关键词: 高效强力铣, 集成制造单元, 摩擦补偿, 切换增益调节, 模糊滑模控制

Abstract: 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.

Key words: efficient and powerful milling, integrated manufacturing cell, friction compensation, switching gain adjustment, fuzzy sliding mode control