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The separation efficiency and resistance loss of curved plate affected by blade spacing, and velocity and average particle size are experimentally investigated. Meanwhile, a new measuring device is used to detect the moisture content. The results show that dehydration efficiency and resistance loss gradually decrease with the blade spacing of curved plate increasing. Resistance loss and dehydration...
Based on the new generation of GPS, a minimum zone mathematical model for cylindricity error evaluation was given. According to the characteristics of cylindricity error evaluation, an improved Particle Swarm Optimization (PSO) with hybrid gene is proposed to evaluate the mathematical model. Finally an example verifies the feasibility and availability of the method.
Aimed at the nonlinear, asymmetric and fluctuant characteristics of the traction loads, this paper researches and analyzes the loading characteristics and power factor values of V-V, Y-D11 and Impedance-Matching traction transformers by a novel approach. Four definitions of power factor are compared-three considering harmonics and unbalances and one base only on fundamental components. This paper...
Printing on demand technology develops in view of the traditional printing shortcoming and the present time new change demand, it has satisfied the people's "needs" to the printed matter. In order to facilitate the digital content fast which we inquiry it, this paper used the workflow software demonstrate this process that from polling message to transmission the digital content. The results...
This paper presents a comparative study between Partial Least Squares (PLS) method and support vector regression (SVR) in modeling the relationship between the near infrared spectra (NIRS) and the polysaccharide contents in Cordyceps gunnii mycelia powder samples. Both of the models were optimized by selecting the suitable spectra preprocessing methods and the best modeling parameters. And then the...
Emerging road network data management needs data integration which conventional planar road data models are insufficient to support. And the prevalent data models have advantages and disadvantages varying in representation scale. In order to comprehend the user requirements, an integrated road data model for multi-scale transportation applications was introduced, including three topology abstraction...
the torsional vibration model in main drive system of cold rolling mill is built with the consideration of nonlinear stiffness and nonlinear friction coefficient. The global sliding mode controller is designed for rolling mill drive system for rejecting plants with rolling parameters' uncertainties, as well as a better tracking behavior. Simulation results show the validity of the nonlinear model...
DIDSON (Dual-frequency identification sonar), a new generation of acoustic video cameras, is applied to research and detect the underwater environment in this paper. In order to solve the shortcomings of the DIDSON in underwater environment, we propose a real-time forward-scan sonar image mosaicing method and system. Through a series of processing to the DIDSON images, such as image registration,...
In this paper, a novel PID feedback control algorithm for nonlinear networked control systems with random delays is presented by a new performance index. The performance index is represented by both maximizing information potential of tracking error and minimizing the square of incremental control input. The information potential is estimated by Parzen windows and quadratic Gaussian kernels. The convergence...
Goal of proposed algorithm is to enhance images like the digital camera photos or, better. Some enhancement filters process too excessive that makes image look unnatural. The paper proposes an algorithm to represent obviously the detailed textures and sharpen the overall image based on perceptual approach. Then the sharpened images are merged by the edge information of original image. The experimental...
In recent decades, reticulated structure is widely used in large span spatial structures in China. It shows a trend of increasing span and more complicated. Based on the development of reticulated structures manufacturing industry both domestic and abroad, and the successful application experience of advanced manufacturing technology in other industries, a bolt-ball Joints CAD/CAM system for CNC machine...
To achieve the calibration parameters of vision measurement system, this paper presents a new camera calibration method based on grid recognition. The calibration is implemented by acquiring the corresponding relations between the world coordinates and pixel coordinates of the planar gridding target image captured by camera. Meanwhile, the pixel coordinates of the target image are detected separately...
For improving the position accuracy of dead reckoning system, this paper discussed the influence of tire temperature on odometer's scale factor. The error model of dead reckoning was analyzed, an INS/Odometer/CDGPS approach was proposed, and kalman filter was used to calibrate odometer's scale factor with tire temperature. Experiment results show that this method can accurately calibrate the characteristics...
To improve the accuracy of tunnel geological prediction, a principle of comprehensive prediction that takes the geological analysis as the target, combining geological analysis and geophysical exploration, is carry out, a method of tunnel geological synthesis prediction according to expert consultation is established. And based on the modern network information technology, an on-line consulting website...
Reflective raised pavement marker is one of the most important traffic safety facilities. But the high damage rate seriously affects its value. The research begins with the failure mechanism analysis of reflective raised pavement markers based on survey. A finite element analysis model is set up by using ANSYS and FE-SAFE to carried out mechanical analysis to simulate the stress concentration points,...
The relationship of the 4 kinds of noise about the excavator as noise discharged out of diesel, noise exhausted through resistance muffler, noise radiation of the diesel and the noise in manipulator cell has been studied in this paper with the method of spectrum analysis after the according noise signal collected, and the conclusions have been obtained as follows: the noise signal discharged out of...
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