Design of Robust Controllers: Frequency Domain Methods and their Non-Linear Extensions
Abstract
The research concerns H infinity control and focuses on substantially different parts of the subject, namely nonlinear systems, optimization theory and algorithms for frequency domain design and computer algebra tailored to systems and control research. For nonlinear plants, Helton-James made considerable progress on formulas for parameterizing all controllers. Also, for the very difficult measurement feedback problem they found a large class of 'singular controllers' which can actually be implemented. We established that they have excellent stable equilibria. Work on optimization integrated raw H infinity methods with semidefinite programming algorithms. We expanded our computer algebra methods for reducing complicated sets of equations to nice sets of equations.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 19, 1997
- Accession Number
- ADA332385
Entities
People
- J. W. Helton
Organizations
- University of California, San Diego