Contact force between pantograph and contact wire presents periodic variation with the running of trains. In this paper, the effects of dynamic contact force on friction coefficient and wear rate of pure carbon
The operational definition of the ampere is based on the force between current-carrying wires. Note that for parallel wires separated by 1 meter with each carrying 1 ampere, the force per meter is Fl=(4π×10−7 T⋅ m/A)(1 A)2(2π)(1 m)=2×10−7 N/mFl=(4π×10−7 T...
By focusing on fixed-axis reaction wheels, pseudoinverse and minimax distribution laws are derived. The latter solution aims to minimize either the peak torque or the peak angular momentum, which is in favor of a longer lifetime. An important issue is the reaction wheel microvibration analysis:...
Collecting Data for Effective Personalisation Is “A High Wire Balancing Act” — Here’s How to Toe the Line Salesforce EMEA December 13, 2024 Insights from Humanworks Founder Cosmo Shield and our Head of Solutions Engineering Kulvinder Hari on harnessing data for personalised customer experien...
When a conducting wire is moved in a magnetic field, the field induces a current in the wire. Conversely, a magnetic field is produced by an electric charge in motion, such as when a wire is carrying a current. So all the electric wires in your household produce tiny magnetic fields. Th...
a patented technique31,33,41, based on current chopping, that reduces this effect greatly. It will be used in the Offset and shielding efficiency section. The motional current in Eq. (2) depends on the applied force (Fm + Fe). For a damped harmonic oscillator driven at the resonant...
Most of our practical navigation is filled with such high-level navigation commands that guide us until the very end, and all such conditions specify a general direction of traversal and not a specific goal. Imagine walking from your current room to anywhere else on the campus. The walk ...
When we increase the current to a higher value, electromagnetic forces will dominate over gravity. Again, there are two different cases. If the anode area on the underside of the droplet is small in relation to the cross-sectional area of the wire, the forces acting on the droplet will act...
FIG. 6 is a partial schematic diagram of a modification to the system of FIG. 2 for providing power remaining indications. BEST MODE FOR CARRYING OUT THE INVENTION Referring now to FIG. 1, a side-arm controller 10 according to the invention may comprise a stick 12 mounted on a suitable ...
It is of great importance to technology to have an instrument that will detect and measure the Newtonian gravitational force gradient fields existing around large ore bodies and oil-containing formations while being operated on a moving platform. It is of further importance to technology to have ...