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  5. Design of the time calculation algorithm for the technical state forecasting of radio-electronics digital devices’ when using physical diagnosis methods

Design of the time calculation algorithm for the technical state forecasting of radio-electronics digital devices’ when using physical diagnosis methods

S. Glukhov
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Description: In today's complicated military-political and economic conditions of Ukraine, the provision of ever-increasing requirements for the reliability of both existing and prospective samples of radio-electronic equipment is complicated. Today, for the diagnosis of objects of electronic equipment, methods of functional diagnostics are widely used, which involve the determination of the technical condition on the basis of comparison of the received reactions with the reference ones. The reliability requirements of radio-electronics designed on the element base of different generations are constantly increasing. This is due to the growing number of progressive failures of digital devices of radio-electronics blocks which haves been in operation for decades. The reason for the reliability performance degradation of the objects concerned is degradation processes occurring in semiconductor crystals. Meeting the specified requirements becomes complicated, as the existing Maintenance and Repair System uses functional diagnosis methods and the conclusion on the devices’ technical state is made based on the comparison of the obtained reactions with the reference ones. Following the diagnosis using the mentioned methods, the digital device with technical state being defined as serviceable may be out of service in unpredictable time resulting in reliability performance degradation and making forecasting virtually impossible. In previous works it has been noted that the arisen contradiction can be resolved given the establishment of a new Technical Diagnosis Automated System based on physical diagnosis methods allowing to determine the real technical state of digital devices with a high probability. This article deals with the design of algorithm that would allow to define the forecasting interval in case diagnostic parameter falls outside the range of set values when using physical diagnosis methods and extreme reliability tests results of radio-electronic components being elements of radio-electronic blocks’ digital devices. Using this algorithm should allow to forecast technical state of digital devices and determine their residual life in a new Technical Diagnosis Automated System.


Keywords: radio-electronics, digital devices, radio-electronic components, technical state, physical diagnosis methods, forecasting

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Reference:
 Hlukhov, S.I. (2019), “Pobudova alhorytmu rozrakhunku chasu prohnozuvannia tekhnichnoho stanu tsyfrovykh prystroiv radioelektronnoi tekhniky pry vykorystanni metodiv fizychnoho diahnostuvannia” [Design of the time calculation algorithm for the technical state forecasting of radio-electronics digital devices’ when using physical diagnosis methods], Systems of Arms and Military Equipment, No. 1(57), pp. 69-76. https://doi.org/10.30748/soivt.2019.57.10.