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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
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Direct digital control systems&Software Introduction DDC Structure The position algorithm The velocity algorithm
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
Two measure problems inVelocity algorithm • CONTROLLER DRIFT • Integral over shoot
Benefits of DDC • Improved Effectiveness Improved Operational Efficiency increased Energy Efficiency