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1
Content available Simulation of foundation fieldbus Manchester coded 31.25 kbps H1 bus using MATLAB and Simulink
Abotaleb Mostafa, Mindykowski Janusz, Dudojć Bolesław, Maśnicki Romuald
Scientific Journal of Gdynia Maritime University
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2022
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nr 123
18--31
EN
The purpose of this article is to provide an understanding of possible techniques through which a H1 31.25 kbps Foundation Fieldbus Manchester coded signal can be modulated or demodulated. This understanding will be rendered through MATLAB and SIMULINK models, simulating both ideal and practical as well as noiseless and noisy conditions during the modulation/demodulation process. The simulation models will differentiate between the modulation methods adopted to generate ideal rectangular as well as practical trapezoidal waveforms for the Manchester coded signal. The analysis of the simulation results will describe the mechanisms through which distortion induced by additive white Gaussian noise can be eliminated during the demodulation process either by using recursive filters, such as a Kalman filter, or by calculating wave energy levels in specific time intervals.
2
Content available Application of a fuzzy controller in the process of automated polyethylene film thickness control
Jardzioch Andrzej, Marczak Wioletta
Applied Computer Science
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2021
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Vol. 17, no 3
31--46
EN
The present article aims to describe the design of a fuzzy controller used for automated control of the thickness of the extruded polyethylene film effected by the adjustment of the actuator in the cooling ring. In order to determine whether the designed controller operates properly, a model extruder was created and a simulation study was carried out. The Simulink programming environment integrated with Matlab was used for the development of the fuzzy controller and the simulation. The conducted simulation study demonstrated that the implementation of the designed controller would enable the adjustment of thickness on the perimeter of the film tube and quick reaction to possible departure in the assumed film thickness in mass production.
3
Content available Modeling of vibrating angular. Motion sensor in Matlab/SIMULINK
Nazdrowicz Jacek
International Journal of Microelectronics and Computer Science
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2018
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Vol. 9, nr 1
27--32
EN
This paper presents different models and results of simulations of MEMS vibrating gyroscope in Matlab/SIMULINK environment. Each model is created with different approach, using different blocks and different physics. Therefore author presents his proposal of mathematical, electrical equivalent and physical models. Results obtained from these models can give some hints regarding design and dimensions of some crucial parts of MEMS gyroscope. Here, decoupled vibrating sensor is considered, which minimize drive and sense motion mutual influence.
4
Content available Modeling and simulations of MEMS gyroscope with MATLAB/SIMULINK package
Nazdrowicz J.
International Journal of Microelectronics and Computer Science
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2017
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Vol. 8, nr 1
21--28
EN
This paper presents developed mathematical model of MEMS gyroscope created in Matlab/SIMULINK environment. The model can be very useful for calculating MEMS gyroscope geometrical parameters. These parameters play very significant role, because they have huge and direct impact on device response, performance and further possibilities of application. Results of simulations are presented in this article separately for drive and sense direction. In addition there are also results in frequency domain presented. With all these results we obtain quick overview of behavior this kind of MEMS device and response characteristics.
5
Content available MEMS accelerometer simulations in Matlab/SIMULINK and COMSOL Multiphysics
Nazdrowicz J.
International Journal of Microelectronics and Computer Science
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2017
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Vol. 8, nr 4
161--167
EN
In this paper modelling and simulation of MEMS accelerometers in Matlab/SIMULINK environment are presented. Results of simulations of three different approaches: mathematical, electrical equivalent and physical models are compared with FEM accelerometer model created in COMSOL software. Results of simulations are analyzed for displacement response for two of the most popular spring geometries - folded and straight. Author takes into consideration crucial aspects of damping coefficients influence on accelerometer performance.
6
Content available Modeling of photovoltaic modules in Simulink and Simscape packages of Matlab software
Sarniak M.
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
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2017
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Vol. 6, No 1
133--138
EN
The paper presents the possibilities of modeling the functioning of photovoltaic modules in MATLAB engineering software packages. In SIMULINK package one implemented a single-mode mathematical model of the photovoltaic module for determining current-voltage characteristics. The model was verified for manufacturer-supplied data and actual measurement results made with the I-V 400 meter. The new capabilities for physical modeling of photovoltaic modules are also available in the SIMSCAPE package. Simulation results obtained from the SIMSCAPE model were also compared with the results of selected measurements under the specified radiation and temperature conditions.
7
Content available remote Improved Data Preprocessing Algorithm for Time-Domain Induced Polarization Method with Digital Notch Filter
Ge S.-C., Deng M., Chen K., Li B., Li Y.
Acta Geophysica
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2016
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Vol. 64, no. 6
2264--2288
EN
Time-domain induced polarization (TDIP) measurement is seriously affected by power line interference and other field noise. Moreover, existing TDIP instruments generally output only the apparent chargeability, without providing complete secondary field information. To increase the robustness of TDIP method against interference and obtain more detailed secondary field information, an improved dataprocessing algorithm is proposed here. This method includes an efficient digital notch filter which can effectively eliminate all the main components of the power line interference. Hardware model of this filter was constructed and Vhsic Hardware Description Language code for it was generated using Digital Signal Processor Builder. In addition, a time-location method was proposed to extract secondary field information in case of unexpected data loss or failure of the synchronous technologies. Finally, the validity and accuracy of the method and the notch filter were verified by using the Cole-Cole model implemented by SIMULINK software. Moreover, indoor and field tests confirmed the application effect of the algorithm in the fieldwork.
8
Content available remote Badania teoretyczne i konstrukcja łożyskowania gazowego wrzeciona szlifierskiego
Oryński F., Kawczyński S.
Mechanik
|
2015
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R. 88, nr 8-9CD1
244--249
PL
W artykule zaprezentowano nową konstrukcję łożyska gazostatycznego. Łożysko powstało na podstawie analizy istniejących konstrukcji, jednak ma prostszą budowę. W drugiej części artykułu zaprezentowano metodę obliczeń i wyniki analizy matematycznej łożyska.
EN
The article presents a new gasostatic bearing design. Bearing was established on the basis of existing structures, but has a simpler design. In the second part of the article the calculation method and the results of mathematical analysis have been presented.
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