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A fault diagnose expert system base on VXI is designed to proceed automatically a certain type high-tech information electronic equipment fault detection and improve its efficiency and accuracy of diagnosis. This paper mainly introduces the research on algorithm and realization of the fault diagnose expert system of the charger I of such equipment, and example proving on the hardware platform is described...
PCB fault detection and positioning is always a complex and difficult work. This thesis designed a fault diagnosis system for PCB circuit, which uses voltage signals as incentive signals and the voltage or current response signals as the output. Fault tree is established and fault searching and positioning method introduced fault dictionary analysis according to the fault tree. Through simulation...
New methodologies for eliminating No Trouble Found (NTF), No Fault Found (NFF) and other non repeatable failures in depot (or other) repair settings. Trying to find NTFs or NFFs has been as elusive as catching a leprechaun (and with the price of gold these days, who wouldn't want to catch a leprechaun and capture his pot of gold!). In fact, in some instances getting to the root cause has become the...
In this paper a test method based on the measurement of the magnitude of the supply current spectrum is presented. The method is evaluated as a preprocessing test step for fast detection of faulty circuits. This method, along with a functional test method are utilized by a versatile system, which is used for production line test of emergency luminaire circuits. Main advantages of the method are the...
This paper presents principles and results of dynamic testing of an SRAM-based FPGA using time- resolved fault injection with a pulsed laser. The synchronization setup and experimental procedure are detailed. Fault injection results obtained with a DES crypto-core application implemented on a Xilinx Virtex II are discussed.
The implementation of complex functionality in low-power nano-CMOS technologies leads to enhance susceptibility to parametric disturbances (environmental, and operation-dependent). The purpose of this paper is to present recent improvements on a methodology to exploit power-supply voltage and temperature variations in order to produce fault-tolerant structural solutions. First, the proposed methodology...
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