Assignment 3 Spring 2011

Assignment 3 Spring 2011 - 10 What is polling in computer...

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14 Homework #3 INDUSTRIAL CONTROLS REVIEW QUESTIONS 1. What is industrial control? 2. What is the difference between a continuous variable and a discrete variable? 3. Name and briefly define each of the three different types of discrete variables. 4. What is the difference between a continuous control system and a discrete control system? 5. What is feedforward control? 6. What is adaptive control? 7. What are the three functions of adaptive control? 8. What is the difference between an event-driven change and a time- driven change in discrete control? 9. What are the two basic requirements that must be managed by the controller to achieve real-time control?
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Unformatted text preview: 10. What is polling in computer process control? 11. What is an interlock? What are the two types of interlocks in industrial control? 12. What is an interrupt system in computer process control? 13. What is computer process monitoring? 14. What is direct digital control (DDC), and why is it no longer used in industrial process control applications? 15. Are programmable logic controllers (PLCs) more closely associated with the process industries or the discrete manufacturing industries? 16. What is a distributed control system? 17. What is the open architecture philosophy in control systems design?...
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