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    Wyświetlanie 1-15 z 15
    Tytuł:
    The method of mapping of acoustic field, emitted by sources of sound in the environment, with implementation of the MEMS IMU unit and laser devices
    Autorzy:
    Kompała, J.
    Motyka, Z.
    Szade, A.
    Świder, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/114389.pdf
    Data publikacji:
    2015
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    acoustic field
    inertial unit
    laser device
    Opis:
    During the course of the research, a methodology of measurement of sources of noise was developed, along with measurement models and measurement sets. The latter were equipped with microphones, acoustic pressure level meters, devices determining spatial orientation of the measurement (laser rangefinder, inertial measurement unit 3D IMU) and software processing the data, obtained including final spatial mapping of the acoustic field. The system has been successfully tried in large indoor areas.
    Źródło:
    Measurement Automation Monitoring; 2015, 61, 3; 68-71
    2450-2855
    Pojawia się w:
    Measurement Automation Monitoring
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Qualitative analysis of the Novatel SPAN-CPT GPS receiver accuracy with and without the inertial measurement unit (IMU)
    Porównawcza analiza dokładności odbiornika GPS Novatel SPAN-CPT z włączonym żyroskopem (IMU) i bez jego użycia
    Autorzy:
    Vicente, N.
    Rutkowski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/335044.pdf
    Data publikacji:
    2011
    Wydawca:
    Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Maszyn Rolniczych
    Tematy:
    GPS
    dokładność
    żyroskop
    analiza
    analysis
    inertial measurement unit
    Opis:
    The altitude measurements and the error information provided by the Novatel SPAN-CPT GPS receiver are reliable under good GPS signal reception, however, the adoption of this system in the machine for renovation of open water courses will be affected by the utilization or not of the Inertial Measurement Unit (IMU) during bad GPS signal conditions. Taking as reference the measurements performed under good GPS signal conditions, this paper compares the measurements obtained under bad GPS Signal conditions with and without IMU corrections.
    Dokładny pomiar wysokości przez odbiornik GPS SPAN-CPT jest zapewniony przy dobrym sygnale GPS. W złych warunkach terenowych dokładność może być zwiększona przez wykorzystanie dodatkowej korekty, pochodzącej od jednostki żyroskopowej (IMU). W artykule porównano wyniki pomiarów dokładności pozycjonowania z włączonym żyroskopem i bez jego użycia.
    Źródło:
    Journal of Research and Applications in Agricultural Engineering; 2011, 56, 4; 184-188
    1642-686X
    2719-423X
    Pojawia się w:
    Journal of Research and Applications in Agricultural Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Inertial sensors applications in underwater measurements
    Autorzy:
    Bikonis, K.
    Demkowicz, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/332294.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Akustyczne
    Tematy:
    inertial measurements unit (IMU)
    inertial navigation system (INS)
    underwater navigation system
    Opis:
    Over the past decades microelectromechanical systems (MEMS) researchers have demonstrated a number of microsensors for almost every possible sensing modality, including attitudes. Current MEMS inertial measurement units (IMU) come in many shapes, sizes, and costs — depending on the application, and performance required. MEMS sensors have proved and demonstrated performance exceeding those of their macroscale counterpart sensors. In the paper chosen IMU applications in underwater measurements are presented. First, for reduction of instability of the underwater sensor during measurements, like multibeam echosounder system (MBES), where the MEMS parameters’ quality are crucial for further MBES record-processing. Second, in underwater navigation systems, for determining the position of underwater vehicles, like Remotely Operated Vehicles (ROV) and, more recently, Autonomous Underwater Vehicle (AUV) or to improve other positioning methods.
    Źródło:
    Hydroacoustics; 2017, 20; 13-18
    1642-1817
    Pojawia się w:
    Hydroacoustics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A low-cost embedded inertial measurement system for the monitoring of human movement
    Autorzy:
    Łazoryszczak, M.
