三轴稳定航测正射云台设计与实现  

Design and Realization of a Three-Axis Stabilized Orthographic Platform for Aerial Survey

作　　者：袁红卫[1] 闵志方[1] 张建民[1] 

机构地区：[1]华中光电技术研究所一武汉光电国家实验室,武汉430074

出　　处：《电光与控制》2013年第6期96-99,共4页Electronics Optics & Control

摘　　要：设计了一种用于航空摄影测量的三轴稳定正射云台。该云台搭载高清数码相机、微型电视等传感器,采用角速率闭环和惯性指向位置闭环的控制方式实现惯性稳定下的正射观察与拍照。与传统方位环安装陀螺,并依赖机载惯性导航信息不同,该云台采用独立的微机电GPS组合导航系统实现运动扰动隔离及正射指向。推导了组合导航系统安装于外壳实现稳定所需的角度、角速度稳定补偿方程,详细描述了控制管理模块、图像处理单元、测角模块、稳定伺服模块等控制组件的设计原理、方法以及模型。测试结果表明稳定后的传感器光轴能够垂直于地水平面,正射误差能够控制在3°以内,保证航向重叠率和旁向重叠率,防止出现航空摄影漏洞。A high-definition three-axis stabilized orthographic barrel was designed for aerial survey. This barrel carried an （HD） digital camera and a micro-TV, and realized orthographic observation and photograph with inertial stability by using angular speed closed-loop control mode and inertial pointing position closed-loop control mode. Different from integrated navigation traditional gyro installation in bearing ring, this barrel used independent MEMS GPS system to realize disturbance isolation and orthographic direction. The desired angle position and angle speed compensation equation when the integrated navigation system was installed on the barrel shell were derived, and the design principle, method and model of control modules were presented. The testing results showed that the stabled line of sight is perpendicular to the ground, the orthographic error can be controlled within 3°, which can guarantee the longitudinal and transverse overlapping rate, reduce the appearing of aerial photograph hole.

关 键 词：航空摄影测量 三轴稳定 陀螺稳定 正射云台 

分 类 号：V271.32[航空宇航科学与技术—飞行器设计]