L01 - Control Systems Fundamentals
Analyze behavior of dynamical systems
Define and study feedback control system performance
Design control devices
Plant - System to be controlled (e.g: A car)
Controlled Output
Control Input
Reference Signal
Controller - Device that produces control input
Disturbance input
Provide input signal to plant depending on past and present values of reference signal only.
No access to any information about the plant except for maybe some possible prior information (e.g. what is known before the control signal is applied)
Exploit information about the plant through the feedback of the measured output
Sensor - A device that measures a physical quantity and converts it into an electrical signal which can be processed by instruments. (e.g radars)
Sensor Noise
Closed-loop controllers provide control input based on past and present values of both reference signal AND measured output.
More powerful than open-loop since it's able to withstand and compensate for disturbances and uncertainty/variations.
An actuator is a part of the system that makes the control action possible (e.g: a pump, motor, etc..)