检索结果-内蒙古大学图书馆

作者： Wang, Yan Zhang, Yufeng Deng, Na Tianjin Key Laboratory for Control Theory and Applications in Complicated Systems Tianjin University of Technology Tianjin 300384 China School of Automation Engineering Tianjin University of Technology Tianjin 300384 China School of Environmental Science and Engineering Tianjin University Tianjin China

ISBN: (纸本)9781424450893

Combustion characteristics of the pyrolysis product from a municipal household garbage mixture with 9 typical components were studied by using a small-scale external heated fixed bed pyrolyser in a temperature ranged from 300°C to 700°C. The experimental results show that pyrolysis temperature has an effect on the elemental analysis contents and industrial analysis contents of the semi-coke, further impacting on the combustion characteristics of the semi-coke. The heating value of semi-coke decreases obviously as temperature increases, ranging from 24.7MJ/kg at 300°C to 20.99MJ/kg at 550°C. When pyrolysis temperature is over 550°C, the heating value of semicoke is changed slowly. © 2011 IEEE.

关键词： Municipal solid waste

来源：评论

学校读者我要写书评

暂无评论

Compound control for electro-hydraulic positioning servo system based on dynamic inverse model

引用

Jixie Gongcheng Xuebao/Journal of Mechanical engineering 2011年第10期47卷 145-151页

作者： Yao, Jianyong Jiao, Zongxia Huang, Cheng Science and Technology on Aircraft Control Laboratory Beihang University Beijing 100191 China School of Automation Science and Electrical Engineering Beihang University Beijing 100191 China

Electro-hydraulic positioning servo system is a typical nonlinear system, and usually suffers uncertain external disturbances which make the conventional controller fail to meet the high performance requirements. A compound controller based on the dynamic inverse model of system is proposed, which includes a feed-forward controller and a robust controller to improve system control accuracy and robustness respectively. The rules of robust controller are presented and online parameter estimation is given for the compound controller to adapt the system nonlinear characteristics. A case study is presented, and experimental results show that the system nonlinear parameters are estimated accurately and the proposed compound control can handle the external disturbances effectively and upgrade the tracking performance of the hydraulic system. © 2011 Journal of Mechanical engineering.

关键词： Robust control

来源：评论

学校读者我要写书评

暂无评论

The key points of inductive wear debris sensor

The key points of inductive wear debris sensor

引用

International Conference on Fluid Power and Mechatronics (FPM)

作者： Lei Han Wei Hong Shaoping Wang School of Automation Science and Electrical Engineering Beihang University Beijing China School of Automation Science and Electrical Engineering Science and Technology on Aircraft Control Laboratory Beihang University Beijing China

This review paper has presented several examples of inductive wear debris sensor. Many of these have important applications in industry. Thus, when monitoring the oil system which operates under extremely severe conditions and various features (size and type) need to detect, it is worth considering the use of inductive wear debris sensor. Based on the electromagnetic field analysis for the coil and particles, three structures of such sensors, classified by the number of coils, are available, and they all can detect, count or classify wear debris. However, the detectable particle size is mainly limited by the background noise. Accordingly, to enhance the sensor performance, the signal processing methods are necessary.

关键词： Coils Magnetic fields Monitoring Pollution measurement Contamination Magnetic flux density

来源：评论

学校读者我要写书评

暂无评论

Failure diagnosis of hydraulic lifting system based on multistage telescopic cylinder

Failure diagnosis of hydraulic lifting system based on multi...

引用

International Conference on Fluid Power and Mechatronics (FPM)

作者： Yang Miao Shaoping Wang School of Automation Science and Electrical Engineering Beihang University Beijing China School of Automation Science and Electrical Engineering Science and Technology on Aircraft Control Laboratory Beihang University Beijing China

Directing to the failure mechanism of hydraulic lifting system based on multistage telescopic cylinder, this paper establishes its failure modules and collaborative failure simulation platform. Through increasing the corresponding failure simulation modules, this paper can simulate the detailed failure mode and its performance, then provides the design modification. Application indicates that the proper alignment and the inappropriate bearing surface between two stages of multistage telescopic cylinder are main factors that should be focused in the design process. The failure simulation platform of hydraulic lifting system can realize the integrated failure mode and effect analysis although it is difficult to allocate the sensors.

关键词： Pistons Valves Solid modeling Sensors Power supplies Analytical models Vibrations

来源：评论

学校读者我要写书评

暂无评论

Fault-distribution-dependent reliable control for time-varying delay system

引用

控制理论与应用（英文版） 2011年第4期9卷 589-593页

作者： Zhou GU Jinliang LIU Lilong DU Engang TIAN School of Power Engineering Nanjing Normal University Nanjing Jiangsu 210042 China College of Information Science and Technology Donghua University Shanghai 201620 China Department of Automation North China Electric Power University Beijing 102206 China Institute of Information and Control Engineering Nanjing Normal University Nanjing Jiangsu 210042 China

This paper considers the problem of reliable control for continuous-time systems with interval time-varying delay. By introducing a random matrix, a new practical actuator fault model is established. Using the Lyapunov-Krasovskii approach, a sufficient condition for the existence of reliable controller is expressed by a linear matrix inequality（LMI）. An illustrative example is exploited to show the effectiveness, of the proposed design procedures.

关键词： Reliable control Stochastic actuator fault model Time-delay

来源：评论

学校读者我要写书评

暂无评论

Adative robust control of Electrical Load Simulator based on fuzzy logic compensation

Adative robust control of Electrical Load Simulator based on...

