小型无人直升机增稳试验机载系统A/D转换实现

Airborne system A/D transform realization of small-size unmanned helicopter's stability augmentation testing system

针对小型无人直升机的机载系统俯仰倾斜姿态及方向信号采集问题,本文采用带八路10位A/D转换的STC12C5410单片机编程来实现机载系统俯仰倾斜姿态及方向信号采集,给出了直升机A/D转换C程序关键代码。同时本文还指出并纠正了宏晶科技"STC12C5410AD系列单片机器件手册"中的错误。地面联机测试表明,增稳试验系统能够准确地采集遥控接收机的控制信号和俯仰、倾斜、方向信号,并传输试验所需数据,图形和数据显示均正常,为最终实现无人直升机的增稳控制奠定了基础。

To be aimed at the problem about signal collection of the pitch and lateral attitude of small-size Unmanned helicopter＇s airborne system and direction, this paper give a resolution about how to realize those signal collection by making program with STC12C5410 single-chip, which has 8 10 bit A/D converters, and also show important C language code about helicopter＇s A/D transforr~ At the same time,this paper correct mistake in＂STC12C5410AD series single- chip manual＂ as well, which is written by Hongjing Technology Co, Ltd. Ground online tests show that the stability augmentation testing system can accurately collect pitch, incline signals and control signals from the receiver and transmit required testing data. Graphs and data display are normal. Thus the foundation has been built up for the final unmanned helicopters stability augmentation control.