Multi-axis Motion Control Method of Complex Trajectory for High-Speed Machining

摘要：

　　In order to solve high-speed numerical control machining problem of complex surface and trajectory,the control model of multi-axis smooth motion is constructed from the view of process integration control of speed programming,interpolation control,position tracking and so on.The optimization model of velocity programming and acceleration-deceleration control is constructed by using mathematical programming method.A look-ahead speed preprocessing and flexible acceleration-deceleration control algorithm is proposed by simplifying the optimization model,and the optimization effect and real-time performance can be both considered.To overcome the nonlinear influence in high-speed feed system,a new high-speed position tracking algorithm is proposed by introducing feed forward control of acceleration and velocity,condition integral and anti-saturation parts.An embedded numerical control system based on dual-core processor is presented and realized,and the structure can guarantee the six-axis interpolation period requirement of 0.125 ms.The developed high-speed numerical control system has already been successfully applied to five-axis gantry type high-speed machining center.The field data show that the system has good stationarity under high-speed motion and can meet the control requirement of complex trajectory of impeller and so on.

关键词： High-speed machining Complex trajectory Motion control Numerical control system

作者: CAO Jianfu WANG Lin ZHANG Jialiang

作者单位: The States Key Laboratory for Manufacturing Systems Engineering,Xian Jiaotong University,Xian 710 School of Information Science and Technology,Northwest University,Xian 710127,China The States Key Laboratory for Manufacturing Systems Engineering,Xian Jiaotong University,Xian 710

会议类型: 国际会议

会议名称: The 33th Chinese Control Conference第33届中国控制会议

会议地点: 南京

会议语种:英文

页码: 8021-8026

在线出版日期: 2014-07-28（万方平台首次上网日期，不代表论文的发表时间）