Structured semidefinite programs for the control of symmetric systems

In this paper we show how the symmetry present in many linear systems can be exploited to significantly reduce the computational effort required for controller synthesis. This approach may be applied when controller design specifications are expressible as a semidefinite program. In particular, when the overall system description is invariant under unitary coordinate transformations of the state space matrices, synthesis semidefinite programs can be decomposed into a collection of smaller, uncoupled, and often repeated semidefinite programs.

• Type: Journal
• Year: 2008
• Where: AUTOMATICA
• Authors: Randy Cogill, Sanjay Lall, Pablo A. Parrilo
• Keywords: AUTOMATICA 2008, Controller Design Specifications, Semidefinite Programs, Unitary Coordinate Transformations