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CNC (computer numerical control)-interpolated parallel pipeline computing method

A calculation method and flowing water technology, applied in calculation, instrumentation, electrical digital data processing, etc., can solve problems such as limited calculation speed and restrictions on high-speed and high-precision CNC machining

Inactive Publication Date: 2014-11-12
FOSHAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, no matter which method is used, it is calculated point by point according to the order. The calculation speed of such calculation can only depend on the calculation speed of the computer itself. Obviously, due to the limitation of technical conditions and cost, the calculation speed of the computer is Limited, which restricts the improvement of high-speed and high-precision CNC machining

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  • CNC (computer numerical control)-interpolated parallel pipeline computing method
  • CNC (computer numerical control)-interpolated parallel pipeline computing method
  • CNC (computer numerical control)-interpolated parallel pipeline computing method

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Embodiment Construction

[0262] Now in conjunction with accompanying drawing and embodiment the present invention is described in further detail:

[0263] Such as figure 1 , 2 shown, including unit-based CU3 calculation process CU3B Parallel / pipeline computing process,

[0264] unit CU3 The calculation process is:

[0265] Putting the Bernstein polynomial 7: β (f) = β 0 (1-f)3 +3 β 1 f(1-f) 2 +3 β 2 f 2 (1-f)+ β 3 f 3 , the data group in 0≤f≤1β 0 , β 1 , β 2 , β 3 〉As the first input data set, the operation is performed in the following way, with β 0 Input and output respectively β 0 l as well as CU3's first adder a10, will β 1 feed separately CU3's first The adder a10 and the second adder a11 will β 2 feed separately CU3 Second Adder a11, the third adder a12, will β 3 Input and output respectively β 0 r as well as CU3 third adder a12; CU3's first Adder a10 receives β 0 , β 1 After performing the addition operation, the result is β 0 + β ...

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Abstract

The invention provides a CNC (computer numerical control)-interpolated parallel pipeline computing method which is characterized by comprising a unit CU3 computing process-based CU3B parallel / pipeline computing process. The unit CU3 computing process comprises the following steps of: taking a data set (beta 0, beta 1, beta 2 and beta 3) in a bernstein polynomial 7 as an input data set I to compute two output data sets II (beta 01, beta 11, beta 21 and beta 31) and (beta 0r, beta 1r, beta 2r and beta 3r) as well as a midpoint value beta (0.5) by the unit CU3 computing process; and based on the two data sets (beta 01, beta 11, beta 21 and beta 31) and (beta 0r, beta 1r, beta 2r and beta 3r) obtained in the former-layer unit CU3 computing process, respectively taking the two data sets (beta 01, beta 11, beta 21 and beta 31) and (beta 0r, beta 1r, beta 2r and beta 3r) as an input data set I to be computed by a corresponding later-layer unit CU3 computing process to respectively obtain two corresponding output data sets II and a midpoint value so as to obtain the 2n-1 midpoint values with the variable quantity error of 1 / 2n after the n-layer computation. Compared with the prior art, the method is fast in computation speed, high in result precision, suitable for the chip-grade parallel pipeline reconfigurable computation, and capable of meeting the continuously-developed industrial requirement.

Description

technical field [0001] The invention relates to a calculation method of CNC running data. Background technique [0002] CNC machining is one of the basic processes of contemporary mechanical manufacturing. CNC machining requires the help of CNC machine tools. The CNC system is one of the core components of the CNC machine tool. At present, CNC numerical control is the only form of modern numerical control system. High-speed and high-precision CNC system is the fundamental guarantee for improving processing efficiency and quality. The new reconfigurable technology represented by field programmable gate array FPGA not only changes the traditional CNC interpolation calculation process but also changes its calculation mode. However, no matter which method is used, it is calculated point by point according to the order. The calculation speed of such calculation can only depend on the calculation speed of the computer itself. Obviously, due to the limitation of technical condi...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F7/57
Inventor 王兴波
Owner FOSHAN UNIVERSITY