Marine 1.1.3.9 Lab - Open-Loop Control System [PDF]

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Ja’Mia Marine 2/11/2021 Lab – Open Loop Control Systems Objective In this activity, you will describe the inputs, the plants, and the outputs of open-loop control systems.



Background/Scenario Input is not dependent on the output in an open-loop control system. An example of an open-loop control system is a light switch in your home. Moving the light switch to the “on” position is the input, closing the circuit is the plant, and the light turning on is the output.



In this activity, you will consider the following examples of common open-loop control systems and describe the applicable inputs, plants, and outputs. 1. Complete the Input, Plant, and Output fields for the Lawn Sprinkler and Toaster systems. 2. Add your own examples of open-loop control systems in the spaces provided below. System Light Switch



Lawn Sprinkler



Toaster



Ice Cream Machine



Smoothie Maker



Input The switch is moved to the on position.



Plant



Output



The light fixture’s electrical circuit is closed.



The light fixture turns on.



Switch On



The timer for sprinklers is on. Start watering the lawn



Watered lawn



Switch On



Electricity to the circuit and the timer is on



Toasted bread



Switch On



Electricity to the circuit and the timer is on. Starts making ice cream



Switch On



Electricity to the circuit and the timer is on. Starts making smoothie



Ice Cream



Smoothie