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D／max－A型X射线衍射仪升级改造项目采用工业控制机原理，设计了与IBM兼容计算机相配的通用接口和相应的软件，实现了在日本理学D／max－A型X射线衍射仪上用IBM－PC机取代原单片机和操作台的升级改造。由此建立的JA型X射线衍射仪微机控制系统对测角仪转角控制精密、准确、可靠，数据采集实时、准确。它不仅保留了原系统的所有功能，保持了仪器原有的精度和分辨率，而且还增加了自动光路零位校正功能，由于采用了IBM兼容计算机，其图形和数据功能更强、更方便，并可按用户要求进行扩展。新建立的系统同时适用D／max－B和C型机以及任何以步进马达驱动的X射线衍射仪的升级改造。这对我国现有1000名台D／max系列X射线行射仪进行升级改造，以IBM－PC机彻底取代与之不相兼容的早期的日本CASIO计算机（单片机式和二级计算机式）控制系统，在X射线衍射仪控制技术上摆脱对原生产厂家的依赖，实现控制系统的国产化、经济化、实用化具有重要的意义和可观的经济效益。
D / max-A X-ray diffractometer upgrade project using industrial control principle, designed compatible with the IBM compatible computer interface and the corresponding software to achieve the Rigaku D / max-A X-ray diffractometer Use IBM-PC to replace the original SCM and console upgrade. The JA X-ray diffractometer computer control system established by this method has precise, accurate and reliable control of the goniometer corner angle and real-time and accurate data acquisition. It not only retains all the original system functions, maintaining the original accuracy and resolution of the instrument, but also adds automatic optical zero correction, due to the use of IBM compatible computer, the graphics and data more powerful and more convenient, And according to user requirements for expansion. The newly developed system is suitable for both D / max-B and C-type machines as well as any upgrade to a stepper-driven X-ray diffractometer. This upgrade our country existing 1000 D / max series X-ray line instrument to IBM-PC completely replace the incompatible early Japanese CASIO computer (singlechip and secondary computer type) control system , X-ray diffraction control technology to get rid of the dependence on the original manufacturer, to achieve control system localization, economic, practical significance and considerable economic benefits.