Chemical composition analysis, mechanical property testing, microstructure examination and SEM analysis were used to analyze the crack of aero-compressor disk. The results showed that the poor machining and maritime climate were the main factors to cause the disk early cracking.

MIDAS是Delphi为开发多层应用系统提供的透明中介引擎,在对MIDAS技术进行分析和研究后,将其应用到了机动车安全性能测控分布式管理系统中.利用MIDAS将该系统设计成三层的结构,即在数据库服务器和客户机之间增加了应用程序服务器.使得客户机与数据库的连接、客户机对数据库的操作都由作为中间层的应用程序服务器完成.利用MIDAS的自动化功能还设计了一种客户机之间共享信息管理机制,从而增强了系统的安全性、可维性,提高了系统的运行效率.

采用DDS(直接数字频率合成)技术设计了任意波形发生器.系统时序和逻辑电路主要由一块CPLD芯片来完成,软件构建于LabWindows/CVI这一专用虚拟仪器软件开发平台之上,其特点是界面友好,操作方便,产生的波形失真度小,频带宽,频率分辨率高.

To monitor various status of Automobile testing system, increase speed of fault diagnosis when it works. Using Socket connect Automobile testing system and monitor computer with Internet, implementing data transfer and analyse, using ActiveX and JAVA Applet implementing client display.introducing a remote monitor system for Automobile testing system based on Internet, also presenting its key techniques and practical implementation by Web Database and Socket techniques. The remote monitor system for Automobile Testing System based on Internet in certain city proved that this method can implement remote data transfer, and also can diagnosis and monitor condition of equipment in any other place.

The MAX1457 is a special sensor signal processor optimized for piezoresistive sensor calibration and compensation. Achieving a total error factor within 0 2% of the sensor's repeatability errors, the MAX1457 compensates temperature errors and non-linearity of silicon piezoresistive sensors. The choice and calculation of parameters and a series of steps for compensating temperature errors of sensors are needed for this operation. The principle and compensation process of MAX1457 are discussed in this paper based on which the software of compensating temperature errors is designed. Each step of compensation is guided by accessorial explain and the automatic calculation and automatic adjusting of parameters are realized. The system has simplified the process of sensor compensation greatly.

VxD, the kernel technology of the driver of A/D board is introduced in this paper. An example is given to show how to make the software work properly and how to use the SoftIce to debug software's bug.

How to use Delphi to start MatLab engine and how to exchange data between Delphi and LatLab is discussed in this paper. This method can make Delphi more powerful for data processing.