Data-driven estimation of the lower bounds of gain and phase margins

[摘要] In this paper, a data-driven method is proposed to estimate lower bounds of the gain and phase margins without the mathematical model of a plant. To estimate the stability margins, which are defined in the frequency domain, using input/output data, we describe lower bounds in the time domain. Then, we formulate an optimization problem to estimate a lower bound of each stability margin and propose an iterative data-driven algorithm to solve this problem. (c) 2023 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).

[发布日期] 2023-07-01

[效力级别]  Proceedings Paper

[关键词] SYSTEMS;CONTROLLERS;PASSIVITY