3 papers
eess.SY2026
The Phantom of Davis-Wielandt Shell: A Unified Framework for Graphical Stability Analysis of MIMO LTI Systems
Ding Zhang, Xiaokan Yang, Axel Ringh +1
This paper presents a unified framework based on Davis-Wielandt (DW) shell for graphical stability analysis of multi-input and multi-output linear time-invariant feedback systems.…
eess.SY2025
A Cascade of Systems and the Product of Their -Symmetric Scaled Relative Graphs
Xiaokan Yang, Ding Zhang, Wei Chen +1
In this paper, we utilize a variant of the scaled relative graph (SRG), referred to as the -symmetric SRG, to develop a graphical stability criterion for the feedback interconn…
math.OC2024
Matrix Completion and Decomposition in Phase Bounded Cones
Ding Zhang, Axel Ringh, Li Qiu
The problem of matrix completion and decomposition in the cone of positive semidefinite (PSD) matrices is a well-understood problem, with many important applications in areas such…