In this paper, a PID controller is designed and constructed to control the output pressure of needle valve in the hydraulic circuit. The valve is controlled by the servo motor which has connected to ...

To calibrate the zero position of the encoder, the motor slowly moves the valve stem down until it hits the hard endstop. The motor stopping is detected by the arduino by a drop in encoder pulses. The ...

By the way, we’ve covered a PID library for Arduino before. While this post talks about temperature, PID control is used for everything from flight control to levitation.

In this paper, a PID controller is designed and constructed to control the output pressure of needle valve in the hydraulic circuit. The valve is controlled by the servo motor which has connected to ...