Submitted Papers and Preprints
- Chao Chen, Di Zhao, Wei Chen, Sei Zhen Khong and Li Qiu, ‘‘Phase of nonlinear systems,’’ submitted to IEEE Transactions on Automatic Control, 2021. arXiv:2012.00692
- Di Zhao, Chao Chen*, Kin Cheong Sou and Sei Zhen Khong, ‘‘Description and reduction of network asymmetry: A phase-rank approach,’’ IEEE Transactions on Automatic Control, conditionally accepted, 2025.
- Weihao Zhang, Chao Chen, Jianqi Chen and Di Zhao, ‘‘Angular safety analysis of interconnected systems,’’ submitted to Automatica, 2025.
Journal Papers
[J8]
Soft and hard scaled relative graphs for nonlinear feedback stability
Chao Chen, Sei Zhen Khong and Rodolphe Sepulchre
IEEE Transactions on Automatic Control, 2026. (Technical Note) [DOI]
Chao Chen, Sei Zhen Khong and Rodolphe Sepulchre
IEEE Transactions on Automatic Control, 2026. (Technical Note) [DOI]
[J7]
A cyclic small phase theorem
Chao Chen, Wei Chen, Di Zhao, Jianqi Chen and Li Qiu
IEEE Transactions on Automatic Control, vol. 71, no. 3, pp. 1676 - 1691, 2026. (Full Paper) [DOI]
Chao Chen, Wei Chen, Di Zhao, Jianqi Chen and Li Qiu
IEEE Transactions on Automatic Control, vol. 71, no. 3, pp. 1676 - 1691, 2026. (Full Paper) [DOI]
[J6]
The singular angle of nonlinear systems
Chao Chen, Di Zhao and Sei Zhen Khong
Automatica, vol. 181, art. 112515, 2025. (Regular Paper) [DOI]
Chao Chen, Di Zhao and Sei Zhen Khong
Automatica, vol. 181, art. 112515, 2025. (Regular Paper) [DOI]
[J5]
Feedback stability analysis via dissipativity with dynamic supply rates
Sei Zhen Khong, Chao Chen* and Alexander Lanzon
Automatica, vol. 172, art. 112000, 2025. (Regular Paper) [DOI]
Sei Zhen Khong, Chao Chen* and Alexander Lanzon
Automatica, vol. 172, art. 112000, 2025. (Regular Paper) [DOI]
[J4]
Robust stability and stabilizability conditions of time-delay systems against stochastic uncertainty
Jianqi Chen, Qi Mao, Di Zhao and Chao Chen
IEEE Transactions on Automatic Control, vol. 70, no. 6, pp. 4037 - 4044, 2025. (Technical Note) [DOI]
Jianqi Chen, Qi Mao, Di Zhao and Chao Chen
IEEE Transactions on Automatic Control, vol. 70, no. 6, pp. 4037 - 4044, 2025. (Technical Note) [DOI]
[J3]
Phase preservation of N-port networks under general connections
Jianqi Chen, Wei Chen, Chao Chen and and Li Qiu
IEEE Transactions on Automatic Control, vol. 70, no. 4, pp. 2346 – 2361, 2025. (Full Paper) [DOI]
Jianqi Chen, Wei Chen, Chao Chen and and Li Qiu
IEEE Transactions on Automatic Control, vol. 70, no. 4, pp. 2346 – 2361, 2025. (Full Paper) [DOI]
[J2]
Small gain and small angle conditions for feedback stability analysis of linear stochastic systems
Di Zhao, Chao Chen* and Jianqi Chen
IEEE Transactions on Automatic Control, vol. 69, no. 5, pp. 3349 – 3356, 2024. (Technical Note) [DOI]
Di Zhao, Chao Chen* and Jianqi Chen
IEEE Transactions on Automatic Control, vol. 69, no. 5, pp. 3349 – 3356, 2024. (Technical Note) [DOI]
[J1]
A frequency-domain approach to nonlinear negative imaginary systems analysis
Di Zhao, Chao Chen* and Sei Zhen Khong
Automatica, vol. 146, art. 110604, 2022. (Brief Paper) [DOI]
Di Zhao, Chao Chen* and Sei Zhen Khong
Automatica, vol. 146, art. 110604, 2022. (Brief Paper) [DOI]
Conference Papers
[C14]
Scaled relative graph separation for unbounded nonlinear systems
Chao Chen, Sei Zhen Khong and Rodolphe Sepulchre
Proc. 65th IEEE Conference on Decision and Control, accepted, 2026.
Chao Chen, Sei Zhen Khong and Rodolphe Sepulchre
Proc. 65th IEEE Conference on Decision and Control, accepted, 2026.
[C13]
A nonlinear negative imaginary theorem for feedback stability
Chao Chen, Qikai Sun, Sei Zhen Khong and Alexander Lanzon
Proc. 65th IEEE Conference on Decision and Control, accepted, 2026.
Chao Chen, Qikai Sun, Sei Zhen Khong and Alexander Lanzon
Proc. 65th IEEE Conference on Decision and Control, accepted, 2026.
[C12]
When polar decomposition meets phase: A historical reconsideration
Chen Chen, Chao Chen, Di Zhao and Jianqi Chen
Proc. 65th IEEE Conference on Decision and Control, accepted, 2026.
Chen Chen, Chao Chen, Di Zhao and Jianqi Chen
Proc. 65th IEEE Conference on Decision and Control, accepted, 2026.
