L. Hui, Z. Jianming, B. Tianshu, Wu Tao, Li Qunju, Sun Yu, Xue Ancheng, Liu Shanying
Because of the limitation of models in existing power system simulation softwares, only frequency fluctuations in a small range can be simulated in such environment. Relative bigger frequency fluctuations in islanding systems can not be simulated in them. To solve that problem, the OPC control logic of generating units was studied, and was simplified properly. The speed control model and protection model of generation units for islanding operation analysis were also developed in this paper. Furthermore, these models were set up in a user-defined environment of PSASP7.0 together, with other original components in the software, comprised a control simulation platform for islanding system operation. Its operational status was simulated and analyzed in a real system as an example, which proved that the reasonableness and practicality of the established simulation platform.
{"title":"A Simulation Platform for Modeling Islanding Power Systems and its Application in Designing Stability Control Schemes","authors":"L. Hui, Z. Jianming, B. Tianshu, Wu Tao, Li Qunju, Sun Yu, Xue Ancheng, Liu Shanying","doi":"10.1109/ICECE.2010.1200","DOIUrl":"https://doi.org/10.1109/ICECE.2010.1200","url":null,"abstract":"Because of the limitation of models in existing power system simulation softwares, only frequency fluctuations in a small range can be simulated in such environment. Relative bigger frequency fluctuations in islanding systems can not be simulated in them. To solve that problem, the OPC control logic of generating units was studied, and was simplified properly. The speed control model and protection model of generation units for islanding operation analysis were also developed in this paper. Furthermore, these models were set up in a user-defined environment of PSASP7.0 together, with other original components in the software, comprised a control simulation platform for islanding system operation. Its operational status was simulated and analyzed in a real system as an example, which proved that the reasonableness and practicality of the established simulation platform.","PeriodicalId":6419,"journal":{"name":"2010 International Conference on Electrical and Control Engineering","volume":"21 1","pages":"4962-4965"},"PeriodicalIF":0.0,"publicationDate":"2010-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82453114","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}
According to the real-time deviation between indoor dry-bulb temperature and set temperature, traditional PID control method of split air-conditioning is used to calculate the output power of split air-conditioning. Using the control method in a split air conditioning system, the rise time is often in contradiction with the overshoot of the control temperature when the temperature deviation is larger. On the other hand, when the temperature deviation is small, the traditional PID control method can maintain the stability of control temperature. When the temperature deviation is larger, an online prediction method of air-conditioning load is presented according to the trend change of dry-bulb temperature in this paper. In order to reduce the rise time, the output power of split air-conditioning is set to be the maximum. When the temperature deviation is changed to be small, the output power of split air-conditioning will be adjusted to be the former predicted load, and then the PID control method will be implemented to keep the stability of temperature. Experiments show that the method described can well solve the contradiction between the rise time and the overshoot, the control precision can reach to 0.2_.
{"title":"An Innovation PID Control Method of Split Air-conditioner Based on Online Prediction","authors":"S. Cao, Fang Liu, Wenbing Weng","doi":"10.1109/ICECE.2010.104","DOIUrl":"https://doi.org/10.1109/ICECE.2010.104","url":null,"abstract":"According to the real-time deviation between indoor dry-bulb temperature and set temperature, traditional PID control method of split air-conditioning is used to calculate the output power of split air-conditioning. Using the control method in a split air conditioning system, the rise time is often in contradiction with the overshoot of the control temperature when the temperature deviation is larger. On the other hand, when the temperature deviation is small, the traditional PID control method can maintain the stability of control temperature. When the temperature deviation is larger, an online prediction method of air-conditioning load is presented according to the trend change of dry-bulb temperature in this paper. In order to reduce the rise time, the output power of split air-conditioning is set to be the maximum. When the temperature deviation is changed to be small, the output power of split air-conditioning will be adjusted to be the former predicted load, and then the PID control method will be implemented to keep the stability of temperature. Experiments show that the method described can well solve the contradiction between the rise time and the overshoot, the control precision can reach to 0.2_.","PeriodicalId":6419,"journal":{"name":"2010 International Conference on Electrical and Control Engineering","volume":"9 1","pages":"400-403"},"PeriodicalIF":0.0,"publicationDate":"2010-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82583731","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}
Boost single-phase active power factor correction (APFC) is widely used to reduce input current harmonics. In this paper, input current distortion in the vicinity of input voltage zero crossing APFC in high line frequency is studied. Current loop model and input admittance model of APFC based on one cycle control (OCC) is presented. It is pointed out that its equivalent power stage of current loop is a 1st order system, and that its input admittance is the pure resistive around low frequency domain and the capacitive since 1 kHz around. However, it is does not matter in aero ac power system with 400Hz or 360~800Hz line frequency, and is suitable for applications as front converter in aero power supply system. The experimental results verify the theoretic analysis.
