检索结果-南通市图书馆

Operator-Based Robust Nonlinear Control for SISO and MIMO Nonlinear Systems With PI Hysteresis

在线全文

学校读者我要写书评

暂无评论

IEEE/CAA Journal of Automatica Sinica 2018年第2期5卷 523-530页

作者： Shuhui Bi Lei Wang shengjun wen Mingcong Deng School of Electrical Engineering University of Jinan Jinan 250022 China Shandong Provincial Key Laboratory of Automotive Electronics Technology Institute of Automation Shandong Academy of Sciences Qilu University of Technology (Shandong Academy of Sciences) Jinan 250014 China Department of Electronic and Information Engineering Zhongyuan University of Technology Zhengzhou 450007 China Department of Electrical and Electronic Engineering Tokyo University of Agriculture and Technology 2-24-16 Nakacho KoganeiTokyo 184-8588 Japan IEEE

In this paper, operator based robust nonlinear control for single-input single-output(SISO) and multi-input multi-output(MIMO) nonlinear uncertain systems preceded by generalized Prandtl-Ishlinskii(PI) hysteresis is considered respectively. In detail, by using operator based robust right coprime factorization approach, the control system design structures including feedforward and feedback controllers for both SISO and MIMO nonlinear uncertain systems are given, *** which, the controller design includes the information of PI hysteresis and its inverse, and some sufficient conditions for the controllers in both SISO and MIMO systems should be satisfied are also derived respectively. Based on the proposed conditions, influence from hysteresis is rejected, the systems are robustly stable and output tracking performance can be ***, the effectiveness of the proposed method is confirmed by numerical simulations.

关键词： Index Terms-Generalized PI hysteresis operator based robustright coprime factorization robust nonlinear control.

Si-Ho Tchou:life of a legend from physiology to psychology

在线全文

学校读者我要写书评

暂无评论

Protein & Cell 2019年第3期10卷 157-160页

作者： Wei Chen Xi Chen shengjun wen Department of Psychology Shaoxing UniversityShaoxing 312000China Department of Psychology The Education University of Hong KongHongkongChina College of Humanities Shanghai University of Finanee and EconomicsShanghai 200433China Department of Cognitive Neurology Hertie Institute for Clinical Brain ResearchUniversity of Tubingen72076 TubingenGermany

Why do the bees renounce sleep,the joys of honey,love,a and divine leisure?Why do they get so much pain and effort,and where does such a decisiveness come from?So the sex they are dying for must deserve this sacrifice,it must be more beautiful,happier,and do something they can not do?——Maurice Maeterlinck,Das Leben der Bienen,***-Ho Tchou(朱锡侯,1914-2000)was bom in the northeast part of Jilin Province,although his ancestry can be traced to Shaoxing,Zhejiang Provinee(Fig.1).

关键词： sleep honey 朱锡侯

Yu-Tao Loo and the development of neuropsychology in China

在线全文

学校读者我要写书评

暂无评论

Protein & Cell 2017年第7期8卷 473-476页

作者： Yanyan Qian Wei Chen shengjun wen School of Psychology Nanjing Normal University Nanjing 210097 China Department of Psychology Shaoxing University Shaoxing 312000 China Department of CognitiveNeurology Hertie Institute for Clinical Brain Research University of Tubingen 72076 Tubingen Germany

Yu-Tao Loo （1906-1985）（Fig. 1） was one of the Chinese neuropsychologists who acted as a pioneer of structure and functions studies of human cerebral cortex （Qian 2013） in China. Loo made great contributions in laying a solid foun- dation for neuroanatomy and physiological psychology in China. Meanwhile, his academic research broadened the horizons of this field. Besides, as a scientist, he wrote a series of popular-science articles and books to disseminate scientific knowledge. He was also a firm patriot and keen on political construction in China.

