In order to suppress the vibration of large-scale flexible structures which are applied on the spacecraft, a semi-active control method based on fuzzy adaptive SSDV (synchronized switch damping on voltage) technique is proposed. The value of voltage source at the switching moment is adjusted adaptively by using fuzzy logic, in order to improve the stability and control precision of the semi-active control system. The feasibility of this method is verified by two kinds of experiments with typical disturbance conditions. By comparing different adaptive displacement-voltage curves, the fuzzy adaptive method can achieve higher control precision. For the initial displacement disturbance of 10 mm, the fuzzy adaptive SSDV method can increase the system damping ratio from 0.6% to 5.1%. The control effect decreases with the increase of initial displacement. For the disturbance caused by the mechanism at the tip position, the method can effectively shorten the vibration damping time and reduce the displacement from 0.3 mm to 0.04 mm.

中文翻译：

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基于模糊自适应SSDV技术的大型柔性结构半主动振动控制

为了抑制航天器上大型柔性结构的振动，提出了一种基于模糊自适应SSDV（电压同步开关阻尼）技术的半主动控制方法。为了提高半主动控制系统的稳定性和控制精度，采用模糊逻辑对开关时刻的电压源值进行自适应调整。通过两种典型干扰条件下的实验，验证了该方法的可行性。通过比较不同的自适应位移-电压曲线，模糊自适应方法可以获得更高的控制精度。对于10mm的初始位移扰动，模糊自适应SSDV方法可以将系统阻尼比从0.6％提高到5.1％。控制效果随着初始位移的增加而减小。