Unmanned Levitating Object (ULO)

• Main Authors: Agravante, David Nelson J., Avisado, Hal Franco P., Lee, Patrick S., Matute, Carlos M.
• Format: text
• Language: English
• Published: Animo Repository 2006
• Subjects: Airplanes; Aeronautics; Aircraft industry; Computer Sciences
• Online Access: https://animorepository.dlsu.edu.ph/etd_bachelors/14185
• Institution: De La Salle University

Studies are being conducted on different approaches on how UAVs fly themselves. Aircraft stability is also a major concern since there is no human controlling the vehicle. This thesis is aimed at designing and building prototype capable of semi-autonomous vertical take-off and landing. The Unmanned Levitating Object is a four-rotor aircraft that can take off, hover and land semi-autonomously. It relies on the title data provided by the accelerometer board to determine its status and uses a modified PID control algorithm to maintain stability. The control algorithm implemented in the microcontroller changes motor speed to adjust the pitch and roll of the craft. However, due to rotational torque effects, the quadrotor cannot maintain absolute stability because of its moving central axis of rotation. The compensation done by the aircraft is satifactory since during flight, the maximum deviation of the pitch and roll values are relatively minimal, which are (-10.1, -11.28) as minimum and 7.53, 3.21) as its maximum values. The average deviation of the aircraft from 0 degrees pitch and roll is (1.96, -1.32)."