Classification of Fault Diagnosis Diagnosis Diagnosis

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					Classification of Fault Diagnosis Diagnosis Diagnosis

  Fault Diagnosis Diagnosis
  can be different ways to classify the fault diagnosis technology:
  (1) according to diagnostic purposes, requirements and conditions of the various
fault diagnosis techniques can be divided into:
  ① functional diagnosis and run diagnostics. Functional diagnosis refers to a new
installation or just repair equipment and parts and functions of operating conditions to
detect and judge, and judge according to the results of testing and adjusting them. The
diagnosis is running is running on the device or system condition monitoring, in order
to abnormal occurrence and development of early diagnosis.
  ② diagnosis and continuous monitoring on a regular basis. Diagnosis is the periodic
interval in a certain time on the service equipment or system to conduct a routine
examination and diagnosis. And continuous monitoring is the use of instrumentation
and computer signal processing system equipment or systems running continuously
monitoring and testing.
  ③ diagnosis of direct and indirect diagnosis. Direct diagnosis is based directly on
key parts of the state information to determine the state in which a diagnosis. Direct
rapid and reliable diagnosis, but are often subjected to mechanical structure and
working conditions of the restrictions can not be achieved. Indirect diagnosis is
running through the device of secondary diagnostic information to indirectly
determine changes in key parts of the state. Often in the indirect diagnosis of the false
alarm or missed the case.
  ④ online diagnosis and offline diagnostics. Online Diagnosis is running on the field
of automatic devices in real-time diagnosis. The diagnosis was off the tape recorder to
the scene by measuring the state of the signal recorded back to the laboratory
diagnosis of the object and then combined with the history file for further analysis and
diagnosis, or through the network diagnosis.
  ⑤ conventional diagnosis and specific diagnosis. Conventional diagnosis is defined
as equipment under normal service conditions for diagnosis. Signals were collected in
less than a routine diagnostic, we must consider the use of special diagnostic.
  ⑥ simple diagnosis and precise diagnosis. Simple diagnosis of field operations
personnel with generally hear, touch, see, smell or use of a portable diagnostic
instrument is a simple manual monitoring equipment to determine whether equipment
failure. Precise diagnosis of the precise diagnosis expert with advanced sensors,
precision diagnostic equipment and advanced analytical tools to implement the
diagnosis. Through testing, analysis, determine the fault type, extent, location and
cause of the failure cause, failure to understand the development trend.
  (2) the physical parameters by diagnostic classification on the diagnosis, diagnostic
techniques can be divided into vibration diagnostics, acoustic diagnostic techniques,
the temperature diagnostics, pollution diagnostics, non-destructive diagnostic
techniques, pressure diagnosis, intensity of diagnostic technology, electrical
parameters diagnostic techniques, diagnostic techniques towards integrated diagnostic
 (3) the direct object according to diagnostic classification of the diagnosis,
diagnostic techniques can be divided into mechanical parts diagnostic techniques,
hydraulic system diagnostics, diagnostics of rotating machinery, reciprocating
machinery diagnostic technology, engineering structure, diagnostic techniques,
processes flow diagnostics, production system diagnostics, electrical equipment,
diagnostic technology. / Center>