制导光瞄系统控制转台是一种高精度伺服机构,是激光制导系统的重要组成部分。为适应复杂多变的环境,转台需要满足快速安装使用、便携、响应快、精度高、野外环境适应性强等要求。根据转台的设计要求,完成了制导光瞄系统快速安装高精度控制转台的总体方案设计。其中无刷力矩电机作为驱动部件,旋转变压器作为反馈部件,采取直接驱动方案,消除了齿隙和空回等带来的转角误差。设计了配套的转接板和燕尾结构,并选用高强度、性能优异的钛合金材料,以满足快速装卸、轻量化需求。对伺服转台系统功能进行划分,将系统电路分为供电电路、控制电路、驱动电路三大版块,采用三闭环矢量控制算法实现系统控制。经实物试验验证,系统运行响应快,超调小,稳态误差在±0.005°以内,使用高精度的经纬仪辅助测试定位精度及其重复装调性能,转台满足轴角精度不大于±0.1mil的要求,为同类控制转台设计提供了借鉴。

The control turntable is a high-precision servo mechanism and an important part of the laser guidance system.In order to adapt to complex and changeable environments,the turntable needs to meet the rapid installation and use,portability,fast response,high accuracy,and adaptability to the field environment.The overall design of the steering light guide system is completed in the rapid installation of high-precision control rotary table.Among them,the brushless torque motor is used as the driving component and the rotation transformer is used as the feedback component,and the direct drive scheme is adopted,which eliminates the angle error caused by tooth backlash and air return is designed.The supporting adapter plate and dovetail structure are selected,and the high-strength and excellent performance titanium alloy material is selected to meet the needs of rapid loading and unloading and lightweight.The functions of the servo turntable system are carried out The system circuit is divided into three major sections:power supply circuit,control circuit and drive circuit,and the system control is realized using three closed-loop vector control algorithms.Physical tests have shown that the system has fast response,small overshoot,and a steady-state error within ±0.005°.A high-precision theodolite is used to assist in testing the positioning accuracy and its repeatable adjustment performance.The turntable meets the requirement of an angular accuracy of no more than ±0.1mil,providing a reference for the design of similar control turntables.