Amazing. I should have gone to engineering school. Apparently what I have been building with my tilt sensor and E/P transducer is a PID loop or proportional–integral–derivative controller. And to make it worse there are numerous algorithms already defined using variables that have real names like “deadband” and “gain”.
I am working with Enfield Technologies, the experts in proportional control of pneumatics, and I think they have a product that would be more suited for our needs.
![m1d_small[1]](https://unistellar.risetvp.com/wp-content/uploads/2012/07/m1d_small1.jpg)
0.002 is the noise in G’s that we can expect to hear on the Phidgets board so if the last value is +- 0.002 then ignore it?
Hysteresis is 5%, is that our deadband? 5% of the total range?
Interval is 4ms (250 samples per second) limited by the Phidgets (the Enfield is 2.8ms)
Kp of 1
Ki of 0.02
Kd of 1
Leave a Reply