纤维铺放技术是实现复合材料"低成本"制造的重要手段之一,同时也是近年来发展最快、最有效的先进制造技术。铺放设备的丝束铺放工作主要由铺放头完成,因此丝束增减控制是铺放控制系统研究的重点。通过分析铺放头结构、铺放控制系统结构、单路丝束的工作循环和丝束在重送、切断、铺放状态下夹紧模块、重送模块、切断模块的工作情况,总结出丝束增减控制程序设计的基本原则。同时提出了两种丝束增减控制方法:丝束增减控制与运动控制整合的方法和丝束增减控制独立于运动控制的方法。通过对这两种控制方法的比较分析,得出丝束增减控制独立于运动控制的方法具有方法简单、可降低铺放软件开发难度的特点。最终通过铺放试验验证了丝束增减控制方法的正确性及有效性。

Fiber placement technology is key to producing composite structures, and it is also the fastest growing and most efficient composite manufacturing technology. Control of tows increase or decrease is the focus in the study of a placement control system because the tow placement of a fiber placement machine is mainly performed by the fiber placement head. Through analyzing the operating cycle of a single tow and the operating mode of the clamp, the restart and cut module in tows restart, the cut and fiber placement working condition, fundamental principles of program designing are proposed. A comprehensive approach of tows increase or decrease and motion control is presented together with an independent approach of tows increase or decrease and motion control. A comparison of these two control schemes shows that the second scheme is more convenient and practical. Finally the experiment results demonstrate that this method is valid and efficient.