What is automatic control system?
An automatic control system (ACS) sustains or improves the functioning of a controlled object. In a number of cases the auxiliary operations for the ACS—starting, stopping, monitoring, adjusting, and so on—can also be automated. An ACS functions mainly as a member of a production or some other complex.
What is an example of automatic control?
A familiar example is the cruise controller on your car. You press the button and a computer program watches the speedometer and it automatically adjusts the accelerator pedal position to keep the car speed at the desired value.
What are the types of automatic control system?
The automatic control systems are of the following two types:
- Open-loop or unmonitored system. When the input to a system is independent of the output from the system, then the system is called an open-loop or unmonitored system.
- Closed-loop or monitored system.
What are the 3 basic components of an automatic control system?
An automated system consists of three basic elements: (1) power to accomplish the process and operate the system. (2) a program of instructions to direct the process, and (3) a control system to actuate the instructions.
Why do we need automatic control system?
This and other factors, such as the inconvenience and cost of a human operator permanently on duty, potential operator error, variations in process needs, accuracy, rapid changes in conditions and the involvement of several processes, all lead to the need for automatic controls.
What are the four types of automatic controls?
They are: proportional, integral, and derivative. These control methods may be used singly or in combinations in applying automatic control to a process, depending upon the complexity of the process and the extent of control required.
What is manual control system?
Manual Control system is a open loop control system. This type of system needs an external effort to adjust and correct the errors. Manual control System is less reliable. This type of system is less efficient. Manual control System is less accurate compared to automatic.
Is SCADA a DCS?
SCADA is data-gathering oriented. DCS is process state driven; Distributed Control System (DCS) consists of one or more controllers used to implement advanced process control techniques. Supervisory Control and Data Acquisition (SCADA) systems cannot carry out advanced process control techniques.