本文介紹了一種基于旋轉(zhuǎn)變壓器-數(shù)字轉(zhuǎn)換器芯片AD2S83 和DSP 的感應(yīng)同步器測角
系統(tǒng)的設(shè)計與實現(xiàn)。本設(shè)計中通過RC 振蕩電路為感應(yīng)同步器轉(zhuǎn)子提供單相激磁信號，定子上感應(yīng)出來的正弦和余弦兩路信號通過儀表放大器的差分放大之后提供給基于跟蹤型測角原理的轉(zhuǎn)換芯片AD2S83，通過FPGA 實現(xiàn)數(shù)字邏輯控制以及地址解碼，將轉(zhuǎn)換后的16 位并行轉(zhuǎn)角數(shù)據(jù)以及方向信號送入DSP 中。本設(shè)計實現(xiàn)了一種穩(wěn)定高效的跟蹤式數(shù)字測角系統(tǒng)，具有很好的擴展性。
關(guān)鍵詞：感應(yīng)同步器；跟蹤型測角；前置放大；數(shù)字信號處理器
Abstract: A design of synchro goniometric system based on resolver-to-digital converter chip
AD2S83 and DSP is introduced in this paper. In this design, a single-phase exciting signal
generated by RC oscillatory circuit is applied to the rotor of synchro. The sine and cosine signals induced on stator are amplified by instrumentation amplifier and connected to the converter AD2S83, which is designed according to tracking goniometry. Digital logic control and address encoding are processed by FPGA, and the converted 16-bit parallel angle data and direction signal are transferred to DSP. This design implements a stable and efficient digital tracking angle measuring system with fine augmentability.
Key words: synchro ; tracking angle measuring; preamplifier; digital signal processor