How to adjust the speed of the dc motor controller

The rotating speed of dc motor controller to want how to adjust? Let's learn about the. n=( U - IR) / K phi is the formula of the rotating speed of dc motor controller, which U as the armature terminal voltage, I as the armature current, total resistance R of the armature circuit, phi per pole flux, K to the motor structure parameters. Through the calculation formula of the above, we can see speed and the armature voltage of dc motor controller, armature current, the armature voltage and current at the same time through regulated, can change its speed. To sum up, whether you about how to adjust the dc motor speed controller to understand.