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This paper focuses on revealing flame image characteristics in a pilot-scale air combustion and oxygen-enriched combustion furnace. Changes in flame image parameters were examined according to flame behavior patterns, and 3-D temperature field distribution had been investigated under different air to oxy-fuel combustion conditions. These differences were controlled by regulating operation parameters...
Relative reduction of billet height is one of the most important parameters of the forging process, which has great influence on forging quality. The inner defects compaction analysis models and the material damage analysis models of squaring, stretching and chamfering processes of long-axis heavy forging were established based on the software DEFORM-3D, and the influences of the relative reduction...
Along with the country to vigorously promote quality education and the society for undergraduates' innovation ability requirements, how to cultivate undergraduates' innovation consciousness and practice ability has become the focus of attention in higher colleges. In this paper based on the analysis of our undergraduates' innovation ability on the basis of the status of undergraduates' innovation...
Focus on the inconsistency between the convergence rate and the steady state error in LMS algorithm, this paper proposed a new variable step size LMS(VSS-LMS) algorithm, by constructing a nonlinear function between the step factor µ and the error signal e(n). The algorithm which modified the weight vector appropriately achieving the optimal by adjusting the step size parameters, could improve the...
This paper presents the direct control philosophy to compensate the power quality problems utilizing unified power quality conditioner (UPQC). The series part of UPQC is controlled as a sinusoidal current source by using a three-phase full-bridge voltage-source inverter, while the shunt part is controlled as a sinusoidal voltage source by using a four-leg voltage-source inverter. The mathematic model...
Based on Vague set,an integrative evaluation method for the stability classification of surrounding rock was presented. The principle and representation method about Vague set, score function of evaluation method were introduced, and then the evaluation index system for the stability classification of surrounding rock is put forward, the simple dependent degree is introduced to determine the weight...
In accordance with the ink cell structural redundancy of laser gravure image, a method of laser gravure image lossless compression by eliminating the ink cell structural redundancy is presented. At first the background of the ink cell is introduced. The problem of high resolution and high-capacity laser gravure image stored and transmitted is analyzed. Then the compression method is proposed based...
Spin-forming of cup-shaped thin-walled trapezoidal inner-gear is a new technology of the near-net forming in gear manufacturing field. Experiments and FEM simulations shows that the quality of workpiece is greatly influenced by the forming process method. The defects, such as the un-uniform distribution of tooth height along the axial and tangential directions and the wave-shaped opening-end of workpiece...
In accordance with the two-dimensional structural dependence of color cartoon image and the entropy coding theory in data compression, a method of color cartoon image lossless compression by eliminating the structural redundancy is presented. At first it is proved that the entropy of image can be reduced by way of removing the solid region. Then the method of removing the structural redundancy is...
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