Summary Feedback Control (Main Take Away Points) (See also notes)

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Presentation transcript:

Summary Feedback Control (Main Take Away Points) (See also notes) Jack Stankovic Spring 2015

Highest Level Point A well defined methodology exists for FC in computer systems Provides a great thinking process Provides performance assessment Robust (effects of the physical) Sensitivity analysis

Model Your System A powerful, empirically based methodology exists System ID Difference equations Understand your system Models are strongly encouraged

Analyze Systems z-transforms and transfer functions Poles LTI SASO Non-linear systems SASO With or without control Sensitivity analysis

Design Controllers Root Locus – general/see all solutions Pole Placement Design – meet requirements P, PI, PID are the most common

Applicability CPS Congestion control Power control RT databases RT scheduling Etc.

Future/CPS Still many challenges Decentralized systems Open Systems (use predictive control) Heterogeneous Systems Hybrid Systems Interacting control loops Delayed or lost control messages/measurements Adaptive systems (run system ID on-line)