Select Right Type of Controller

How to Select the Right Type of Controller

Distinguishing Characteristics  P-only Accelerates the response of controlled process Produces offset except for integrating (1/s) processes PI Eliminates offset Usually

Typical process control loop

How Process Control Loop Works

A typical process control system is shown in Figure. Assume the physical variable to be controlled is the temperature. Basically Industrial

On-Off Controller example

ON-OFF Controller Principle

On-Off control is the simplest form of feedback control. An on-off controller simply drives the manipulated variable from fully closed

Derivative Controller Response

Derivative Controller Principle

RATE OR DERIVATIVE ACTION Consider a control system subjected to a disturbance, which causes the error to increase in a ramped

Integral Wind-Up Limitation

What is Integral Wind Up ?

The PID controller plays a major role in controlling the process parameters in process industries. It consists of Proportional term,

PID Controller Tuning

How to tune a PID Controller ?

What PID stands for? It stands for Proportional, Integral, and Derivative controller. It’s a mathematical description of the way you