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Integrated Measuring analysis Model Based on Regression Analysis Model and Gray Model and Its Application

Integrated Measuring analysis Model Based on Regression Anal...

引用

第三届国际自动化测试与仪器仪表学术会议

作者： Li Xiaofeng Kong Lingshuang Zhang Yi (Hunan University of Arts and Science,Changde 415000,China)

Concerning of the great error by using regression model in the electric measuring and the transforming for nonelectric parameters,an application of combining the residual grey model and the regression model into what was named integrated prediction fitting model in the paper has been *** modeling,the integration model showed a significant higher fitting precision in prediction versus the results of which only the regression model was *** analysis showed a declining trend of the fitting error in the integration model,which was in accordance with the basic principle of"Priority Innovation"and"Metabolism"in grey system ***,the integration model as an alternative to manual calculation can be applied in the production process control of textile industry and auto diversion can be implemented by using this technology of real-time detection.

关键词： Regression Model Residual Gray Model Integration On-line Measurement Fitting Error

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Performance Analysis of Transmit Antenna Selection in UWB System

Performance Analysis of Transmit Antenna Selection in UWB Sy...

引用

第三届国际自动化测试与仪器仪表学术会议

作者： Cai Guofa~1 Cheng Shuying~1 Zhuang Mingjie~2 Lin Jiaqing~2 (1 Department of Electronic Science and Technology,and Institute of Micro-Nano Devices & Solar Cells, Fuzhou University,Fuzhou,350002,China) (2Information Technology College,Jimei University,Xiamen,361021,China)

Incorporating Ultra-wide-band(UWB) technology into multiple transmit and receive antennas(MIMO) is a viable way to improve bit error rate(BER) performance for wireless ***,the large number of antennas requires lots of expensive *** reduce the hardware cost and complexity while to enhance BER performance,in this paper,based on knowing entire channel state information(CSI) at the transmitter, we provide an UWB system with transmit antenna selection(TAS). The simulation results confirm a considerable increase in BER performance in UWB channel.

关键词： UWB MIMO STC TAS UWB Channel

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Entire Optical Fiber Voltage Transformer's Design and Research

Entire Optical Fiber Voltage Transformer's Design and Resear...

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第三届国际自动化测试与仪器仪表学术会议

作者： Lou Fengwei~(1,2) Wang Rulin~1 (1.School of Mechanical Electronic and Information Engineering,China University of Mining & Technology, Beijing 100083 China 2.College of Information Science and Engineering,Yanshan University,Qinhuangdao 066004 China)

Introduced one kind of new entire optical fiber optics voltage *** mutual inductor is based on the quartz crystal counter piezoelectric effect,exerts the alternating voltage on the cylinder quartz crystal to cause it to have the piezoelectricity deformation,causes the winding to change in the periphery ellipse core double model optical fiber's double model phase difference,uses the driving zero difference phase track technology examination showing off potential difference again the change,obtains is measured the voltage the *** mutual inductor's design has conducted the feasibility study through the experiment,finally indicated that this case has the good precision and the linearity,has provided the rationale for optics voltage transformer's research.

关键词： Entire optical fiber voltage transformer Double model interference principle Counter piezoelectric effect Active homodyne phase tracker Voltage measurement

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Experimental Test for Control Performanceof Electronic Control Injector of Vehicle

Experimental Test for Control Performanceof Electronic Contr...

引用

第三届国际自动化测试与仪器仪表学术会议

作者： Liu Zhizhuang~(1,2),Zhang Wenzhao~1,Chen Aiwu~1,Liu Ailin~1,Li Yanfang~1,Song Shuran~2 (1.Department of Electronic Engineering,Hunan University of Science and Engineering,Yongzhou 425100 China 2.Key Laboratory of Ministry of Education of China,South China Agricultural University,Guangzhou 510642 China)

In order to realize on-line mixing pesticide for variable rate spray,an electronic control injector of vehicle is employed for flow control of farm *** characteristics of the electronic unit injector,such as linearity,linear range, frequency property,temperature property,are studied for optimizing the control *** experimental results show that it has good linearity between flow of the injector and the PWM *** flow rate is decreased with the increasing of frequency at the same dutyfactor,however the dead zone and the saturation region are *** temperature influence on flow is little,which can be neglected when temperature varies not too much.

关键词： Electronic control injector PWM frequency characteristic dead zone saturation region

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On-line Diagnosis for Rubbing Faults of a Micro Turbojet Engine Based on Acceleration Signals

On-line Diagnosis for Rubbing Faults of a Micro Turbojet Eng...

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第三届国际自动化测试与仪器仪表学术会议

作者： Chen Wei Du Farong Li Yunqing Ding Shuiting School of Transportation Science and Engineering Beijing University of Aeronautics and Astronautics,Beijing,China,100191

Advanced and verified an on-line method for diagnosing rubbing faults of a micro turbojet engine based on analysis of acceleration spectrum which is to identify faults characteristics happened with rubs in low frequency *** this paper,this method is verified through diagnosis for running incidents of random rubs and continuous *** former includes three kinds of rubbing status of sever rub,light rub and no *** latter happened with three neighboring impeller blades rubbing with stator in *** were actual faults happened in ground operations of a new designed micro turbojet *** confirm rubbing faults,time domain charts, frequency domain charts,color maps,waterfall maps based on acceleration signals are combined in this *** comparing identification results and actual fault status of the engine,they keep identical *** is to say the method is effective and ***,the contents studied in this paper can be references for faults diagnosis in engineering or airworthiness assessment for aero-engines.

关键词： micro turbojet engine rotor rub diagnosis airworthiness vibration Fast Fourier Transform(FFT)

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Measuring Metal Expansion Coefficient by Nano-displacement Measurement Method Based on Optical Lever

Measuring Metal Expansion Coefficient by Nano-displacement M...

