3 papers
math.OC2026
Unimodal self-oscillations and their sign-symmetry for discrete-time relay feedback systems with dead zone
Kang Tong, Christian Grussler, Michelle S. Chong
This paper characterizes self-oscillations in discrete-time linear time-invariant (LTI) relay feedback systems with nonnegative dead zone. Specifically, we aim to establish existen…
math.OC2026
Tractable downfall of basis pursuit in structured sparse optimization
Maya V. Marmary, Christian Grussler
The problem of finding the sparsest solution to a linear underdetermined system of equations, often appearing, e.g., in data analysis, optimal control, system identification, or se…
math.OC2025
Self-sustained oscillations in discrete-time relay feedback systems
Kang Tong, Christian Grussler, Michelle S. Chong
We study the problem of determining self-sustained oscillations in discrete-time linear time-invariant relay feedback systems. Concretely, we are interested in predicting when such…