Ingineria de refabricare a demonstrat un impact pozitiv asupra durabilității energetice, protecției mediului și dezvoltării economice globale. Teoria și tehnologia refabricării s-au dezvoltat rapid, iar piața produselor refabricate continuă să crească la nivel mondial. Durata de viață utilă rămasă (RUL) a utilajelor aflate în funcțiune este un factor determinant direct al refabricării acestora. Alegerea timpului de retragere pentru refabricare nu este derivată numai din RUL, ci și dintr-o echilibrare cuprinzătoare a tuturor efectelor privind tehnologia, economia și impactul asupra mediului. Această abordare holistică optimizează procesul de refabricare.

Refabricarea este un proces complex de sistem. Teoria refabricării oferă suport pentru următoarele etape ale procesului: (1) determinarea „refabricării” unei piese vechi; (2) echilibrare și judecată cuprinzătoare pentru proiectarea planificării procesului de refabricare (RPP); (3) și evaluarea calității și fiabilității sau a duratei de viață a piesei refabricate. O evaluare exactă și eficientă a RUL va avea ca rezultat o evaluare rezonabilă și corectă a refabricării.

Modelarea RUL poate fi clasificată ca bazată pe model fizic și bazată pe model antrenat pe date. Principalele metode de prognoză RUL sunt support vector machine (SVM) și modelul state-space (SSM), așa cum a fost ilustrat în studiile de caz. Acuratețea evaluării RUL în modelul bazat pe date este afectată nu numai de modelul în sine, ci și de factori multipli, cum ar fi achiziția de date, procesarea semnalului și erorile de măsurare. În căutarea unui model mai exact pentru evaluarea RUL, se recomandă un proiect robust de sistem de achiziție de date pentru a reduce eficiența zgomotului în modelarea RUL.

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