工科专业应加强应用电子技术教学

一、加强应用电子技术教学的重要性随着以计算机和无线电技术为代表的现代电子技术在国民经济和社会生活中的迅速普及和应用,西方发达工业国家已率先步入信息时代。由于现代电子技术在发展国民经济,提高人民物质和文化生活水平中的重要地位和作用,我国已将其列为国家重点扶持和发展的高新技术。电子技术的应用已深入国民经济和社会生活的各个领域,日益显著地影响着经济发展的速度。能源、交通、通讯、机械、冶金、航空航天、家电等行业和国防工业对电子技术的严重依赖性已众所周     

CCD比色测温中烟雾干扰的滤波与温度校正算法

在CCD比色测温中,弥漫于辐射体周围和辐射光路上的烟雾将吸收和散射辐射体的辐射光,导致测温结果失真.提出一种高温辐射体烟雾干扰的滤波与温度校正算法.先通过基于高温辐射体颜色信息的图像目标识别方法去除辐射体周围的烟雾噪声,再分割出受烟雾干扰的区域,然后利用适当的非线性校正函数对由比色测温公式计算出的该区域的温度进行校正.实验证明:该方法可以有效地减小烟雾干扰对测温结果的影响,提高CCD比色测温的准确性和实用性.     

基于神经网络和自适应残差补偿的炼铜转炉吹炼终点预报模型

讨论了权值初始化、变量的预处理、学习过程参数的自适应调节、网络拓扑结构等因素对学习和推广的影响,提出了一种改进的ＢＰ神经网络学习算法,在很大程度上改善了学习效率。采用改进的带有８个输入变量的ＢＰ神经网络算法和自适应残差补偿算法建立吹炼终点组合预报模型。利用某厂实际生产数据进行仿真运行的结果表明,利用该组合预报模型得到的平均相对预测误差为１．２％,最大误差为４％。     

氧化铝蒸发工序的用能分析及节能途径探讨

蒸发是氧化铝生产的重要工序之一,其能耗的高低直接制约了氧化铝生产工业的发展.提出了以体系能量分析为基础,找出高耗能且具高节能潜力的系统、单元或设备,有针对性地采取过程能量优化、更新升级设备、改进现有流程和开发应用新工艺等手段,实现节能降耗的经济实用的技术路线,并以氧化铝蒸发工序节能降耗为例进行了具体的分析说明.     

一种基于信息融合的指纹特征点提取方法

针对进行指纹图像预处理时产生的伪特征点难以消除的问题,提出了一种基于信息融合的指纹特征点提取方法;该方法首先通过取两种不同预处理方法所获得的指纹特征点集的交集来剔除在指纹图像预处理过程中所产生的伪特征点,然后根据特征点的结构信息来消除原始指纹图像本身所存在的伪特征点;实验结果表明,该方法不仅可以有效地消除指纹图像预处理过程所产生的伪特征点,同时也能消除原始指纹图像中存在的伪特征点。     

Neural network based on adaptive chaotic gradient descending optimization algorithm and its application in matte converting process

An adaptive chaotic gradient descending optimization algorithm for single objective optimization was presented. A local minimum judged by two rules was obtained by an improved mutative-step gradient descending method. A new optimal minimum was obtained to replace the local minimum by mutative-scale chaotic search algo-rithm whose scales are magnified gradually from a small scale in order to escape local minima. The global optimal value was attained by repeatedly iterating. At last, a BP (back-propagation) neural network model for forecasting slag output in matte converting was established. The algorithm was used to train the weights of the BP neural net-work model. The simulation results with a training data set of 400 samples show that the training process can be fin-ished within 300 steps to obtain the global optimal value, and escape local minima effectively. An optimization sys-tem for operation parameters, which includes the forecasting model, is achieved, in which the output of converter increases by 6.0%, and the amount of the treated cool materials rises by 7.8% in the matte converting process.     

On-line forecasting model for zinc output based on self-tuning support vector regression and its application

An on-line forecasting model based on self-tuning support vectors regression for zinc output was put forward to maximize zinc output by adjusting operational parameters in the process of imperial smelting furnace. In this model, the mathematical model of support vector regression was converted into the same format as support vector machine for classification. Then a simplified sequential minimal optimization for classification was applied to train the regression coefficient vector α-α^* and threshold b. Sequentially penalty parameter C was tuned dynamically through forecasting result during the training process. Finally, an on-line forecasting algorithm for zinc output was proposed. The simulation result shows that in spite of a relatively small industrial data set, the effective error is less than 10% with a remarkable performance of real time. The model was applied to the optimization operation and fault diagnosis system for imperial smelting furnace.     

矩形六电极炼镍矿热熔炼炉电场的模型试验

以水力模型实验为手段对１６５００ｋＶＡ六电极炼镍矿热电炉进行了模拟试验，探讨了熔池中的电位分布、电流分布、功率分布特点及溶液浓度、熔池渣层深度、加料方式、电极插入深度、电极尺寸等因素对熔池电场分布的影响，提出了有关参数的优化值。     

贫化电炉动态模糊优化决策模型研究

研究并建立了分化电炉动态模糊优化决策模型，克服了以物料平衡和热平衡为基础的静态模型难以适应动态生产过程这一缺陷，领导具结果表明，该模型可用于对实际生产过程进行优化决策，达到节能降耗、提高有价金属回收率的目的。     

Fast generation method of fuzzy rules and its application to flux optimization in process of matter converting

1 INTRODUCTIONIn general ,the physical attributes of tempera-ture ,pressure and position are continuous in theprocess of industrial production. Data with contin-uous attributes are also called numerical data orquantitative data[1 3]. Numerical data can reflectthe real world,but it is very indigestible .It is al-most i mpossible to build mathematical model to op-ti mize complexindustrial process .So it is difficultto obtain steady and opti mal productionindexes ofthe process of nonferrous …