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IEEE International Conference on Mechatronics and Automation

作者： Lijie Wang Zhen Zhou Yong Qin Jianying Guo Bin Niu College of Measure-Control Technology and Communication Engineering Harbin University of Science and Technology Harbin Heilongjiang China

During production or commercialization of fine iron powder, water content is the most important parameter for evaluating and controlling the fine iron powder properties. In order to improve the portability, operability, and speed of the water determination and to reduce testing cost, a new method to quickly detect the water content in fine iron powder using capacitance type sensor is put forward. The basic principle and characteristics of this measuring technique are examined. Structure and testing circuit for the capacity sensor are designed with parameters optimized through experimental research. A mathematical model to correlate water content to the capacitance is proposed. The present work had laid the foundation for developing an utility-type fast detecting device for water content in fine iron powder which can be adopted in real-time monitoring for processing or trading of fine iron powder.

关键词： Iron Powders Circuit testing Capacitance Capacitive sensors Sensor phenomena and characterization Production Commercialization Water Costs

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Adaptive trajectory tracking control of two-wheeled self-balance robot

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High technology Letters 2009年第1期15卷 38-43页

作者： Qin, Yong Zang, Xizhe Wang, Xiaoyu Li, Tian Zhao, Jie Robotics Institute Harbin Institute of Technology Harbin 150001 China Measure-control Technology and Communication Engineering Harbin University of Science and Technology Harbin 150080 China

Wheeled mobile robot is one of the well-known nonholonomic systems. A two-wheeled self-balance robot is taken as the research objective. This paper carried out a detailed force analysis of the robot and established a non-linear dynamics model. An adaptive tracking controller for the kinematic model of a nonholonomic mobile robot with unknown parameters is also proposed. Using control Lyapunov function (CLF), the controller's global asymptotic stability has been proven. The adaptive trajectory tracking controller decreases the disturbance in the course of tracking control and enhances the real-time control characteristics. The simulation result indicated that the wheeled mobile robot tracking can be effectively controlled. Copyright © by High technology Letters Press.

关键词： Asymptotic stability

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Design of Data Collecting Module Based on RTL8019AS

Design of Data Collecting Module Based on RTL8019AS

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2009 9th International Conference on Electronic measurement & Instruments(第九届电子测量与仪器国际会议 ICEMI'2009)

作者： Jingwei Dong Dongwei Fei Ting Lu College of Measure-control Technology &Communication Engineering Harbin Univ.of Sci.& Tech..Harbin 1 College of Measure-control Technology &Communication Engineering Harbin Univ.of Sci.& Tech..Harbin 1

ISBN: (纸本)9781424438631;9781424438624

With the improvement of the capability of the internet and spread of its overcastting area,it is possible to transmit industrial field data in a long distance on the Internet and display them on a remote PC. And controlling field data collection on the internet is a great improvement for data sampling devices. Based on embedded processor LPC2100 and Ethernet interface controller RTL80/9AS. hardware of data collecting module is designed in this paper. In the software design of the module,embedded real time operating system,uC/OS-If,is transplanted into the LPC22I0. And the TCP/IP protocol is realized based on sOCKET API provide by ZLG/IP. The module can collect 8-channel analog signals in timing;transmit the collecting data to the Internet on the protocol of TCP/IP;and realize the long-distance transmitting of field industrial data on the Internet. The hardware diagram and main part circuit is given in details. The flowcharts of software design illustrate the procedure of programming.

关键词： data collecting LPC2210 RTL8019AS TCP/IP.

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A NEW APPROACH OF DYNAMIC BLOOD PRESSURE measureMENT BASED ON THE TIME DOMAIN ANALYSIS OF THE PULSE WAVE

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AIP Conference Proceedings 2009年第1期1159卷 195-200页

作者： Su Zimei Xu Wei Yu Hui Du Fei Wang Jicun Xu Kexin aSchool of Measure‐control Technology and Communication Engineering Harbin University of Science and Technology Harbin China bFaculty of Engineering and Physical Sciences University of Surrey UK cDept. of Biomedical Engineering Tianjin University Tianjin China

In this study the pulse wave characteristics were used as a new approach to measure the human blood pressure. Based the principle of pulse wave and theory of the elastic vascular, the authors analyzed the characteristic of the pulse waveforms and revealed the characteristics points which could be used to represent the blood pressure. In this investigation the relevant mathematical feature was used to identify the relationship between the blood pressure and pulse wave parameters in a more accurate way. It also provided an experimental basis to carry out continuing non‐invasive blood pressure monitoring using the pulse wave method.

