The rotation control technology in the laser gyro strapdown inertial navigation system was studied . the method of realizing closed - loop digital control with rlg located in the strapdown inertial navigation system was discussed . the structure of rotation servo system was introduced . the designing method and process of the digital controller were given . the method of implementing digital controllers by means of computer and software flow were demonstrated . the result of simulation and debugging of this system showed that it fullfills the requirment of the strapdown inertial navigation system . it assures the stability of rotation and solves the problem of striking without increasing the volume and cost of the system 研究激光捷联惯导系统中的转位控制技术.采用捷联惯导系统本身的rlg实现转位系统的闭环数字控制，给出了转位伺服系统的结构组成以及数字控制器的设计方法和设计过程，给出了数字控制器的计算机实现方法和软件流程.仿真及调试结果表明，所设计的转位伺服系统满足捷联惯导系统的要求，既保证了转动的平稳性，克服了到位撞击问题，又不增大体积、增加成本
