Abstract: In this paper a model is developed to run a separately excited direct current (d.c) motor using a single phase alternating current (a.c) source by converting the a.c source into variable d.c ...

Abstract: Nowadays, direct current (DC) motors are popular in all walks of life because of their many characteristics, such as simplicity and low cost. Precise angle control is critical for motors.

While current control and PWM switching play the most direct role in driving brushless DC motors, the motion profile and ...

We need to talk about the kids in Washington, D.C., and why blue cities need to wake up. Last weekend, roughly 200 juveniles flooded Navy Yard, one of the city’s busiest dining and nightlife districts ...

Aviation authorities have issued a ground stop at Washington, D.C.-area airports after an unknown odor was detected at an air traffic control tower in Virginia, the second time in two weeks that a ...

Derived prices are not provided by exchanges. They are derived by market makers in CFD OTC market and hence prices may not be accurate and may differ from the actual market price, meaning prices are ...

The FAA issued a ground stop for all D.C. area airports Friday evening. It has since been lifted for Dulles and BWI, but remains in effect for DCA. It's due to an issue at the area's main control ...

WASHINGTON — President Donald Trump announced Monday he is placing Washington, D.C.'s police department under federal control and deploying the National Guard to the city as he escalates his criticism ...

End-to-end processing chain: DL-SCH encoding → PDSCH → Precoding → CP-OFDM → CDL/TDL Channel → Receiver (timing sync, demodulation, channel estimation, decoding) with CSI feedback and HARQ ...