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June 12, 2020

As an example, consider a person riding a bicycle, with the person acting like the engine. If see your face tries to ride that bike up a steep hill in a gear that is designed for low rpm, she or he will struggle as
they attempt to maintain their stability and achieve an rpm that will allow them to climb the hill. However, if indeed they shift the bike’s gears into a speed 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 supplied. The same logic applies for industrial applications that want lower speeds while preserving necessary
torque.

• Inertia coordinating. Today’s servo motors are generating 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 engine to the inertia of the strain allows for utilizing a smaller electric motor and outcomes in a far more responsive system that is easier to tune. Again, that is attained through the gearhead’s ratio, where the reflected inertia of the strain to the motor is decreased by 1/ratio2.

Recall that inertia is the measure of an object’s resistance to improve in its motion and its function of the object’s mass and shape. The higher an object’s inertia, the more torque is needed to accelerate or decelerate the object. This means that when the load inertia is much bigger than the engine inertia, sometimes it could cause excessive overshoot or enhance settling times. Both circumstances can decrease production range throughput.

On the other hand, when the engine inertia is bigger than the strain inertia, the electric motor will need more power than is otherwise necessary for this application. This improves costs because it requires having to pay more for a electric motor that’s larger than necessary, and since the increased power usage requires higher working costs. The solution is by using a gearhead to complement the inertia of the electric motor to the inertia of the load.

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