I might also add the following:
In the case of the normal pulse motor, we are virtually unlimited as to how much energy we can put in to the system and achieve a result on the output in the form of speed and/or torque increases (to a point of course). So we are "adding" energy to the system to achieve motive force.
In the case of the Orbo, we are starting with a fixed packet of energy, and to extract that energy to do work we need to "add" an equal and opposite (actually somewhat higher due to losses) amount of energy to the system. In this case, the rotor magnets are the fixed packets of energy. The coil cores determine how efficiently we can extract energy from those packets. The higher the mu, the higher this efficiency (notwithstanding saturation effects).
In effect, with the Orbo configuration we are subtracting energy from the system to make it work. Everything is inverted in a way. We start with an energy source and interaction that is always ON (the magnet/core attraction), and we need to be able to turn it OFF. Conventional pulse motors start with zero energy/no interaction, and we turn the energy ON to make it work.
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« Last Edit: 2010-03-01, 01:53:03 by poynt99 »
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