S-model speed planning of NURBS curve based on uniaxial performance limitation

Li, Jiangang, Liu, Ye, Li, Yanan and Zhong, Ganggang (2019) S-model speed planning of NURBS curve based on uniaxial performance limitation. IEEE Access, 7. pp. 60837-60849. ISSN 2169-3536

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Abstract

As more complex curves are used in current productions, curve speed planning has become a key technique to overcome the bottleneck of high-speed and high-precision computerized numerical control (CNC) systems. This paper first establishes the model of particle velocity, acceleration and jerk in Cartesian coordinate system, and then improves the uniaxial performance limit algorithm.We set up a real-time speed planning process of spline curves, design a S-model look-ahead algorithm, simplify the S-model speed planning algorithm, and achieve real-time non-uniform rational B-splines (NUBRS) curve S-model speed planning based on uniaxial performance limitation. Simulation results show that all the actual interpolation velocity, acceleration and jerk under the proposed method meet the preset single-axis limit. Experimental results show that the tracking performance under the proposed method has been significantly improved compared with that under the small line segments method. Compared with the NUBRS curve trapezoidal model speed planning, the vibration spikes during machining can be eliminated.

Item Type: Article
Keywords: NURBS curve speed planning, S model speed planning, uniaxial performance limitation
Schools and Departments: School of Engineering and Informatics > Engineering and Design
Research Centres and Groups: Dynamics, Control and Vehicle Research Group
Depositing User: Lucy Arnold
Date Deposited: 15 May 2019 10:47
Last Modified: 01 Jul 2019 13:16
URI: http://sro.sussex.ac.uk/id/eprint/83750

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