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Sporadic Event-Based Control using Path Constraints and Moments

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Author

  • Toivo Henningsson

Summary, in English

Control is traditionally applied using periodic sensing and actuation. In some applications, it is beneficial to use instead event based control, to communicate or make a change only when necessary. There are no known general closed form solutions to such event based control problems. We consider stationary event-based control problems with mixed continuous/discrete time dynamics and stochastic disturbances. The system is modelled by a set of path constraints, which are converted into constraints on trajectories’ moments up to some order N; upper and lower bounds on the control objective for any system that meets the constraints are derived using sum-of-squares techniques and convex semidefinite programming. Joint optimization of upper bound and controller parameters is non-convex in general; approaches to such controller optimization are investigated, including local optimization using bilinear matrix inequalities. Examples show that the bounds are significantly tighter than earlier results obtained using quadratic value functions.

Publishing year

2011

Language

English

Publication/Series

Proceedings of the 50th IEEE Conference on Decision and Control and European Control Conference

Document type

Conference paper

Topic

  • Control Engineering

Conference name

50th IEEE Conference on Decision and Control and European Control Conference, 2011

Conference date

2011-12-12 - 2011-12-15

Conference place

Orlando, Florida, United States

Status

Published

Research group

  • LCCC