The Codex of Business Writing Software for Real-World Solutions 2.pptx
Systems
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6. Pupil Problems 1) A microwave oven Timer Magnetron Electrical energy Heat, Light, Hot food On/Off Turntable Food 1 st Inputs 2 nd Subsystems 3 rd Boundary 4 th Flow of information arrows 5 th outputs Set time
7. Pupil Problems 2) Washing machine Heater Motor Electrical energy Clean Clothes Control Dirty clothes Pump Drum Water Hot water,etc. Set Cycle
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10. Control Systems Tap Handle Valve Water level Water Person Flood Manual Open Loop
11. Control Systems Tap Handle Valve Water level Water Eyes / Brain Hand Correct level Manual Closed Loop
12. Control Systems Automatic Closed Loop Start Switch Valve Water level Water Level Sensor Control Unit Correct level Press
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14. Control Diagrams Example: Temperature control in a gas oven We could draw a systems diagram for the gas oven, but it is sometimes necessary to draw a more accurate control diagram Temperature sensor Oven Burner Gas Valve - + Set value Correct temperature Actual value
15. Error Detector Symbol - + Set value Actual value Error How the error detector works: If SET VALUE (+) is bigger than the ACTUAL VALUE (-) the ERROR SIGNAL is ON (Raising the oven temperature) If the SET VALUE (+) is less than the ACTUAL VALUE (-) the ERROR SIGNAL is OFF (Cooling the oven temperature)
![Systems Approach Universal System ,[object Object],[object Object],[object Object],[object Object],PROCESS INPUT OUTPUT](https://image.slidesharecdn.com/systems-12722/85/Systems-1-320.jpg)
![Systems Diagrams ,[object Object],[object Object],OUTPUTS: KETTLE Water and Electricity Hot water, Noise and Steam Water and Electricity. Hot water, noise, steam. INPUTS:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)