1. Three Vignettes in mixed style
Distributed process control
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2. 3-Vignettes Plan management system Information system
Process control with plant management.
Information system
Five level layered hierarchy.
1: process measurement and control
2:process supervision for monitoring and controlling
3:Process management- computer based plant automation-reports, optimization guidance.
4,5: Plant and corporate management-cost accounting, inventory control, order processing , scheduling..
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3. Three vignettes in mixed style
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4. In the above model Layers 1-3 are object oriented
Layers 4-5 are conventional data repository model.
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5. Tuning parameters: gain, reset, derivative, alarm trip-points
Operating parameters: Current process value, target value, output and mode-automatic or manual
Tuning parameters: gain, reset, derivative, alarm trip-points
Configuration parameters: tag-name and I/O Channels
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6. Tuning parameters: gain, reset, derivative, alarm trip-points
Operating parameters: Current process value, target value, output and mode-automatic or manual
Tuning parameters: gain, reset, derivative, alarm trip-points
Configuration parameters: tag-name and I/O Channels
Templates
Algorithms
Communication services
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7. Layer 4 and 5: integrates conventional host computer and conventional database management.
Data collection facilities of level 3 and reporting facilities of level 2 provide process information as transactions processing functions –supports central data store.
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8. Rule based system
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9. Rule based system Pseudocode: code to be executed- knowledge base.
Interpretation engine: Rule interpreter
Control state of the interpretation engine: rule and data element
Current state of the program Working memory.
IT CALLS SET OF RULES WHOSE CONTROL RELATIONS ARE DETERMINED DURING EXECUTION BY THE STATE OF THE COMPUTATION It provides a virtual machine to support this model.
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10. A blackboard globally recast as an interpreter
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11. Black board
Solution is organized into application dependent hierarchies
Domain knowledge is partitioned into independent modules of knowledge that operate on knowledge within levels
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12. www.bookspar.com | Website for Students | VTU NOTES | QUESTION PAPERS | NEWS | RESULTS

13. www.bookspar.com | Website for Students | VTU NOTES | QUESTION PAPERS | NEWS | RESULTS