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

2. 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

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

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

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

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

7. 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)