Chapter - State Based Design
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Chapter - State Based Design. Systems have modes of operation. The controller should move sequentially between these states. State Diagrams. General Rules For Construction: 1. Consider the system, What does the system do normally? Does the system behavior change?

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Chapter - State Based Design

Systems have modes of operation.

The controller should move sequentially between these states


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State Diagrams

  • General Rules For Construction:

    • 1. Consider the system,

      • What does the system do normally?

      • Does the system behavior change?

      • Can something change how the system behaves?

      • Is there a sequence to actions?

    • 2. List ‘modes’ of operation where the system is doing one identifiable activity that will start and stop. Keep in mind that some activities may just be to wait.






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A Priority Problem methods:

Convert the following state diagram to ladder logic





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Example: transition equations:

Develop a control description for an injection molding machine

with the different methods described in this chapter.

Develop ladder logic for the one that is best suited.


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