Simple question : How would you control the flow of a DIY peristaltic pump when you don't want to run it at max speed ? I see 3 choices :
1) regulate/reduce the voltage to get lower speeds (would that work with an AC motor or would I just loose torque?)
2) run at full voltage, but pulse the current (x times per seconds)
3) run at full voltage, full current (max speed), but take breaks every z seconds (for example, run 5 seconds, stop for 5 seconds ...)
Lets assume stepped motors are not an option.