降噪干扰观测器在机载光电稳定平台上的应用

Application of Noise Reduction Disturbance Observer in Airborne Electro-Optical Stabilized Platform

针对机载环境下控制系统受到干扰和噪声的双重影响,而传统干扰观测器难以有效抑制噪声影响的问题,引入了一种降噪干扰观测器,能同时抵抗扰动和噪声的影响。首先,介绍了传统干扰观测器的原理,分析了传统干扰观测器不能抑制噪声影响的原因;然后,分析了降噪干扰观测器的原理,发现通过选择合适的滤波器,系统能同时获得比较好的抗扰和抗噪能力;最后,设计了控制器和降噪干扰观测器,并进行了仿真实验,仿真结果证实了理论分析,系统同时具有抗扰和抗噪能力。

Aiming at the problem that the airborne control system is affected by both disturbance and noise,and the traditional disturbance observer is difficult to effectively suppress the noise,a noise-reducing disturbance observer is introduced,which can resist the influence of disturbance and noise at the same time.Firstly,the principle of the traditional disturbance observer is introduced,and the reason why the traditional disturbance observer can not suppress noise is analyzed.Then,the principle of the noise reduction disturbance observer is analyzed,and it is found that the system can obtain better anti-disturbance and anti-noise capabilities by selecting appropriate filter.Finally,the controller and the disturbance observer are designed,and the simulation experiments are carried out.The simulation results confirm the theoretical analysis that the system has both anti-disturbance and anti-noise capabilities.