The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In this paper, Shenyang No.1 Line Metro Environment and Equipment Monitoring System (MEEMS) is developed based on CIMS architecture. Because all parts of MEEMS systems need to be tested before delivery, System platform is designed. Three-layer control structures of MEEMS systems is designed, which are test platform composed of center-level, station-level and on-site-level. The simulation test platform...
This article describes the KWP2000 protocol interface design in the body control module and the related information acquisition mode in vehicle body control module, using the MC33972 chip to multi-sample analog signal. The fault diagnosis will be known through KWP2000 bus according the sampling data after MCU judge error. The technology described in this article can be widely used in the design of...
Based on the conception of relative-degree of differential geometry theory on nonlinear system, nonlinear disturbance decoupling control on travelling crane electro-hydraulic servo system with dual cylinder was studied. Through define relative-degree of disturbance vectors on the nonlinear system, the sufficient condition of system disturbance decoupling was provided. Then a differential geometry...
A new analytical method of parallel robot dynamic is reported in this paper, which is different from the traditional research model of the Evolution Modeling + Manual Programming + Numerical Calculation. The paper presents the method to create Multi-Agent model is concise, natural and convenient. The method is also applied to the static, kinematics, dynamic analysis of parallel robot and the dynamic...
This paper presents an embedded omni-vision Real-Time Object Recognizing system which involves collecting image and correction, the Freeman Chain Code methods, Field Programmable Gate Array (FPGA), Digital Signal Processor (DSP) and Private Compute (PC)communication. Employing the high-perform of FPGA and intellectual property (IP) cores from Altera accelerates the speed of calculate and implements...
Microbial fuel cells (MFCs) generate electricity using bacteria to degrade something and produce current, which have gained much attention. Harmful algae blooms(HABs) in lakes and rivers are on the increase all over the world, which becomes a more and more serious problem in the field of environment. In this study, algae MFCs(the main bacteria of MFCs were algae) were constructed and measured. The...
In this paper, an evaluation method for effective resolution of measurement system is designed based on ANOVA and Correlation analysis. An evaluation platform based on this method is designed. Finally, constructs an machine vision detection system of ceramic substrates, evaluates sub-pixel method of advanced Sobel operator and three - order spline interpolation function, and calculates the actual...
In this paper, distribution and pattern of the microcosmic porosity in 30Cr2Ni4MoV steel were researched quantificationally by metallographic analysis. Initial relative density of the defect zone was calculated. Porosity model was used to simulate the FM stretching with process parameter as 1200¿ temperature, 0.6 die width ratio by finite element software deform-3d. Variational pattern...
This paper aims to raise a new kind of MDEA - TETA blended absorbent for capturing flue gas CO2, to study the absorption time, different concentration ratios and reaction temperature on the influence of the mixed amine-based absorbents and to compare absorption effect between different proportions of mixed amine-based absorbents and MDEA absorbent which commonly used in industry. The results showed...
This article adopted the finite element method (FEM) to analyze and compare the stress value of FROMO® preload nut of the SN series and the improved structural product-SSN series. The analysis result shows that: (1)By reasonable select numerical model, we can predict the stress value of FROMO® preload nut. (2)By redesigning the size of nut, the product is improved. The stress...
We studied the general motion command generation which is applied in any digital controller with FFC (Feed Forward Compensation) structure. The problem is studied under the nominal scenario and one special scenario. Some fundamental results are proposed to relate the symmetry of acceleration and mean velocity (SAM). For the one special scenario, some experiments are carried out for verification.
Centrifugal compressor performance prediction method mainly uses the traditional BP neural network problem is not high enough accuracy, convergence, easily falling into local optimal solution. In order to more accurately predict the performance of centrifugal compressors, find problems early implicit commit. Is the algorithm, wavelet theory, artificial neural networks, established immune algorithm...
Whether the hybrid active power filter with injection circuit (IHAPF) gets desirable effect of harmonic suppression mainly depends on the detecting method. For it is a dynamic harmonic filtering equipment, it has high request in system's instantaneous. The delay and convenience on the performance of IHAPF is focused on and an improved method with simple integration and delay and gain to substitute...
Proteins are of the highest content in organism, which function as the most important biological macromolecules. So the ability to identify proteins and to determine their covalent structures has been central to the life sciences. Mass spectrometry is an analytical technique for measuring the charge to mass ratio of ions, due to its high accuracy, it is a central analytical technique for protein research...
For the wide spread use of digital image monitoring system, using surveillance image overlay infrared direct signal, we achieve a new method of sensing detection. The method is to superimpose the sensor information which contains the infrared image signal on the monitor image screen, through the local gray-level analysis, and the method is an infrared target enhancement based on the the image subtraction,...
A new hybrid active power filter, composed of passive power filters and active power filter, is proposed for harmonic suppression and high capacity reactive power compensation. A kind of configuration of the hybrid power filter has been presented and its basic principle is addressed, furthermore, the design of passive power filters and the analysis of harmonic current injected by active power filter...
The optimum ageing process parameters for 6063 aluminium alloys were obtained with the aids of orthogonal polynomial regression analysis and optimization methods. The regression equation between ageing hardness and ageing temperature and time was obtained. The optimum solution of the regression equation was found with optimization method. The optimum hardness of 76.6HV was obtained adopting two staged...
According to 3GPP RAN1 conference, power scaling for uplink power control should be applied equally. However, the detail of power scaling is a remaining issue. In this contribution, we clarify some cases of power scaling and propose several options of power scaling on PUSCHs. It is not clear that whether the equal power scaling is relative to the allocated transmission power after or before power...
In order to better predict the performance of centrifugal compressor and find out hidden problems as early as possible, we combine genetic algorithm, wavelet theory and artificial neural network together to establish the performance predictive model for centrifugal compressor based on wavelet neural network optimized by genetic algorithm. This predictive model can help us monitor the performance change...
Aiming to the disadvantages of traditional manual mechanical adjustment for gaps between key parts of offset machine, a method for gaps adjusting automatically was proposed and a design for adjusting device was formed. In this research, the principle of adjustment automatically was illustrated, the hardware configuration of adjustment automatically system was designed and the functions and flow of...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.