calculating higher derivatives and make the calculations simpler, this paper proposes ... Segments of the curve having small radius of curvature are the sources ... The geometrical properties of a cutter path, including position, tangent, curvature a
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In an ideal scenario of intelligent machine tools [18] the human mechanist was almost replaced by the controller. During the last decade many efforts have.
39, 355â371, 2012 ... Received 26 January 2012, Accepted 18 March 2012, Scheduled 30 March ..... anechoic rooms,â 16th IMEKO TC4 Symposium, 2008. 15.
Oct 10, 2013 - Articles in BioMedical Engineering OnLine are listed in PubMed and ... development, especially when suspected spinal malformations occur while ultrasound fails to .... of NEDI which adopted a modified training window structure to .....
for Head-Related Transfer Function pole-zero models. Lin Wangأ, Fuliang Yiny and Zhe Chenz. School of Electronic and Information Engineering, Dalian ...
Feb 28, 2011 - Functions. Keywords: Artificial neural networks, Interpolation, Modeling, Ohio, Radon, Zip code. 1. ... ered information for more than 130,000 homes/schools ...... Kumar A, Harrell J, Heydinger A. Ohio goes online to combat.
David Amsallem âand Charbel Farhat â . Stanford University, Stanford ... Tangent space to a Grassmann manifold at the point S. ¯u. = Non-dimensional vector of ...
C. Poussot-Vassal. Abstractâ In this paper, the problem of medium-scale MIMO. LTI systems approximation is addressed. The proposed method- ology, inspired ...
b School of Mechanical Engineering, Shandong University, Ji'nan, Shandong, China ... the problems are related to the uniform layer-based fabrication approach ...
Keywordsï¼Motion controller, System management software, NC code compiler, .... represent curve ( such as a straight line, conic curve ) and free curve ( such as the ... curve interpolation currently, taking into account the future's application of
management non real time tasks[2], such as man-machine interface, network and other functions. GT400- ... The system software uses a single document,.
Aug 17, 2016 - Chebyshev point as interpolation nodes, use barycentric interpolation collocation method establish the dierential matrix of function to solve ...
In sparse-angle X-ray tomography reconstruction, where only a small number of projection images are ... Interpolation; Sparse Imaging; Tomography; Sinogram.
We obtain numerical solutions which have achie- ved better accuracy. 2. Coiflets and Wavelet Interpolation. In the context of wavelet theory, we usually deal with.
Apr 24, 2011 - The authors would like to thank David Varodayan and David Chen of ... David V, Aditya M, Markus F, Bern G. Distributed Coding of Random ...
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Abstract: The Material Point Method (MPM) discrete solution procedure for computational solid mechanics is generalized using a variational form and a Petrovâ.
An interpolation algorithm usually consists of two phases: velocity planning and parame- ter computation. ... needed and used a constant feedarte in other places [23]. However, the ... Furthermore, all these methods are not proved to be time-optimal.
Identification Using Wireless Sensor Networks. CONSTANTIN ... Key-Words: - spatial distributed system, system identification, sensor networks, interpolation.
double ended round collar machine screws with hex recess for Allen wrench. ... workplace as it can provide real life example of fixtures for mounting workpieces ...
The proposed model is based on plane wave spectrum theory using a novel and ... admittance of an air filled circular waveguide covered with dielectric slab.
determined by the host, so a real-time adjustment of ma- chining parameters ...... 47:621â638. 13. Tsai MS, Nien HW, Yau HT (2011) Development of integrated.
Int J Adv Manuf Technol DOI 10.1007/s00170-013-5044-4
ORIGINAL ARTICLE
An interpolation method for the open CNC system based on EPM Yu-an Jin & Yong He & Jian-zhong Fu & Zi-Chen Chen
Received: 14 January 2013 / Accepted: 29 April 2013 # Springer-Verlag London 2013
Abstract A typical open computer numerical control (CNC) system should own the capability of being redeveloped easily and effectively, and any improvements of interpolation algorithm or machining technique could be put into practice by users conveniently. However, this is not always available in the current open CNC systems. To solve this problem, an interpolation method based on external profile mode (EPM) is introduced to improve the universality and the performance of an open CNC system in this paper. The method is realized with a rough interpolation in the PC host and a fine interpolation in the slave motion controller. With this method, various interpolation algorithms can be easily realized in the rough interpolation when machining complex contours. Meanwhile, the machining parameters during each interpolation cycle can be wholly determined by the host, so a real-time adjustment of machining parameters can be accomplished during the interpolation. The working principal of EPM is presented in this paper, and the realization of interpolation algorithms with the proposed method is described. A look-ahead algorithm for determining the machining parameters of each segment is implemented based on the length of segments in the rough interpolation. An acceleration/deceleration strategy with confined jounce is proposed in the look-ahead algorithm. The experimental results of specific profile interpolation show that the interpolation method based on EPM can make the open CNC system more universality and high performance. Keywords CNC . External profile mode . Line segments . Look-ahead algorithm
