如何将数据库中的数据以图形的方式直观地显示出来,一直是程序开发人员努力解决的问题.作者阐述了基于ADO(ActiveX Data Objects)对象的,利用Visual Basic开发环境自带的MSChart控件生成动态统计图的方法,介绍生成动态统计图的具体步骤...如何将数据库中的数据以图形的方式直观地显示出来,一直是程序开发人员努力解决的问题.作者阐述了基于ADO(ActiveX Data Objects)对象的,利用Visual Basic开发环境自带的MSChart控件生成动态统计图的方法,介绍生成动态统计图的具体步骤,指出MSChart控件在生成动态统计图方面的不足之处,并提出相关的改进方法.结合河南省航道基础地理信息系统的开发实例进行分析,表明这种方法具有很好的应用价值.展开更多
Statistical Energy Analysis(SEA) is one of the conventional tools for predicting vehicle high-frequency acoustic responses.This study proposes a new method that can provide customized optimization solutions to meet NV...Statistical Energy Analysis(SEA) is one of the conventional tools for predicting vehicle high-frequency acoustic responses.This study proposes a new method that can provide customized optimization solutions to meet NVH targets based on the specific needs of different project teams during the initial project stages.This approach innovatively integrates dynamic optimization,Radial Basis Function(RBF),and Fuzzy Design Variables Genetic Algorithm(FDVGA) into the optimization process of Statistical Energy Analysis(SEA),and also takes vehicle sheet metal into account in the optimization of sound packages.In the implementation process,a correlation model is established through Python scripts to link material density with acoustic parameters,weight,and cost.By combining Optimus and VaOne software,an optimization design workflow is constructed and the optimization design process is successfully executed.Under various constraints related to acoustic performance,weight and cost,a globally optimal design is achieved.This technology has been effectively applied in the field of Battery Electric Vehicle(BEV).展开更多
文摘如何将数据库中的数据以图形的方式直观地显示出来,一直是程序开发人员努力解决的问题.作者阐述了基于ADO(ActiveX Data Objects)对象的,利用Visual Basic开发环境自带的MSChart控件生成动态统计图的方法,介绍生成动态统计图的具体步骤,指出MSChart控件在生成动态统计图方面的不足之处,并提出相关的改进方法.结合河南省航道基础地理信息系统的开发实例进行分析,表明这种方法具有很好的应用价值.
文摘Statistical Energy Analysis(SEA) is one of the conventional tools for predicting vehicle high-frequency acoustic responses.This study proposes a new method that can provide customized optimization solutions to meet NVH targets based on the specific needs of different project teams during the initial project stages.This approach innovatively integrates dynamic optimization,Radial Basis Function(RBF),and Fuzzy Design Variables Genetic Algorithm(FDVGA) into the optimization process of Statistical Energy Analysis(SEA),and also takes vehicle sheet metal into account in the optimization of sound packages.In the implementation process,a correlation model is established through Python scripts to link material density with acoustic parameters,weight,and cost.By combining Optimus and VaOne software,an optimization design workflow is constructed and the optimization design process is successfully executed.Under various constraints related to acoustic performance,weight and cost,a globally optimal design is achieved.This technology has been effectively applied in the field of Battery Electric Vehicle(BEV).
