Pulse Width Modulation (PWM) Speed Control of a DC motor

We can control the speed of a motor using an open loop control or closed loop control strategy. The open loop control is the simplest form of motor control; here we simply set the drive voltage value and the motor … Read more

What is the Controller?

A controller is a device that generates an output signal based on the input signal it receives.

The input signal is actually an error signal, which is the difference between the measured variable, and the desired value, or setpoint.

The … Read more

Feedback Control System

The basic elements of a feedback control system are represented by the block diagram below. The functional relationships between these elements are also shown in the diagram.

Feedback Control System block diagram
Feedback Control System block diagram

The block diagram represents flow paths of control … Read more