Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

Wyszukujesz frazę "MEMS" wg kryterium: Temat


Tytuł:
1-D equivalent circuit for RF MEMS capacitive switch
Autorzy:
Kula, S.
Powiązania:
https://bibliotekanauki.pl/articles/377903.pdf
Data publikacji:
2014
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
RF MEMS switch
equivalent circuits for MEMS
multiphysics modeling
Opis:
In this paper the equivalent circuit for an accurate model of the RF (Radio Frequency) MEMS (Micro Electro-Mechanical Systems) capacitive switch is presented. The capacitive switch consists of a thin metal membrane, which name is bridge suspended over central conductor and connected at both ends to the ground conductor of CPW (coplanar waveguide). The equivalent circuit was created based on multi-physic modelling, elements analogues, and electrical equivalences. Mechanical and electrical forces are included in the equivalent circuit as current sources. The usefulness and effectiveness of the model was verified through results comparison with the commercial APLAC software and mathematical modelling in Matlab software. The novelty of the paper is the equivalent circuit, which is useful to simulate linear and non-linear cases of the RF MEMS capacitive switch and also the novelty is an implementation of the equivalent circuit in LTSpice, which is a freeware circuits simulator.
Źródło:
Poznan University of Technology Academic Journals. Electrical Engineering; 2014, 80; 175-181
1897-0737
Pojawia się w:
Poznan University of Technology Academic Journals. Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
MEMS technology evaluation for submerged vehicle navigation
Autorzy:
Demkowicz, J.
Powiązania:
https://bibliotekanauki.pl/articles/331778.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Akustyczne
Tematy:
MEMS
IMU
INS
Opis:
The article undertakes analysis of some vital aspects of inertial navigation using MEMS. Although MEMS inertial sensors offer affordable, scaled units, and though their inherent measurement noise can be relatively easily mitigated, there are still parameters due to which they are not currently capable of meeting all requirements for accurate inertial navigation. The article presents a few aspects of MEMS gyro errors, and their estimation process in the context of INS processing flow. These errors have a serious impact on overall inertial system performance. The results of undertaken researches in that area, and pointing out the main difficulties behind the INS when using a few top MEMS technologies, were presented as well. The paper clearly states, that current MEMS technologies, including sophisticated software, does not fulfil submerged inertial navigation whilst operating in dynamic conditions, due to linear acceleration, affecting gyro performance.
Źródło:
Hydroacoustics; 2017, 20; 35-40
1642-1817
Pojawia się w:
Hydroacoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Low-range tilt sensing with mems accelerometers
Autorzy:
Łuczak, S.
Kołodziej, D.
Powiązania:
https://bibliotekanauki.pl/articles/385200.pdf
Data publikacji:
2009
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
MEMS
accelerometer
tilt
accuracy
Opis:
Ways of adjusting MEMS accelerometers for tilt measurements over a small angular range of few degrees arc or less are considered with regard to achieving a possibly high accuracy. The paper describes some additional mechanical structures applied to overcome the problem of incompatibility between the large measuring range of MEMS accelerometers and the expected small angular measuring range.
Źródło:
Journal of Automation Mobile Robotics and Intelligent Systems; 2009, 3, 4; 93-95
1897-8649
2080-2145
Pojawia się w:
Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
MEMS technology quality requirements as applied to multibeam echosounder
Autorzy:
Demkowicz, J.
Bikonis, K.
Powiązania:
https://bibliotekanauki.pl/articles/331722.pdf
Data publikacji:
2016
Wydawca:
Polskie Towarzystwo Akustyczne
Tematy:
MEMS
IMU
Multibeam Sonar
Opis:
Small, lightweight, power-efficient, and low-cost microelectromechanical system (MEMS) inertial sensors and microcontrollers, available in the market today, help reduce the instability of Multibeam Sonars. Current MEMS inertial measurement units (IMUs) come in many shapes, sizes, and costs — depending on the application and performance required. Although MEMS inertial sensors offer affordable, appropriately scaled units, they are not currently capable of meeting all requirements for accurate and precise attitudes, due to their inherent measurement noise. The article presents the comparison of different MEMS technologies, and their parameters regarding to the main application; namely, Multibeam Echo Sounders (MBES). The MEMS parameters’ quality are crucial for further MBES record- processing, the article presents the results of undertaken researches in that area, and the results are relatively positive for low-cost MEMS.
