved. The background is updated by real-time updating and replacement mode so that the adaptability of background subtraction for environment is improved. And the edge detection for extracting the target contour is used convenient for detecting the shape of moving target and location, and then moving target recognition is realized. Experiment results show that the method in this paper can complete moving target recognition fast and exact.","PeriodicalId":152074,"journal":{"name":"2014 Fourth International Conference on Instrumentation and Measurement, Computer, Communication and Control","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129086738","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}
Through thinking deeply on the algorithm of standard median filter, the algorithm is improved in order to make it faster. A fast filtering algorithm is proposed with the help of the relevance between filtering windows. The improved algorithm takes the indexes of the array storing the data of an image as media cleverly and takes the method combining the one-time total ordering with insertion sorting to reduce the time of comparison and movement greatly. The result of actual test indicates that using the improved median filter algorithm, the processing speed is promoted much on the premise of holding the effect of removing noise.
{"title":"Realization of Fast Median Filter Algorithm Based on the Relevance between Windows","authors":"Xudong Yang, Yapeng Yan","doi":"10.1109/IMCCC.2014.34","DOIUrl":"https://doi.org/10.1109/IMCCC.2014.34","url":null,"abstract":"Through thinking deeply on the algorithm of standard median filter, the algorithm is improved in order to make it faster. A fast filtering algorithm is proposed with the help of the relevance between filtering windows. The improved algorithm takes the indexes of the array storing the data of an image as media cleverly and takes the method combining the one-time total ordering with insertion sorting to reduce the time of comparison and movement greatly. The result of actual test indicates that using the improved median filter algorithm, the processing speed is promoted much on the premise of holding the effect of removing noise.","PeriodicalId":152074,"journal":{"name":"2014 Fourth International Conference on Instrumentation and Measurement, Computer, Communication and Control","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132214846","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}
In the process of aircraft development, we need to verify the Electrical Management System (UMS) on condition monitoring and control functions of each subsystem digitization, as well as the system management automation. For the subsystem power subsystem requires UMS achieve its AC and DC power supply subsystem bus bar, ground power, battery, rectifier unit and emergency DC generators and other equipment for condition monitoring and fault alarms. In the case of the power supply subsystem actual hardware is not installed, we need to develop a power supply system simulation exciter to completely simulate AC power subsystem, DC power supply subsystem, emergency DC power system, the function of the battery system, AC/DC power distribution system and the interface with UMS, this simulation can real-time monitor the power supply network state, to be able to implant failure information, can record and playback the working state of the power supply system, it is verify UMS for the control of the power supply subsystem, monitoring function. In this paper, the structure and function of the hardware and software are detailed described, with a corresponding software test, as well as verifying the software for each board hardware control and data acquisition functions, and finally introduces the development of the main problems encountered in the process of the system and the key technology. Actual results had shown that the system can effectively monitor and control electrical and mechanical verification management system.
{"title":"Design of Aircraft Power Subsystem Simulation Exciter","authors":"T. Feng, Li Dong-liang, Feng Zhi-gang, Zhang Tong","doi":"10.1109/IMCCC.2014.127","DOIUrl":"https://doi.org/10.1109/IMCCC.2014.127","url":null,"abstract":"In the process of aircraft development, we need to verify the Electrical Management System (UMS) on condition monitoring and control functions of each subsystem digitization, as well as the system management automation. For the subsystem power subsystem requires UMS achieve its AC and DC power supply subsystem bus bar, ground power, battery, rectifier unit and emergency DC generators and other equipment for condition monitoring and fault alarms. In the case of the power supply subsystem actual hardware is not installed, we need to develop a power supply system simulation exciter to completely simulate AC power subsystem, DC power supply subsystem, emergency DC power system, the function of the battery system, AC/DC power distribution system and the interface with UMS, this simulation can real-time monitor the power supply network state, to be able to implant failure information, can record and playback the working state of the power supply system, it is verify UMS for the control of the power supply subsystem, monitoring function. In this paper, the structure and function of the hardware and software are detailed described, with a corresponding software test, as well as verifying the software for each board hardware control and data acquisition functions, and finally introduces the development of the main problems encountered in the process of the system and the key technology. Actual results had shown that the system can effectively monitor and control electrical and mechanical verification management system.","PeriodicalId":152074,"journal":{"name":"2014 Fourth International Conference on Instrumentation and Measurement, Computer, Communication and Control","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114186247","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}
Zhigang Shang, Xiaochuan Ma, Tieli Li, Jincheng Lin
Inertial navigation technology is usually selected as the primary navigation method of Autonomous Underwater Vehicles (AUVs). The localization error can gradually increase over time in the absence of other navigation correction information. Moving Short Base-lines (MSBL) mounted in the bottom of mother ship can be fused in the AUVs' integrated navigation system, which can effectively slow down or inhibit the growth of the positioning error. However, different number of baselines and different geometric configuration can cause changes in navigation accuracy. In this paper, the rank and the determinant of the Fisher Information Matrix (FIM) are analysed to obtain the impact of the number of baselines and geometric configuration on the underwater AUVs positioning observability. Then, we get the principles of optimal design of the number of baselines and geometric configuration. Under the conditions meeting the minimum number of baselines, we simulate and compare AUVs' localization errors of two typical geometric configuration. Simulation results show that the design satisfying the principles of optimal design based on FIM can effectively inhibit the growth of the positioning error.
