Control engineering

Control engineering is the engineering discipline that focuses on mathematical modeling of systems of a diverse nature, analyzing their dynamic behavior, and using control theory to create a controller that will cause the systems to behave in a desired manner. Modern control engineering is closely related to electrical, electronic and computer engineering, as electronic circuits can often be easily described using control theory techniques. And also it is related to biological sensor. Control engineering needs Electrical circuits, digital signal processors and microcontrollers. As engineering is developing, control engineering is often desired. For example, there are automobile, biologcal engineering, wireless communication, and etc.

In most of the cases, control engineers utilize feedback when designing control systems. For example, in an automobile with cruise control the vehicle's speed is continuously monitored and fed back to the system which adjusts the motor's torque accordingly. Also resently, control system is used in nano technology. And the field of control within chemical engineering is known as process control. For example, we can change chemical process more fast and easily. Many developments were invoked by this process control. Like this, Control engineering has diversified applications that include science, finance management, and even human behaviour.

So, What is the important aspect of control engineering? The answer is feedback. But control engineers may also work on the control of systems without feedback. This is known as open loop control. An open-loop controller, also called a non-feedback controller, is a type of controller which computes its input into a system using only the current state and its model of the system. A classic example of open loop control is a washing machine that runs through a pre-determined cycle without the use of sensors.