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Sparsity-Promoting Optimal Controller Design

About this Digital Document

Considering the class of linear time-invariant (LTI) systems and utilizing the various mathematical tools, for diverse scenarios, we design sparsity-promoting feedback controllers while attaining a reasonable performance loss. Diverse scenarios can be classified as follows: (i) feedback controller sparsification subject to attain a similar frequency behavior for the case without/with parametric uncertainty (Chapters 2 and 4) (ii) improvement on sparsity in time domain in addition to sparsity promotion in feedback controller (Chapters 3 and 8) (iii) sparse feedback controller design for uncertain time-delay systems (Chapter 5) (iv) row-column (r, c)-sparse feedback controller design (Chapter 6) (v) feedback controller sparsification for large-scale systems (Chapters 7 and 9). Sparsity promotion in feedback controller is done via several techniques including l1-relaxation, a notion of non-fragility, and quasi-norms. Sparsity improvement in time domain is obtained via periodic time-triggered and self-triggered control. In Chapters 2, 3, 4, 5, and 6, the non-convexity arisen by Lyapunov stability condition is handled utilizing the bi-linear rank penalty technique. In Chapters 7 and 9, stability is provided by means of continuity of maximum real part of eigenvalue of the closed-loop system. In Chapter 8, stability is imposed by a performance-based condition which consists of a quadratic cost-to-go and a Lyapunov function.

Full Title
Sparsity-Promoting Optimal Controller Design
Contributor(s)
Thesis advisor: Motee, Nader
Publisher
Lehigh University
Date Issued
2018-05
Language
English
Type
Form
electronic documents
Department name
Mechanical Engineering
Digital Format
electronic documents
Media type
Creator role
Graduate Student
Identifier
1044864310
https://asa.lib.lehigh.edu/Record/10944544
Bahavarnia, . M. (2018). Sparsity-Promoting Optimal Controller Design (1–). https://preserve.lehigh.edu/lehigh-scholarship/graduate-publications-theses-dissertations/theses-dissertations/sparsity
Bahavarnia, MirSaleh. 2018. “Sparsity-Promoting Optimal Controller Design”. https://preserve.lehigh.edu/lehigh-scholarship/graduate-publications-theses-dissertations/theses-dissertations/sparsity.
Bahavarnia, MirSaleh. Sparsity-Promoting Optimal Controller Design. May 2018, https://preserve.lehigh.edu/lehigh-scholarship/graduate-publications-theses-dissertations/theses-dissertations/sparsity.