{"title":"Optimal Design of Moving Short Base-Lines Based on Fisher Information Matrix","authors":"Zhigang Shang, Xiaochuan Ma, Tieli Li, Jincheng Lin","doi":"10.1109/IMCCC.2014.12","DOIUrl":"https://doi.org/10.1109/IMCCC.2014.12","url":null,"abstract":"Inertial navigation technology is usually selected as the primary navigation method of Autonomous Underwater Vehicles (AUVs). The localization error can gradually increase over time in the absence of other navigation correction information. Moving Short Base-lines (MSBL) mounted in the bottom of mother ship can be fused in the AUVs' integrated navigation system, which can effectively slow down or inhibit the growth of the positioning error. However, different number of baselines and different geometric configuration can cause changes in navigation accuracy. In this paper, the rank and the determinant of the Fisher Information Matrix (FIM) are analysed to obtain the impact of the number of baselines and geometric configuration on the underwater AUVs positioning observability. Then, we get the principles of optimal design of the number of baselines and geometric configuration. Under the conditions meeting the minimum number of baselines, we simulate and compare AUVs' localization errors of two typical geometric configuration. Simulation results show that the design satisfying the principles of optimal design based on FIM can effectively inhibit the growth of the positioning error.","PeriodicalId":152074,"journal":{"name":"2014 Fourth International Conference on Instrumentation and Measurement, Computer, Communication and Control","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116067958","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}
This paper investigates the H∞ filtering problem for neutral stochastic systems with Markovian switching. By the Lyapunov stability theory, this paper designs an H∞ filter such that the filtering error system is mean-square asymptotically stable and satisfies a prescribed H∞ performance level. Finally, a simulation example is given to illustrate the effectiveness of the proposed filtering scheme.
{"title":"H[infinity] Filtering for Neutral Stochastic Systems with Markovian Switching","authors":"Bo Song, Zhengguang Wu","doi":"10.1109/IMCCC.2014.119","DOIUrl":"https://doi.org/10.1109/IMCCC.2014.119","url":null,"abstract":"This paper investigates the H<sub>∞</sub> filtering problem for neutral stochastic systems with Markovian switching. By the Lyapunov stability theory, this paper designs an H<sub>∞</sub> filter such that the filtering error system is mean-square asymptotically stable and satisfies a prescribed H<sub>∞</sub> performance level. Finally, a simulation example is given to illustrate the effectiveness of the proposed filtering scheme.","PeriodicalId":152074,"journal":{"name":"2014 Fourth International Conference on Instrumentation and Measurement, Computer, Communication and Control","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114711210","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}
Intelligent recognition of fighter's maneuver is critical in pilots' simulated training. In order to enhance intelligent recognition of the maneuver, a method of intelligent recognition of fighter's maneuver which is based on fuzzy control theory is proposed. The method uses smoothing, marking data node, removing small perturbations, feature extraction and so on. It solves problems such as inaccurate recognition and delayed identifying of the maneuvers.
{"title":"Intelligent Recognition of Fighter's Maneuver Based on Fuzzy Control Algorithm","authors":"Feng Tian, Zhang Tao, Guanglei Meng, Fengqin Sun","doi":"10.1109/IMCCC.2014.125","DOIUrl":"https://doi.org/10.1109/IMCCC.2014.125","url":null,"abstract":"Intelligent recognition of fighter's maneuver is critical in pilots' simulated training. In order to enhance intelligent recognition of the maneuver, a method of intelligent recognition of fighter's maneuver which is based on fuzzy control theory is proposed. The method uses smoothing, marking data node, removing small perturbations, feature extraction and so on. It solves problems such as inaccurate recognition and delayed identifying of the maneuvers.","PeriodicalId":152074,"journal":{"name":"2014 Fourth International Conference on Instrumentation and Measurement, Computer, Communication and Control","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115157354","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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