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Zhang, Wenqian (author), Dong, Wenhan (author), Lv, Maolong (author), Liu, Zongcheng (author), Zhou, Yang (author), Feng, Haoming (author)This work proposes a nonsingular adaptive fixed-time switching control method for a class of strict-feedback nonlinear dynamics subject to full state constraints. The peculiarity of this design lies in overcoming the singularity issue that typically appears in the existing backstepping-based fixed-time control methods caused by the iterative...journal article 2021
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Bian, Yuli (author), Dong, Liang (author), Liu, Z. (author), Zhang, Lezhu (author)Urban-industrial symbiosis (UIS) is an important system innovation via sectors integration, and has been widely recognized as a novel pathway for achieving regional eco-industrial development. Eco-efficiency, as a mature approach and indicator, offers an effective tool to uncover both the status and trends of such a transformation. However,...journal article 2020
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Zhang, Wenqian (author), Dong, Wenhan (author), Dong, Shuangyu (author), Lv, Maolong (author), Liu, Zongcheng (author)A novel scheme for disturbance observer is designed for an extended class of strict-feedback nonlinear systems with possibly unbounded, non-smooth, and state-independent compounded disturbance. To overcome these problems in disturbance observer design, the typical slide mode differentiators are improved by introducing hyperbolic tangent...journal article 2019