The Toyota MGR doesn't **need** the oil in it to turn. I'm just turning the whole differential by hand to get the resolver waveforms. This is assuming you turn it slow enough by hand that it doesn't need lubrication or cooling..
One of them is sitting on my desk with wires in/out of the resolver, the other is sitting around in many pieces.
Basically, you induce a sine or cosine wave into the resolver,(using some source; I started with my signal generator) and it puts out a sine AND cosine waveform to calculate the postition with. So when I said I needed three Microprocessor connections, I am going to produce a sinewave based on a pulse signal (filtering, basically) then interpret the output of the resolver using the signals put into the PIC's AtoD converter. So far, I've gotten through making a sine wave based on a pulsed output. It is possible to get some pretty ugly "sine waves" out of a resolver when you put in some ugly signal waves...
By the way, I'd love this to be your prototype; (it would be nice to work out the control software like this) however, I'm not sure whether the average "customer" of the controllers would prefer an induction motor or a PM synchronous motor. You've made a lot of progress with induction motors - this will be a pretty significant change. It can be run on much lower (less dangerous) voltages; it just won't hit it's rated power/speed capability.
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Originally Posted by MPaulHolmes
Does that PM synchronous motor need the oil inside for it to turn at all? How did you spin the motor to see the resolver waveforms, e*clipse?
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