Źródło:
Hydroacoustics; 2016, 19; 75-82
1642-1817
Pojawia się w:
Hydroacoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimization of the fastening system of the truck using MEMS accelerometers
Autorzy:
Vlkovský, Martin
Malíšek, Jiří
Powiązania:
https://bibliotekanauki.pl/articles/2173470.pdf
Data publikacji:
2022
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
cargo securing
transport experiment
MEMS accelerometer
zabezpieczenie ładunku
eksperyment transportowy
przyspieszeniomierz MEMS
Opis:
This paper concerns the possibility of MEMS accelerometers employment in road transportation assessment. It makes use of statistical analysis tools and calculation of securing forces for the sake of road safety enhancement. The transport experiment was carried out and the statistical analysis shows a possible solution to the assessment of shocks during transportation, that in general adversely affect the cargo being transported (cargo securing), the vehicle, the driver, etc. From the results, it follows that even in the case of a high quality road (highway), the values of the shocks at higher speeds considerably exceed the expected magnitudes as defined in the respective standards. The assessment of truck transportation with up-to-date MEMS accelerometers is simple and relatively inexpensive and may represent a considerable contribution to road safety, including associated financial benefits.
Źródło:
Zeszyty Naukowe. Transport / Politechnika Śląska; 2022, 114; 169--178
0209-3324
2450-1549
Pojawia się w:
Zeszyty Naukowe. Transport / Politechnika Śląska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A static calibration of mems 3-axis accelerometer using a genetic algorithm
Autorzy:
Marinov, Marin
Petrov, Zhivo
Powiązania:
https://bibliotekanauki.pl/articles/198726.pdf
Data publikacji:
2019
Wydawca:
Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Tematy:
MEMS accelerometers
calibration
bias
genetic algorithm
akcelerometr MEMS
kalibracja
obciążenie
algorytm genetyczny
Opis:
In this paper, a procedure for MEMS accelerometer static calibration using a genetic algorithm, considering non-orthogonality was presented. The results of simulations and real accelerometer calibration are obtained showing high accuracy of parameters estimation.
Źródło:
Zeszyty Naukowe. Transport / Politechnika Śląska; 2019, 105; 157-168
0209-3324
2450-1549
Pojawia się w:
Zeszyty Naukowe. Transport / Politechnika Śląska
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of low-cost magnetic field and acceleration sensors in diagnostics of large-size structures
Zastosowanie niskobudżetowych czujników pola magnetycznego i przyspieszeń w diagnostyce konstrukcji wielkogabarytowych
Autorzy:
Szulim, P.
Mączak, J.
Rokicki, K.
Lubikowski, K.
Powiązania:
https://bibliotekanauki.pl/articles/327370.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
diagnosis
magnetic sensors
MEMS sensors
diagnostic systems
diagnostyka
czujnik magnetyczny
czujnik MEMS
Opis:
The paper presents the possibilities of using low-cost magnetic and acceleration sensors in diagnostic systems of large-scale structures made of ferromagnetic materials. It covers typical problems associated with their use as well as the review of commercially available low-cost solutions. A specially designed magnetic sensor equipped with a CAN interface, which allows for connecting a number of transmitters into a measuring network, were tested during the experiment.
W pracy przedstawiono możliwość wykorzystania niskobudżetowych czujników pola magnetycznego i przyspieszeń w systemach diagnostyki konstrukcji wielkogabarytowych wykonanych z materiałów ferromagnetycznych. Przedstawiono typowe problemy występujące podczas ich użycia oraz dokonano przeglądu dostępnych na rynku tanich rozwiązań. W przeprowadzonym eksperymencie przetestowano specjalnie opracowane przetworniki pala magnetycznego wyposażone w interfejs CAN pozwalający nasączenie sieć pomiarową.
Źródło:
Diagnostyka; 2013, 14, 4; 43-49
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Accelerometer - Based Measurements of Axial Tilt
Autorzy:
Łuczak, S.
