无人机系统重要的侦察设备是光电载荷。为了使光电载荷获得清晰的图像, 提出了新的控制策略, 以抑制视轴的扰动。首先, 以两轴两框架光电载荷为研究对象, 分析了其结构和工作原理; 然后, 分析了影响视轴稳定精度的扰动因素并将其分类; 接着, 提出了双速度环控制策略, 设计了自抗扰稳定控制器; 实验研究表明, 采用该视轴稳定技术的光电载荷, 其扰动抑制的效果能够达到技术指标要求。

The opto-electronic load is an important reconnaissance equipment of the UAV system.To obtain a clear image, a new opto-electronic load control strategy is proposed for inhibiting the disturbance of visual axis.First, the structure and working principle of the two-axis and two-frame opto-electronic load are introduced.Then, analysis and classification are made to the disturbance factors affecting the stability of the visual axis.The dual rate-loop control strategy and an active disturbance rejection controller are applied on the opto-electronic load.The experimental results show that, the opto-electronic load using the proposed line-of-sight stabilization strategy can satisfy the technical requirements of disturbance rejection.