论文部分内容阅读
考虑温度及弹簧非线性的影响,基于非线性压磁理论、扩展的J-A模型及动力学分析,建立超磁致伸缩微致动器车削加工系统非线性动力学模型;研究了前馈径向基函数(RBF)逆控制与多模自适应反馈控制方法.提出了以系统运行时间为开关的多模切换控制方案,在系统初始运行时刻采用PD反馈控制器,当时间达到规定的切换时刻采用自适应模糊滑模反馈控制器,使系统全局具有较高的跟踪精度.
Considering the influence of temperature and spring non-linearity, a nonlinear dynamic model of the machining system of the giant magnetostrictive microactuator was established based on the nonlinear pressure-magnetic theory, the extended JA model and the dynamic analysis. The effects of the feedforward radial basis Function (RBF) inverse control and multi-mode adaptive feedback control method, a multi-mode switch control scheme with system operation time as switch is proposed. The PD feedback controller is used at the initial operation of the system. When the time reaches the specified switching time, Adapt to the fuzzy sliding mode feedback controller, the system has a higher global tracking accuracy.