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为了提高航空光电稳定平台的抗扰性的同时不增加平台成本,本文在传统平台的电流反馈、速度反馈、位置反馈系统的基础上增加基于跟踪微分器的高增益加速度反馈环节,相对于传统基于差分的加速度反馈系统,基于跟踪微分器的加速度反馈系统改善了其对噪声干扰敏感等问题。通过模拟转台,对平台进行1°、0~2.5Hz正弦扰动测试,结果表明:相对于传统速度反馈平台系统,基于跟踪微分器的加速度反馈系统,超调量减小了约4.9%,视轴稳定精度提高了至少63.4%,平台的过渡过程加快;且该伺服系统结构简单,有较好通用性和实用价值。
In order to improve the immunity of the aeronautical electro-optical stable platform without increasing the platform cost, this paper adds the high-gain acceleration feedback based on the tracking differentiator based on the traditional platform’s current feedback, velocity feedback and position feedback system, Differential acceleration feedback system based on tracking differentiator acceleration feedback system to improve its sensitivity to noise and other issues. The results show that the acceleration feedback system based on tracking differentiator reduces the overshoot by about 4.9% compared with the traditional speed feedback platform system. The visual axis The stability is improved by at least 63.4%, the transition of the platform is accelerated; and the servo system is simple in structure and has good versatility and practical value.