Engineering and Test Systems

Built-in test (BIT) provides fault finding as a means to aid in system assembly, test, and maintenance. An investigation to evaluate BIT of a particular electronics board used in the in-flight entertainment system for Boeing 777s is described. We found BIT proved useful when failure occurrences were uniquely associate…

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• FİKRET ÇALIŞKAN

A test sequence is given for the test access port (TAP) controller portion of the boundary-scan architecture proposed by the Joint Test Action Group (JTAG) and IEEE Working Group P1149.1 as an industry-standard design-for-testability technique. The resulting test sequence, generated by using a technique based on Rural…

Various terms such as ‘cannot duplicate (CND)’, ‘re-test OK (RTOK)’, ‘no fault indicated (NFI)’, ‘no fault found (NFF)’, and ‘no trouble found (NTF)’, are used to describe the inability to replicate field failures during laboratory assessment. This paper uses CND to refer to all such failures. CND failures can make up…

The problem of generating the sequence of tests required to reach a diagnostic conclusion with minimum average cost, which is also known as a test-sequencing problem, is considered. The traditional test-sequencing problem is generalized here to include asymmetrical tests. In general, the next test to execute depends o…

• TONGUÇ ÜNLÜYURT

The problem of generating the sequence of tests required to reach a diagnostic conclusion with minimum average cost, which is also known as a test-sequencing problem, is considered. The traditional test-sequencing problem is generalized here to include asymmetrical tests. In general, the next test to execute depends o…

• ÖMER ERHUN KUNDAKCIOĞLU

In this paper, an active fault-tolerant flight control system against sensor/actuator failures for unmanned aerial vehicles (UAVs) is proposed. First, an approach to detecting and isolating UAV sensor failures affecting the mean of the Kalman filter (KF) innovation sequence is proposed. Second, an adaptive two-stage l…

• CENGİZ HACIZADE

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• TONGUÇ ÜNLÜYURT

The hub location problem (HLP) is one of the strategic planning problems encountered in different contexts such as supply chain management, passenger and cargo transportation industries, and telecommunications.In this paper, we consider a reliable uncapacitated multiple allocation hub location problem under hub disrup…

Abstract In this paper an approach to fault-tolerant flight control system design based on the integration of sensor/actuator fault detection and isolation (FDI) and reconfigurable control is presented. The effects of the sensor and actuator faults in the innovation process of the Kalman filter are investigated, and a…

• FİKRET ÇALIŞKAN

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• İSMAİL KUBAN ALTINEL

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• İSMAİL KUBAN ALTINEL