The functionally graded thermal barrier coatings （FG-TBCs） with 80%ZrO2-13%CeO2-7%Y2O3 （C-YSZ）/NiCoCrAlY were prepared using a recently developed supersonic plasma spraying（S-PS） with dual powder feed ports syst...The functionally graded thermal barrier coatings （FG-TBCs） with 80%ZrO2-13%CeO2-7%Y2O3 （C-YSZ）/NiCoCrAlY were prepared using a recently developed supersonic plasma spraying（S-PS） with dual powder feed ports system. The thermal shock experiment of FG-TBCs specimens was carried out by means of the automatic thermal cycle device, in which the samples were heated to 1200℃ by oxygen-acetylene flame jet then water-quenched to ambient temperature. The temperature—time curves of specimens and photographs can be watched on-line and recorded by a computer during the test. The results show that the totally 1mm-thick FG-TBCs have excellent thermal shock resistance due to the fact that the coatings have no any peeling-off after 200 thermal cycles. The microstructures and morphologies of FG-TBCs were characterized and analyzed by SEM.展开更多
为了实时掌握农业机械自动导航时运行状态的相关参数,并根据监测参数作出相应的调整动作,本文以Visual Studio 2008为开发平台,开发了一套高速插秧机自动导航的运行参数远程监测系统软件。该软件功能主要包括信号检测、数据通讯、控制...为了实时掌握农业机械自动导航时运行状态的相关参数,并根据监测参数作出相应的调整动作,本文以Visual Studio 2008为开发平台,开发了一套高速插秧机自动导航的运行参数远程监测系统软件。该软件功能主要包括信号检测、数据通讯、控制决策、数据显示和数据存储。系统采用Visual Studio 2008中Visual Basic.net 2008语言进行开发,将远程采集的各监测数据经由GSM网络进行无线传输到上位机;并采用Serial Port控件来进行串行通讯,完成PC机与GSM模块之间数据的交换,并对相应控制动作进行相应性能仿真。展开更多
单片数字信号处理器(Digital Signal Processor,DSP)的处理能力无法满足某飞行控制系统的需求。为此采用两片浮点DSP处理器TMS320C6713B构成高速并行信息处理系统。为实现双DSP之间的高速通信,系统利用DSP集成的HPI模块进行双DSP的互连...单片数字信号处理器(Digital Signal Processor,DSP)的处理能力无法满足某飞行控制系统的需求。为此采用两片浮点DSP处理器TMS320C6713B构成高速并行信息处理系统。为实现双DSP之间的高速通信,系统利用DSP集成的HPI模块进行双DSP的互连。介绍了系统的整体框架及软件设计,并对基于HPI互连的关键技术加以详细说明。实践证明此系统通信速率高、处理速度快、系统体积小、功耗低。展开更多
文摘The functionally graded thermal barrier coatings （FG-TBCs） with 80%ZrO2-13%CeO2-7%Y2O3 （C-YSZ）/NiCoCrAlY were prepared using a recently developed supersonic plasma spraying（S-PS） with dual powder feed ports system. The thermal shock experiment of FG-TBCs specimens was carried out by means of the automatic thermal cycle device, in which the samples were heated to 1200℃ by oxygen-acetylene flame jet then water-quenched to ambient temperature. The temperature—time curves of specimens and photographs can be watched on-line and recorded by a computer during the test. The results show that the totally 1mm-thick FG-TBCs have excellent thermal shock resistance due to the fact that the coatings have no any peeling-off after 200 thermal cycles. The microstructures and morphologies of FG-TBCs were characterized and analyzed by SEM.
文摘为了实时掌握农业机械自动导航时运行状态的相关参数,并根据监测参数作出相应的调整动作,本文以Visual Studio 2008为开发平台,开发了一套高速插秧机自动导航的运行参数远程监测系统软件。该软件功能主要包括信号检测、数据通讯、控制决策、数据显示和数据存储。系统采用Visual Studio 2008中Visual Basic.net 2008语言进行开发,将远程采集的各监测数据经由GSM网络进行无线传输到上位机;并采用Serial Port控件来进行串行通讯,完成PC机与GSM模块之间数据的交换,并对相应控制动作进行相应性能仿真。
文摘单片数字信号处理器(Digital Signal Processor,DSP)的处理能力无法满足某飞行控制系统的需求。为此采用两片浮点DSP处理器TMS320C6713B构成高速并行信息处理系统。为实现双DSP之间的高速通信,系统利用DSP集成的HPI模块进行双DSP的互连。介绍了系统的整体框架及软件设计,并对基于HPI互连的关键技术加以详细说明。实践证明此系统通信速率高、处理速度快、系统体积小、功耗低。
