适用于高精度惯性平台系统的精密加矩电路设计与实现

精密加矩电路通过给陀螺力矩器施加电流，驱动惯性平台系统相对惯性空间进行转动，其精度精度直接关系到惯性平台系统自标定与自对准精度能否实现。本文针对高精度惯性平台系统的需求，采用大电流粗加矩和小电流精加矩两种加矩电路的方式，兼顾了平台系统快速转位以及精确电流控制的要求。采用数字控制的二元调宽电路实现电流的精确控制。试验结果表明，精密加矩电路可以满足高精度平台系统自标定和自瞄准的要求。

Design and Realization of Precise Torquing Circuit for High Accuracy PINS

The precise torquing circuit is used to apply accurate current to the gyros, this may cause the platform inertial navigation system to turn in the inertial space. So, the accuracy of torquing circuit will determine the accuracy of Self-Calibration and Self-Alignment. In this paper, a circuit design is discussed, which give consideration both to quick rotation and accurate rotation. Pulse Width Modulation which is controlled by digital bus, is used to improve the accuracy of current output. Both the analysis and test show that, the design can achieve the accuracy current output, which is necessary to the Self-Calibration and Self-Alignment of the high accuracy platform inertial navigation system.