A parameter interpolation method based on prediction and iterative compensation

A technology of iterative compensation and interpolation method, which is applied in the direction of complex mathematical operations, etc., can solve problems such as poor precision, uncontrollable calculation precision, and heavy calculation load, so as to improve interpolation precision, improve calculation precision and convergence speed, and reduce speed fluctuations. Effect

Active Publication Date: 2019-04-09
SHANDONG UNIV
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Problems solved by technology

The ILF function is mainly constructed by polynomials. Although the calculation load of the cubic polynomial is low, the accuracy is poor; although the seventh and ninth degree polynomials have high precision and can avoid swinging, the calculation load is relatively large.
At the same time, the calculation accuracy cannot be controlled only by the Taylor formula and the RIM method

Method used

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  • A parameter interpolation method based on prediction and iterative compensation
  • A parameter interpolation method based on prediction and iterative compensation
  • A parameter interpolation method based on prediction and iterative compensation

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[0062] It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0063] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and / or combinations thereof.

[0064] As introduced in the background technology, there are deficiencies in the prior art. In order to solve th...

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Abstract

The invention discloses a parameter interpolation method based on prediction and iterative compensation. The method solves the problem that interpolation has errors in the prior art. The parameter interpolation method has the beneficial effects that the interpolation precision can be adjusted by controlling the number of iterations, and the scheme is as follows: the parameter interpolation methodbased on prediction and iterative compensation comprises the steps of: predicting a target length by combining a second-order Taylor formula on the basis of a multi-time polynomial prediction algorithm designed by historical interpolation data to obtain a prediction length; Designing an iterative compensation algorithm based on a second-order Taylor formula and speed fluctuation to approach the target, and adjusting the interpolation precision by controlling the number of iterations; And when interpolation of the period is completed, updating historical data to prepare for next interpolation.

Description

technical field [0001] The invention relates to the field of parameter interpolation, in particular to a parameter interpolation method based on prediction and iterative compensation. Background technique [0002] Parameter interpolation plays an increasingly important role in modern manufacturing, such as in the field of computer numerical control (CNC) and robot control. Compared with traditional linear and arc interpolation, parametric interpolation has the advantages of good surface quality, high execution efficiency and less memory consumption, and is especially suitable for high-speed and high-precision occasions. [0003] In the prior art, parameter interpolation mainly includes two steps, one is according to the step size L i Calculate the target point parameter u of the i-th segment i+1 ; Second, according to the parameter u i+1 Can calculate the target point position C(u i+1 ). where, because the step size L i and parameter u i+1 There is no deterministic re...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/10G06F17/16
CPCG06F17/10G06F17/16
Inventor 张承瑞倪鹤鹏王海涛袁佶鹏王公成
Owner SHANDONG UNIV
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