{"title":"Input Admittance Analysis Based on One Cycle Control in Boost Single-Phase PFC Converters","authors":"Zhang Xianjin, Gong Chenglong, W. Jianhua","doi":"10.1109/ICECE.2010.937","DOIUrl":"https://doi.org/10.1109/ICECE.2010.937","url":null,"abstract":"Boost single-phase active power factor correction (APFC) is widely used to reduce input current harmonics. In this paper, input current distortion in the vicinity of input voltage zero crossing APFC in high line frequency is studied. Current loop model and input admittance model of APFC based on one cycle control (OCC) is presented. It is pointed out that its equivalent power stage of current loop is a 1st order system, and that its input admittance is the pure resistive around low frequency domain and the capacitive since 1 kHz around. However, it is does not matter in aero ac power system with 400Hz or 360~800Hz line frequency, and is suitable for applications as front converter in aero power supply system. The experimental results verify the theoretic analysis.","PeriodicalId":6419,"journal":{"name":"2010 International Conference on Electrical and Control Engineering","volume":"17 1","pages":"3838-3841"},"PeriodicalIF":0.0,"publicationDate":"2010-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81313575","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}
Simulation analysis data proliferate in the process of product collaborative simulation, therefore, capability to access and manage the simulation analysis data is critical for the collaborative simulation. In order to achieving the integrality, coherence and traceability of simulation data, this paper proposed a management model of multi-dimensional simulation data of complicated product, which describes and manages various kinds of simulation data in different dimension includes the representation of assembling relation of complicated simulation objects in Layer Dimension of Simulation Object, the description and mapping of each discipline simulation data in Discipline Dimension and the construction of relationship among simulation process data generated during optimization in Version Dimension. Finally, we established a platform of multi-dimensional simulation data management, which validates the feasibility and effectiveness of this management model of multi-dimension simulation data.
{"title":"Research on Multi-dimensional Simulation Data Management Model for Complicated Product","authors":"Wei Wang, Rong Mo, Ye Tao Jin, Yan Zhang","doi":"10.1109/ICECE.2010.719","DOIUrl":"https://doi.org/10.1109/ICECE.2010.719","url":null,"abstract":"Simulation analysis data proliferate in the process of product collaborative simulation, therefore, capability to access and manage the simulation analysis data is critical for the collaborative simulation. In order to achieving the integrality, coherence and traceability of simulation data, this paper proposed a management model of multi-dimensional simulation data of complicated product, which describes and manages various kinds of simulation data in different dimension includes the representation of assembling relation of complicated simulation objects in Layer Dimension of Simulation Object, the description and mapping of each discipline simulation data in Discipline Dimension and the construction of relationship among simulation process data generated during optimization in Version Dimension. Finally, we established a platform of multi-dimensional simulation data management, which validates the feasibility and effectiveness of this management model of multi-dimension simulation data.","PeriodicalId":6419,"journal":{"name":"2010 International Conference on Electrical and Control Engineering","volume":"21 1","pages":"2948-2951"},"PeriodicalIF":0.0,"publicationDate":"2010-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81371849","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 system designs a high efficient, low ripple switching power supply. It uses single-ended DC-DC forward converter, and the output range is controlled by regulating the pulse width of the PWM controller UC3844. The control part is called double closed-loop control circuit, composed by voltage feedback loop and current feedback loop. It can stable the output voltage, reduce voltage regulation and load regulation. AVR single chip Mega128L is the core processor of the display part which part has the role of collecting the output voltage, using I2C bus interface keyboard, display the measurement of the voltage and the current, and it also designed to protect overcurrent which is used to enhance the reliability of the system.
