direct digital control systems &software
DESCRIPTION
Direct digital control systems &Software. Introduction DDC Structure The position algorithm The velocity algorithm. Analog process. Direct digital control. DDC. Centralized User Interface ·Dynamic, Precise Facility Control ·Coordination of Facility Systems Operation - PowerPoint PPT PresentationTRANSCRIPT
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Direct digital control systems&Software
IntroductionDDC Structure
The position algorithmThe velocity algorithm
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Analog process
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Direct digital control
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DDC
• Centralized User Interface• ·Dynamic, Precise Facility Control• ·Coordination of Facility Systems Operation• ·Speed and Reliability from Computational
Power• ·Optimizing Facility Diversity• ·Durability and Flexibility• ·Troubleshooting/Easing of maintenance• ·Trending and History Data Logging• ·Customized Energy Reporting
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DDC for chemical reactor
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DDC structure
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The Position algorithm
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The Velocity Algorithm
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Two-Position Control
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Two measure problems inVelocity algorithm
• CONTROLLER DRIFT
• Integral over shoot
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Effect of set point band in Velocity algorithm
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Benefits of DDC
• Improved Effectiveness
Improved Operational Efficiency
increased Energy Efficiency
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