数字函数变压器的设计

Design of Digital Function Transformer

目前鉴相型微机数显表的研究已经取得了很大的进展 ,但鉴幅型微机数显表因涉及到分立元件型的函数变压器难于集成而发展缓慢 .本文系统论述了采用定尺激励鉴幅方式工作的感应同步器数显装置的关键部分———函数变压器的一种基于D/A芯片的数字实现方法 ,由于其集成度高、数字化等特点 ,为该装置卡态化研究铺平了道路 .同时 ,为感应同步器及其外围电路的一体化设计 。

At present,the research for phase discriminated Digital Readout Display obtains much achievement ,while amplitude discriminated Digital Readout Display is underdeveloped for its function transformer being hard for combination.This thesis describes the operation principle of the linear displacement inductosyn measuring system working on amplitude discrimination in the scale-excited manner,and one method based on D/A chip is proposed for function transformer which is the key component of digital-analog conversion.With its integrative and digital characteristic,the design is satisfying in the further research of the relative card instruments.