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智能空间刚架作为太空望远镜支撑架是一种新型智能空间结构.为抑制刚架系统在运动过程中产生的振动,"文章提出了一种基于自抗扰控制的非线性模糊自抗扰控制理论,并设计出模糊自抗扰控制器.首先采用有限元方法计算出空间刚架的质量矩阵、阻尼矩阵和刚度矩阵,进而建立系统模型并设计出自抗扰控制器以实现对系统振动的抑制.基于普通自抗扰控制器,利用模糊推理在线整定控制器中非线性状态误差反馈的参数.该控制器不依赖于被控对象的精确数学模型,具有良好的控制性能,同时参数的在线自整定简化了调参难度.仿真实验验证了所提方法的有效性.
As a new type of smart space structure, the space frame of smart space telescope is a new intelligent space structure.In order to restrain the vibration generated by the rigid frame system during the movement, the paper presents a nonlinear fuzzy ADRC based on ADRC Theory and design a fuzzy auto-disturbance rejection controller.First, finite element method is used to calculate the mass matrix, damping matrix and stiffness matrix of the spatial rigid frame, then the system model is established and the auto-disturbance rejection controller is designed to suppress the system vibration Based on the ordinary auto disturbance rejection controller, the parameters of nonlinear state error feedback are set online using fuzzy inference. The controller does not depend on the precise mathematical model of the controlled object and has good control performance. Meanwhile, the online parameters Tuning simplifies the difficulty of tuning, simulation results show the effectiveness of the proposed method.