    Peryt, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/114182.pdf
    Data publikacji:
    2015
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    inertial measurement unit
    embedded systems
    human movement monitoring
    sensor networks
    Opis:
    The paper presents a part of a prototype system for the monitoring of selected vital functions of humans and some preliminary results obtained from the device using implemented algorithm. The system consists of such essential modules like a microcontroller board, an inertial measurement unit and additional sensors. The main task of the device is human movement monitoring and detecting selected anomalies, e.g. fall or fainting. At the first stage, the movement classification was considered. The main movement type are walking, running and selected variants of transitions between different phases like standing up or going downstairs. The determining of the movement is based on the intuitive algorithm using raw data from accelerometers complemented by sensors like barometer and heart rate monitor. The algorithm utilizes automated multiscale-based peak detection and wavelet transform energy calculations. Finally, some further work directions and development possibilities are discussed.
    Źródło:
    Measurement Automation Monitoring; 2015, 61, 12; 542-544
    2450-2855
    Pojawia się w:
    Measurement Automation Monitoring
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    System akwizycji skorygowanej siły uogólnionej kontaktu robota manipulacyjnego z otoczeniem
    The acquisition system of general force of contact between robotic manipulator and the environment
    Autorzy:
    Winiarski, T.
    Banachowicz, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/276509.pdf
    Data publikacji:
    2013
    Wydawca:
    Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
    Tematy:
    robot
    manipulator
    siła uogólniona
    jednostka inercyjna
    inertial measurement unit
    general force
    Opis:
    W artykule zaprezentowano system akwizycji skorygowanej siły uogólnionej kontaktu narzędzia manipulatora z otoczeniem oparty o nadgarstkowy czujnik sił i momentów sił oraz dodatkową jednostkę inercyjną. Opracowany system z jednej strony eliminuje w znacznym stopniu błędy związane z wpływem ciężaru narzędzia, siły grawitacji a nawet sił bezwładności, z drugiej przeznaczony jest do współpracy z tanimi i sprawdzonym manipulatorami przemysłowymi, czyniąc je platformami badawczymi robotyki usługowej.
    The article considers an acquisition system of general force measured between manipulator’s end-effector and the environment using six axis force transducer mounted in manipulator wrist and additional inertial measurement unit. The proposed solution significantly improves the initial force measurement by reducing the influence of tool weight, gravitational force and inertial force. It can be used to develop a cheap industrial robot to a service robot test platform.
    Źródło:
    Pomiary Automatyka Robotyka; 2013, 17, 2; 390-394
    1427-9126
    Pojawia się w:
    Pomiary Automatyka Robotyka
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    MEMS technology quality requirements as applied to multibeam echosounder
    Autorzy:
    Bikonis, K.
    Demkowicz, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/260431.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
    Tematy:
    Inertial Measurements Unit
    Multibeam Echo Sounder
    attitude and heading reference system
    motion reference unit
    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 and 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 quality of MEMS parameters is crucial for further MBES record-processing. The article presents the results of undertaken researches in that area, and these results are relatively positive for low-cost MEMS. The paper undertakes some vital aspect of using MEMS in the attitude and heading reference system (AHRS) context. The article presents a few aspects of MEMS gyro errors and their estimation process in the context of INS processing flow, as well as points out the main difficulties behind the INS when using a few top MEMS technologies.
    Źródło:
    Polish Maritime Research; 2018, 4; 59-64
    1233-2585
    Pojawia się w:
    Polish Maritime Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Estimation of Flight Path Deviations for SAR Radar Installed on UAV
    Autorzy:
    Łabowski, M.
    Kaniewski, P.
    Konatowski, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/221533.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    Unmanned Aerial Vehicle
    Synthetic Aperture Radar
    inertial measurement unit
    Global Navigation Satellite System
    Opis:
    The paper presents a method of calculation of position deviations from a theoretical, nominally rectilinear trajectory for a SAR imaging system installed on board of UAV. The UAV on-board system consists of a radar sensor, an antenna system, a SAR processor and a navigation system. The main task of the navigation part is to determine the vector of differences between the theoretical and the measured trajectories of UAV center of gravity. The paper includes chosen results of experiments obtained during ground and flight tests.
