The paper deals with factorial experimental design models decoding.For the ease of calculation of the experimental mathematical models,it is convenient first to code the independent variables.When selecting independen...The paper deals with factorial experimental design models decoding.For the ease of calculation of the experimental mathematical models,it is convenient first to code the independent variables.When selecting independent variables,it is necessary to take into account the range covered by each.A wide range of choices of different variables is presented in this paper.After calculating the regression model,its variables must be returned to their original values for the model to be easy recognized and represented.In the paper,the procedures of simple first order models,with interactions and with second order models,are presented,which could be a very complicated process.Models without and with the mutual influence of independent variables differ.The encoding and decoding procedure on a model with two independent first-order parameters is presented in details.Also,the procedure of model decoding is presented in the experimental surface roughness parameters models’determination,in the face milling machining process,using the first and second order model central compositional experimental design.The simple calculation procedure is recommended in the case study.Also,a large number of examples using mathematical models obtained on the basis of the presented methodology are presented throughout the paper.展开更多
有源电力滤波器(Active Power Filer)的数学模型对于控制器设计及交直流能量传递分析具有重要意义。针对目前广泛使用的并联型APF主拓扑结构建立数学模型,并在此基础上使用一种不定频滞环SVPWM电流控制策略。详细分析并建立了三相三线制...有源电力滤波器(Active Power Filer)的数学模型对于控制器设计及交直流能量传递分析具有重要意义。针对目前广泛使用的并联型APF主拓扑结构建立数学模型,并在此基础上使用一种不定频滞环SVPWM电流控制策略。详细分析并建立了三相三线制APF数学模型,给出了控制器设计方法。经仿真与实验验证表明,建立的并联型有源电力滤波器的数学模型是正确的,其控制策略具有一定的参考价值。展开更多
文摘The paper deals with factorial experimental design models decoding.For the ease of calculation of the experimental mathematical models,it is convenient first to code the independent variables.When selecting independent variables,it is necessary to take into account the range covered by each.A wide range of choices of different variables is presented in this paper.After calculating the regression model,its variables must be returned to their original values for the model to be easy recognized and represented.In the paper,the procedures of simple first order models,with interactions and with second order models,are presented,which could be a very complicated process.Models without and with the mutual influence of independent variables differ.The encoding and decoding procedure on a model with two independent first-order parameters is presented in details.Also,the procedure of model decoding is presented in the experimental surface roughness parameters models’determination,in the face milling machining process,using the first and second order model central compositional experimental design.The simple calculation procedure is recommended in the case study.Also,a large number of examples using mathematical models obtained on the basis of the presented methodology are presented throughout the paper.
文摘有源电力滤波器(Active Power Filer)的数学模型对于控制器设计及交直流能量传递分析具有重要意义。针对目前广泛使用的并联型APF主拓扑结构建立数学模型,并在此基础上使用一种不定频滞环SVPWM电流控制策略。详细分析并建立了三相三线制APF数学模型,给出了控制器设计方法。经仿真与实验验证表明,建立的并联型有源电力滤波器的数学模型是正确的,其控制策略具有一定的参考价值。
