În acest capitol au fost introduse o serie de variate actuatoare și s-a încercat să evidențieze avantajele utilizării unei anumite clase de actuatoare pentru o anumită aplicație. Mai mult, a fost raportată o scurtă discuție asupra limitărilor fiecărei tehnologii de acționare, pentru a permite cititorului să vizualizeze spectrul posibilelor aplicații și performanțe. Rezultă oricum clar că acționarea electromecanică reprezintă încă cea mai răspândită soluție pentru industrie și robotică. Motivația principală se află în cunoașterea convingătoare a legilor electromagnetismului și a teoriei controlului, care se bazează în principal pe ipoteze teoretice având în vedere un actuator electromecanic în buclă. În plus, este de menționat că raportul putere-greutate al unui motor DC este adesea potrivit pentru majoritatea aplicațiilor din etajele de automatizare și control și că electronica reprezintă în prezent stadiul de ultimă oră. Dar, acest studiu a încercat să ofere cititorului și alte descrieri ale unor clase neconvenționale de actuatoare: dacă, pe de o parte, utilizarea aliajelor cu memorie de formă și a arhitecturii polimerice reprezintă încă o nișă, principiul de acționare bazat pe material piezoelectric este în prezent cea mai bună soluție pentru micromanipulare și acționare. În plus, introducerea tehnologiei de acționare conformă își propune să ilustreze o nouă tendință în robotică care apare treptat și conduce robotica în sine către utilizarea structurii flexibile pentru a crește dexteritatea manipulării și a imita eficiența în interacțiunea sistemelor biologice.

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