引用

International Conference on Fluid Power and Mechatronics (FPM)

作者： Nasim Ullah Shaoping Wang Jawad Aslam School of Automation Science and Electrical Engineering Beihang University Beijing China School of Automation Science and Electrical Engineering Science and Technology on Aircraft Control Laboratory Beihang University Beijing China

This paper proposes adaptive robust torque controller for Electrical Load Simulator considering the effect of extra torque as disturbance and nonlinear friction. Mathematical model of ELS is derived and the adaptive robust law is derived. To estimate extra torque and non linear friction we propose fuzzy logic system. LuGre friction model is used to validate the proposed scheme estimation. The stability of proposed controller with fuzzy compensator is derived using Lyapunov stability criteria and the adaptive law is derived. The validity of proposed controller is verified using computer simulations for estimation and compensation of friction and extra torque with torque tracking performance.

关键词： Torque Friction Actuators DC motors Mathematical model Load modeling Fuzzy logic

来源：评论

学校读者我要写书评

暂无评论

Failure diagnosis of high speed gear

Failure diagnosis of high speed gear

引用

International Conference on Fluid Power and Mechatronics (FPM)

作者： Fang Wang Shaoping Wang School of Automation Science and Electrical Engineering Beihang University Beijing China School of Automation Science and Electrical Engineering Science and Technology on Aircraft Control Laboratory Beihang University Beijing China

Directing to the failure of high speed gear pair, this paper investigates its failure mechanism. Based on the failure characteristics, this paper adopts the power spectrum and empirical mode decomposition to detect two types of gear tooth failures. Defects were intentionally seeded in two separate pinions to explore feasible approach to monitor the tooth condition in a high speed gear pair. The failure mechanisms, vibration mechanism of defected tooth are presented. The empirical mode decomposition is adopted to reveal the characteristics of pitting and broken tooth failure.

关键词： Gears Vibrations Fault diagnosis Acceleration Surface roughness Fatigue Rough surfaces

来源：评论

学校读者我要写书评

暂无评论

Adaptive mode switch of intelligent hydraulic power supply system

Adaptive mode switch of intelligent hydraulic power supply s...

引用

International Conference on Fluid Power and Mechatronics (FPM)

作者： Bochao Huang Shaoping Wang School of Automation Science and Electrical Engineering Beihang University Beijing China School of Automation Science and Electrical Engineering Science and Technology on Aircraft Control Laboratory Beihang University Beijing China

Replacing constant pressure variable flow pumps with intelligent pumps is the most effective approach to improve the efficiency of high pressure & high power aircraft hydraulic system. The crux of the matter is to regulate the output variables of pumps to meet system requirement via actively controlling the swash plate angle. This paper analyzes a typical flight profile to develop principles of mode switch and signal generation, and establishes a total system model to perform dynamic simulations. The result shows some acceptable fluctuation caused by impact in transient process of mode switch and signal change, which could be reduced further after optimization.

关键词： Artificial intelligence Valves Switches Aerospace control Aircraft

来源：评论

学校读者我要写书评

暂无评论

Optimization research of genetic neural network based on Scilab

Optimization research of genetic neural network based on Sci...

引用

2011 IEEE International Workshop on Open-Source Software for Scientific Computation, OSSC-2011

作者： Zhao, Baoyong Qi, Yingjian Tao, Xing School of Automation and Electrical Engineering University of Science and Technology Beijing Beijing 100083 China Science School Communication University of China Beijing 100024 China Beijing Research Center of Urban System Engineering Beijing 100089 China Key Laboratory of Advanced Control for Iron and Steel Process Ministry of Education China

ISBN: (纸本)9781612844930

Radial basis function (RBF) network is one of the significant neural networks. It has been used successfully in various fields. But in RBF network approximation algorithm, the initial value of the network weights, Gauss function center vector and broad-based vector is not easy to determine, and when these parameter choice is undeserved, RBF network approximation precision will decline and even the serious consequences of network spread will be produced. By using genetic algorithm in this paper, which can better realize RBF network parameter optimization, thereby increasing the accuracy of approximation. Scilab is open source software and has good simulation capabilities. Experiments using Scilab shows that the optimization method of genetic neural network is feasible and results are satisfied. © 2011 IEEE.

关键词： Genetic algorithms

来源：评论

学校读者我要写书评

暂无评论

Robot-assisted upper-limb progressive anti-resistance training and clinical experimental study

Robot-assisted upper-limb progressive anti-resistance traini...

引用

2011 IEEE International Conference on Robotics and Biomimetics, ROBIO 2011

作者： Xu, Guozheng Song, Aiguo Li, Huijun Cui, Jianwei Liang, Zhiwei Xu, Baoguo Pan, Lizheng Network Robot Labortory College of Automation Nanjing University of Posts and Telecommunications Nanjing China Jiangsu Province Key Laboratory of Remote Measuring and Control School of Instrument Science and Engineering Southeast University Nanjing China

ISBN: (纸本)9781457721373

The purpose of our study is to develop a new fuzzy adaptive impedance force supervisory control method to solve the problem where the training resistive force can not be real-time regulated with the recovery level of the impaired limb's muscle strength in the upper-limb progressive anti-resistance training. A hierarchical fuzzy adaptive force controller including high-level basal resistive force fuzzy regulator and low-level fuzzy impedance force controller is constructed. The high-level regulator is developed to obtain the basal resistive force for each training session based on the evaluation of the imparied limb's recovery level while the low-level controller is designed to further adjust the interactive force between the robot and impaired limb. Clinical experimental results on two recruited stroke patients verify the effectiveness and potentialities of the proposed therapy control strategy. © 2011 IEEE.

关键词： controllers

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：