虚拟设备驱动程序 meaning in English
vdd virtual device driver
vxd
Examples
- And , pid controller is designed , pid control arithmetic is programmed , parameters of control system are adjusted online , experiment is researched and the result is analyzed . experimental result showed that programming cmos / rtc , realizing high precision time through program vxd along with pid arithmetic in the interrupt can meet the require of high precision position control of servo electromotor
实验结果表明，硬件电路简单，工作可靠，在windows系统下，通过编写虚拟设备驱动程序，对系统cmos实时时钟( rtc )编程实现高精度定时，在中断程序中加入pid控制算法，可以满足高精度的伺服电机位置控制的要求。 - This dissertation mainly introduces and analyzes a design of data acquisition system of atomic absorption spectrophotometer based on epp the content of which includes : the basic theory and composition of atomic absorption spectrophotometer construction of particular hardware of the data acquisiton system the features of virtual device driver under windows 9x methods of desining the program via the vtoolsd of numega inc . application program edited by using delphi6 by analyzing the standard sample . the data acquisition system is reliable and feasible , which has been illustrated applied to shanghai hp 3200 atomic absorption spectrophotometer
本论文主要介绍了一种epp模式的原子吸收光谱仪的数据采集系统设计。详细阐述了原子吸收光谱原理和仪器结构及具体数据采集系统的硬件实现途径。同时分析了windows环境下虚拟设备驱动程序的编写特点，提供了numega公司vtoolsd开发工具下的虚拟设备驱动程序的具体实现方法。 - Software framework is put forward based on the technical programming the cmos / real timer clock , adopting vtoolsd to programme vxd and real - time position control of servo electromotor is realized . so the key problem of developing nc in the windows is solved
该系统的软件结构通过对系统cmos实时时钟( rtc )编程实现高精度定时硬件中断，利用vtoolsd编写了虚拟设备驱动程序( vxd ) ，实现了对伺服电机的实时位置控制，从而解决了在windows环境下开发数控系统的关键问题。 - The paper integrates the characteristic windows9x , the characteristic virtual device drive and the characteristic number control system . it analyses several important questions of tapping the number control system and realizing the open number control system under the windows9x circumstance , which are the number control system software structure , the choice and check of the high precision timer under the windows9x operation system , the virtual device driver appliance of the number control system software , and the open number control software implement based on the com
论文结合windows操作系统的特性、虚拟设备驱动程序以及数控系统软件的特点，分析了在windows9x环境下开发数控软件和实现开放式数控系统的几个重要问题：数控系统软件结构、高精度的定时器在windows9x操作系统下的选取与考核、虚拟设备驱动程序在数控系统软件中的应用以及基于com组件的开放式数控软件实施方案。