中文摘要：

针对非线性摩擦对整体叶盘高效强力铣集成制造单元定位精度的影响,提出一种基于模糊切换增益调节的滑模控制方法.通过事先给定系统的期望运动轨迹,设计出滑模控制的切换函数,以保证系统的初始状态在滑模面内.采用模糊推理系统,根据滑模到达条件对切换增益进行动态调整,并利用切换增益消除干扰项,从而消除抖振.仿真分析和实验结果均表明,基于模糊切换增益调节的滑模控制具有控制精度高、鲁棒性强、抑制干扰能力强等优点,能够提高叶片型面尺寸精度和表面一致性,降低表面粗糙度,减小残余应力并提高加工效率.

英文摘要：

Aiming at the influence of nonlinear friction on the positioning precision of blisk integrated manufacturing cell with efficient and powerful milling,a kind of Sliding Mode Control （SMC） based on fuzzy switching gain adjustment was proposed.By defining the expected trajectory of system in advance,the switching function of SMC was designed to ensure that the system initial state was within the sliding surface.By adopting the fuzzy inference system,the switching gain was dynamically adjusted when the sliding mode reached condition and the switching gain was used to remove the interference,thus,the chattering were eliminated.Simulation analysis and experimental results showed that the SMC based on fuzzy switching gain adjustment had advantages such as high control precision,strong robustness,strong interference suppression ability,and it could improve the blade profile dimensional precision and surface consistence,reduce the surface roughness,decrease the residual stress and improve the machining efficiency.