Powiązania:
https://bibliotekanauki.pl/articles/384680.pdf
Data publikacji:
2012
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
MEMS
accelerometer
tilt
measurements
Opis:
The paper deals with a specific type of tilt measurements, where an axial tilt is to be determined. The measurements are realized by means of accelerometers - MEMS devices most preferably. Various mathematical relations between the axial tilt and the Cartesian components of the gravitational acceleration are presented. Each relation is described in detail, especially in the terms of the resultant uncertainty of the measurement, as well as the requirements regarding the employed accelerometers. Results of experimental studies realized by means of commercial MEMS accelerometers are presented and discussed, especially with regard to the measurement accuracy that has been evaluated for each mathematical relation. Scope of application of each relation is proposed.
Źródło:
Journal of Automation Mobile Robotics and Intelligent Systems; 2012, 6, 1; 39-41
1897-8649
2080-2145
Pojawia się w:
Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Angle measuring by MEMS accelerometers
Autorzy:
Zidek, K.
Dovica, M.
Liska, O.
Powiązania:
https://bibliotekanauki.pl/articles/384938.pdf
Data publikacji:
2012
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
MEMS
Kalman filter
control
Opis:
This article contains the description of MEMS accelerometers implementation to device which is able to measure danger tilt. We can find out actual tilt in two basic axes X and Y, from -90 centigrade to +90 centigrade. Z Axis can only detect fall of device or in vehicle system very fast downhill grade during movement. For testing of the solution we select small mobile robotic carriage. Hardware and software part of solution are described. Because data from sensor are in raw format from analog MEMS Accelerometer, we use free C# library with Kalman Filter implementation to remove signal error. We can acquire next information from sensor data for example movement's trajectory in X/Y axis (Cartesian system) and actual speed in all three axes. Fast alarm is provided by RGB led diode (red color is dangerous tilt.
Źródło:
Journal of Automation Mobile Robotics and Intelligent Systems; 2012, 6, 4; 3-6
1897-8649
2080-2145
Pojawia się w:
Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Digital Vibration Sensor Constructed with MEMS Technology
Autorzy:
Mazurek, G.
Powiązania:
https://bibliotekanauki.pl/articles/227320.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
accelerometer
vibration measurement
MEMS
Opis:
In this paper, a new digital sensor of acceleration is described. The sensor is based on MEMS device and is capable of measuring both static (gravity) and dynamic (vibration) accelerations. Its primary application is the measurement of vibrations in buildings and other constructions. The aim of this project was to design a low-cost, small-weight small-size acceleration sensor that can operate within simple sensor networks.
Źródło:
International Journal of Electronics and Telecommunications; 2012, 58, 2; 117-122
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modal analysis of vibratory microgyroscopes
Autorzy:
Nazdrowicz, Jacek
Maj, Cezary
Jankowski, Mariusz
Szermer, Michał
Stawiński, Adam
Napieralski, Andrzej
Powiązania:
https://bibliotekanauki.pl/chapters/32083882.pdf
Data publikacji:
2021
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
resonator
accelerometer
MEMS gyroscopes
Opis:
The aim of this paper is to bring up modal analysis of MEMS gyroscope operation with COMSOL and Matlab/SIMULINK software. Two different geometries are assumed and simulation results are presented. The other objective of the paper is to present modal analysis results by taking into consideration spring constants and variation in the damping coefficients as an effect of temperature variation.
Źródło:
Methods and tools in CAD – selected issues; 29-38
9788366391871
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Lateral Force Calibration Method Used for Calibration of Atomic Force Microscope
Autorzy:
Ekwińska, M.
Rymuza, Z.
Powiązania:
https://bibliotekanauki.pl/articles/308165.pdf
Data publikacji:
2009
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
AFM
calibration structure
cantilever
MEMS
Opis:
Modern heterogeneous micro- and nanostructures usually integrate modules fabricated using various materials and technologies. Moreover, it has to be emphasized that the macro and micro nanoscale material parameters are not the same. For this reason it has become crucial to identify the nanomechanical properties of the materials commonly used in micro- and nanostructure technology. One of such tests is a nanowear test performed using the atomic force microscope (AFM). However, to obtain quantitative measurement results a precision calibration step is necessary. In this paper a novel approach to calibration of lateral force acting on the tip of an AFM cantilever is discussed. Presented method is based on application of known lateral force directly on the tip using a special test structure. Such an approach allows for measurements of nanowear parameters (force, displacement) with the uncertainty better than š3%. The calibration structure designed specifically for this calibration method is also presented.
