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2011 International Conference on Advanced Materials and Computer Science(ICAMCS 2011)

作者： Kai MO Qiliang SUN Hong HE Da-Jian ZHANG Ming-Feng HOU Institute of Economic Reform Tianjin(China) Tianjin Key Laboratory for Control Theory and Application in Complicated Systems Tianjin University of Technology (china)

The data-acquisition of temperature is widely used in industrial control, household appliances, medical care, and other important areas often using the data acquisition. For industry, household appliances, and other unsuitable for the traditional wireless data acquisition situation, this paper presents a wireless system of data acquisition of temperature based on radio frequency, and the system can avoid a cable transmission's the inherent high-cost, long production cycle, the restricted number of transceiver devices such shortcomingsThis paper presents the principle, the major flow chart, features system which is mainly made up of MCU ATmega8 and RF chip n F905. Experiments show that this is the accurately and efficiently system of temperature data wireless acquisition and transmission.

关键词： wirless transmission sensor MCU embedded system

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Analysis of Smart Antenna Interference Suppression Base on LMS Improved Algorithm

Analysis of Smart Antenna Interference Suppression Base on L...

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2011 International Conference on Advanced Materials and Computer Science(ICAMCS 2011)

作者： Hong He Cong Cong Wu Tong Yang Lin He Dan Li Tianjin Key Laboratory for Control Theory and Application in Complicated Systems Tianjin University of Technology (china) Tianjin Mobile Communications Co. Ltd

Smart antenna technology can increase channel capacity, improve spectrum efficiency and enlarge cover area by using its spatial diversity ability, which greatly improve system performance. A least mean squares(LMS) is posed for the smart antenna adaptive interference suppression system based on the training sequence. Also, the least mean square(LMS) and least squares(RLS) algorithm are proposed for the design and simulation about interference suppression and compare and analyze the result which can prove the effectiveness about algorithm in TD-SCDMA *** to the results, the new method with a faster convergence speed, which doesn`t matter with interference environments, is better than LMS.

关键词： Smart antenna technology RLS LMS interference

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The application of BP Neural Network based on improved PSO in BF temperature forecast

The application of BP Neural Network based on improved PSO i...

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International Conference on Electrical and control Engineering (ICECE)

作者： Hongjun Wang Dexiong Li Zhuoqun Zhao Huijuan Qi Lina Liu Tianjin Key Laboratory for Control Theory & Applications in Complicated Systems Tianjin University of Technology Tianjin China Shijiazhuang Institute of Railway Technology Shijiazhuang China HNV College of Mechanical and Vehic Engineering Changsha China

The BP network has the disadvantages such as low learning efficiency, low speed of convergence, easily falling into the local minimum state, poor ability to adapt, ect. For PSO algorithm, it is fast for convergence, especially at the initial stage, simple for the computing, and is easy to implement. Compared with the genetic algorithms, it does have not the complex operations of hybrid codecs, mutation, so it is a good optimization algorithm. However, PSO algorithm also has some shortcomings it is more and more slow for convergence rate at the late evolution of the algorithm. In this paper, a new BP Neural Network based on improved Particle Swarm Optimization (PSO) is proposed. The convergence speed of this algorithm and the capacity of searching global extremum is increased through adjusting the adaptive capacity of learning factor. The simulation results illustrate that the improved PSO is superior to the standard BP algorithm and particle swarm optimization.

关键词： Particle swarm optimization Blast furnaces Iron Biological neural networks Temperature measurement Neurons Convergence

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The Manipulability and Optimized Configuration of Tracked Mobile Manipulator

The Manipulability and Optimized Configuration of Tracked Mo...

