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Fast, stable and simple maximum inscribed circle diameter assessment method

A technique of measuring the largest inscribed circle and measuring the circle, which is applied in the direction of measuring devices, instruments, etc., and can solve problems such as initial value sensitivity

Inactive Publication Date: 2018-09-21
唐哲敏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method is very sensitive to the initial value and cannot always complete the task of evaluating the diameter of the largest inscribed circle stably
[0008] In summary, there is still a lack of a stable, fast, and simple method for evaluating the diameter of the largest inscribed circle

Method used

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  • Fast, stable and simple maximum inscribed circle diameter assessment method
  • Fast, stable and simple maximum inscribed circle diameter assessment method
  • Fast, stable and simple maximum inscribed circle diameter assessment method

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Embodiment Construction

[0044] The following are specific embodiments of the present invention, and the solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.

[0045] assessment_point_set { p i} the largest inscribed circle diameter.

[0046] Step 1: get point set { p i}as follows:

[0047]

[0048] build state element set { t i}as follows:

[0049]

[0050] build feature row vector set { A i}as follows:

[0051]

[0052] build-boundary-element-set { b i}as follows:

[0053] { b i}=[1,1,1,1,1,1,1,1,1,1] T .

[0054] After step 1, proceed to step 2.

[0055] Step 2: Take t i minimum value t min =9.9831 corresponding measuring point p 6 as the key point, and its measurement point number 6 is added to the key point set{ l}, such that { l}={6}. After step 2, proceed to step 3.

[0056] Step 3: According to the key point set { l} build analysis matrix A and analyz...

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Abstract

The invention belongs to the field of precision measurement and computer application, and particularly relates to a stable, fast and simple-form maximum inscribed circle diameter assessment method comprising the following steps that step 1: a measuring point set is acquired, and a feature row vector set, a boundary element set and a state element set are established according to the measuring point set; step 2: the measuring point corresponding to the minimum value of the state element set is taken as the key point and the measuring point number is added to the key point set; step 3: an analysis matrix and analysis column vectors are established according to the key point set; step 4: rank analysis is performed on the analysis matrix and an augmented analysis matrix so as to determine whether to continue optimization, eliminate the key point or terminate the program and obtain the optimal value; step 5: the analysis matrix and the analysis column vectors are solved so as to obtain theoptimization direction; step 6: a new key point is solved by the pursuit problem, the measuring point state set is updated and the process enters the next cycle; and step 7: the program is terminatedand the optimal value is obtained.

Description

technical field [0001] The invention belongs to the field of precision measurement and computer application, and relates to a stable, rapid and simple method for evaluating the diameter of the largest inscribed circle, which can be used for evaluating the diameter of the largest inscribed circle of parts with a rotary body structure, and for its Provide guidance for the improvement of processing technology. Background technique [0002] Dimensional error and shape error (abbreviation of shape error and position error) directly affect product quality, assembly and service life. It is of great significance to quickly and accurately calculate part error. The definition and identification method of the maximum inscribed circle diameter are given in the national standard and ISO standard, but the method of calculating the maximum inscribed circle diameter value from the measurement data is not given. At present, the evaluation method of the diameter of the largest inscribed circ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B21/10
CPCG01B21/10
Inventor 唐哲敏黄美发
Owner 唐哲敏
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