Test method for judging quality of fitted curve

A technology of fitting curves and testing methods, which is applied in the field of fitting curves, can solve problems such as fitting curves deviating from real curves, and achieve the effect of simple form, meeting the requirements of use, and fixed solution methods

Pending Publication Date: 2020-09-15
JIHUA LAB
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a test method for judging the quality of the fitting curve, aiming to solve the problem that the existing polynomial function di

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Test method for judging quality of fitted curve
  • Test method for judging quality of fitted curve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0027] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientation indicated by rear, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc. The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a test method for judging the quality of a fitted curve. The test method includes the steps: multiplying the point data with large discrete point data difference after fine adjustment of the data by a weight, re-fitting, if the weight exceeds a threshold value, executing fitting curve descending processing, namely, subtracting one from the fitting curve frequency, and reasonably removing one discrete data point according to the reliability of the acquired data to perform descending fitting; and comparing discrete points of the curve subjected to the reduced-order fitting with the original data, and determining whether to execute B spline curve fitting processing or not according to a threshold value, i.e., if the reduced-order fitting still cannot meet the thresholdvalue requirement, fitting the original discrete data by using a B spline function. According to the test method, on the basis of polynomial function processing, the processing means of fitting curvedescending order and B spline curve fitting are combined to solve the problem of serious oscillation of the curve caused by the Runge phenomenon of the polynomial function, thus guaranteeing that thefitted curve is close to a real curve; and the test method has the advantages of simple form and fixed solving method, and meets the use requirements.

Description

technical field [0001] The invention relates to the technical field of fitting curves, in particular to a test method for judging the quality of fitting curves. Background technique [0002] In actual industrial production, it is necessary to fit the discrete data of machinery and equipment to obtain the trend curve of the data. The existing relatively mature method is to use polynomial function to fit multiple discrete data points collected by the equipment. Polynomial function has the advantages of simple form and fixed solution method. Under normal circumstances, as the number of discrete data points increases, the accuracy of curve fitting should be higher, and the fitted curve should be closer to the real curve. However, when the number of discrete data points increases, if the polynomial function is still used for fitting, the existence of the Runge phenomenon will cause serious oscillations in the curve, which will cause the fitted curve to deviate from the real curv...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): G06T11/20
CPCG06T11/203
Inventor 刘家骏田松坡矫日华薛光坛
Owner JIHUA LAB
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap