To make sure that I'm operating below resonance I have connected my oscilloscope to the load cells and in a crude but effective method, if you just tap each end at the pedestal without the crank rotating it will cause...
I love Amazon! At 6:00 a.m. this morning I ordered a bunch of trick parts for the balancing machine. All of the pieces arrived a couple of hours ago, on a Sunday, on the same day I ordered them! How wonderful of a...
Yes it is calculating RPM based on the time interval from 0 to 0°, covering one full revolution. In the burst mode it is collecting data over 150 rotations so there are 150 values for the RPM which are averaged. In the...
Yes, N samples from 0-1, then 1-2, etc. I am detecting 0 deg not by a falling edge, no, but simply by the moment where the position sensor's output = the known low ADC value. I have kept the T4 code as simple as...
Over a series of test runs I had to determine how many data samples I could take within 1 degree of crankshaft rotation at a maximum of 1000 RPM or so. So I ended up setting the number of ADC conversions just a hair...
The position sensor only provides the angular position of the crankshaft. The two load cells, one on each pedestal, provide the force data created by the imbalance of the part.
In burst mode the teensy first begins...
2 weeks obsessed yield a quite satisfying outcome.
I've always wanted to build a balancing rig like this And finally the stars aligned and made thoughts into matter.
The physical construction is pretty...
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