A problem of analysis of the input impedance of a converter traction vehicle is presented in the paper. The value of input impedance of a traction vehicle has significant influence of compatibility between track circu...
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A problem of analysis of the input impedance of a converter traction vehicle is presented in the paper. The value of input impedance of a traction vehicle has significant influence of compatibility between track circuits and traction vehicles. The model of chopper controlled DC series motor vehicle was implemented as a simulation model including all significant parameters of the whole system: substation-catenary-input filter-chopper. Exemplary results of analysis of the specific locomotive EM10 are included. The results both of analytical and simulation approach for low frequency Input impedance computations were compared.
This paper presents an intelligent radio wave propagation prediction model by using the 2-dimension aerial image which is taken from the actual area. An suburban area is used as examples. The prediction procedure is d...
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ISBN:
(纸本)1424410495
This paper presents an intelligent radio wave propagation prediction model by using the 2-dimension aerial image which is taken from the actual area. An suburban area is used as examples. The prediction procedure is done in three steps. First, the image segmentation is employed to divide the area image into subgroups by using Maximum Likelihood algorithm. The second step uses the subgroup images from step 1 to determine the parameters for the fuzzy model that we use to classify the propagation areas. The final step is to plot the path loss contour on the image so the cellular cell site can be chosen. The research results show that the proposed segmentation provides an accuracy of 80-90% compared with the actual area. Therefore, cell site selection can be designed on the 2-dimension aerial map with the error less than 8 dB.
In this paper a hybrid Token-CDMA based medium access control (MAC) protocol is considered. The MAC scheme is analytically modeled as a multiserver multiqueue (MSMQ) system in the case of a gated service discipline. W...
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The aim of this paper consists in using one of the emergent techniques which proves its capability of improving performances of several systems, called "neuro-fuzzy", in order to reduce the chattering phenom...
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This paper discussed a new mobile robot path planning algorithm. It analyzed the traditional path planning algorithm that employs Artificial Potential Field and Fuzzy Logic, and then develop a new method combing Artif...
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This paper discussed a new mobile robot path planning algorithm. It analyzed the traditional path planning algorithm that employs Artificial Potential Field and Fuzzy Logic, and then develop a new method combing Artificial Potential Field, Neural Network and Fuzzy Logic, which realized real-time obstacle recognition and smooth motion in dynamic environment. This algorithm improves the traditional Artificial Potential Field performance, while reducing its drawbacks' influence effectively. Experiment and simulation shows this method can make the robot avoid obstacles effectively and avoid being trapped in "dead area".
This paper considers the dual-mode MPC with linear quadratic performance index in application to robust output tracking of linear constrained discrete time invariant system affected by additive bounded disturbances. T...
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An efficient plant control under state and output constraints under a wide range of operating conditions is not possible by one controller. Hence, the concept of multiple controllers being switched as required by oper...
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The paper proposes an approach to designing the hybrid estimation algorithm/module (HEA) with moving measurements window for Wastewater Treatment Plant (WWTP) Robust Model Predictive Control (RMPC) purposes at medium ...
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In this paper a new energy method for determination of flicker source in power system is proposed This method is based on the energy of flicker signal; therefore, an expression for flicker energy signals is defined, w...
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In this paper a new energy method for determination of flicker source in power system is proposed This method is based on the energy of flicker signal; therefore, an expression for flicker energy signals is defined, which can be successfully utilized for detection of the flicker source. The main advantage of this method is its simplicity which can be implemented in time domain and no transformation to frequency domain is required. There are good agreements between simulation and test results.
作者：
L.J. NordierS. SinhaDepartment of Electrical
Electronic and Computer Engineering University of Pretoria Pretoria South Africa Department of Electrical
Electronic and Computer Engineering School of Engineering Faculty of Engineering Built Environment & Information Technology University of Pretoria Pretoria South Africa
For the registration process at a conference to be successful, a delegate's information needs to be verified quickly and accurately. In this paper, a system using external radio frequency identification devices (R...
For the registration process at a conference to be successful, a delegate's information needs to be verified quickly and accurately. In this paper, a system using external radio frequency identification devices (RFID) to bridge the gap between digital information and user requirements at a conference, is described. The system presented in this paper is divided in two subsystems, a registration subsystem and a presentation subsystem. These subsystems are written in C++ and use a connection module, to connect to an external MySQL database, written in C.
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