Is defined in a separate file , win32api . vb 类在单独的文件win32api . vb中定义。
Moreover , a hardware environment based on traditional data acquisition technic is builded , and the communication driver between the strain gauge and computer dio card is also realized in two ways , one is coded in win 32 api , and the orther is in matlab language 建立了基于传统测试技术的数据采集系统的硬件环境,并以win32api及matlab两种模式构建了应变仪与pc的接口软件方案。
Thirdly , it searches the possible crosscutting concerns from the subsystems and finds out many crosscutting concerns such as logging , user permission - checking , license checking of the non - basic modules , synchronized accessing of shared memory , managing of db connection pool and managing of win32 apis ’ exceptions . finally , it implements the crosscutting concerns using aspectc + + language and verifies some of them . because of encapsulating the crosscutting concerns with aop , the coupling degree of modules and the difficulty of user ’ s maintenance are decreased , the 接着围绕各个子系统的设计与开发,对各个子系统中可能存在的横切关注点进行了分析和研究,指出了日志处理、用户权限检查、非基本模块的许可证验证、共享内存的同步访问、数据库连接池管理和win32api异常处理这些系统级的横切关注点,并采用aop技术对这些横切关注点进行了单独的模块设计。
Dde is used to transfer the sampling data and the computed parameters as a result between pid parameters calculating program and rslinx which is the monitor of running plc in realtime . the pid parameters calculating process is programed with matalab languge and is called in win32 api programs by using the interface to c language . this method decrease the time of adjusting pid parameter and makes it possible to reduce the vibrating of steel belt 此外,为了实现对面涂烘烤炉内带钢悬垂状态的pid控制,本论文还借助dde (动态数据交换)技术完成了pid控制器参数整定计算程序和allen - bradley的上位机监控软件rslinx相互间数据交换, pid控制器参数整定计算程序的人机交互界面和dde通讯程序块用win32api编程实现,实现参数整定计算的程序块用matlab语言编程实现,通过matlab与c的接口在win32api程序中对其进行调用。