Frequency-Weighted Projective Controls for Large Scale System Design.
Abstract
This report proposes a controller design methodology for large-scale systems based on the integration of novel frequency-dependent weighting techniques with the projective controls approach. It is a two-stage methodology. First, eigenvalue sensitivity expressions are utilized to provide insight into the design of static and/or low-order dynamic compensators for a nominal plant model. The techniques which result from the application of these sensitivity expressions strengthen the projective controls approach as a control design methodology. One of the obtained results, which is of independent interest, provides a method for modifying the linear quadratic performance criterion to achieve arbitrary pole-placement along the real axis. The second design stage incorporates novel output frequency-weighting techniques allowing frequency domain issues, like unmodeled dynamics, to be addressed while parameterizing all such weightings which preserve the eigenvalues from the nominal solution obtained in the first stage of the design. Low-order, frequency-weighting expressions are developed along with the full-order weightings.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 1987
- Accession Number
- ADA177166
Entities
People
- Hal S. Tharp
Organizations
- University of Illinois Urbana–Champaign