随着测试系统从单一的专用系统向多功能的通用开放系统方向发展,测试软件通用性实现方法的研究受到了广泛的关注。研究设计一套高效的、易于理解的通用测试软件系统成为自动测试领域的迫切需要,为了实现此目的,将重点提出一种测试工程...随着测试系统从单一的专用系统向多功能的通用开放系统方向发展,测试软件通用性实现方法的研究受到了广泛的关注。研究设计一套高效的、易于理解的通用测试软件系统成为自动测试领域的迫切需要,为了实现此目的,将重点提出一种测试工程建模平台(test engineering model platform,TEP)的设计方案。此方案的提出能够大大降低在产品测试信息建模时对传统测试人员编程能力的要求,它将会是维修、测试机载产品过程中的重要工具。该平台将应用于四线制电阻阻值的测量实验,并得出相关的实验数据论证TEP建模平台的可靠性和有效性。展开更多
为研究挖掘机斜盘式轴向柱塞泵的压力、流量特性以及工作过程中出现供油压力不足现象的原因,结合轴向柱塞泵的工作原理,建立泵体主要部件的数学模型.利用多学科领域工程系统仿真高级建模环境(Advanced Modeling Environment for Simulat...为研究挖掘机斜盘式轴向柱塞泵的压力、流量特性以及工作过程中出现供油压力不足现象的原因,结合轴向柱塞泵的工作原理,建立泵体主要部件的数学模型.利用多学科领域工程系统仿真高级建模环境(Advanced Modeling Environment for Simulation of engineering systems,AMESim)软件,建立泵体各部件及整体仿真模型;经过连续调试、运行,合理配置参数,进行系统仿真;以柱塞泵瞬时流量最优时发动机转速和斜盘倾角参数为基准进行优化,并得到接近恒压力特性的结果.该方法可为实际设计提供理论依据和参考,缩短研发周期,加快产品的市场投入.展开更多
For the interaction relation between geological object and engineering object in some fields related to water conservancy and hydropower, a unified modeling idea was proposed. On the basis of summarizing both advantag...For the interaction relation between geological object and engineering object in some fields related to water conservancy and hydropower, a unified modeling idea was proposed. On the basis of summarizing both advantages and disadvantages of existing modeling methods, an automatic unified modeling method of both engineering and geological objects based on tri-prism(TP) model was presented. Through the lossless correction algorithm of deviated drill holes contained in this method, the real deviated drill holes could be corrected into the equivalent virtual vertical ones. And the correction accuracy fully meets the requirements of unified modeling. With the virtual vertical drilling data, TIN construction of both cover layer and other stratums would be built in order to obtain the 3D geological model. Then, the engineering design data would be introduced into the 3D geological model for achieving unified modeling. For this process, the volume subdividing and restructuring principles were introduced to deal with the spatial relationships between engineering object and geological object. In order to improve the efficiency of unified modeling, the reconstruction of TIN based on constraint information was also applied in this method. At last, the feasibility and validation of the unified modeling method as well as its relevant key algorithms were verified by specific experiments and analysis of results.展开更多
文摘随着测试系统从单一的专用系统向多功能的通用开放系统方向发展,测试软件通用性实现方法的研究受到了广泛的关注。研究设计一套高效的、易于理解的通用测试软件系统成为自动测试领域的迫切需要,为了实现此目的,将重点提出一种测试工程建模平台(test engineering model platform,TEP)的设计方案。此方案的提出能够大大降低在产品测试信息建模时对传统测试人员编程能力的要求,它将会是维修、测试机载产品过程中的重要工具。该平台将应用于四线制电阻阻值的测量实验,并得出相关的实验数据论证TEP建模平台的可靠性和有效性。
文摘为研究挖掘机斜盘式轴向柱塞泵的压力、流量特性以及工作过程中出现供油压力不足现象的原因,结合轴向柱塞泵的工作原理,建立泵体主要部件的数学模型.利用多学科领域工程系统仿真高级建模环境(Advanced Modeling Environment for Simulation of engineering systems,AMESim)软件,建立泵体各部件及整体仿真模型;经过连续调试、运行,合理配置参数,进行系统仿真;以柱塞泵瞬时流量最优时发动机转速和斜盘倾角参数为基准进行优化,并得到接近恒压力特性的结果.该方法可为实际设计提供理论依据和参考,缩短研发周期,加快产品的市场投入.
基金Project(BK2012812)supported by the Natural Science Foundation of Jiangsu Province,ChinaProject(51079053)supported by the National Natural Science Foundation of China+2 种基金Project(KYLX_0493)supported by the Scientific Research and Innovation Program for College Graduates of Jiangsu Province,ChinaProject(2014B38814)supported by the Fundamental Research Funds for Central Universities,ChinaProject(2014.1526)supported by the Open Research Fund Program of Key Laboratory of Geological Information of Ministry of Land and Resources,China
文摘For the interaction relation between geological object and engineering object in some fields related to water conservancy and hydropower, a unified modeling idea was proposed. On the basis of summarizing both advantages and disadvantages of existing modeling methods, an automatic unified modeling method of both engineering and geological objects based on tri-prism(TP) model was presented. Through the lossless correction algorithm of deviated drill holes contained in this method, the real deviated drill holes could be corrected into the equivalent virtual vertical ones. And the correction accuracy fully meets the requirements of unified modeling. With the virtual vertical drilling data, TIN construction of both cover layer and other stratums would be built in order to obtain the 3D geological model. Then, the engineering design data would be introduced into the 3D geological model for achieving unified modeling. For this process, the volume subdividing and restructuring principles were introduced to deal with the spatial relationships between engineering object and geological object. In order to improve the efficiency of unified modeling, the reconstruction of TIN based on constraint information was also applied in this method. At last, the feasibility and validation of the unified modeling method as well as its relevant key algorithms were verified by specific experiments and analysis of results.
