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2010 International Conference on computer and Communication Technologies in Agriculture Engineering, CCTAE 2010

作者： Yao, Zheng Lou, Guohuan Zhao, Qingxin College of Computer and Automatic Control Hebei Polytechnic University Tangshan China Tangshan Mine Kailuan Group Tangshan China

ISBN: (纸本)9781424469451

In the power plant, the blower fans running conditions related to the power plant production directly, as well as the security situation. This article introduced embedded system monitoring to the Auxiliary power plant machinery diagnostics systems. An on-line mechanical fault diagnosis system was developed based on ant colony algorithm and Elman neural network. This system integrated data acquisition, signal processing, network communications, on-line fault diagnosis and other functions into one. Experiments show that this method is simple and effective. It can also be applied to other fault diagnosis of complex systems and has certain portability. © 2010 IEEE.

关键词： Failure analysis

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RETRACTED ARTICLE: Network queue management and packet loss control strategy based on middleware technology

RETRACTED ARTICLE: Network queue management and packet loss ...

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2009 International Conference on E-learning, E-Business, Enterprise Information Systems, and E-Government, EEEE 2009

作者： Liu, Xiaoyue Zheng, Fang College of Computer and Automatic Control Hebei Polytechnic University Tangshan Hebei China Tangshan Iron and Steel Co. Ltd. Tangshan Hebei China

ISBN: (纸本)9780769539072

A number of multi-media applications are growing in the Internet, many Web sites are frequently faced with the problem of overloading the server. IP networks can not guarantee a specific QoS service requirement, which has become tremendous obstacles to develop IP networks into broadband integrated services network. This paper analyzes web based on campus network and proposes based on the distinct services and middleware technology methods. Allocating the network users a higher priority to solve the problems that visit website slowly, not open web pages and others; mainly research the queue management and packet loss control and improve the utilization of the package to protect the LAN Web service performance. © 2009 IEEE.

关键词： Internet protocols

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Real-time reading recognition of digital display instrument based on BP neural network

Real-time reading recognition of digital display instrument ...

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2010 8th IEEE International Conference on control and Automation, ICCA 2010

作者： Gong, Ruikun Yuan, Kui Nian, Shanpo Chen, Lei Zhang, Guangxiang Tian, Yansong College of Computer and Automatic Control Hebei Polytechnic University Tangshan 063009 Hebei Province China Academic Affairs Department Hebei Polytechnic University Tangshan 063009 Hebei Province China Graduate School Hebei Polytechnic University Tangshan 063009 Hebei Province China

ISBN: (纸本)9781424451951

In many chemical industries, the metallurgy, a number of digital real-time monitoring instruments are used. The manual method will bring the problems of inefficient and misjudge. To recognize digital display instrument's real-time reading, a BP neural network is designed, an improved BP algorithm and fifteen feature extraction method is proposed. The image of instrument board is obtained by an digital camera firstly, then transmitted to PC, and an image preprocessing is carried through. The image preprocessing includes vertical tilt correction, binary, gray processing, grads sharp, noise point removal, character segmentation, character unitary adjustment, character contraction and feature extraction. Character features are extracted by n dimensions feature extraction method. Finally real-time recognize the reading by the BP neural network. The experiment results show that the recognition accurate rate is greater than 98%. And the time of recognizing for one instrument image is less than 0.5 second. © 2010 IEEE.

关键词： Feature extraction

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Design of active disturbance rejection controller for the rolling mill automatic position control stopping system

Design of active disturbance rejection controller for the ro...

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作者： Ruicheng, Zhang Guide, Li College of Computer and Automatic Control Hebei Polytechnic University Hebei Tangshan 063009 China Engineering Agency Tangshan Municipal Construction Corporation Hebei Tangshan 063000 China

ISBN: (纸本)9783642251849

A nonlinear model of the rolling mill automatic position control system is derived based on analyzing the friction between roll and metal plate, the flexibility and the roll eccentricity force. The nonlinear characteristic of the automatic position control (APC) system is analysed. The result shows the APC system has chaotic characteristics. Aim at the characteristics of the APC system,such as nonlinear and variable parameter,a robust controller of the APC system is designed based on active disturbance rejection control(ADRC) technology. The simulation results show that the ADRC controller has very strong robustness to the system chaos and the large load disturbance, and rapid and smooth control process and high steady precise performances can be implemented. © 2011 Springer-Verlag Berlin Heidelberg.

关键词： controllers

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The design of the ultrasonic liquid density measuring instrument

The design of the ultrasonic liquid density measuring instru...

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3rd International Conference on Measuring Technology and Mechatronics Automation, ICMTMA 2011

作者： Haiqun, Wang Yi, Cao Yugui, Zhang Zhikun, Chen College of Computer and Automation Control Hebei Polytechnic University Tangshan Hebei 063009 China

ISBN: (纸本)9780769542966

In the present discussion, it is described for the work principle of the ultrasonic liquid density meter. The center frequency of the ultrasonic transducer is 1MHz. The paper gives the design of the hardware and the program flow diagram. Under laboratory conditions, we detect 90# gasoline and the experimental result shows that it is consistent with the theoretical result. © 2011 IEEE.

