Term used in process control

In this section we will give focus on terms that commonly used inprocess control.

• System : An interconnection of elements and devices for a desired purpose.
• Process : The device, plant, or system under control.
• Feedback control system : Feedback control system is a system where product always compared with entry set point and difference between value made foundation for control.
• Servo control : Servo control is a feedback control system where the product is position, velocity or acceleration.
• Dynamic variable : Dynamic variable is physical any parameter that variable the value spontaneously or through external influences.
• Error signal : Difference between entry signal and feedback signal/product.
• Process compound variable : process compound variable is process which contains more than one variable.
• Controller : Device which control process certain system and acts against error signal to reduce error to product like is wanted.