The singular angle of nonlinear systems

C Chen, W Chen, D Zhao, SZ Khong, L Qiu - arXiv preprint arXiv …, 2021 - arxiv.org
In this paper, we introduce an angle notion, called the singular angle, for stable nonlinear
systems from an input-output perspective. The proposed system singular angle, based on …

A Cyclic Small Phase Theorem

C Chen, W Chen, D Zhao, J Chen, L Qiu - arXiv preprint arXiv:2312.00956, 2023 - arxiv.org
This paper introduces a brand-new phase definition called the segmental phase for multi-
input multi-output linear time-invariant systems. The underpinning of the definition lies in the …

A Cyclic Small Phase Theorem for MIMO LTI Systems

C Chen, W Chen, D Zhao, J Chen, L Qiu - IFAC-PapersOnLine, 2023 - Elsevier
This paper introduces a brand-new phase definition called the segmental phase for multi-
input multi-output linear time-invariant systems. The underpinning of the definition lies in the …