to use PID you need feedback | Microcontroller › 8051 › Solid State Relay based AC motor speed control using ARM7 LPC2129 Microcontroller › to use PID you need feedback April 19, 2014 at 6:38 pm #11591 Ashutosh BhattParticipant to use PID you need feedback of current motor speed how you are getting it? how you are setting motor speed? because the PID works on error and error = set speed – current speed