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2011 International Conference on Computer Science and Information Technology(ICCSIT 2011)

作者： Pengmei Dong Xinhua Zhao School of Mechanical Engineering Tianjin University of Technology The Tianjin Key Laboratory for Control Theory & Application in Complicated Systems and the School of Mechanical Engineering Tianjin University of Technology

ISBN: (纸本)9781510811249;1510811249

Based on the LeoBot-Edu-Sarm tracked mobile manipulator, first build the unified kinematics model of mobile manipulator based on generalized Jacobian matrix, then calculate the mobile manipulator, and analysis its optimized configuration, and make simulations by using Matlab. These all are the basement of the further research such as path planning and intelligent control.

关键词： tracked mobile manipulator, 6-degree-freedom manipulator, kinematic modelling, manipulability, optimized configuration

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高速旋转式温度变送器的研究

高速旋转式温度变送器的研究

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2012年中国仪器仪表学术、产业大会

作者： He Hong 何宏 Fang Haiping 房海萍 Zhang Zhihong 张志宏 Tianjin Key Laboratory for Control Theory and Application in Complicated Systems Tianjin University 天津理工大学天津市复杂系统控制理论及应用重点实验室天津300384 Tianjin broadcast and Television development company Ltd Tianjin 300072 China 天津广播电视发展有限公司天津300072

高速旋转式温度变送器是应用在化纤纺丝中的热辊温度监控系统，针对高速旋转的信号线不能直接引线出去和控制导丝盘表面温度均匀性的问题，本设计采用一套转子、定子信号转换装置，它们两个为大小相同的中空圆盘，其中数字传感器与数字... 详细信息

高速旋转式温度变送器是应用在化纤纺丝中的热辊温度监控系统，针对高速旋转的信号线不能直接引线出去和控制导丝盘表面温度均匀性的问题，本设计采用一套转子、定子信号转换装置，它们两个为大小相同的中空圆盘，其中数字传感器与数字控制接口回路能极大的消除电路噪声和飘移，转子将数字信号以无线方式耦合到定子上，它们之间的9 mm的大间隙能避免摩擦与碰撞，定子连接在一个可移动的外壳内，能适应各类不同马达的操作环境，能容纳l至4个RTD传感器，能应用于化纤行业中各式不同的纺丝机。

关键词：化纤纺丝热辊监控设备高速旋转式温度变送器系统结构电路设计

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Study of TD-LTE Base Station Co-existence with TD-SCDMA Base Station

Study of TD-LTE Base Station Co-existence with TD-SCDMA Base...

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2011 International Conference on Advanced Materials and Computer Science(ICAMCS 2011)

作者： Hong He Hong Dong Tong Yang Lin He Cong-cong Wu Tianjin Key Laboratory for Control Theory and Application in Complicated Systems Tianjin University of Technology (china) Scholl of Computer and Communication Engineering Tianjin University of Technology (china) Tianjin Mobile Communications Co. Ltd

This paper analyzes the reasons which cause the interferences between TD-LTE and TD-SCDMA systems and studies the types of interferences between the two systems in the same area. It gets the additional isolation requirements of coexistence and co-location of TD-LTE/TD-SCDMA base stations with deterministic method which bases on the minimum coupling loss. At last, some proposals for solving the interferences are given.

关键词： TD-LTE TD-SCDMA co-existence deterministic method

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A Roller-Loading Bioreactor System for Researching Cartilage Mechanobiology

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Procedia Environmental Sciences 2011年 8卷 197-201页

作者： Junxia Gao Chunqiu Zhang Haiying Liu Lilan Gao Minglin Sun Xin Dong School of Mechanical Engineering Tianjin University of Technology.Tianjin Key Laboratory for Control Theory & Applications in Complicated Industry SystemsTianjin300384 China Department of Orthopaedics Affiliated Hospital of Chinese People's Armed Police Force Tianjin 300162 China Department of mechanics College of Mechanical Science and Engineering Jilin University Changchun 130025 China

