Types of Control System
A Closed-loop Control System, also known as a feedback control system is a control system which uses the concept of an open loop system as its forward path but has one or more feedback loops (hence its name) or paths between its output and its input.
A distributed control system (DCS) is a specially designed automated control system that consists of geographically distributed control element SCADA vs DCS A distributed control system (DCS) is a specially designed automated control system that consists of geographically distributed control elements over the plant or control area.
Feed-forward, sometimes written feedforward, is a term describing an element or pathway within a control system that passes a controlling signal from a source in its external environment, often a command signal from an external operator, to a load elsewhere in its external environment.
Industrial control system (ICS) is a general term used to describe the integration of hardware and software with network connectivity in order to support critical infrastructure.
On Off Control Theory | Controller Sometimes, the control element has only two positions either it is fully closed or fully open. This control element does not operate at any intermediate position, i.e. partly open or partly closed position.
Open-loop Control Systems Summary. We have seen that a controller can manipulate its inputs to obtain the desired effect on the output of a system. One type of control system in which the output has no influence or effect on the control action of the input signal is called an Open-loop system.
SCADA (Supervisory Control and Data Acquisition) is an industrial control system at the core of many industries such as manufacturing, energy, water, power, transportation, and more.
An actuator is the mechanism by which a control system acts upon an environment. The control system can be simple (a fixed mechanical or electronic system), software-based (e.g. a printer driver, robot control system), a human, or any other input.
Effective control systems tend to have certain common characteristics. The importance of these characteristics varies with the situation, but in general effective control systems have following characteristics.
Comparators can be a type of amplifier distinctively for null comparison measurements. It is the equivalent to a very high gain amplifier with well-balanced inputs and controlled output limits. The circuit compares the two input voltages, determining the larger.
A sensor is a device that detects and responds to some type of input from the physical environment. The specific input could be light, heat, motion, moisture, pressure, or any one of a great number of other environmental phenomena.