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Unread 08-02-2017, 11:45
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Re: 2017 Bosch Seat Motor

Quote:
Originally Posted by FRC6055 View Post
We decided to use it to lower our gear holder to place it on the peg. We machined down a hex shaft to a square to fit tightly into the star output. It fits very tightly and we are very happy with how easily it lowers and lifts the gear holder with the gear in it. The encoder enable us to lower the holder to a specific degree to drop the gear on the peg or lean forward to receive the gear then come back to vertical. The only issue we are having is we are noticing that our encoder is losing counts and after repeated cycles of rotating up and down, it will not rotate down as far or rotate up as far.
In the automotive application for this motor there's actually a 12V input to the hall so the peak to valley of the wave is more than you get with a 5V signal. I wonder if that could be the reason you might loose some counts. Can you keep track of your counts and compare with actual? Should be ~175 counts per output revolution. Maybe put a limit switch to zero and reset your reference so count losses don't add up over time. Since I don't have much experience on the programming side I would be interested if this is a big problem for other teams and if they found a good solution.
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