Method of calculating recovery commands for numerical...

Details Method of calculating recovery commands for numerical... Method of calculating recovery commands for numerical...

2009-02-19

2011-11-15

Masinick, Michael D (Department: 2122)

Data processing: generic control systems or specific application

Specific application, apparatus or process

Product assembly or manufacturing

C700S188000, C700S302000

Reexamination Certificate

active

08060238

ABSTRACT:
A method of calculating recovery commands for numerical controlled system that an upper controller provides position commands to a servo driver to drive a motor. A memory space is provided to store the position commands, and then a position matrix and a transformation matrix are read. Finally, the transformation matrix is multiplied by the position matrix to calculate the coefficients of a position polynomial and a plurality of position interpolations. In addition, a velocity polynomial and an acceleration polynomial can be calculated. Therefore, the position commands are calculated to recovery as a high-order differentiable continuous polynomial to synchronize the servo driver and the upper controller.

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“Motion Controller Design for Contour-Folowing Tasks Based on Real-Time Contour Error Estimation”, Cheng et al, IEEE vol. 54, No. 3, Jun. 2007.

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