[C11]
A time-domain condition for input-output feedback stability analysis of negative imaginary systems
Qikai Sun, Chao Chen, Sei Zhen Khong and Alexander Lanzon
Proc. 65th IEEE Conference on Decision and Control, accepted, 2026.
Qikai Sun, Chao Chen, Sei Zhen Khong and Alexander Lanzon
Proc. 65th IEEE Conference on Decision and Control, accepted, 2026.
[C10]
On the strictness of negative imaginariness for linear systems
Tianzhe Zhang, Chao Chen, Sei Zhen Khong and Alexander Lanzon
Proc. 65th IEEE Conference on Decision and Control, accepted, 2026.
Tianzhe Zhang, Chao Chen, Sei Zhen Khong and Alexander Lanzon
Proc. 65th IEEE Conference on Decision and Control, accepted, 2026.
[C9]
Safety verification of interconnected systems: An angular approach
Weihao Zhang, Chao Chen, Jianqi Chen and Di Zhao
Proc. 23rd IFAC World Congress, accepted, 2026.
Weihao Zhang, Chao Chen, Jianqi Chen and Di Zhao
Proc. 23rd IFAC World Congress, accepted, 2026.
[C8]
Graphical dominance analysis for linear Systems: A frequency-domain approach
Chao Chen, Thomas Chaffey and Rodolphe Sepulchre
Proc. 64th IEEE Conference on Decision and Control, Rio de Janeiro, Brazil, 2025, pp. 2720 – 2725. [DOI]
Chao Chen, Thomas Chaffey and Rodolphe Sepulchre
Proc. 64th IEEE Conference on Decision and Control, Rio de Janeiro, Brazil, 2025, pp. 2720 – 2725. [DOI]
[C7]
On phase in scaled graphs
Sebastiaan van den Eijnden, Chao Chen, Koen Scheres, Thomas Chaffey and Alexander Lanzon
Proc. 64th IEEE Conference on Decision and Control, Rio de Janeiro, Brazil, 2025, pp. 3595 - 3600. [DOI]
Sebastiaan van den Eijnden, Chao Chen, Koen Scheres, Thomas Chaffey and Alexander Lanzon
Proc. 64th IEEE Conference on Decision and Control, Rio de Janeiro, Brazil, 2025, pp. 3595 - 3600. [DOI]
[C6]
The Hilbert distance between LTI passive systems
Chao Chen and Rodolphe Sepulchre
Proc. 63rd IEEE Conference on Decision and Control, Milan, Italy, 2024, pp. 8138 – 8143. [DOI]
Chao Chen and Rodolphe Sepulchre
Proc. 63rd IEEE Conference on Decision and Control, Milan, Italy, 2024, pp. 8138 – 8143. [DOI]
[C5]
A cyclic small phase theorem for nonlinear systems
Chao Chen, Jianqi Chen, Di Zhao and Li Qiu
Proc. 63rd IEEE Conference on Decision and Control, Milan, Italy, 2024, pp. 4405 – 4410. [DOI]
Chao Chen, Jianqi Chen, Di Zhao and Li Qiu
Proc. 63rd IEEE Conference on Decision and Control, Milan, Italy, 2024, pp. 4405 – 4410. [DOI]
[C4]
A cyclic small phase theorem for MIMO LTI systems
Chao Chen, Wei Chen, Di Zhao, Jianqi Chen and Li Qiu
Proc. 22nd IFAC World Congress, Yokohama, Japan, 2023, pp. 1883 – 1888. [DOI]
Chao Chen, Wei Chen, Di Zhao, Jianqi Chen and Li Qiu
Proc. 22nd IFAC World Congress, Yokohama, Japan, 2023, pp. 1883 – 1888. [DOI]
[C3]
A nonlinear small phase theorem
Chao Chen, Di Zhao, Wei Chen and Li Qiu
Late Breaking Results of 21st IFAC World Congress, Berlin, Germany, 2020. [Link]
Chao Chen, Di Zhao, Wei Chen and Li Qiu
Late Breaking Results of 21st IFAC World Congress, Berlin, Germany, 2020. [Link]
[C2]
Nonovershooting regulation of an under-sensed and under-actuated linear inverted pendulum
Chao Chen, Di Zhao and Li Qiu
Proc. 16th International Conference on Control, Automation, Robotics and Vision, Shenzhen, China, 2020, pp. 784 – 788. [DOI]
Chao Chen, Di Zhao and Li Qiu
Proc. 16th International Conference on Control, Automation, Robotics and Vision, Shenzhen, China, 2020, pp. 784 – 788. [DOI]
[C1]
Control of an under-sensed and under-actuated linear inverted pendulum
Chao Chen, Di Zhao and Li Qiu
Proc. 57th Annual Conference of SICE, Nara, Japan, 2018, pp. 1301 – 1306. [DOI]
Chao Chen, Di Zhao and Li Qiu
Proc. 57th Annual Conference of SICE, Nara, Japan, 2018, pp. 1301 – 1306. [DOI]
Book Chapters
[B1]
Robust control against uncertainty quartet: A polynomial approach
Di Zhao, Chao Chen, Sei Zhen Khong and Li Qiu
Uncertainty in Complex Networked Systems, T. Basar, Ed. Cham, Switzerland: Birkhauser, 2018, pp. 149 – 178. [DOI]
Di Zhao, Chao Chen, Sei Zhen Khong and Li Qiu
Uncertainty in Complex Networked Systems, T. Basar, Ed. Cham, Switzerland: Birkhauser, 2018, pp. 149 – 178. [DOI]