Control Systems Overview Flashcards
A set of devices or mechanisms that manage, regulate or manipulate the behavior of a dynamic system to achieve desired outcomes
Control System
It is the primary objective of a control system.
To maintain the desired state or performance of a system.
The control action is determined based solely on the input and doesn’t take into account the system’s output or actual performance
Open Loop System
This type of control system lacks feedback mechanism
Open Loop System
Characteristics of an open-loop control system
- No Feedback
- Predictive Control
- Simplicity
- Vulnerability to disturbances
- Limited Accuracy
Example of open loop system
- Toaster
- Irrigation System
- Traffic signal timing
Also known as Feedback control system
Closed-Loop Control System
This feedback mechanism enables the system to respond to disturbances, uncertainties, and changes in the environment resulting in improved accuracy and robustness.
Closed-Loop Control System
Characteristics of a closed-loop control system
- Feedback mechanism
- Continuous Monitoring
- Error Correction
- Adaptability
- Improved Accuracy
- Stability and robustness
Refers to the actual system that is being controlled
Plant/Process/System
Are used to measure the system’s output
Sensor/Transducer
Is a device that converts energy from one form to another
Transducer
Is a device, module or subsystem whose purpose is to detect events or changes in its environment and and send the information to other electronics frequently a computer processor
Sensor
It computes the control action based on the error signal
Controller
Difference between the desired reference and the actual output
Error signal
