激光陀螺的光强稳定控制

Beam intensity stability control for laser gyro

针对国内稳流激光电源与激光陀螺理论要求不符这一问题,对激光陀螺光强稳定控制的理论、意义、难点及实现等各个方面的问题进行详细的讨论,提出抑制三种控制之间耦合效应的解决方案,根据所提方案设计完成基于TMS320F2812的激光陀螺三稳定全数字一体化电路系统,在国内首次实现激光陀螺光强稳定电源。最后用设计的电路系统对某型四频激光陀螺进行了各种实验。结果表明:电路系统在抑制三种稳定控制之间耦合效应方面是有效的、实用的;同时有效抑制了稳流电源下某型四频激光陀螺在高低温实验中零漂的剧烈振荡。理论和实验均证实稳流电源是不符合原理要求的,国内从激光陀螺开始研制至今仍然采用的稳流电源应该更换为光强稳定控制电源。

In view that our current-stabilized power supply doesn＇t meet the requirement of laser gyro＇s theory,this paper discusses the theory,function,realization and difficulty of beam intensity stability control of laser gyro,and puts forward a scheme for restraining the coupling effects between three types of control.Based on the scheme,an all-digital integration circuitry of laser gyro based on TMS320F2812 is designed,and the beam intensity stability power supply of laser gyro is realized.Various experiments on a four-frequency laser gyro are conducted using the designed circuits.The results shows that the digital integration circuit is effective and can be applied in controlling coupling,and the four-frequency laser gyro＇s null shift vibration can be effectively controlled under the high-and low-temperature process.Both the theory and the experiment verify that the current-stabilized power supply does not meet the principle＇s requirements,and should be replaced by the beam intensity stability power supply.