自整角机/数字转换器及其外围电路设计

自整角机/数字(S/D)转换器模块采用跟踪反馈转换技术,输入信号为三线自整角机与参考信号,输出信号为二进制码,内部含有与系统接口的逻辑电路和三态数据锁存器,参考信号引入后转换为与轴角成比例的正余弦交流电压.采样后经A/D转换和时内部地址总线信号译码,控制轴角数字信号.自检时两继电器受自检测信号控制交换输入S/D转换器模块的三个同步器信号,由系统分析输入的数字信息,以判断存在故障否.

Autosyn/Digital Converter and Peripheral Circuits Design

Autosyn/digital converter (S/D) in airborne heading and attitude system adopts following feedback conversion technique, its input is 3 line autosyn and reference signal, its output is a binary system code, and in its inner part, there are some logic circuits and 3 state data locking register. when the reference signal inputs, sine and cosine AC signal proportional to some angle is formed. after sampling, the angle digital signal is controlled with A/D conversion and bus signal decode. When self checking, whether some break-downs exists can be judged from system analysis digital information.