关键词：

Guest Editorial:Special issue on recent developments in advanced mechatronics systems

在线全文

学校读者我要写书评

暂无评论

CAAI Transactions on Intelligence Technology 2022年第4期7卷 547-548页

作者： Lin Meng Mingcong Deng Hongnian Yu shengjun wen Department of Electronic and Computer Engineering Ritsumeikan UniversityKusatsuJapan Department of Electrical and Electronic Engineering Tokyo University of Agriculture and TechnologyFuchuJapan School of Engineering and the Built Environment Edinburgh Napier UniversityEdinburghUK Zhongyuan-Petersburg Aviation College Zhongyuan University of TechnologyZhengzhouChina

This Special Issue will accept contributions describing innovative research and developments in‘Advanced Mechatronic Systems’,and will cover a wide range of disciplines,including robotics,automation and control systems,and new energy *** particularly welcomes those emerging methodologies and techniques which bridge theoretical studies and applications in advanced mechatronic *** quantitative engineering and science studies may be considered as well.

关键词： mec innovative automation

An improved bearing fault detection strategy based on artificial bee colony algorithm

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

CAAI Transactions on Intelligence Technology 2022年第4期7卷 570-581页

作者： Haiquan Wang wenxuan Yue shengjun wen Xiaobin Xu Hans-Dietrich Haasis Menghao Su Ping liu Shanshan Zhang Panpan Du Zhongyuan Petersburg Aviation College Zhongyuan University of TechnologyZhengzhouChina Faculty of Electrical and Engineering Zhongyuan University of TechnologyZhengzhouChina School of Automation Hangzhou Dianzi UniversityHangzhouChina Maritime Business and Logistics University of BremenBremenGermany

The operating state of bearing affects the performance of rotating machinery;thus,how to accurately extract features from the original vibration signals and recognise the faulty parts as early as possible is very *** this study,the one‐dimensional ternary model which has been proved to be an effective statistical method in feature selection is introduced and shapelet transformation is proposed to calculate the parameter of one‐dimensional ternary model that is usually selected by trial and *** XGBoost is used to recognise the faults from the obtained features,and artificial bee colony algorithm(ABC)is introduced to optimise the parameters of ***,for improving the performance of intelligent algorithm,an improved strategy where the evolution is guided by the probability that the optimal solution appears in certain solution space is *** experimental results based on the failure vibration signal samples show that the average accuracy of fault signal recognition can reach 97%,which is much higher than the ones corresponding to traditional extraction *** with the help of improved ABC algorithm,the performance of XGBoost classifier could be optimised;the accuracy could be improved from 97.02%to 98.60%compared with the traditional classification strategy.

关键词： fault diagnosis feature extraction improved artificial bee colony algorithm improved one-dimensional ternary pattern method shapelet transformation

Technical modifications & management innovations in exporting nuclear reactor projects

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Engineering Sciences 2009年第4期7卷 123-136页

作者： Mao Xiaoming Qin xijiu Ding Hu Xue Zhaoqun wen shengjun China Zhongyuan Engineering Corporation of China National Nuclear Corporation Beijing 100191 China

As a main channel for the foreign economic cooperation of China nuclear industry,China Zhongyuan Engineering Corporation (CZEC) has been constantly engaged in technical modifications and management innovations in its exporting nuclear reactor *** the implementation of heavy water research reactor contract in Algeria,CZEC had established a complete and adequate design standards system in compliance with the international standards,and made significant modifications to the reference reactor in the aspects of reactor power and reactor safety,solved quite some technical issues which affected the reactor technical *** modifications and improvements enabled the technical parameters,safety features,reactor multipurpose application to attain to the advanced level in the *** the 300 MWe PWR NPPs in Pakistan,safety features had been updated in line with upgrading regulatory *** design philosophy and technology application demonstrated CZEC's creation and innovation on basis of constant safety enhancement of nuclear power *** had also been made by CZEC in promoting China made equipment items and components exportation.

