A variable-barrier-function-based prescribed finite-time bounded-H∞ reinforcement learning optimal tracking control strategy without dependence on initial condition. - Ying Liu; Xiaohua Li; Songnan Zou; Hui Liu; Yang Liu (J. Frankl. Inst., 2024)

Safe tracking control based on a secure boundary protection method for nonlinear systems with unknown initial tracking condition. - Songnan Zou; Xiaohua Li; Yang Liu (Int. J. Syst. Sci., 2024)

Prescribed finite-time safe tracking control based on secure boundary protection method for nonlinear systems with unknown control gains. - Songnan Zou; Xiaohua Li (Int. J. Control, 2025)