在星地光通信中为了获得较高的性能，需要捕获对准跟踪（APT）系统具有高精度，而卫星振动是影响APT 精度的最主要因素。传统反馈控制对卫星振动的中高频抑制效果较差。针对这种情况，将自适应算法引入前馈控制，设计了最小均方（LMS）和递推最小二乘（RLS）两种自适应反馈复合控制算法。仿真验证了反馈控制、LMS 复合控制以及RLS 复合控制三种算法的性能，结果表明自适应前馈复合控制算法对中高频振动抑制效果明显，采用更快收敛速度以及更高稳态精度的自适应算法可以提高抑制效果。

In order to obtain higher performance in space-to-ground optical communications, the acquisition, pointing and tracking (APT) system needs to have high precision. The vibration of satellites is the most important factor which affects the accuracy of APT. The suppression effect of traditional feedback control is bad in the mediumto-high frequency range of satellites′ vibrations. For this situation, adaptive algorithm is introduced into feedforward control and two kinds of adaptive feedback composite algorithms based on the least mean squares (LMS) and recursive least squares (RLS) algorithms are designed. Feedback control, LMS composite control and RLS composite control are verified by simulations. The results show that the effect of adaptive feedforward composite control is better for the medium-to-high frequency vibrations and the use of adaptive algorithms with faster convergence and higher steady-state precision can improve the suppression effect.