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A few comments: I am impressed with the linearity of the CIM Speed vs Pulse Width. However, I am not sure (and not qualified to speculate not a ME) how well this will linearity will translate to speed of a motor under load (normal 4 motor drive of 130 lb bot). In my experience, at lower powers on the victors the drive motors just hum so will the jaguars just hum (depending on gearing obviously) for a the lower portion of these graphs. Maybe a fast rise like the victors is better in this case?
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The linearity (assuming that it holds under load) makes it easier to build a table replacement for a custom response curve. Define the dead zone, fast rise to first motion, low slope at low speed for precise control, steeper slope to get to full speed.