激光陀螺电源中数字化负高压源设计  

Digital Negative High Voltage Design for RLG's Power

作　　者：廖丹[1] 杨建强[1] 金鑫[2] 

机构地区：[1]国防科技大学光电科学与工程学院 [2]中国人民解放军91746部队

出　　处：《传感技术学报》2010年第4期513-517,共5页Chinese Journal of Sensors and Actuators

摘　　要：为保证激光陀螺高性能工作,需要采用性能优良的放电电源。而在陀螺电源设计中,负高压源模块是其重要部分。为克服传统模拟电路的弱点,对负高压源进行了数字化设计。使用高性能DSP芯片TMS320F2812,提供脉宽调制(PWM)信号,结合单端反激式功率变换电路、倍压整流电路和低通滤波电路,采用位置式数字PID控制方法,设计了一套数字化负高压源系统。通过仿真和测量,系统能可靠控制点燃陀螺,在短时间(小于20ms)内实现负高压的稳定输出,并长期保持1×10-4的高精度工作。实验结果表明,和传统模拟电路相比,数字化负高压源抗干扰能力增强,陀螺零漂性能有所改善,验证了数字化设计的有效性。To obtain high performance for ring laser gyro（RLG）,a highly qualified power source is needed. In the design of power source for RLG,the negative high voltage module is an important part. For overcoming the disadvantages of traditional analog circuits,a set of digital negative high voltage system is designed in this paper. The system adopts DSP TMS320F2812 and its pulse-width modulation signal （PWM）. It employs the single-ended flyback power transformation circuit,muti-voltage rectifier circuit,lowpass filter circuit and uses the method of positional digital PID control algorithm. By simulation and measurement,RLG can be turned on by the system with high reliability and reach the stable state within 20 ms,then maintain the high accuracy of 1×10-4for long time. The experimental results show that,compared to the traditional analog circuits,the anti-disturbance ability of negative high voltage is enhanced and the drift performance of RLG is improved,which has verified the validity of the digital design.

关 键 词：激光陀螺 脉宽调制 PID控制方法 单端反激 

分 类 号：V241.5[航空宇航科学与技术—飞行器设计]