{"title":"Design of Programmable Switching Power Supply","authors":"Chuan-dong Bai","doi":"10.1109/ICECE.2010.1464","DOIUrl":"https://doi.org/10.1109/ICECE.2010.1464","url":null,"abstract":"This system designs a high efficient, low ripple switching power supply. It uses single-ended DC-DC forward converter, and the output range is controlled by regulating the pulse width of the PWM controller UC3844. The control part is called double closed-loop control circuit, composed by voltage feedback loop and current feedback loop. It can stable the output voltage, reduce voltage regulation and load regulation. AVR single chip Mega128L is the core processor of the display part which part has the role of collecting the output voltage, using I2C bus interface keyboard, display the measurement of the voltage and the current, and it also designed to protect overcurrent which is used to enhance the reliability of the system.","PeriodicalId":6419,"journal":{"name":"2010 International Conference on Electrical and Control Engineering","volume":"30 1","pages":"5835-5838"},"PeriodicalIF":0.0,"publicationDate":"2010-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78677069","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 article built the simulation model between the catenary voltage and the traction motor based on the CRH2 high-speed EMUs, and aimed to analysis the impact on the operating speed of EMUs which is caused by the decreased catenary voltage.
{"title":"Analysis of Impact on the Operating Speed of EMUs Which is Caused by the Decreased Catenary Voltage","authors":"Gou Xiaogang, Liao Mao-liang","doi":"10.1109/ICECE.2010.110","DOIUrl":"https://doi.org/10.1109/ICECE.2010.110","url":null,"abstract":"This article built the simulation model between the catenary voltage and the traction motor based on the CRH2 high-speed EMUs, and aimed to analysis the impact on the operating speed of EMUs which is caused by the decreased catenary voltage.","PeriodicalId":6419,"journal":{"name":"2010 International Conference on Electrical and Control Engineering","volume":"7 1","pages":"426-429"},"PeriodicalIF":0.0,"publicationDate":"2010-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78889641","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}
Hu Xiaoli, Li Tao, Hu Bing, Cheng Qiang, Xiao Qiang, Huang Qiang
Based on AT89S52 MCU designed a blind people e-reader. Details are given in the e-reader hardware and software design. This blind e-reader can convert any Chinese or English document in the computer into corresponding Braille code available to the blind, tactile, can also enter from the keyboard and display, can achieve the recording and music player function, the system easy to operate, low-cost, greatly enhanced the ability of blind people access to information., may become widely used by the blind.
{"title":"Electronic Reader for the Blind Based on MCU","authors":"Hu Xiaoli, Li Tao, Hu Bing, Cheng Qiang, Xiao Qiang, Huang Qiang","doi":"10.1109/ICECE.2010.227","DOIUrl":"https://doi.org/10.1109/ICECE.2010.227","url":null,"abstract":"Based on AT89S52 MCU designed a blind people e-reader. Details are given in the e-reader hardware and software design. This blind e-reader can convert any Chinese or English document in the computer into corresponding Braille code available to the blind, tactile, can also enter from the keyboard and display, can achieve the recording and music player function, the system easy to operate, low-cost, greatly enhanced the ability of blind people access to information., may become widely used by the blind.","PeriodicalId":6419,"journal":{"name":"2010 International Conference on Electrical and Control Engineering","volume":"5 1","pages":"888-890"},"PeriodicalIF":0.0,"publicationDate":"2010-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78971074","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}
Data processing is one of the most important sectors in CAN bus system. The paper design a universal CAN Bus data processing system. Describing block diagram, building processing method library with flexible way, it also design Data Processing procedure. Using ID code and ID mask code, CAN frame reconstruction is realized, then the parameter in the frame can be processed according to the corresponding parameter table. Loading processing method library into memory firstly improve data processing speed. At last, formula analysis and calculation methods are introduced, which have extensive value for data processing.