Źródło:
Journal of Telecommunications and Information Technology; 2009, 4; 83-87
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Automation of determining the range of values for MEMS resistive parameters
Autorzy:
Teslyuk, V.
Beregovska, K.
Pukach, A.
Ivantsiv, R. A.
Powiązania:
https://bibliotekanauki.pl/articles/410744.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Oddział w Lublinie PAN
Tematy:
MEMS
resistor
range determination
automation
Opis:
This paper is devoted to the development of automating methods of the ranges determination process of the resistance values measurements for the investigated MEMS resistive parameters (strain gauges, piezoresistors, thermistors, magnetoresistors and photoresistors, etc.), electric resistance of which is changing during functioning of MEMS, in order to improve the accuracy of investigated resistive parameter value determining and optimization of the entire measuring process in general. The developed method for automation of values range determination of the MEMS resistive parameters measurand is based on the designed models and algorithm of automation for the process of an exemplary resistor value determination. A measurand of the investigated MEMS resistive parameter is located in a neighborhood of this exemplary resistor value. The abovementioned method is also based on the developed model and algorithm for automation of the values range determination of the MEMS resistive parameters measurand.
Źródło:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes; 2016, 5, 2; 105-112
2084-5715
Pojawia się w:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fringing field modelling in MEMS capacitive comb-drive accelerometers
Autorzy:
Maj, Cezary
Nazdrowicz, Jacek
Stawiński, Adam
Powiązania:
https://bibliotekanauki.pl/chapters/32083885.pdf
Data publikacji:
2021
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
Accelerometers
MEMS devices
fringing field
Opis:
Modelling is a crucial step in designing MEMS devices. It is needed to estimate the device performance without its fabrication. Initially, simple calculations are needed to verify the possibility of device production with a given performance and to know the basic parameters necessary to achieve the desired goals. Further, optimization is commonly performed in order to improve the design. Both steps require simulation methods that are very fast and precise enough to reduce time to market. In many cases, classical, precise FEM simulations are not necessary and simple analytical models are used. MEMS devices like accelerometers, commonly uses elements of simple shapes that can be easily described with simple analytical formulas. However, analytical modelling is getting more complicated in case of capacitive transduction. Typically, these devices operate in the range of linear response but nothing can be done to avoid the influence of non-uniform electric field. Due to fringing field, a capacitance is often underestimated when using classical parallel plate formula. Therefore, there is a need for proper fringing field modelling. In this chapter, analytical modelling of fringing field on an example of MEMS accelerometer is presented. Specific structure type known as comb-drive consists of many small capacitors that enhance the impact of fringing field. Accelerometers in all axes are analyzed. Moreover, Z-axis accelerometer induces different electric field distribution due to the use of thinned fingers. Thus, analytical formulas are derived for various conditions. Finally, the model is compared with Coventor MEMS+ and fabricated strictures are measured in order to validate analytical approach.
Źródło:
Methods and tools in CAD – selected issues; 15-27
9788366391871
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Identification and evaluation of the characteristics of a selected commercial MEMS based vibration sensor for the machine condition monitoring
Autorzy:
Augustyn, Damian
Fidali, Marek
Powiązania:
https://bibliotekanauki.pl/articles/27313824.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
digital accelerometers
MEMS accelerometers
machine diagnostics
vibration measurements
CbM
akcelerometr
akcelerometr MEMS
diagnostyka maszyn
pomiar drgań
Opis:
With the emergence of the Industry 4.0 concept, machine vibration monitoring and diagnostics systems based on the so-called smart vibration sensors using MEMS accelerometers become very popular on the market. Many automation companies use specifically designed for CbM industrial vibration sensors based on electronic chips with enclosed MEMS accelerometers. However, in the commercial vibration sensors datasheets very often are not provided detailed metrological parameters like frequency response in the declared frequency band. The article presents the results of research concerned to identification of frequency response of an exemplary available on market digital accelerometer dedicated to machines condition monitoring. The determined characteristics indicate that the sensor can be used for basic diagnostics of machines in accordance to the series of vibration standards ISO 10816 and ISO 20816. On the basis of the determined characteristics, it can be concluded that there are some non-linarites of the frequency response functions at the boundaries of the declared measurement band. It shows that application of that sensor to precise measurements conducted during scientific research could be limited.
Źródło:
Diagnostyka; 2023, 24, 4; art. no. 2023404
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł

Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies