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| 1 | Disturbance Observer Based Control for Four Wheel Steering Vehicles With Model Reference显示文摘This paper presents a disturbance observer based control strategy for four wheel steering systems in order to improve vehicle handling stability. By combination of feedforward control and feedback control, the front and rear wheel steering angles are controlled simultaneously to follow both the desired sideslip angle and the yaw rate of the reference vehicle model.A nonlinear three degree-of-freedom four wheel steering vehicle model containing lateral, yaw and roll motions is built up, which also takes the dynamic effects of crosswind into consideration.The disturbance observer based control method is provided to cope with ignored nonlinear dynamics and to handle exogenous disturbances. Finally, a simulation experiment is carried out,which shows that the proposed four wheel steering vehicle can guarantee handling stability and present strong robustness against external disturbances. | Shuyou Yu Jing Wang Yan Wang Hong Chen | 2018 | IEEE/CAA Journal of Automatica Sinica2018，5，6： | 9 |
| 2 | Benefits of redundant channels in observer-based H∞ control for discrete-time switched linear systems显示文摘In this paper, the H∞ control problem is investigated for a class of discrete-time switched linear systems with modal persistent dwell-time(MPDT) switching. The redundant channels are considered to use in the data transmission to benefit the capability of overcoming the fragility of networks commonly configured by a single channel in the communication networks subject to random packet losses. In light of a new class of Lyapunov functions, the desired observer-based quasi-time-dependent controllers, which have less conservatism than the time-independent ones, are designed such that the resulting closed-loop system is exponentially mean-square stable with a guaranteed H_∞ disturbance attenuation performance. The MPDT can be minimized while ensuring the existence of such a class of observer-based controllers for a given period of persistence. An example of DC-DC boost converter is provided to verify the effectiveness of theoretical findings. | ZHU YanZheng ZHANG LiXian LIN WeiYang LI Zhan YU ShuYou | 2016 | Science China(Technological Sciences)2016，59，1： | 2 |
| 3 | Completed Laparoscopic Pancreaticoduodenectomy显示文摘 | Xiujun Cai Yifan Wang Hong Yu Xiao Liang Bin Xu Shuyou Peng | 2008 | Surgical Laparoscopy, Endoscopy & Percutaneous Techniques2008，，4： | 1 |
| 4 | Lap- aroscopic hepatectomy for hepatolithiasis: a feasibility and safety study in 29 patients 显示文摘 | Xiujun Cai Yifan Wang Hong Yu Xiao Liang Shuyou Peng | 2007 | Surg Endosc2007，21，： | 1 |
| 5 | Stabili- zing Model Predictve Cont- ml for LPV Systems Subject to Con- straints with Parameter-dependent Control Law 显示文摘 | YU Shuyou BOHM C CHEN Hong ALLGOWER | 2009 | IEEE Press2009，，： | 1 |
| 6 | Copper- and Silver-Mediated Cyanation of Aryl Iodides Using DDQ as Cyanide Source显示文摘新铜和有 DDQ 的芳基碘化物的调停银的 cyanation 作为氰化物来源被完成,向 nitriles 提供好收益。这条新途径代表导致芳基 nitriles 的一个安全方法。 | Kui Zheng Peng Yu Shuyou Chen Fen Chen Jiang Cheng | 2013 | Chinese Journal of Chemistry2013，31，4： | 0 |
| 7 | Preliminary Study of Oxidative Stress in Human Hepatocellular Carcinoma and Adjacent Normal Liver Tissues显示文摘OBJECTIVE The antioxidative system in human hepatocellular carcinoma was investigated. METHODS The activities of cytosolic catalase (CAT), superoxide dismu-tase, glutathione peroxidase (GSH-Px), glutathione S-tranferase and levels of reduced glutathione, total protein thiols and malondialdehyde were assayed in 10 cases of hepatocellular carcinoma and adjacent normal liver. RESULTS Hepatoma tissues showed higher activities of CAT, GSH -Px and lower content of total antioxidative capacity compared to adjacent normal liver tissue (P<0.05). CONCLUSION These findings suggest that the antioxidative defense-related enzymes and antioxidants are largely regulated in hepatoma cells. However, the mechanism which is not clear requires further investigation. | Hongwei Yu Chunying Chen Jiangxue Wang Yuxi Gao Guilong Deng Yingbin Liu Shuyou Peng Zhifang Chai | 2006 | Chinese Journal of Clinical Oncology2006，3，1： | 0 |
| 8 | Model predictive control for autonomous ground vehicles:a review显示文摘This paper reviews model predictive control(MPC)and its wide applications to both single and multiple autonomous ground vehicles(AGVs).On one hand,MPC is a well-established optimal control method,which uses the predicted future information to optimize the control actions while explicitly considering constraints.On the other hand,AGVs are able to make forecasts and adapt their decisions in uncertain environments.Therefore,because of the nature of MPC and the requirements of AGVs,it is intuitive to apply MPC algorithms to AGVs.AGVs are interesting not only for considering them alone,which requires centralized control approaches,but also as groups of AGVs that interact and communicate with each other and have their own controller onboard.This calls for distributed control solutions.First,a short introduction into the basic theoretical background of centralized and distributed MPC is given.Then,it comprehensively reviews MPC applications for both single and multiple AGVs.Finally,the paper highlights existing issues and future research directions,which will promote the development of MPC schemes with high performance in AGVs. | Shuyou Yu Matthias Hirche Yanjun Huang Hong Chen Frank Allgöwer | 2021 | Autonomous Intelligent Systems2021，1，1： | 0 |
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