基于FPGA的二元脉冲调宽力反馈电路

摘要

本文提出一种用于某单自由度液浮积分陀螺的二元脉冲调宽力反馈电路方案,并给出方案设计的具体实现过程、仿真分析以及实测结果.通过对比在同样试验条件下的测试数据,本文设计的基于FPGA二元脉冲调宽力反馈电路的测试精度略高于常用的数字电压表检测方法,因此可独立完成高精度测试而不需依赖其他辅助测试仪器.而且该电路采用数字化FPGA方案,针对不同测试要求,可以较灵活提高脉冲分辨率和采样频率,测试状态更接近陀螺的使用条件.%A kind of binary width-demodulated pulse rebalance loop employed in single-degree-of-freedom rate-integrating gyro test was implemented in this paper.The detail of design procedure was discussed,meanwhile,the simulations and test data were analyzed.The data indicate that the rebalance loop,which achieves test and evaluation without any other auxiliary apparatus,is more slightly precise than the DMV test based on the same condition.And what's more,the rebalance loop based on FPGA,which could provide higher resolution and sample frequency,is in high availability applications.