关键词： Liquids

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Application of internal model control in hydraulic servo system

Application of internal model control in hydraulic servo sys...

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2009 International Workshop on Intelligent Systems and Applications, ISA 2009

作者： Shi, Tao Tang, Rui-Yin Chen, Zhi-Kun College of Computer and Automation Control Hebei Polytechnic University Tangshan China

ISBN: (纸本)9781424438945

Aiming at the complexity of hydraulic vibrancy platform, a PID control method of double closed loop control based on IMC control principle is put forward. It realized the proportion control in inner loop using the anti-interference of the PID control, and the controlled object was transformed into a one-order inertia link with the time-delay unit. After approximating the time-delay unit by the 1/1 Pade method, the low pass filter and PID controller that they are equivalent to IMC controller can be obtained by using IMC control principle to realize outer loop control. Listing some material steps at designing of IMC controller, through the simulation experiment, it shows that the IMC-PID control method is superior to the traditional PID method in anti-interference and robustness, and its application value in projects is very high. © 2009 IEEE.

关键词： Three term control systems

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Design of blast furnace blower supervision system based on PLC

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Dongbei Daxue Xuebao/Journal of Northeastern university 2007年第SUPPL. 1期28卷 241-243+251页

作者： Zhao, Wei Lou, Guo-Huan College of Computer and Automatic Control Hebei Polytechnic University Tangshan 063009 China

According to the demand of the process of axial blast furnace blower, the application of PLC in a blast furnace blower supervision system and functions and design methods of control models, the realization with servo control system of stator blades, methods for preventing the surge of axial blower and adverse current protection are discussed. The stator blades and antisurge valves are effectively controlled with process control software, which overcomes the flaws in the former control method, and the demand for air pressure and quantity from blast furnace can be met.

关键词： Blast furnaces

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Research on erasing CO2 influence on the detection of SO 2 based on data fusion

Research on erasing CO2 influence on the detection of SO 2 b...

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2010 8th IEEE International Conference on control and Automation, ICCA 2010

作者： Chen, Lei Gong, Ruikun Nian, Shanpo Sun, Zhongkui Zhang, Guangxiang Tian, Yansong Graduate School Hebei Polytechnic University Tangshan 063009 Hebei Province China College of Computer and Automatic Control Hebei Polytechnic University Tangshan 063009 Hebei Province China Academic Affairs Department Hebei Polytechnic University Tangshan 063009 Hebei Province China College of Light Industry Hebei Polytechnic University Tangshan 063009 Hebei Province China

ISBN: (纸本)9781424451951

Studying the infrared spectrum absorption characters of SO2 and CO2 in middle infrared region, we have found that the band which CO2 effects the measure result of SO2, and mathematical model is established which is to erase the cross disturbance of CO2. The SO2 concentration detection device of single light-four detectors is designed to measure the concentrations of SO2 and CO2 respectively by two pairs of light filters and detectors. Fitting curve equation between SO2 and CO2 are gained by experiment data fusion. This method overcomes deficiency of single measure method, erasing the influence of CO2 on SO2 measure precision efficiently. Thus, an effective method is found to analyze infrared gases. © 2010 IEEE.

关键词： Carbon dioxide

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The research of control for sintering burn-through point based on finite-state machine

The research of control for sintering burn-through point bas...

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2011 International Conference on Electric Information and control Engineering, ICEICE 2011

作者： Chen, Zhi-Kun Wang, Yu-Tian Wang, Fu-Bin Institute of Electrical Engineering YanShan University Qinhuangdao 066004 China Computer and Automatic Control College Hebei Polytechnic University Tangshan 063009 China

ISBN: (纸本)9781424480395

The stable control for sintering burn-through point is the important condition that assuring sintering machine run highly active, increasing the yield and quality of sintering ore. For the aim of control independently for sintering burn-through point, build the control system architecture suited to sintering machine. The control object of sintering burn-through point is resolved into control task, control behavior and control action stepwise, based on finite-state machine principle. Collect environment information of sintering, as transition drive event or condition between every state, achieve the control object of stable sintering burn-through point autonomy. © 2011 IEEE.

关键词： Sintering

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Study on detecting technology for slight signal on crack forecast in continuous casting

Study on detecting technology for slight signal on crack for...

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2010 International Conference on computer and Communication Technologies in Agriculture Engineering, CCTAE 2010

作者： Sun, Jie Li, Wendong Yang, Youliang School of Computer and Automatic Control Hebei Polytechnic University Tangshan Hebei China TangShan Property Management Centre South Road Tangshan Hebei China

ISBN: (纸本)9781424469451

As we known, It is very important that the checking of crack in the production of continuous casting billet. Usually we use the method of checking the temperature of the crystallizer. But the temperature fluctuation of the crystallizer is hard to be checked when the crack appears, so an appropriate method to deal with this problem must be studied. This paper briefly discusses the picking-up method for those slight signals - temperature from the thermocouples around the crystallizer that check the temperature fluctuation, because of those slight signals in the crack checking of the continuous casting billet might be submerged in noise entirely. It analyses the difference between the signal and the noise on the time and the statistics, and introduces a kind of effective detecting method, applying the correlation function to pick up the slight signal submerged in noise entirely. © 2010 IEEE.

关键词： Continuous casting

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