Open Access Open Access  Restricted Access Subscription or Fee Access

Design observers of a vehicle system : A graphical approach

Abderrahim Frih, Zakaria Chalh, Mostafa Mrabti

Abstract



An observer can reconstruct or estimate in real time the current state of a real system using available measures, without prior knowledge of the initial conditions, to have complete and specific information on system status. In addition, it allows to estimate the unmeasurable states of a system, also replace expensive or difficult to maintain sensors. For example the slip sensor....
For this ain, we will conceive observers proportional and proportional integral full-order on a linear mechatronic system using a graphical approach to model it and that will be easy to handle thereafter, the causal properties and structural analysis of the bond graph tool are implemented for the synthesis of the observer. As a result, the calculation of the gains of the Luenberger observer and proportional integral observer are based on graphical procedures. equally to give a comparison between the measured values and estimate to justify the importance and interest of the proposed approach. Simulation tests on a mechanical system in the automobile field shows the performance of the observer Luenberger and the proportional integral linears graph developed in order to measure and estimate the state unmeasurable.

Keywords


bond graph, Luenberger observer, proportional integral observer, automobile mechanical system, performance, estimate.

Full Text:

PDF


Disclaimer/Regarding indexing issue:

We have provided the online access of all issues and papers to the indexing agencies (as given on journal web site). It’s depend on indexing agencies when, how and what manner they can index or not. Hence, we like to inform that on the basis of earlier indexing, we can’t predict the today or future indexing policy of third party (i.e. indexing agencies) as they have right to discontinue any journal at any time without prior information to the journal. So, please neither sends any question nor expects any answer from us on the behalf of third party i.e. indexing agencies.Hence, we will not issue any certificate or letter for indexing issue. Our role is just to provide the online access to them. So we do properly this and one can visit indexing agencies website to get the authentic information. Also: DOI is paid service which provided by a third party. We never mentioned that we go for this for our any journal. However, journal have no objection if author go directly for this paid DOI service.