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Your search keyword '"Yu, Zhenning"' showing total 3 results
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3 results on '"Yu, Zhenning"'

1. An Efficient Momentum Framework for Face-Voice Association Learning

Author

Qiu, Yuanyuan, Yu, Zhenning, Gao, Zhenguo, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Liu, Qingshan, editor, Wang, Hanzi, editor, Ma, Zhanyu, editor, Zheng, Weishi, editor, Zha, Hongbin, editor, Chen, Xilin, editor, Wang, Liang, editor, and Ji, Rongrong, editor

Published
2024
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2. Design of a new Robot Operating System-MATLAB-based autonomous robot system and trajectory tracking experiment.

Author

Yu, Zhenning, Ge, Fengxiang, and Wong, Seng Fat

Subjects
ROBOT design & construction, AUTONOMOUS robots, MOBILE robots, DRONE aircraft, SPACE vehicles, LIE algebras, AUTONOMOUS vehicles
Abstract

The trajectory tracking performance of an actual robot is usually used as an important standard to evaluate a nonlinear controller algorithm. The aim of this article is to design a new experimental robot system based on the Robot Operating System-MATLAB framework. To validate the performance, a nonlinear tracking controller includes the following features. Firstly, the surface robot model is in Lie algebra S O (3) format, which keeps the potential of cooperation control between space vehicles. Secondly, the nonlinear controller has good robustness under unknown disturbances. Thirdly, the control algorithm focuses on the practical robot, Turtlebot2. The robot system experimental results demonstrate the effectiveness of the proposed controller for trajectory tracking under unknown disturbance. The controller's potential applications include autonomous robots for indoor examination, extreme condition rescuing, and cooperation between unmanned aerial vehicle and unmanned surface vehicle autodrives. [ABSTRACT FROM AUTHOR]

Published
2024
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3. Ring-Opening Polymerization of α-Diazo Lactones: Access to Diazo-Containing Polyesters and Their Post-Polymerization Modifications

Author

Yu, Lefei, Wang, Yisong, Zhou, Qi, Wu, Xiaotong, Yu, Zhenning, Xu, Yan, Li, Zi-Chen, and Wang, Jianbo

Abstract

The properties of polyesters can be enhanced by the introduction of various functional groups, while transformations of a diazo group via a carbene intermediate provide efficient approaches for functional group introduction. We herein report the first ring-opening polymerization (ROP) of 5, 6, and 7-membered α-diazo lactones using t-BuOK as the initiator. The diazo groups can be well tolerated in the polymerization condition, leading to stable, diazo-containing polyesters that can be readily isolated and characterized. Post-polymerization transformations of the diazo groups, including [1,2]-hydrogen migration, Si–H insertions, and S–H insertions, further provide polyesters that are nontrivial to access. Further, the introduction of diazo groups generally increases the ring strain of lactones and alters their polymerizability, which is more pronounced for α-diazo γ-butyrolactone. The ROP of α-diazo δ-valerolactone generates a new type of diazo-containing polyesters that can be depolymerized upon heating.

Published
2024
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