access icon openaccess Study on uncertainty reasoning of running reliability testing face to CNC machine

It is necessary to test the reliability of the operation of the machine itself for meeting the high-speed, ultra-precision, flexible, and other modern manufacturing and processing needs. In practical applications, the obtained reliability detection information presents a variety of uncertainties such as randomness, imprecision, incompleteness and so on, due to the complexity of the machining environment, the limitations of the sensor itself and the imperfections of the information acquisition technology. The uncertainty reasoning method is proposed to test reliability and accuracy precision. Based on the multi-sensor information characteristic, the rule of the credibility sets is established to achieve the operational reliability analysis. It can realise the uncertainty reasoning for the modal and reliability rules. Examples of analysis show that during the high-end CNC machine tools operational reliability analysis, it has a practical effect to study the uncertainty reasoning method of the modal and reliability propositional rule and the analysis basis can be provided for the precision degradation and fault diagnosis.

Inspec keywords: production engineering computing; reliability; manufacturing systems; computerised numerical control; machine tools; fault diagnosis; inference mechanisms; sensor fusion

Other keywords: processing needs; technological basis; uncertainty reasoning method; analysis basis; machining environment; multisensor information characteristic; ultra-precision; machine tooling; modern manufacturing systems; accuracy precision; computer numerical control machine tools; information acquisition technology; high-end CNC machine tools operational reliability analysis; reliability detection information; equipping

Subjects: Reliability; Production engineering computing; Industrial applications of IT; Combinatorial mathematics; Production equipment; Maintenance and reliability; Control technology and theory (production); Manufacturing systems; Machining

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