Thread: Motor Bias
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Unread 31-10-2005, 23:35
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Re: Motor Bias

If you follow the thread that Mike Betts referenced there is a link that does explains the nonlinear response. Basically, the motors are not a pure resistive load. The motors have rest stance, capacitance, and inductance. The motors are not being driven by a constant DC voltage. They are driven by a pulse. Found it. Here's the link-speed controllers One thing that the link does not mention is the internal resistance of the battery. It also can affect the performance curve. Last year on our bot we had to increase the right side drive train by 4 PWM counts to drive straight. It was applied for both forward and reverse. I attribute it to the gear box. It had more backlash and was noise from day one.