基于FPGA的测角脉冲细分电路的设计

对传统的数字化转角测量方法进行了简要介绍,提出了一种能够提高测角分辨率的脉冲细分技术,并结合激光陀螺输出信号对该方法进行了误差分析。接着利用FPGA对此项技术进行了硬件实现,具体描述了电路各部分的工作原理及程序设计,并使用QuartusⅡ软件对电路进行了仿真。最后,对某型激光陀螺输出信号进行周期采样,对电路进行了实验验证。结果表明该技术能够有效提高转角测量分辨率,电路工作稳定,取得了预期的效果。

Design of FPGA-based Pulse Subdivision Circuit for Angle Measurement

The traditional method of digitalized angle measurement is introduced.The pulse subdivision method which can improve the resolution of angle measurement is brought forward.The error analysis for the method is performed in combination with the output signal of a laser gyro.The hardware used in this technology is realized with FPGA.The working principle and program design of every part of the circuit is described.The circuit is simulated with Quartus II.The output signal of some type RLG are sampled with the pulse subdivision circuit.The experiments show that angular resolution is improved evidently,the circuit works stably and obtains expectant effect.