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  1. Vor 2 Tagen · As a result of this study, an improved direct torque control (DTC) method based on sliding mode control (SMC) was used to control the sensorless three-phase asynchronous motor, as well as a third-order cascade inverter has a frequency-modulated carrier (FM—Frequency Modulation) to reduce total harmonic distortion (THD) in torque and current, in order to achieve the best possible result. The ...

  2. Vor 2 Tagen · Lung-RADS ( Lung Imaging Reporting and Data System ), is a classification proposed to aid with findings in low-dose CT screening exams for lung cancer. The goal of the classification system is to standardize follow-up and management decisions.

  3. Vor 2 Tagen · History. Data. The GOES X-ray plots shown here are used to track solar activity and solar flares. Large solar X-ray flares can change the Earth’s ionosphere, which blocks high-frequency (HF) radio transmissions on the sunlit side of the Earth. Solar flares are also associated with Coronal Mass Ejections (CMEs) which can ultimately lead to ...

  4. Vor einem Tag · The purpose of this study was to investigate the impact of voltage drop of a three-phase voltage source inverter on driving brushless motors. This study also proposes an enhanced field-oriented control scheme that accounts for inverter voltage drop, enabling efficient driving at very low motor speeds. Experimental results are provided to verify the theoretical study and the proposed control ...

  5. Vor 3 Tagen · For a silicon plate with a thermal conductivity peak at 40 K that supports the propagation of thermal waves with an excitation amplitude of 10 K, we observe a net heat flux exceeding 60 W cm − 2 at 20 K and falling below − 20 W cm − 2 at 65 K. Larger excitation amplitudes allow higher or lower heat fluxes to be achieved, which makes them ...

  6. Vor 3 Tagen · Liebe community, Ich überlege, mir ein gutes, möglichst schnelles ABER auch möglichst bequemes, möglichst verkehrstaugliches Allround-Liegerad zu kaufen. Dabei schwanke ich zwischen obigen Modellen (oder Vorgängermodellen, und das wäre auch die Preisspanne). Es ginge im Wesentlichen darum...

  7. Vor 2 Tagen · We develop a theoretical framework that allows us to explore the coupled motion of neutron-superfluid vortices and proton-superconductor flux tubes in a gravitationally collapsed condensate, which describe neutron stars that form pulsars. Our framework uses the 3D Gross-Pitaevskii-Poisson-Equation (GPPE) for neutron Cooper pairs, the Real-Time-Ginzburg-Landau equation (RTGLE) for proton Cooper ...