With the aging of human society and the rapid development of transportation industry, the disease rates of bone and joint are also in constant increase, making the biological healing and regeneration of articular cartilage as a core issue of joint surgery in basic and clinical. In general, the regeneration capacity of articular cartilage injury difficult to selfrepair is considered to be limited. At present, many new technologies and methods have been used for clinical treatment, but it only can relieve the pain of the patients. Human knee joint has two main movement patterns: rolling and sliding. Rolling, as a typical representative of the articular cartilage, is very similar to the mechanical environment in vivo. Accordingly, we first proposed and developed this rolling depression loading device with perfusion system for the mechanobiology researching on in vitro articular cartilage, which includes rolling control system, compression adjusting system and circulating perfusion system. The innovation of the biological reactor is the combination of the rolling loading system and circulation of grouting system. The roll controlling system is achieved by roller rolling back and forth through stepper motor driving screw rod. The compressive system could produce uniform, controlled compressions by relatively sliding of two wedge blocks. The circulating perfusion system is mainly finished by controlling the peristaltic pump. It can provide an environment which is closer to the normal physiological condition of articular cartilage. Rolling depression loading is useful to clarify the pathogenesis of osteoarthritis and apply biomechanical factors to prevent and treat osteoarthritis and repair cartilage. This device is small enough to work in the general culture box, and we will test it with biological experiment in future.

关键词： Rolling depression loading Mechanobiology Vitro cartilage

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Parameters mensuration of metal powder flow in laser cladding

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Guangxue Xuebao/Acta Optica Sinica 2011年第SUPPL.1期31卷

作者： Yang, Nan Dong, Huajun Tianjin Key Laboratory for Control Theory and Applications in Complicated Systems Tianjin University of Technology Tianjin 300384 China School of Mechanical Engineering Dalian Jiaotong University Dalian Liaoning 116028 China

In laser cladding, the movement of the metal powder particles influences the cladding results directly. However, the movements of the metal powder particles are too hard to measure because the average diameter of the particles is about 50 μm and the movement behavior is very complex (collision of each other). The image process method based on digital particle image velocimetry (DPIV) technology is used to recognize the most particles. By this means, two images of the particle stream with a time interval are provided to determine the displacements of particles. Therefore, the velocity-vector field of the whole powder stream is obtained. Then, the convergence angle and the divergence angle of the powder flow can be measured by the velocity vectors, and the convergence region can be determined by the region of the maximum intensity of light. Results show that DPIV meets the needs of laser cladding and plays the role of guidance.

关键词： Laser cladding

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Research on grid-based wind farm modeling

Research on grid-based wind farm modeling

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2010 IEEE International Conference on Intelligent Computing and Intelligent systems, ICIS 2010

作者： Ma, You-Jie Liu, Yue Zhou, Xue-Song Yang, Hai-Shan Tianjin University of Technology Tianjin Key Laboratory for Control Theory and Applications in Complicated Systems Tianjin China

ISBN: (纸本)9781424465835

Wind power generation develops very fast in every country as a kind of important regenerative energy. The modeling of wind farm is the foundation of controlling and optimizing it. This paper introduced in detail the mathematics model at present and modeling methods in this field. What's more, it also outlined the factors what should be considered during the modeling process. At last the trend of wind farm modeling was proposed according to the development of wind generation and relative techniques. ©2010 IEEE.

关键词： Wind turbines

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Wind farm modeling based on BP neural network

Wind farm modeling based on BP neural network

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2010 2nd World Non-Grid-Connected Wind Power and Energy Conference, WNWEC 2010

作者： Ma, Youjie Liu, Yue Zhou, Xuesong Yang, Haishan Tianjin University of Technology Tianjin Key Laboratory for Control Theory and Applications in Complicated Systems Tianjin China

ISBN: (纸本)9781424489213

Wind farm modeling is an important research topic, but the traditional mechanism modeling method is difficult to get accurate models. However, performance of the neural network model is superior for identification and approximation of complex nonlinear systems. Especially, the BP network has been widely and successfully used in the engineering field. This paper gives a brief introduction to the BP network, and the network model is used for modeling of wind farms to prove the feasibility of BP model in the field of wind power. © 2010 IEEE.

关键词： Neural networks

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