    Źródło:
    Metrology and Measurement Systems; 2016, 23, 3; 383-391
    0860-8229
    Pojawia się w:
    Metrology and Measurement Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A Study on the Errors in the Free-Gyro Positioning and Directional System
    Autorzy:
    Jeong, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/117640.pdf
    Data publikacji:
    2014
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    Position Accuracy
    Gyrocompass
    Free-Gyro Positioning
    Directional System
    Attitude Errors
    Inertial Measurement Unit (IMU)
    FDOP
    inertial navigation system (INS)
    Opis:
    This paper is to develop the position error equations including the attitude errors, the errors of nadir and ship’s heading, and the errors of ship’s position in the free-gyro positioning and directional system. In doing so, the determination of ship’s position by two free gyro vectors was discussed and the algorithmic design of the free-gyro positioning and directional system was introduced briefly. Next, the errors of transformation matrices of the gyro and body frames, i.e., attitude errors, were examined and the attitude equations were also derived. The perturbations of the errors of the nadir angle including ship’s heading were investigated in each stage from the sensor of rate of motion of the spin axis to the nadir angle obtained. Finally, the perturbation error equations of ship’s position used the nadir angles were derived in the form of a linear error model and the concept of FDOP was also suggested by using covariance of position error.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2014, 8, 2; 175-181
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Low-cost navigation and guidance systems for Unmanned Aerial Vehicles. Part 1: Vision-based and integrated sensors
    Autorzy:
    Sabatini, R.
    Bartel, C.
    Kaharkar, A.
    Shaid, T.
    Rodriguez, L.
    Zammit-Mangion, D.
    Jia, H.
    Powiązania:
    https://bibliotekanauki.pl/articles/320426.pdf
    Data publikacji:
    2012
    Wydawca:
    Polskie Forum Nawigacyjne
    Tematy:
    Vision-Based Navigation
    integrated navigation system
    MEMS Inertial Measurement Unit
    unmanned aerial vehicle
    Low-cost Navigation Sensors
    Opis:
    In this paper we present a new low-cost navigation system designed for small size Unmanned Aerial Vehicles (UAVs) based on Vision-Based Navigation (VBN) and other avionics sensors. The main objective of our research was to design a compact, light and relatively inexpensive system capable of providing the Required Navigation Performance (RNP) in all phases of flight of a small UAV, with a special focus on precision approach and landing, where Vision Based Navigation (VBN) techniques can be fully exploited in a multisensor integrated architecture. Various existing techniques for VBN were compared and the Appearance-Based Approach (ABA) was selected for implementation. Feature extraction and optical flow techniques were employed to estimate flight parameters such as roll angle, pitch angle, deviation from the runway and body rates. Additionally, we addressed the possible synergies between VBN, Global Navigation Satellite System (GNSS) and MEMS-IMU (Micro-Electromechanical System Inertial Measurement Unit) sensors, as well as the aiding from Aircraft Dynamics Models (ADMs). In particular, by employing these sensors/models, we aimed to compensate for the shortcomings of VBN and MEMS-IMU sensors in high-dynamics attitude determination tasks. An Extended Kalman Filter (EKF) was developed to fuse the information provided by the different sensors and to provide estimates of position, velocity and attitude of the UAV platform in real-time. Two different integrated navigation system architectures were implemented. The first used VBN at 20 Hz and GPS at 1 Hz to augment the MEMS-IMU running at 100 Hz. The second mode also included the ADM (computations performed at 100 Hz) to provide augmentation of the attitude channel. Simulation of these two modes was accomplished in a significant portion of the AEROSONDE UAV operational flight envelope and performing a variety of representative manoeuvres (i.e., straight climb, level turning, turning descent and climb, straight descent, etc.). Simulation of the first integrated navigation system architecture (VBN/IMU/GPS) showed that the integrated system can reach position, velocity and attitude accuracies compatible with CAT-II precision approach requirements. Simulation of the second system architecture (VBN/IMU/GPS/ADM) also showed promising results since the achieved attitude accuracy was higher using the ADM/VBS/IMU than using VBS/IMU only. However, due to rapid divergence of the ADM virtual sensor, there was a need for frequent re-initialisation of the ADM data module, which was strongly dependent on the UAV flight dynamics and the specific manoeuvring transitions performed.
