R & D Journal of the South African Institution of Mechanical Engineering 2013, 29, 36-43 http://www.saimeche.org.za (open access) © SAIMechE All rights reserved. 36 Uncertainty and false alarms exist in the operational environment of autonomous marine robots. This paper presents the investigations on obstacle detection and avoidance model of an autonomous marine vehicle using ultrasonic sensors...

Linear System Identification yields a nominal model parameter, which minimizes a specific criterion based on the single input-output data set. Here we investigate the utility of various methods for estimating the probability distribution of this nominal parameter using only the data from this single experiment. The results are compared to the actual parameter distribution generated by many Mont...

Radio Frequency Identification (RFID) is set to revolutionise industrial control as it holds the potential to simplify and make more robust the tracking of parts or part carriers through manufacture, storage, distribution and ultimately the supply chain. RFID control is based on unique RFID transponder tags being attached to parts and used to identify the part as it moves through the factory or...

In this paper we examine the problem of automatic semantic identification of entities in multimedia documents from a computing point of view. Specifically, we identify as main points to consider the storage of the required knowledge and the computational complexity of the handling of the knowledge as well as of the actual identification process. In order to tackle the above we utilize (i) a spa...

In this paper an integrated robust identification and control design procedure is proposed. The plant to be controlled is supposed to be linear, time invariant, stable, possibly infinite dimensional and a set of noisecorrupted input–output measurements is supposed to be available. The emphasis is placed on the design of controllers guaranteeing robust stability and robust performances, and on t...

Design hydrographs described by peak discharge, hydrograph volume, and hydrograph shapeare essential for engineering tasks involving storage. Such design hydrographs are inherently uncertain asare classical flood estimates focusing on peak discharge only. Various sources of uncertainty contribute tothe total uncertainty of synthetic design hydrographs for gauged and ungauged catchments. These c...

The relationship between the amplitude of P300, the mean amplitude of the Slow Wave, and uncertainty reduction after (dis)confirmation of hypotheses was studied in a Concept-Identification task. The subjects had to categorize stimuli according to a conceptual mIe (joint denial or exclusion) and to rate the confidence that their classification was correct. Three types of feedback were distinguis...

The performance of a model-based diagnosis system could be affected by several uncertainty sources, such as, model errors, uncertainty in measurements, and disturbances. This uncertainty can be handled by mean of interval models. The aim of this thesis is to propose a methodology for fault detection, isolation and identification based on interval models. Especially a modal interval based techni...

Results of the codes simulating transients and abnormal conditions in nuclear power plants are inevitably uncertain. In application to thermal-hydraulic calculations by thermal-hydraulics codes, uncertainty importance analysis can be used to quantitatively confirm the results of qualitative phenomena identification and ranking table (PIRT). Several methodologies have been developed to address u...

In this paper, we present a review of the experimental identification of dynamic parameters of bearings in a rotating machine. Major emphasis is given to vibration-based identification methods and the review encompasses descriptions of experimental measurement techniques, mathematical modeling, parameter extraction algorithms and uncertainty in the estimates applied to a variety of bearings. Th...