|Open Loop & Closed Loop Control System|
There are two common classes of control systems:-
1. open loop control systems :- In open loop control systems output is generated based on inputs.
2. closed loop control systems:- In closed loop control systems current output is taken into. consideration and corrections are made based on feedback. A closed loop system is also called a feedback control system. The human body
is a classic example of feedback systems
Linear control systems use linear negative feedback to produce a control signal mathematically based on other variables, with a view to maintain the controlled process within an acceptable operating range.The output from a linear control system into the controlled process may be in the form of a
|cascade control systems: (a) temperature control of a stirred tank reactor, (b) governor of a DC motor with motor current control|
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