    Źródło:
    Annual of Navigation; 2012, No. 19, part 2; 71-98
    1640-8632
    Pojawia się w:
    Annual of Navigation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Localization of the Wheeled Mobile Robot Based on Multi-Sensor Data Fusion
    Autorzy:
    Jaroszek, P.
    Trojnacki, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/384395.pdf
    Data publikacji:
    2015
    Wydawca:
    Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
    Tematy:
    wheeled mobile robot
    localization
    environment map
    laser scanner
    inertial measurement unit
    odometry
    data fusion
    Monte Carlo localization method
    Opis:
    The paper presents a method of localization of a mobile robot which relies on aggregation of data from several sensors. A review of the state of the art regarding methods of localization of ground mobile robots is presented. An overview of design of the four-wheeled mobile robot used for the research is given. The way of representation of robot environment in the form of maps is described. The localization algorithm which uses the Monte Carlo localization method is described. The simulation environment and results of simulation investigations are discussed. The measurement and control equipment of the robot is described and the obtained results of experimental investigations are presented. The obtained results of simulation and experimental investigations confirm the validity of the developed robot localization method. They are the foundation of further research, where additional sensors supporting the localization process could be used.
    Źródło:
    Journal of Automation Mobile Robotics and Intelligent Systems; 2015, 9, 3; 73-84
    1897-8649
    2080-2145
    Pojawia się w:
    Journal of Automation Mobile Robotics and Intelligent Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Efficiency of MEMS inertial sensors used in low-dynamics application
    Autorzy:
    Szumski, A.
    Eissfeller, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/117053.pdf
    Data publikacji:
    2017
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    Positioning, Navigation and Timing (PNT)
    Fiber Optic Gyroscopes (FOG)
    Microelectromechanical Systems (MEMS)
    gyrocompassing
    Inertial Measurement Unit (IMU)
    inertial systems
    Inertial Navigation Systems (INS)
    Allan standard deviation
    Opis:
    The analysis presents the performance of navigation application driven with MEMS and FOG inertial sensors. The inertial sensors were working under conditions simulating a potential robotic mission, which reduce accuracy of some of the navigation applications. Empirical results of the test confirm degradation of the navigation system performance in the presented demanding mission. Influence of the testing conditions and of the inertial sensor technology is presented and discussed in the paper.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2017, 11, 2; 221-226
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Quantification of motor abilities during the execution of judo techniques
    Autorzy:
    Frassinelli, Stefano
    Niccolai, Alessandro
    Zich, Riccardo E.
    Rosso, Valeria
    Gastaldi, Laura
    Powiązania:
    https://bibliotekanauki.pl/articles/949742.pdf
    Data publikacji:
    2019
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    IMU
    dżudo
    zdolności motoryczne
    sztuki walki
    inertial measurement unit (IMU)
    sport performance
    judo
    martial art
    motor abilities
    motor capabilities
    Źródło:
    Acta of Bioengineering and Biomechanics; 2019, 21, 3; 3-12
    1509-409X
    2450-6303
    Pojawia się w:
    Acta of Bioengineering and Biomechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The wavelet as the evaluation tool of vehicles’ seat suspension system
    Autorzy:
    Glowinski, Sebastian
    Blazejewski, Andrzej
    Powiązania:
    https://bibliotekanauki.pl/articles/2146589.pdf
    Data publikacji:
    2020
    Wydawca:
    Politechnika Poznańska. Instytut Mechaniki Stosowanej
    Tematy:
    inertial measurement unit
    frequency modulation
    active seat suspension
    multidimensional signal processing
    inercyjny układ pomiarowy
    modulacja częstotliwości
    aktywne zawieszenie siedziska
    wielowymiarowe przetwarzanie sygnałów
    Opis:
    In this paper, an innovative active seat suspension system for vehicles is presented. This seat suspension prototype is built with a shear guidance mechanism, an air spring, a hydraulic shock absorber and end-stop buffers. The acceleration particular signals are measured by using Inertial Measurement Units (IMUs) placed on the seat and the human head. As the excitation, the horizontal vibrations are applied. As an alternative to the classical Fourier approach, the Wavelet Transfer Function (WTF) is introduced to describe the effectiveness of particular seat suspension. In both of the system cases, the human head reaction is investigated by using the Matlab package.
