Fault diagnosis of quality control in production process
1 Scope
This document specifies the equipment fault diagnosis process, diagnosis elements and diagnosis methods of digital workshop in discrete manufacturing field.
This document is applicable to guide the discrete manufacturing field of digital locomotives for production process quality control to carry out fault diagnosis.
2 Normative References
The contents of the following documents constitute an essential clause of this document through normative references in the text. Among them, only the version corresponding to the date of the reference document is applicable to this document; The undated reference document whose latest version (including all amendments) applies to this document.
GB/T 7826-2012 System Port J Reliability Analysis Technology Failure Mode and Impact Analysis (EMEA) Program
GB/T 22394.1-2015 Machine Condition Monitoring and Diagnostic Data Interpretation and Diagnostic Techniques Part 1: General
GB/T 37942-2019 Condition Monitoring of Quality Control Equipment in Production Process
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1 Anomaly
Irregularity or abnormality in a system, deviating from the standard state.
[Source: GB/T 20921 2007, 5.4]
3.2 Descriptor
Data items derived from original or processed parameters or external observations.
[Source: GB/T 20921-2007, 7.2]
3.3 Failure
Equipment loses the ability to perform a specified function.
Note: Failure is an event different from failure, and failure is a state.
[Source: GB/T 20921-2007, 2.7]
3.4 Failure mode
Observable failure effect.
[Source: GB/T 20921-2007, 5.6]
3.5 Fault
The state in which a part or assembly of a machine is placed when it deteriorates or an abnormal state occurs that may cause the machine to fail.
Note 1: Failure may be the result of failure, but failure may also exist without failure
Note 2: Planned activities or lack of external resources are not failures.
[Source: GB/T 20921 2007, 2.8]
3.6 Confidence level
Quality criteria indicating the accuracy of diagnosis.
Note 1: It is expressed as a percentage.
Note 2: It represents the cumulative effect of error sources on the final reliability or confidence level of the accuracy of the output results, which can be determined by calculation or weighted evaluation system.
[Source: GB/T 23713.1-2009, 3.2]
3.7 Diagnostics
Symptoms and syndromes examined to determine the nature (type, condition, degree) of failure or failure.
[Source: GB/T 20921-2007, 2.6]
4 Abbreviations
The following abbreviations apply to this document.
FTA: Fault Tree Analysis
FMEA: Failure Mode and Effects Analysis
FMECA: Fault Mode, Effects and Criticality Analysis
FMSA; Failure Mode Symptoms Analysis
5 Fault diagnosis process
Fault diagnosis mainly includes five parts: fault detection, fault pattern recognition, fault location, fault evaluation and fault decision. The fault diagnosis process is shown in Figure 1.
1 Scope 2 Normative References 3 Terms and Definitions 4 Abbreviations 5 Fault diagnosis process 6 Fault diagnosis elements 7 Fault diagnosis method
Fault diagnosis of quality control in production process
1 Scope
This document specifies the equipment fault diagnosis process, diagnosis elements and diagnosis methods of digital workshop in discrete manufacturing field.
This document is applicable to guide the discrete manufacturing field of digital locomotives for production process quality control to carry out fault diagnosis.
2 Normative References
The contents of the following documents constitute an essential clause of this document through normative references in the text. Among them, only the version corresponding to the date of the reference document is applicable to this document; The undated reference document whose latest version (including all amendments) applies to this document.
GB/T 7826-2012 System Port J Reliability Analysis Technology Failure Mode and Impact Analysis (EMEA) Program
GB/T 22394.1-2015 Machine Condition Monitoring and Diagnostic Data Interpretation and Diagnostic Techniques Part 1: General
GB/T 37942-2019 Condition Monitoring of Quality Control Equipment in Production Process
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1 Anomaly
Irregularity or abnormality in a system, deviating from the standard state.
[Source: GB/T 20921 2007, 5.4]
3.2 Descriptor
Data items derived from original or processed parameters or external observations.
[Source: GB/T 20921-2007, 7.2]
3.3 Failure
Equipment loses the ability to perform a specified function.
Note: Failure is an event different from failure, and failure is a state.
[Source: GB/T 20921-2007, 2.7]
3.4 Failure mode
Observable failure effect.
[Source: GB/T 20921-2007, 5.6]
3.5 Fault
The state in which a part or assembly of a machine is placed when it deteriorates or an abnormal state occurs that may cause the machine to fail.
Note 1: Failure may be the result of failure, but failure may also exist without failure
Note 2: Planned activities or lack of external resources are not failures.
[Source: GB/T 20921 2007, 2.8]
3.6 Confidence level
Quality criteria indicating the accuracy of diagnosis.
Note 1: It is expressed as a percentage.
Note 2: It represents the cumulative effect of error sources on the final reliability or confidence level of the accuracy of the output results, which can be determined by calculation or weighted evaluation system.
[Source: GB/T 23713.1-2009, 3.2]
3.7 Diagnostics
Symptoms and syndromes examined to determine the nature (type, condition, degree) of failure or failure.
[Source: GB/T 20921-2007, 2.6]
4 Abbreviations
The following abbreviations apply to this document.
FTA: Fault Tree Analysis
FMEA: Failure Mode and Effects Analysis
FMECA: Fault Mode, Effects and Criticality Analysis
FMSA; Failure Mode Symptoms Analysis
5 Fault diagnosis process
Fault diagnosis mainly includes five parts: fault detection, fault pattern recognition, fault location, fault evaluation and fault decision. The fault diagnosis process is shown in Figure 1.
Contents of GB/T 41397-2022
1 Scope
2 Normative References
3 Terms and Definitions
4 Abbreviations
5 Fault diagnosis process
6 Fault diagnosis elements
7 Fault diagnosis method
