Systems in TechnologySystems in Technology

Objectives:Define: system, component, troubleshooting, feedback, and automation

Draw and label an open and closed loop systems model

List advantages and disadvantages to each type of system

Definition:Definition:

System-A combination of parts that work together as a whole.

3 Types:3 Types:

•MechanicalUses moving parts like motors, springs, etc.

•ElectricalUses electrical parts like wires, switches, etc.

•FluidPneumatic- Uses gasses

Hydraulic- Uses Liquids

Definition:Definition:

Component-One part of a system.

Definition:Definition:

Troubleshooting-

Trying to find the problem that needs to be fixed.

Definition:Definition:

Feedback-Helpful information found by

monitoring a system.

Definition:Definition:

Automation-The automatic control of a

process by a machine.

____ ____ System____ ____ System

Input Process Output

Desired result

Where work gets

done

Actual results

P.E.T.T.R.I.C.

Open Loop

Open Loop Advantages Few parts, cheap, easier to troubleshoot.

Open Loop Disadvantages Cannot adjust itself. You get whatever comes out! Lacks feedback control.

_____ _____ System_____ _____ System

Input Process Output

Monitor

AdjustCompare

Closed Loop Systems have a Feedback Loop!

Closed Loop

Step What happens at each step

Input Desired result.

Compare and

Adjust

Compares the output with the input.

Adjusts only if needed.

Process Where work gets done.

Output Actual results Desired, undesired, expected, or unexpected.

MonitorSensors that observe the output.

Closed Loop Advantages Uses a feedback loop to adjust itself. Fewer mistakes.

Closed Loop Disadvantages

More parts, more expensive, troubleshooting more difficult.