直线位移微机自动测量系统

为了在空间遥感详查相机研制工作中准确、有效地评价像移补偿系统的像移补偿效果,提出了采用分辨率为0.4μm的光栅尺作为像移补偿片台直线位移的检测元件,采用微机实现直线位移自动测量的检测方法并给出了详细设计思路,包括系统的硬件设计和软件设计。系统具有手动采样、定时采样、外同步采样等多种位移数据读取方式,并可以实时计算出像移补偿片台的位移、速度和速度误差。在实际工程检测应用中实现了极限误差优于0.5μm的检测精度。

Automatic Computer Measurement System for Linear Displacement

The method of how to use computer parallel interface and interrupt technology to design automatic measuring system of linear displacement is introduced in detail by using a grating meter with the resolution power of 0.4μm and the designs of hardware and software. The system can read the output data of grating meter by three methods: out trigger reading, inner timer trigger reading and manual reading. The maximum displacement measuring error of this system is 0.5μm.