Abstract Soft error is one of the factors which may affect reliability computer programs. A common method to alleviate impact soft errors redundancy computation, a classical data flow detection mechanism. However, program with computation still have some vulnerable spots, might be caused by flaw during implementation or instruction reordering given compiler optimization. Finding spots great sig...

To eliminate the influence of parameter mismatch for fundamental model based sensorless methods, an effective online position error correction method is proposed permanent magnet synchronous machines in this paper. Based on derived mechanism, i.e. varies proportionally to dq -axis currents, injects a sinusoidal current signal with small amplitude and low frequency into $d$ - or $q$ short period...

the output error of the globoidal cam mechanism can be considered as a relevant indicator ofmechanism performance, because it determines kinematic and dynamical behavior of mechanicaltransmission. based on the differential geometry and the rigid body transformations, themathematical model of surface geometry of the globoidal cam is established. then we present theanalytical expression of the ou...

Wavefront sensing technology can directly test the phase distribution of wavefront distortion and has the advantages of simple operation, real-time and large dynamic range. It is widely used in adaptive optics, laser beam quality diagnosis, laser atmospheric communication, optical element and optics system detection, quantitative phase microscope, human eye aberration measurement and other fiel...

Software fault injection has recently started showing great promise as a means for measuring the safety of software programs. This paper shows the results from applying one method for implementing software fault injection, data state error corruption, to the Departure from Nucleate Boiling Ratio (DNBR) code, a research code from the Halden Reactor Project, located in Halden Norway. THE OPINIONS...

This document describes a method and experimental results for the dependability characterization of middleware implementations, and in particular failure mode analysis of CORBA ORB implementations. The aim of the work is to provide an overall approach for identifying and quantifying failure modes using various fault injection techniques and fault models. Related work in dependability characteri...

In order to be able to tolerate the effects of faults, we must first detect the symptoms of faults, i.e. the errors. This paper evaluates the error detection properties of an error detection scheme based on the concept of executable assertions aiming to detect data errors in internal signals. The mechanisms are evaluated using error injection experiments in an embedded control system. The resul...

This paper describes the design and evaluation of two software implemented error detection and system recovery mechanisms that protect a prototype brakeby-wire controller from soft errors. We used an evaluation driven design process to develop the software mechanisms, which are specifically designed to prevent soft errors from causing critical failures in the brake controller. The design proces...

Preventing medication errors by using a barcode administration system has become prevalent in patient safety. Analyses of data captured by bar code systems provide opportunities to understand the actual situation at the point of care. Our study aims at understanding issues of medication safety as well as investigating measures taken to prevent medication accidents, by analyzing data captured by...