关键词： research reactor technical modifications management innovations safety

在线全文

学校读者我要写书评

暂无评论

BP神经网络在西服样板设计中的应用

纺织学报 2008年第9期29卷 113-116页

作者：吴俊温盛军华南农业大学艺术学院广东广州510642 中原工学院电子信息学院河南郑州450007

采用BP神经网络的方法,对西服样板设计进行研究。将西装成品规格尺寸作为输入参数,细部规格尺寸作为输出参数,逐点训练神经网络,研究其非线性映射关系,并利用神经网络的任意函数逼近功能来获得近似函数关系,建立西服样板设计的BP神经网... 详细信息

采用BP神经网络的方法,对西服样板设计进行研究。将西装成品规格尺寸作为输入参数,细部规格尺寸作为输出参数,逐点训练神经网络,研究其非线性映射关系,并利用神经网络的任意函数逼近功能来获得近似函数关系,建立西服样板设计的BP神经网络模型。仿真结果表明:运用人工神经网络进行西服样板设计,有较高的灵敏度,具有很好的应用价值。该研究为实现服装的3D款式造型系统自动生成2D样板,为智能化服装生产,提供了理论与技术参考。

关键词：西服纸样设计 BP神经网络函数逼近

在线全文

学校读者我要写书评

暂无评论

迟滞与蠕变耦合压电系统的建模及补偿方法

振动与冲击 2023年第7期42卷 25-32,53页

作者：温盛军李亮喻俊苏孟豪中原工学院彼得堡航空学院郑州450007

为了准确地描述压电驱动定位平台复杂的非线性特性,在经典Hammerstein结构模型基础上串联分数阶算子,提出了一种耦合迟滞、动力学和蠕变的非线性数学模型。其中该模型的蠕变、迟滞非线性特性分别采用分数阶算子和PI模型来描述;机械动力... 详细信息

为了准确地描述压电驱动定位平台复杂的非线性特性,在经典Hammerstein结构模型基础上串联分数阶算子,提出了一种耦合迟滞、动力学和蠕变的非线性数学模型。其中该模型的蠕变、迟滞非线性特性分别采用分数阶算子和PI模型来描述;机械动力学特性使用二阶离散传递函数表示。此外,考虑了耦合模型的参数辨识问题,并通过压电驱动定位试验平台对所提耦合模型进行了验证。在1~100 Hz的正弦波输入电压信号作用下,与不考虑蠕变特性的Hammerstein结构模型相比,该耦合模型在均方根误差指标降低了27%以上,相对误差指标下降了约50%。该试验结果充分表明了所提耦合模型的有效性。在模型建立的基础上设计了逆蠕变和迟滞模型对系统进行前馈补偿,并结合PID控制算法对系统的性能进行调节。仿真结果验证了该复合控制方案在低频和混合频率输入信号下具有良好的跟踪效果。

关键词：迟滞蠕变 PI模型分数阶算子自适应控制

Transformation of GbSGT1 gene into banana by an Agrobacterium-mediated approach

在线全文

学校读者我要写书评

暂无评论

Progress in Natural Science:Materials International 2007年第10期17卷 1241-1243页

作者： Li shengjun1, wen Ruiming2, Pei Xinwu1, Chen Shikai2, Li Weimin and Jia Shirong1(1. Biotechnology Institute, Chinese Academy of Agricultural Sciences, Beijing 100081, China 2. Xinyi Institute of Agricultural Science and Technology, Xinyi 523530, China) Biotechnology Institute Chinese Academy of Agricultural Sciences Beijing 100081 China Xinyi Institute of Agricultural Science and Technology Xinyi 523530 China

SGT1 is a homologue of the yeast ubiquitin ligase-associated protein. It controls some protein degradation and activates defense pathway in plants. Cotton GbSGT1 gene (Gossypium barbadense) has been isolated and characterized in previous work. In this study, the plant expression vector pBSGT1 with bar gene as a selection agent was constructed and transgenic banana was obtained via Agrobacterium-mediated transformation with the assistance of particle bombardment and screened with PCR and Basta spreading on banana plant leaves. Estimating of transgenic banana plants for resistance to Panama wilt is in progress.

关键词： transgenic banana Agrobacterium-mediated GbSGT1.