{"title":"Design of CAN Bus Data Processing System","authors":"Zhiwei Du, Yi Huang","doi":"10.1109/ICECE.2010.1242","DOIUrl":"https://doi.org/10.1109/ICECE.2010.1242","url":null,"abstract":"Data processing is one of the most important sectors in CAN bus system. The paper design a universal CAN Bus data processing system. Describing block diagram, building processing method library with flexible way, it also design Data Processing procedure. Using ID code and ID mask code, CAN frame reconstruction is realized, then the parameter in the frame can be processed according to the corresponding parameter table. Loading processing method library into memory firstly improve data processing speed. At last, formula analysis and calculation methods are introduced, which have extensive value for data processing.","PeriodicalId":6419,"journal":{"name":"2010 International Conference on Electrical and Control Engineering","volume":"357 1","pages":"5127-5129"},"PeriodicalIF":0.0,"publicationDate":"2010-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76315343","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}
An attitude regulating control for a class of satellites is proposed. The control scheme is based on the orientation description of Rodrigues or Modified Rodrigues parameters. A method for initial value calculation of the Rodrigues/Modified Rodrigues parameters is given to transmit the stabilizing control into regulation. An attitude control for SAPPHIER satellite is studied. The proposed control scheme achieves effective performance as illustrated in the numerical example.
{"title":"Attitude Regulating Control for a Class of Satellites","authors":"Chang-Fei Tong, Zhi-Biao Zhan, Huai-zhong Li","doi":"10.1109/ICECE.2010.129","DOIUrl":"https://doi.org/10.1109/ICECE.2010.129","url":null,"abstract":"An attitude regulating control for a class of satellites is proposed. The control scheme is based on the orientation description of Rodrigues or Modified Rodrigues parameters. A method for initial value calculation of the Rodrigues/Modified Rodrigues parameters is given to transmit the stabilizing control into regulation. An attitude control for SAPPHIER satellite is studied. The proposed control scheme achieves effective performance as illustrated in the numerical example.","PeriodicalId":6419,"journal":{"name":"2010 International Conference on Electrical and Control Engineering","volume":"81 1","pages":"501-504"},"PeriodicalIF":0.0,"publicationDate":"2010-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76044126","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 order to solve software complexity crisis problem, policy-based method and agent-based system is combined to build autonomic computing system, where agent stands for autonomic element and policy stands for administrator's goal. Due to dynamic nature of administrator's goal, a mechanism must be provided to commit policy modification. This paper proposes an integrative framework where policy modification is considered. Firstly, we provide some postulates for policy modification; secondly, policy modification operators are proposed according to relevant postulates; finally, case study shows the achievement of policy modification in flexible agent.
{"title":"Policy Modification in Flexible Agent","authors":"Yanbin Peng, Chunming Wu","doi":"10.1109/ICECE.2010.366","DOIUrl":"https://doi.org/10.1109/ICECE.2010.366","url":null,"abstract":"In order to solve software complexity crisis problem, policy-based method and agent-based system is combined to build autonomic computing system, where agent stands for autonomic element and policy stands for administrator's goal. Due to dynamic nature of administrator's goal, a mechanism must be provided to commit policy modification. This paper proposes an integrative framework where policy modification is considered. Firstly, we provide some postulates for policy modification; secondly, policy modification operators are proposed according to relevant postulates; finally, case study shows the achievement of policy modification in flexible agent.","PeriodicalId":6419,"journal":{"name":"2010 International Conference on Electrical and Control Engineering","volume":"9 1","pages":"1486-1489"},"PeriodicalIF":0.0,"publicationDate":"2010-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87502181","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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