激光陀螺电路的数字一体化及其实现

Digital integration for laser gyro circuits

为实现激光陀螺电路的一体化、数字化和高度集成化,在四频激光陀螺各部分电路的原理基础上,采用单片DSP完成了激光陀螺高压稳流、稳频及计数等全部控制与运算功能,实现了激光陀螺电路的数字一体化。激光陀螺数字一体化电路在室温下进行了长时间的测试,其单臂放电电流稳流精度优于1×10-4,两臂放电电流差值的稳定精度优于2×10-5,稳频精度(光强差/光强和)优于2×10-6。实验结果表明,数字一体化电路的性能已经达到了现有激光陀螺各部分电路的性能。激光陀螺数字一体化电路在电磁兼容、抗干扰、低功耗、集成度等方面具有显著的优势,并且由于陀螺的各工作参量在同一电路中,便于协调控制各参量使激光陀螺工作在最佳状态,有利于进一步提高激光陀螺的性能。

For realizing digitalization, integration and a/l-in-one for all the Laser Gyro work circuits, based on the four-frequency Laser Gyro circuits＇ principle, using only one DSP to accomplish the control and calculation for the high-voltage and current control, frequency control, and counter operation, the Laser Gyro digital integration circuit is realized. For long time test under the room temperature condition, the digital integration circuit performance is as follows： the current control precision of any arm can be better than I x 10-4, the current difference control precision of the tow arms can be better than 2×10-5, and the frequency control precision can be better than 2×10-6. The test result shows that the digital integration circuit＇s performance has reach that of the available circuits. The digital integration circuit is better in compatibility, anti-jamming, low-dissipation and integration. Due to all parameters of the Laser Gyro are in one processor, the Laser Gyro performance can be improved by controlling all parameters in the best state of the Laser Gyro.