I am currently a postdoctoral researcher at CERMICS, École nationale des ponts et chaussées advised by Amaury Hayat. I received the Ph.D. degree in Applied Mathematics (2025) at Fudan University in the School of Mathematical sciences, under the supervision of Zhiqiang Wang, and the joint supervision of Christophe Prieur (CNRS, Univ. Grenoble Alpes, Gipsa-lab). I received the B.S. degree in Applied Mathematics (2019) at Fudan University in the School of Mathematical sciences. I had the chance to have an invited stay at the Gipsa-lab in 2023 and 2024 (long visit).

My research interest focuses on the control theory of partial differential equations (PDE). From the perspective of control theory, my research specifically focuses on the controllability, stabilizability, and output regulation of PDE systems. In terms of the equations studied, my research interests include, but are not limited to, one-dimensional and multi-dimensional hyperbolic systems, beam equations, and related models.

Here is a CV.

Publications

Preprint

• Yubo Bai, Christophe Prieur, and Zhiqiang Wang, Finite-time output regulation for homogeneous quasilinear hyperbolic systems, submitted.

Journal articles

• Yubo Bai, Christophe Prieur, and Zhiqiang Wang, Finite-time output regulation for time-varying \(2\times2\) hyperbolic systems, IMA Journal of Mathematical Control and Information, vol. 42 (3), pp. dnaf024, 2025.
• Yubo Bai, Christophe Prieur, and Zhiqiang Wang, Finite-time output regulation for linear time-varying hyperbolic balance laws, SIAM Journal on Control and Optimization, vol. 63 (4), pp. 2427-2450, 2025.
• Yubo Bai, Christophe Prieur, and Zhiqiang Wang, Exact controllability for a Rayleigh beam with piezoelectric actuator, Systems & Control Letters, vol. 186, pp. 105759, 2024.
• Yubo Bai, Christophe Prieur, and Zhiqiang Wang, Stabilization of a Rayleigh beam with collocated piezoelectric sensor/actuator, Evolution Equations and Control Theory, vol. 13 (1), pp. 67-97, 2024.

Conference papers

• Yubo Bai, Christophe Prieur, and Zhiqiang Wang, Finite-time observer for a time-varying cascade of an ODE in a system of balance laws, IFAC-PapersOnLine, vol. 59 (8), pp. 137-142, 2025, 5th IFAC Workshop on Control of Systems Governed by Partial Differential Equations - CPDE 2025. Preprint
• Yubo Bai, Christophe Prieur, and Zhiqiang Wang, A note on controllability and non-controllability for a Rayleigh beam with piezoelectric actuator, SIAM Conference on Control and Its Applications (CT’23), Philadelphia (PA), USA, 2023. Preprint

Talks

• 5th IFAC Workshop on Control of Systems Governed by Partial Differential Equations (CPDE 2025), Beijing, China, Jun. 2025.
• 2ème Congrès SAGIP (minisymposium), Lyon, France, May 2024.

Contact

• Email: yubo.bai “at” enpc.fr; yubobai.acad “at” gmail.com
• Phone: +33 7 89 25 74 35
• Address: 6 - 8, Avenue Blaise Pascal, Cité Descartes — Champs-sur-Marne, 77455 Marne la Vallée, France