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Types of Control Systems
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Time-Invariant Control System
Time-Invariant systems have system dynamics that do not change over time. Example: Most household appliances like washers or ovens.
Nonlinear Control System
Nonlinear control systems do not follow the superposition principle and are described by nonlinear equations. Example: A robotic arm with complex motion patterns.
Adaptive Control System
Adaptive control systems adjust their parameters based on the changes in the external environment and the system. An example is a modern autopilot system in aircraft.
Closed Loop Control System
A closed loop control system uses feedback to control states or outputs of a dynamical system. An example is an Air Conditioner equipped with a thermostat.
Linear Control System
A linear control system has a principle of superposition holding, and its behavior is described by linear differential equations. Example: Cruise control in vehicles.
Digital Control System
Digital control systems use digital computers to perform control actions, usually for discretized models. Example: Digital thermostats.
Analog Control System
Analog control systems use analog electronic devices to manipulate continuous control signals. Example: Early generation temperature controllers.
Open Loop Control System
An open loop control system acts without feedback; it is simple and less expensive. An example is a central heating furnace.
Robust Control System
Robust control systems maintain performance in the presence of uncertainties within set bounds. Example: Control systems in nuclear reactors.
Time-Variant Control System
In Time-Variant systems, the system's characteristics change over time. Example: Stock market prediction algorithms.
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