GBZ26958.20-2011 English PDF

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GBZ26958.20-2011: Geometrical Product Specifications (GPS) -- Filtration -- Part 20: Linear profile filters: Basic concepts
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/Z 26958.20-2011	274	Add to Cart	3 days	Geometrical Product Specifications (GPS) -- Filtration -- Part 20: Linear profile filters: Basic concepts	Valid

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GB/T 26641   GB/T 28784.2   GB/T 28619   GB/T 26958.20   GB/T 26958.29   GB/T 26958.28   

Basic data

Standard ID: GB/Z 26958.20-2011 (GB/Z26958.20-2011)
Description (Translated English): Geometrical Product Specifications (GPS) -- Filtration -- Part 20: Linear profile filters: Basic concepts
Sector / Industry: National Standard
Classification of Chinese Standard: J04
Classification of International Standard: 17.040.20
Word Count Estimation: 14,168
Date of Issue: 2011-09-29
Date of Implementation: 2012-03-01
Quoted Standard: GB/T 18777-2009; GB/Z 26958.1-2011; JJF 1001
Adopted Standard: ISO/TS 16610-20-2006, IDT
Regulation (derived from): ?National Standard Announcement 2011 No.14
Issuing agency(ies): Ministry of Health of the People's Republic of China
Summary: This standard specifies the basic concepts of linear contour filter.

GBZ26958.20-2011: Geometrical Product Specifications (GPS) -- Filtration -- Part 20: Linear profile filters: Basic concepts

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Geometrical Product Specifications (GPS) .Filtration.Part 20. Linear profile filters. Basic concepts ICS 17.040.20 J04 People's Republic of China national standardization of technical guidance documents Product Geometrical Specifications (GPS) Filtering Part 20. Basic concepts of linear contour filters GeometricalProductSpecifications (GPS) -Filtration- Part 20.Linearprofilefilters.Basicconcepts (ISO /T S16610-20.2006, IDT) Posted on.2011-09-29 2012-03-01 Implementation General Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China China National Standardization Administration released

Foreword

GB /Z 26958 "Geometrical Product Specifications (GPS) filtering" national standardization of technical guidance document is divided into 89, has been transformed For the national standardization of technical documents have the following 9 parts. --- Part 1. Overview and basic concepts; --- Part 20. Basic concepts of linear contour filters; --- Part 22. Linear contour filter spline filter; --- Part 29. Linear contour filter spline wavelet; --- Part 31. Robust contour filter Gaussian regression filter; --- Part 32. Robust contour filter spline filter; --- Part 40. Morphological contour filter basic concepts; --- Part 41. Morphology contour filter disk and horizontal line segment filter; --- Part 49. Morphology contour filter scale space technology. This section GB /Z 26958 part 20. This section drafted in accordance with GB/T 1.1-2009 given rules. This section uses the translation method identical with the International Technical Specification ISO /T S16610-20.2006 "Product Geometrical Specifications (GPS) filter Wave Part 20. Basic Concepts of Linear Contour Filters. " For ease of use, this section made the following editorial changes. --- "This part of International Technical Specifications" be replaced by "This part of the guidance of technical documents"; --- Removed the foreword and foreword of international technical specification; --- In technical content and preparation of the format in line with the international technical specifications. This part of the National Product Geometrical Specifications Standardization Technical Committee (SAC/TC240) and focal point. This part of the drafting unit.Huazhong University of Science and Technology, China Productivity Promotion Center, Harbin Measuring Tool & Cutting Tool Group Co., Ltd. The main drafters of this section. Liu Xiaojun, Ming Cuixin, Wang Xinling, Lang Yanmei, Chen Jingyu, Li Haibin. Product Geometrical Specifications (GPS) Filtering Part 20. Basic concepts of linear contour filters

1 Scope

GB /Z 26958 provisions of this part of the basic concepts of linear contour filter.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version applies to this article Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 18777-2009 Geometrical product specifications (GPS) Surface texture contour method Phase correction filter metrology Sex (ISO 11562.1996, IDT) Geometrical product specifications (GPS) filtering Part 1. Overview and basic concepts (ISO / TS16610-1.2006, IDT) JJF1001 General Terms and Definitions for Measurement [International Metrology Terminology (VIM), BIPM, IEC , IFCC, ISO , IUPAC, IUPAP, OIML]

3 Terms and definitions

JJF1001, GB/T 18777-2009, GB /Z 26958.1-2011 and the following terms and definitions apply to this document. 3.1 Linear profile filter linearprofilefilter Contour is divided into long-wave and short-wave components of the contour filter. 3.2 Phase correction (linear) profile filter phasecorrect (linear) profilefilter A contour filter that does not produce a phase shift that leads to an asymmetrical contour deformation is not generated. Note. Phase correction filters are a special type of linear phase filter because any linear phase filter can be converted to (simply by panning Weight function) zero phase shift filter, phase correction filter. 3.3 Weighting function The function used to calculate the centerline, which shows the weight of the neighboring contour points of a point. Note. The transfer characteristic of the midline is the Fourier transform of the weight function. 3.4 Transmission characteristics of filter transmissioncharacteristicofafilter Denotes the filter's attenuation of the amplitude of the sinusoidal profile signal, expressed as a function of attenuation versus profile wavelength. Note The transfer characteristic is the Fourier transform of the weight function. 3.5 Cut-off wavelength After passing through the contour filter, the amplitude is attenuated by 50% of the wavelength of the sinusoidal profile. Note 1. Linear contour filters are distinguished by the filter type and cut-off wavelength value. Note 2. Cutoff wavelength is the recommended nesting index for linear contour filters. ......

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