按照测绘领域专用、性价匹配的思想,设计并实现了一套低成本的低空遥感小型三轴陀螺稳定平台.该系统以自主设计的三轴铝制云台为平台,以微电子机械三轴角速率陀螺、线加速度计和磁阻传感器为基础,配置ARM CortexTM-M3 32位核心微处理器,以数字钛合金舵机为驱动输出,具有体积小、精度高、成本低、自主稳定与罗差自检校等特点.实验表明,稳定平台的航向角测量精度可达1°,俯仰角和横滚角可达0.1°,机械控制精度优于0.1°,驱动响应时间小于20 ms,可以满足小区域大比例尺地形图立体测绘对稳定平台的要求.%A low-cost small 3-axis gyro-stabilized pan-tilt for low-altitude remote sensing was designed and realized. The system was based on a set of self-designed three-axis aluminum pan-tilt, which was integrated MEMS three-axis angular rate gyro, three-axis accelerometers and three-axis magnetic sensor with 32-bit Cortex ?-M3 ARM microprocessor, and three digital servos with titanium gears was as the drive output. This system has the advantages of small size, high precision, low-cost, self-stability and auto magnetic deviation correction. The result of the experiments showed that the accuracy of heading angle measurement, pitch angle and roll angle is up to 1°, 0.1° and 0.1° respectively; the mechanical control accuracy is better than 0.1° and the responding time of the servos to the control instruction is within 20 ms. This system is basically met the requirements of larger scale stereo-plotting in small areas.
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