This work aims to redesign an embedded control system for an autonomous quadrotor. This embedded control system is developed based on a DsPic microcontroller. A wireless communication between the ground station and the system is insured via an Xbee device and an inertial measurement unit is used for attitude measurement. The integral backstepping approach is designed and its algorithm is implemented in real time on the realized embedded control system for the attitude stabilization of the quadrotor system. The results obtained show good performance stabilization, demonstrates superior angles tracking response as well as rejection to the load disturbance. Ill. 12, bibl. 13 (in English; abstracts in English and Lithuanian). M. Bouchoucha, S. Seghour, H. Osmani, M. Bouri. Integralinio grįžtamojo ryšio gerinimas padėčiai sekti kvadrorotorinėse sistemose // Elektronika ir elektrotechnika. -Kaunas: Technologija, 2011. -Nr. 10(116). -P. 75-80.Atliktas įterptinės valdymo sistemos, skirtos autonominiams kvadrorotoriams, tobulinimas. Sistema suprojektuota naudojant mikrovaldiklį DsPic. Bevielis ryšys tarp antžeminės stebėjimo stoties ir sistemos užtikrinamas naudojant modulį Xbee. Suprojektuota valdymo sistema buvo įdiegta realioje kvadrorotorinėje sistemoje. Ji užtikrina gerą stabilizaciją, puikų valdymo sistemos kampų išlaikymą pasikeitus apkrovai. Il. 12, bibl. 13 (anglų kalba; santraukos anglų ir lietuvių k.).
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