In: Computer Science
describe the inputs, the plants, and the outputs of open-loop control systems.
Open loop control systems are those control systems whose control action of the input system does not depend on the output of the system.The system provides initial instructions to equipment but provides no means of gathering data and comparing assumptions underlying those instructions to the fact of what the equipment actually produces.
Inputs are mostly in the form of ON-OFF signals.For example a washing machines which requires the water to be switched “ON” and then when full is switched “OFF”.
Plants in control systems are a combination of process and actuator. A plant is basically referred with a transfer function which indicates the relation between an input signal and the output signal of a system without feedback.
In open loop feedback systems, output is not used as the control variable for the system.There is no feedback loop in this system and therefore no data is transferred back to the open loop systems.
There are many real life examples of open control systems:-
Electric clothes dryer
Washing machine
Fan etc