Now showing items 1-20 of 697

    • Contribution to the Ring-Core Fluxgate Theory 

      Author: Ripka P.
      (The Royal Swedisch Academy of Sciences, 1989)
      Existing theories for open-core fluxgate are not fitting experimental results in the case of ring-core sensors. Simple description based on transfer functions which takes into account the interaction between two half-cores ...
    • On Cross-Axis Effect of the Anisotropic Magnetoresistive Sensors 

      Author: Kubík J.; Včelák J.; Ripka P.
      (Elsevier Science, 2006)
      The article deals with fully digital compass based on AMR sensors and accelerometers. The developed device gives information about actual azimuth, roll and pitch. The article is especially focused on errors caused by sensors ...
    • Temperature Offset Drift of GMI Sensors 

      Author: Malátek M.; Ripka P.; Kraus L.
      (Elsevier Science, 2008)
      Temperature Offset Drift of GMI Sensors is mainly caused by temperature dependence of permeability
    • Microstructure-Based Modeling of Elastic Functionally Graded Materials: One Dimensional Case 

      Author: Sharif Khodaei Z.; Zeman J.
      (Mathematical Sciences Publishers, 2008)
      Functionally graded materials (FGMs) are two-phase composites with continuously changing microstructure adapted to performance requirements. Traditionally, the overall behavior of FGMs has been determined using local ...
    • Multiwire Core Fluxgate 

      Author: Ripka P.; Li X.P.; Fan J.
      (Elsevier Science, 2009)
      Multiwire core fluxgate has higher sensitivity due to the higher cross=sectional area of the core
    • Electric Current Sensors: a Review 

      Author: Ripka P.
      (IOP Publishing, 2010)
      The review makes a brief overview of traditional methods of measurement of electric current and shows in more detail relatively new types of current sensors. These include Hall sensors with field concentrators, AMR current ...
    • Modeling of Passive Forces of Machine Tool Covers 

      Author: Kolář P.; Hudec J.; Sulitka M.
      (The Japan Society of Mechanical Engineers, 2010)
      The passive forces acting against the drive force are phenomena that influence dynamical properties and precision of linear axes equipped with feed drives. Covers are one of important sources of passive forces in machine ...
    • Study of Motor-driven Industrial Robot Wrist 

      Author: Andrlík V.; Maršán Z.; Škoda V.
      (Slovenská technická univerzita, materiálovo-technologická fakulta, 2010)
      This report is devoted to study of conception of motor-driven wrist of industrial robots and manipulators. Research is focused on design of motor-driven wrist module aimed at increasing number of degrees of freedom of ...
    • Possibilities of Compact Spherical Joint Creating 

      Author: Andrlík V.; Jurda P.
      (Slovenská technická univerzita, materiálovo-technologická fakulta, 2010)
      In recent applications of output kinematic strings of manipulation and automation techniques, industrial robots and manipulators and other motional mechanisms is using of spherical joint not extensive. The reason is in ...
    • Models of 40-Year Spatial Development of Cities in the Czech Republic in a geographic information system 

      Author: Halounová L.; Vepřek K.; Řehák M.
      (IARIA, 2011)
      The paper shows of processing of 40 year-development in cities of the Czech Republic using GIS and remote sensing data. The development was based on urban functional land use classes
    • Metallurgical Aspects of Laser Surface Processing of PM Cr-V Ledeburitic Steel 

      Author: Cejp J.; Brajer J.; Jurči P.
      (Hindawi Publishing Corporation, 2011)
      The Vanadis 6 ledeburitic-type steel was laser surface remelted. Microstructural changes and hardness in laser affected material were investigated using light microscopy, SEM, and EDS-microanalysis. It was found that the ...
    • A comparative study on the dynamics of high speed spindles with respect to different preload mechanisms 

      Author: Altintas Y.; Cao H.; Holkup T.
      (Springer, 2011)
      This paper presents the effects of bearing preload mechanisms on the dynamic performance of high speed spindles. The comparisons of two main types of bearing preload-\"constant\" and \"rigid\"-mechanisms are provided using ...
    • Contribution to Numerical Simulation of Laser Welding 

      Author: Ambrož P.; Turňa M.; Taraba B.; Sahul M.
      (Elsevier B.V., 2011)
      Contribution deals with numerical simulation of thermal and stress fields in welding tubes made of austenitic CrNi steel type AISI 304 with a pulsed Nd: YAG laser. Process simulation was realised by use of ANSYS 10 software.
    • Simulation of Dynamic Properties of a Spindle and Tool System coupled with a Machine Tool Frame 

      Author: Kolář P.; Janota M.; Sulitka M.
      (Springer, 2011)
      The cutting performance relates to the dynamic properties of the whole system of the tool, spindle and machine tool frame. The impact of the machine frame properties on the dynamic properties at the tool end point is studied ...
    • Improving the information literacy at the Czech Technical University in Prague : support of study and research 

      Author: Pilecká V.; Tichá L.
      (ISAST, 2012)
      The paper presents the activities of the Central Library of the Czech Technical University in Prague (CTU), which was created by a merger of independent faculty libraries in 2009. The library's key role lies in supporting ...
    • A Magnetic Distance Sensor with High Precision 

      Author: Zikmund A.; Ripka P.
      (Elsevier Science, 2012)
      A magnetic distance sensor working at very low frequency has been developed to measure distances up to 1 m. The principle is similar to that of the 3-D magnetic tracker, but the system is optimized to minimize the error ...
    • AMR Gradiometer for Mine Detection 

      Author: Vyhnánek J.; Janošek M.; Ripka P.
      (Elsevier Science, 2012)
      Anisotropic magnetoresistors (AMRs) are used to build an advanced mine detector. The sensing head involves a gradiometric pair of AMR sensors and a continuous-wave driven excitation coil, so the gradiometer is capable of ...
    • Field Annealed Closed-path Fluxgate Sensors Made of Metallic-glass Ribbons 

      Author: Butvin P.B.; Janošek M.; Ripka P.; Butvinová B.B.; Švec sr. P.Š.; Kuzminski M.K.; Švec Jr. P.Š.; Janičkovič D.J.; Vlasák G.V.
      (Elsevier Science, 2012)
      One-step field annealing of Co-based metallic glass was chosen to acquire low-magnetostrictive material with anisotropy required to reduce noise by favoring magnetization rotation. Despite the risk of bending stress ...
    • Estimation of non-Gaussian noise parameters in the wavelet domain using the moment-generating function 

      Author: Švihlík J.; Fliegel K.; Kukal J.; Jehotová E.; Páta P.; Vítek S.; Koten P.
      (SPIE, 2012)
      We discuss methods for modeling and removal of noise in astronomical images. For its favorable properties, we exploit the undecimated wavelet representation and apply noise suppression in this domain. Usually, the noise ...
    • 5. kongres E&E - Trendy v oblasti nízkoteplotních a teplých asfaltových směsí 

      Author: Valentin J.; Žák J.
      (Sdružení pro výstavbu silnic, 2013)
      Posledním tématem, který shrnuje poznatky prezentované v rámci 5. kongresu EURASPHLAT & EUROBITUME v Istanbulu, je oblast nízkoteplotních a teplých asfaltových směsí (NTAS), které představují již několik let podporovaný a ...