动载体光学图像视轴稳定技术

Mobile-base Optical Image LOS Stabilization Technology

从传感器视轴稳定技术出发,以机载使用环境为例详细分析了引起视轴不稳定的各种振动源,对视轴稳定原理进行了深入探讨.通过分析传感器分辨率可以看出视轴稳定的作用,并提出三轴角度稳定系统是比较完善的.详细论述了视轴稳定方法,主要是被动稳定和主动稳定方法,并对这2种方法的原理进行全面分析.被动稳定系统主要是弹簧、阻尼系统,可以有效衰减高频振动.主动稳定系统主要是应用陀螺技术进行闭环稳定控制,用于消除低频运动和振动的影响.在实际应用中,常采用这2种方法的组合方法,可以实现秒级的视轴稳定精度.

For introducing the technology LOS stabilization of sensor, the vibration sources that cause disturbances in an airborne environment and research the principle of LOS stabilization are analyzed. By analyzing the resolution of sensor, we realize the function of LOS stabilization and suggest that full three axes stabilized system is perfect. Methods of LOS stabilization include passive and active methods. Passive stabilization techniques involve spring and damp systems, which are used to eliminate high frequency motions. Active stabilization techniques use the technology of the gyroscopes in order to realize close loop control, which are used to eliminate low frequency motions and vibration. In real systems, we have achieved the precision of LOS stabilization with second by combining two methods.