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Originally Posted by Mike Betts
Is there at Mechanical Engineer out there to set me straight?
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Mike,
You are 100% correct as far as robots go. I'm not familiar with ICU's but that is how DC motors work.
Refer to attachment:
This is just a quick graph showing some random motor (a chiaphua, actually) with 4 different gear ratios. 1:2, 1:1, 2:1, 4:1.
You can see in the plot how in order to maintain optimal power usage at all speeds, you need to "bounce along the peaks", and shift where the plots intersect. Ideally, you could use a CVT to vary your gear ration and ALWAYS stay at max power (rather than bounce up and down).
Hope this makes SOME sense,
John