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Analysis on influence of image quality for errors of CCD mosaics technology

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Yi Qi Yi Biao Xue Bao/Chinese Journal of Scientific Instrument 2009年第SUPPL.期30卷 115-119页

作者： Yang, Ling School of Measure-Control Technology and Communication Engineering Harbin University of Science and Technology Harbin 150040 China

Present application status of CCD mosaics is introduced the error type which the technology of CCD mosaic produced is analyzed. A model which can analyze influence for overlap error of CCD mosaics to image quality is built. Modulation transfer function (MTF) is used as evaluating indicator which analyzes the influences of overlap error linear error and coplane error. The emulation produced that the three kinds of error influenced the image quality linear error influence is more at one direction with the same deflection angle coplane error influence decrease with the increasing of F number. Overlap error influenced image quality of adjacent of CCD edge and reduction pixel size can decrease the influence.

关键词： Errors

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Distribution of combustible gas alarm based on embedded Ethernet technology

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Journal of Harbin Institute of technology(New Series) 2008年第2期15卷 220-223页

作者：丁喜波张俊杰王洋 Space Optics Research Center School of AstronauticsHarbin Institute of Technology College of Measure-control Technology & Communication Engineering Harbin University Science and Technology Heilongjiang Provincial Institute of Measurement and Verification

One kind of combustible gas alarms based on industrial Ethernet was designed to prevent the gas leakage in industrial production sites, The alarm adopted the high performance microprocessor LPC2214 as the main chip. The embedded operating system μC/OS-Ⅱand TCP/IP protocol stack uIP running on LPC2214 constitute a development platform of application of the combustible gas alarm, The test shows that it can automatically and continuously detect combustible gas in industrial production sites in several positions;it can give out sound-light alarm and take protective measures immediately against the gas leakage; and it can send the detected data to PC through the Ethernet interface to realize the remote detection. The designed project provides a reference to design industrial devices based on industrial Ethernet

关键词： industrial Ethernet combustible gas alarm embedded system

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Kind of simplified algorithm for multi-fault test generation

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Dianji yu Kongzhi Xuebao/Electric Machines and control 2008年第3期12卷 348-352页

作者： Wu, Li-Hua Li, Tao Zou, Hai-Ying Wang, Peng College of Measure-Control Technology and Communication Engineering Harbin University of Science and Technology Harbin 150040 China

Since there are a lot of exclusive OR operations in Boolean difference algorithm, especially in solving high-order difference equation, a kind of test generation simplified method with constraint conditions is proposed. By analyzing the Boolean difference algorithm,the result obtained was that Boolean functionchanges with variables, so Boolean difference equations can be expressed into identity. To make faults propagate to output, the constraint conditions should be put, so test patterns can be obtained only by solving the identity and constraint conditions without exclusive OR operations in this algorithm. By examples, it has been proved that simplified algorithm is correct and simple, and it is verified that test patterns can detect given faults by VB (Visual Basic) simulation.

