2024 |
Daniel Liberzon / Hyungbo Shim Stability of Nonlinear Systems with Slow and Fast Time Variation and Switching: The Common Equilibrium Case Proceedings Article In: 2024 IEEE 63rd Conference on Decision and Control (CDC), IEEE, Milan, Italy, 2024. Abstract | Links | BibTeX | Tags: Non-Linear Systems, Switched system @inproceedings{nokey,In this paper we consider a class of nonlinear systems with two kinds of inputs: one is slowly-varying, the other is fast-varying and periodic, and both are only piecewise continuous. Under the assumption that the origin is a common equilibrium for all values of the input signals, we provide sufficient conditions under which this equilibrium is semi-globally exponentially stable. Our approach is based on considering the (partial) average system which averages out the fast variation but retains the slow variation, and which can be used to approximate the original system in a certain sense. The stability conditions involve the existence of a suitable Lyapunov function for this average system, along with a bound on the total variation of the slowly-varying input. |
Hyungbo Shim / Daniel Liberzon Further Results on Stability of Linear Systems with Slow and Fast Time Variation and Switching Proceedings Article In: HSCC24: HYBRID SYSTEMS: COMPUTATION AND CONTROL 2024, HSCC, Hong Kong, 2024. Links | BibTeX | Tags: Linear Systems, Switched system @inproceedings{nokey, |
2017 |
Zhaowu Ping / chanhwa Lee / Hyungbo Shim Robust Estimation Algorithm for Both Switching Signal and State of Switched Linear Systems Journal Article In: International Journal of Control, Automation and Systems, vol. 15, no. 1, pp. 95-103, 2017. Abstract | Links | BibTeX | Tags: Switched system, Switching signal estimation @article{PingLeeShim17,We present a hybrid-type observer for detecting the switching time and estimating both the active mode and the states of continuous-time switched linear systems. The systems under consideration have external inputs and are affected by unknown disturbances. In addition, noise corrupts the output measurements. In this setting the switching cannot be detected immediately, and thus, this paper presents a condition that relates the amount of delay to the sizes of the unknown disturbances/noises, the external inputs, and the states, and the strength of the observability. Once the condition is satisfied, the proposed observer and algorithm return the exact active mode and approximate state information of the switched system. A numerical example is also presented to show the performance of our algorithm.. |
List of English Publication
2024 |
Stability of Nonlinear Systems with Slow and Fast Time Variation and Switching: The Common Equilibrium Case Proceedings Article In: 2024 IEEE 63rd Conference on Decision and Control (CDC), IEEE, Milan, Italy, 2024. |
Further Results on Stability of Linear Systems with Slow and Fast Time Variation and Switching Proceedings Article In: HSCC24: HYBRID SYSTEMS: COMPUTATION AND CONTROL 2024, HSCC, Hong Kong, 2024. |
2017 |
Robust Estimation Algorithm for Both Switching Signal and State of Switched Linear Systems Journal Article In: International Journal of Control, Automation and Systems, vol. 15, no. 1, pp. 95-103, 2017. |