As an example, consider a person riding a bicycle, with the individual acting like the electric motor. If that person tries to trip that bike up a steep hill in a gear that’s made for low rpm, she or he will struggle as
they attempt to maintain their stability and achieve an rpm that may permit them to climb the hill. However, if indeed they shift the bike’s gears into a rate that will create a higher rpm, the rider will have
a much easier time of it. A constant force could be applied with soft rotation being offered. The same logic applies for commercial applications that require lower speeds while maintaining necessary
• Inertia complementing. Today’s servo motors are producing more torque relative to frame size. That’s because of dense copper windings, light-weight materials, and high-energy magnets.
This creates greater inertial mismatches between servo motors and the loads they want to move. Utilizing a gearhead to better match the inertia of the electric motor to the inertia of the strain allows for utilizing a smaller engine and outcomes in a far more responsive system that is simpler to tune. Again, that is accomplished through the gearhead’s ratio, where the reflected inertia of the load to the engine is decreased by 1/ratio2.
Recall that inertia is the measure of an object’s resistance to improve in its motion and its own function of the object’s mass and shape. The higher an object’s inertia, the more torque is required to accelerate or decelerate the object. This implies that when the load inertia is much bigger than the electric motor inertia, sometimes it can cause excessive overshoot or boost settling times. Both conditions can decrease production series throughput.
However, when the engine inertia is larger than the load inertia, the motor will need more power than is otherwise necessary for the particular application. This improves costs since it requires spending more for a engine that’s bigger than necessary, and because the increased power intake requires higher operating costs. The solution is by using a gearhead to match the inertia of the engine to the inertia of the load.
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