Reducing Transient Energy Growth in Shear Flows Using Sensor-Based Output Feedback Control
Abstract
This report documents outcomes of research supported under AFOSR Grant No. FA9550-19-1-0034: Reducing transient energy growth in shear flows using sensor-based output feedback control (January 1, 2019-December 31, 2021) monitored by Dr. Gregg Abate. The long-term objective of this work is to use feedback control to suppress sub-critical transition to turbulence, and thus reduce drag in systems of interest to the Air Force and DoD. The focus of this effort was to develop and use static output feedback control strategies to reduce transient energy growth (TEG) of flow perturbations, thus facilitating transition suppression. Specifically, three objectives related to controller synthesis were investigated: Objective 1: Robustly reduce transient energy growth (TEG) via static output feedback; Objective 2: Minimize the worst-case TEG via static output feedback; Objective 3: Facilitate controller synthesis via low-order control-oriented fluids models. Technical outcomes for each of these objectives are summarized in the ensuing chapters of this report.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 2022
- Accession Number
- AD1230451
Entities
People
- Maziar S. Hemati
Organizations
- Regents of the University of Minnesota