一种二元调宽脉冲采集系统的软硬件设计

Design of Software and Hardware of a Two-element Width-adjusted Pulse Acquisition System

由于二元调宽脉冲具有对加矩功率较为恒定以及零偏电流表现为陀螺仪常值漂移等特点，二元调宽脉冲在陀螺仪再平衡回路中具有较好的综合性能而得到广泛应用。介绍了一种基于PC2886的对陀螺仪二元调宽脉冲力矩反馈回路计数脉冲采集系统的软硬件设计过程，详细介绍了采集卡PC2886的使用方法，并给出了WindowsXP环境下用VC＋＋6．0实现的采集部分程序代码。经实际应用表明，此系统能顺利实现对数据的实时采集处理。

Two-element width-adjusted pulse is widely used in the rebalance circuit of gyroscope because it has the characteristics that the power of the torque acting on gyroscope is more constant and zero bias current manifests in constant drift of the gyroscope, and its better synthetic performance as well. This paper introduces the design of software and hardware of counting pulse acquisition system of two-element width-adjusted pulse torque feedback loop of the gyroscope based on PC2886. It elaborates the methods how to use the acquisition board PC2886 and also gives the acquisition program code compiled with VC＋＋6.0 on Windows-XP system. The practical application of this system has achieved a good goal in data real-time acquisition and processing.