关键词： Logic circuits

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PdPc-PANI modified SAW sensor and phosphorous-containing toxic gas detection

Pan Tao Ti Hsueh Pao/Chinese Journal of Semiconductors

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Pan Tao Ti Hsueh Pao/Chinese Journal of Semiconductors 2008年第5期29卷 998-1002页

作者： Shi, Yunfen Shi, Yunbo Sun, Mojie Feng, Qiaohua School of Chemical Engineering Northeast Dianli University Jilin 132012 China College of Measure-Control Technology and Communication Engineering Harbin University of Science and Technology Harbin 150080 China

Aimed at the problem of quickly detecting phosphorus-containing toxic gas, we used home-made hybrid PdPc-PANI as the material for sensitive film and designed a binary channel SAW sensor. We expound the basic principle of the sensor and deduce that when using organic film as the intermediate medium of channel, different frequency output Δf was superimposed by a mathematical model using the two mechanisms of physical chemistry adsorption. According to the conditions of sound wave oscillation, we designed a signal gathering circuit whose oscillation frequency is 146 ± 5 MHz. Using lithium tantalate as piezoelectric substrate, through MEMS micro-fabrication we made finger-cross electrodes couple and hot film. We adopted vacuum deposition technology to make material of sensitive film into film, which modified the center of the SAW channel to compose the SAW sensor. The testing result indicates that when material has the best sensitivity, the mixture ratio is PdPc0.35PANI0.65. When the chip is heated to 60-80C, it can increase the performance, the responsive time is less than or equal to 30 s;The gas concentration of output and testing is consistent with that in the mathematic model, and is the N-style linear relation of linear change rate -110 kHz (mg/m3). The SAW sensor counteracts the interference of gasoline oil and carbon dioxide and so on;Through the checking of stability for 80 days, Δf is less than or equal to +0.1 kHz, which meets the requirement for practical use.

关键词： Phosphorus

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The CuCl2/CuPc sensor based on MEMS nanophase-pore A12O3 base plate and its mechanism study

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Gaojishu Tongxin/Chinese High technology Letters 2007年第1期17卷 54-58页

作者： Shi, Yunbo Guo, Jianying Zhang, Hongquan Shi, Qiang An, Hongliang College of Measure-Control Technology and Communication Engineering Harbin University of Science and Technology Harbin 150080 China

Taking the 90-100 nm hollow column Al2O3 film as the base plate, the CuCl2/CuPc sensor chip with the φ0.2 mm micro channels was designed and manufactured by using MEMS micro-machining method. By vacuum coating, CuCl2 hybrid ornamenting CuPc was evaporated to form the gas sensitive film, and through the micro shell packaging of it, the microstructure sensor was manufactured. This made the detecting mode of active air suction availiable, and the response time and gas sensitivity increased. SEM analysis showed that the better surface appearance and film dimension were obtained: the Al2O3 film-base plate is 0.25mm in thickness;its flank is a columnar compact body;its surface appears 990-100 nm nanophase-pore active state. The Pt films used as the electrode and the heater are 500nm in thickness, arranged columnarly and densely. The sensitive film is 150nm in thickness with continuous and normal arrangement. The micro shell is 150-200 μm in depth. The testing result indicates that the sensor has well sensitivity to Cl2, which is more than 5 times of that when the Cl2 concentration is 0.01%. The sensor's response time is less than 30s. The impacts of aerating state and heating voltage on the sensor's sensitivity were analyzed and the sensitive mechanism of CuPc organic semiconductor was discussed.

关键词： Al2O3 nanophase-pore column CuPc sensor Gas sensitive mechanism MEMS Micro shell packaging

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Circuits model of transformer for direct analysis and calculation

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Dianji yu Kongzhi Xuebao/Electric Machines and control 2007年第3期11卷 318-320页

作者： Fang, Guo-Zhi Song, Guo-Yi School of Measure-control Technology and Communication Engineering Harbin University of Science and Technology Harbin 150040 China

The methods used for analysis and calculation of the different voltage levels in power network are complex and can't direcdy analyze and calculate. According to the network theories of electro circuit, an equivalent circuit of transformer is proposed, which consist of operational amplifier in this paper. An engineering model of transformer is established by means of the voltage controlled voltage and circuit controlled circuit with the ideal operational amplifier, furthermore, the theoretic network equation is obtained from the electro circuit and the simulation analysis is conducted. Results of simulation show that equivalent circuit of transformer can be replaced by the engineering model of transformer, and the network equation of the model meets the equation of transformer. Thus the direct simulation analysis and calculations at different voltage levels can be conducted in the power network.

关键词： Electric transformers

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