# Chapter - State Based Design - PowerPoint PPT Presentation

1 / 11

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?

I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.

Chapter - State Based Design

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

#### Presentation Transcript

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?

• 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.

Construct a state diagram for an elevator

Consider the Intersection below:

Draw a reasonable state diagram

Convert the state diagram to ladder logic using block logic methods:

A Priority Problem

Convert the following state diagram to ladder logic

Write the Boolean equations for the state diagram below:

Convert the equations to ladder logic using the Delayed Update method

Convert the state diagram to ladder logic using state transition equations:

Example:

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.