PID controllers are best used in systems which have a relatively small mass and those which react quickly to changes in the energy added to the process.
The purpose of a PID controller is to force feedback to match a setpoint, such as a thermostat, that forces the heating and cooling unit to turn on or off based on a set temperature. PID control keeps the actual output from a process as close to the target or setpoint output as possible. It’s practically ubiquitous as a means of controlling temperature and finds application in a myriad of chemical and scientific processes as well as automation. PID control is a well-established way of driving a system towards a target position or control parameters. PID controllers use a control loop feedback mechanism to control process variables and are the most accurate and stable controller. A PID (Proportional – Integral – Derivative) controller is an instrument used by control engineers to regulate temperature, flow, pressure, speed, and other process variables in industrial control systems.
