Abstract: The photon-driven direct-current (dc) motor system offers significant advantages over conventional switching electricity-driven dc motor system, such as reduced intrinsic electromagnetic ...

Abstract: This paper proposes a sensorless speed control method for brushed DC motors that extends the usable speed estimation range by combining current-ripple analysis with high-frequency signal ...

Cyclists and people riding scooters along the Metropolitan Branch Trail are being greeted with digital messages either telling them their speed is safe or urging them to slow down.(WTOP/Scott Gelman) ...

Some myths surrounding motor oil just won't go away, but there is truth to the notion that oils with higher viscosity ratings are better suited for warmer climates than lower viscosity oils. Since ...

Police are asking the public for help to identify a suspect accused of attacking a man with a hammer. The assault happened in Northwest D.C. last month. Anyone with information is asked to contact the ...

FBI Director Kash Patel claimed Monday that President Donald Trump slashed Washington, D.C. crime based on questionable data that previously prompted a Trump administration probe. Almost a 30% ...

D.C. is covering November SNAP and WIC with $30M in local funds. Maryland approved $10M for emergency food aid. Virginia launched weekly VENA benefits and added $1M for food banks. WASHINGTON - As the ...

Add Yahoo as a preferred source to see more of our stories on Google. Dirt from the White House’s East Wing demolition project appears to have been moved to a Washington, D.C. golf course that ...

This is a very simple traffic light controller, there are 2 implementation style We use smart RGB single LED for each road to show the signal status to the user. These smart LEDs uses 3 color channel ...

The D.C. U.S. Attorney's Office is ramping up its efforts to link suspects to illegal guns found in homes, cars and backpacks, filing search warrants for DNA and using multiple labs to get it tested.