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math.OC2024
Feedback Stability Under Mixed Gain and Phase Uncertainty
Jiajin Liang, Di Zhao, Li Qiu
In this study, we investigate the robust feedback stability problem for multiple-input-multiple-output linear time-invariant systems involving sectored-disk uncertainty, namely, dy…
math.OC2019
A Convex Approach to Frisch-Kalman Problem
Di Zhao, Anders Rantzer, Li Qiu
This paper proposes a convex approach to the Frisch-Kalman problem that identifies the linear relations among variables from noisy observations. The problem was proposed by Ragnar…