    Źródło:
    Vibrations in Physical Systems; 2020, 31, 2; art. no. 2020206
    0860-6897
    Pojawia się w:
    Vibrations in Physical Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Data Integration from GPS and Inertial Navigation Systems for Pedestrians in Urban Area
    Autorzy:
    Bikonis, K.
    Demkowicz, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/115987.pdf
    Data publikacji:
    2013
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    Inertial Measurement Unit (IMU)
    Urban Area
    inertial navigation system (INS)
    Global Positioning System GPS
    extended Kalman filter (EKF)
    pedestrian trajectory
    Micro Electro Mechanical Systems (MEMS)
    Integration of Navigation
    Opis:
    The GPS system is widely used in navigation and the GPS receiver can offer long-term stable absolute positioning information. The overall system performance depends largely on the signal environments. The position obtained from GPS is often degraded due to obstruction and multipath effect caused by buildings, city infrastructure and vegetation, whereas, the current performance achieved by inertial navigation systems (INS) is still relatively poor due to the large inertial sensor errors. The complementary features of GPS and INS are the main reasons why integrated GPS/INS systems are becoming increasingly popular. GPS/INS systems offer a high data rate, high accuracy position and orientation that can work in all environments, particularly those where satellite availability is restricted. In the paper integration algorithm of GPS and INS systems data for pedestrians in urban area is presented. For data integration an Extended Kalman Filter (EKF) algorithm is proposed. Complementary characteristics of GPS and INS with EKF can overcome the problem of huge INS drifts, GPS outages, dense multipath effect and other individual problems associated with these sensors.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2013, 7, 3; 401-406
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of micro-electromechanical inertial measurement units for unmanned aerial vehicle applications
    Autorzy:
    Mammadov, Aftandil
    Powiązania:
    https://bibliotekanauki.pl/articles/2203076.pdf
    Data publikacji:
    2022
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    unmanned aerial vehicles
    inertial measurement unit
    gyroscope
    accelerometer
    micro electro-mechanical system
    roll
    pitch
    yaw
    acceleration
    bezzałogowe pojazdy powietrzne
    inercyjna jednostka pomiarowa
    żyroskop
    przyspieszeniomierz
    system mikro-elektromechaniczny
    rolka
    nachylenie
    przyśpieszenie
    Opis:
    Typically, an inertial navigation system (INS) is used to determine the position, speed, and orientation of an object moving relative to the earth's surface. The navigation information (position, speed and orientation) of an unmanned aerial vehicle (UAV) is needed to control its flight. Since the resistance of INS to interferences is very high, it is possible to ensure reliable flights in conditions of high-intensity noise. This article explores the principles of constructing inertial measurement units (IMU) that are part of the INS and indicates perspective directions for their development. Micro-electromechanical inertial measurement units were studied in this work, and functional and principal electrical circuits for connecting units of inertial measurements to the microcontroller were developed. The results of practical measurements of units without calibration and after calibration were obtained using the created laboratory device. Based on the obtained results, the necessity of sensor calibration was revealed, and accuracy was improved by performing calibration with the Kalman filter algorithm. The Kalman filter is the heart of the navigation system. In a low-cost system, IMU errors like bias, scale factor error and random walk noise dominate the INS error growth.
    Źródło:
    Zeszyty Naukowe. Transport / Politechnika Śląska; 2022, 117; 129--138
    0209-3324
    2450-1549
    Pojawia się w:
    Zeszyty Naukowe. Transport / Politechnika Śląska
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-15 z 15

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