I want to build a rate table, to calibrate mems Gyros. I did some basic sizing, and decided on a 500W DC motor. I would like the rpm of the table to change like a sine wave, if necessary, so that i can get the frequency response of the gyro.
For closed loop control, i am thinking of using an optical encoder and a pid controller(on Arduino) that controls rpm using pwm. I would also like to log all data from the table and the Gyro onto an SD card and am thinking of this option http://www.chipstobits.com/blog/storage-shield/
I understand that this power is way more than what people normally use an Arduino for Any comments/suggestions/thoughts are all welcome.
Thanks Sam p.s.--To be jargon free, a rate table is just a circular disk that rotates 'almost exactly' at a user desired rpm