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Unread 05-07-2007, 22:42
eugenebrooks eugenebrooks is offline
Team Role: Engineer
AKA: Dr. Brooks
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Re: PWM translates to movement?

<<<In the case of 3/4 forward, what the victor actually feeds the motor is 75% of the time a full forward signal, and 25% of the time a full reverse signal - flipping back and forth very fast, one or 2 thousand times per second (but this can be from dozens to tens of thousands per second). Because of the mass and inertia of the motor, it reacts as if you just sent 75% of the regular voltage, instead of actually reversing.

This means, the victor has only two output states: Full forward and full reverse. By switching between them very fast, the motor sees the 'average' and reacts accordingly.>>>

I would hope that the output of the victor has four states,
full forward, full reverse, motor terminals open (coast) and
motor terminals connected to each other (brake).

Switching between full forward (or full reverse) and terminals
open would be a good thing, modulating the average torque of
the motor. Switching between full forward and full reverse
would be a bad thing...

Eugene