Contouring controller design based on iterative contour error estimation for three-dimensional machining

Mohammad, Abdelkhalick; Uchiyama, Naoki

Abstract

Recently, there has been a growth of interest in high precision machining in multi-axis feed drive systems, subjected to problems such as friction, cutting force and incompatibility of individual driving axis dynamics. To guarantee high precision machining in modern computer numerical controlled (CNC) machines, CNC's controllers do its control efforts to reduce contour error. One of the common approaches is to design a controller based on the estimation of contour error in real time. However, for complex contours with severe curvatures, there is a lack of effective algorithms to calculate contour errors accurately. To address this problem, this paper proposes an accurate contour error estimation procedure for three-dimensional machining tasks. The proposed method is based on an iterative estimation of the instantaneous curvature of the reference trajectory and coordinates transformation approach, and hence, it is effective for complex reference trajectories with high curvatures. In addition, contour error controller is presented to reduce the estimated contour error. The feasibility and superiority of the proposed model as well as contour error controller are demonstrated through experimental system using a desk-top three-axis CNC machine. © 2011 Elsevier Ltd.

Citation

Mohammad, A., & Uchiyama, N. (2011). Contouring controller design based on iterative contour error estimation for three-dimensional machining. Robotics and Computer-Integrated Manufacturing, 27(4), 802-807. https://doi.org/10.1016/j.rcim.2011.01.001

• Journal Article Type: Article
• Acceptance Date: Jan 13, 2011
• Online Publication Date: Feb 15, 2011
• Publication Date: Aug 1, 2011
• Deposit Date: Aug 25, 2023
• Journal: Robotics and Computer-Integrated Manufacturing
• Print ISSN: 0736-5845
• Electronic ISSN: 1879-2537
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 27
• Issue: 4
• Pages: 802-807
• DOI: https://doi.org/10.1016/j.rcim.2011.01.001
• Keywords: Contouring control, Three-dimensional machining, Machine tools
• Public URL: https://nottingham-repository.worktribe.com/output/24584277
• Publisher URL: https://www.sciencedirect.com/science/article/pii/S0736584511000159?via%3Dihub