Nanoscale trajectory planning with flexible Acc/Dec and look-ahead method

The importance of look-ahead and flexible acceleration and deceleration (Acc/Dec) technology to high-precision and high-speed computer numerical control (CNC) technology was firstly discussed; the massive data computing and high-precision requirement problem in NC blocks’ trajectory planning was revealed. Motived by this, the flexible ACC/DEC and look-ahead trajectory planning method was systematically studied. A four-level trajectory planning strategy including position, velocity, acceleration, and jerk planning was addressed in detail. A corner speed control method suitable for any multi-axis was expounded, and a classification method in forward speed planning was researched to describe various speed profiles. On the above basis, a nanoscale trajectory planning method using the long blocks segmentation method was proposed. The overall effectiveness of the proposed strategy is demonstrated by the simulation and machining of a group of identical impellers.

[1]  Javad Jahanpour,et al.  A novel acc-jerk-limited NURBS interpolation enhanced with an optimized S-shaped quintic feedrate scheduling scheme , 2014, The International Journal of Advanced Manufacturing Technology.

[2]  Suk-Hwan Suh,et al.  Theory and Design of CNC Systems , 2008 .

[3]  Yusuf Altintas,et al.  High speed CNC system design. Part I: jerk limited trajectory generation and quintic spline interpolation , 2001 .

[4]  Lin Wang,et al.  A look-ahead and adaptive speed control algorithm for high-speed CNC equipment , 2012 .

[5]  Meng-Shiun Tsai,et al.  Development of integrated acceleration/deceleration look-ahead interpolation technique for multi-blocks NURBS curves , 2011 .

[6]  Shen Dong,et al.  Investigation on AFM-based micro/nano-CNC machining system , 2007 .

[7]  Miao Hu,et al.  Bézier polygons for the linearization of dual NURBS curve in five-axis sculptured surface machining , 2012 .

[8]  Tao Yu,et al.  A Study of Intelligent Integrated Nano CNC System Based on Standard , 2006, 2006 2nd IEEE/ASME International Conference on Mechatronics and Embedded Systems and Applications.

[9]  R. Zanasi,et al.  Third order trajectory generator satisfying velocity, acceleration and jerk constraints , 2002, Proceedings of the International Conference on Control Applications.

[10]  Jiang Yong-xiang.  Generalized look-ahead feedrate planning algorithm , 2013 .

[11]  Vijay K. Jain,et al.  Editorial by V. K. Jain, I.I.T. Kanpur (India) for the special issue on “Micromanufacturing” , 2015 .

[12]  Lin Li,et al.  Understanding the process parameter interactions in multiple-pass ultra-narrow-gap laser welding of thick-section stainless steels , 2013 .

[13]  Chen Jian-duan.  Adaptive NURBS interpolation algorithm with look-ahead function based on S-shape acceleration/deceleration , 2013 .

[14]  Yong Tao,et al.  Look-Ahead Algorithm with Whole S-Curve Acceleration and Deceleration , 2013 .

[15]  H. Ding,et al.  A real-time look-ahead interpolation methodology with curvature-continuous B-spline transition scheme for CNC machining of short line segments , 2013 .

[16]  Han Ding,et al.  A parametric interpolator with minimal feed fluctuation for CNC machine tools using arc-length compensation and feedback correction , 2013 .

[17]  Yuwen Sun,et al.  An adaptive feedrate scheduling method of dual NURBS curve interpolator for precision five-axis CNC machining , 2013 .

[18]  Claudio Melchiorri,et al.  Trajectory Planning for Automatic Machines and Robots , 2010 .