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第三届国际自动化测试与仪器仪表学术会议

作者： Tan Xingwen~(1,2) Zhang Lei~2 Ren Fanghui~1 Liu Shuqiang~1 Luo Tian~1 (1 School of Physical Science and Technology,Southwest University,Chongqing,400715 ) (2 College of Electrical Engineering,Chongqing University,Chongqing 400020)

The nano-displacement measurement based on the principle of optical lever is a contactlessly measurement technology,which has been extensively used in industry and scientific research *** this study,with the aim to solve some intractable issues in existing optical lever apparatus,such as low resolving power,low precision,and discommodious reading device,we present a multi-amplify and data auto-collecting system with real time technology based on optical lever and Position Sensitive Detector(PSD) sensor,and design an apparatus to measure the linear expanding coefficient. According to the multi-amplify technology,the tiny displacement is amplified significantly,meanwhile,artificial error is eliminate based PSD sensor and Labview data collecting and analysis *** experimental measurements indicate that the system repeat precision of brassiness,iron,aluminum and red copper is 7.5,7.2,7.6 and 8.1 nm.

关键词： optical lever nano-displacement measurement PSD Labview linear expanding coefficient

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Neuron Decoupling and Adaptive PID Control of Three-motor Variable Frequency Speed-regulation System

Neuron Decoupling and Adaptive PID Control of Three-motor Va...

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第三届国际自动化测试与仪器仪表学术会议

作者： Shen Cuifeng (Yancheng Institute of Technology,Yancheng 224002 China)

Three-motor variable frequency speed-regulation system is a multi-input multi-output(MIMO),nonlinear,and high coupling complex control *** on the system of induction motors powered by current-tract SPWM transducers,the mathematic model of the system of three motors is *** adaptive PID controllers based on RBF neural network are adopted to be used in the velocity loop and two tension loop respectively,which makes the system possess stronger adaptive capability and perform *** order to minimize the coupling effect,combining decoupling technology of adaptive neuron decoupling compensation,a neuron decoupling compensator is *** integrates the coupling effects of the three loops and realizes the decoupling control between velocity and tension by training the weights of networks to compensate the coupling effects,realizing the decoupling between speed and tension of the *** experiment results show that the three-motor system is decoupled based on neural network control,and it can be extended to the usual multi-motor(n≥3) system.

关键词： Three-motor neural networks RBF networks decoupling control tension control

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Key Technologies in Software Development of Digital Vortex Flowmeters with Low Power Consumption

Key Technologies in Software Development of Digital Vortex F...

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第三届国际自动化测试与仪器仪表学术会议

作者： Luo Qinglin~1 Xu Kejun~(1,2) Fang Min~1 (1 School of Electrical and Automation Engineering,Hefei University of Technology,Hefei 230009 China 2 Engineering Technology Research Center of Industrial Automation,Hefei 230009 China)

Several key problems in software development of digital vortex flowmeters with low power consumption are studied *** 2N points RFFT is computed by N points CFFT to shorten the calculation time and to meet the real-time requirements of *** calculation results of power spectrum and frequencies are averaged to enhance stability of measurement results,and a threshold of frequency jumping is set to increase response speed of *** correction method of meter factor is improved to increase the measurement accuracy of *** are output by timer interrupt and PWM module,the decimal fraction is accumulated to compensate the output pulses and to eliminate the error between total pulses and total flow mate.

关键词： CFFT stability response speed meter factor pulse output

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Measurement and Application of Road Profile

Measurement and Application of Road Profile

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第三届国际自动化测试与仪器仪表学术会议

作者： Duan Huming~(1,3) Ma Ying~2 Shi Feng~2 Zhang Kaibin~2 Xie Fei~2 (1.Post-Doctoral Research Center of China Automobile Engineering Research Institue,Chongqing 400039 2. China Automobile Engineering Research Institue,Chongqing 400039 3.College of Automotive Engineering of Tongji University,Shanghai 201804)

It's reviewed that the research progresses of the measurement methods of road profile and road surface spectrum in recent years.A new measurement method of road profile is presented and a high precision road surface profile measurement system(RSPMS) is *** measurement principle and testing method of RSPMS are *** on the measurement device,these are many contrastive tests are completed with Level and Ruler to get the measurement precision of the *** contrastive tests consisted mostly of small wavelength signals and large wavelength signals and got better ***,the applications of the road profile data are *** the end,the merits and drawbacks of the measurement method are evaluated and the using fields of the road profile data are summarized.

关键词： road profile road surface spectrum measurement system comparative test

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A Method of High Resolution Position Detection at Vehicle Based on Induction Radio

A Method of High Resolution Position Detection at Vehicle Ba...

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第三届国际自动化测试与仪器仪表学术会议

作者： Chen Jin~1 Chen Xin~2 Cheng Wangbin~1 (1.School of Information and Communication Engineering,Hunan Institute of Sci.and Tech.,Yueyang 414006,China 2.Chairman Electronics Co.,Ltd of Yueyang,Yueyang 414000,China)

Induction radio based position detection technology including two key issues-detecting speed and resolution,has been widely applied in automatic control for industrial operating *** to its position detector location, it can be classified into position detection at fixed station (PDFS) and at vehicle(PDV),where the latter is superior to the former in speed and *** this paper,a method of induction radio based high resolution PDV is *** achieves the high resolution position detection by modeling the electromagnetic induction between coils in antenna and pair-wires in coded cable using the uniform magnetic field *** basic principles and framework of the proposed method are demonstrated,and details of its key components such as the structure and coded cable *** presented as well. Finally,the experimental results proof that the proposed method can achieve continuous position detection with a high resolution of 2mm.

关键词： Induction radio coded cable position detection resolution

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