Szerző szerinti böngészés "Radu, Tarca"
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Tétel Szabadon hozzáférhető Aspects Regarding Fly Control of Quadcopter(DUPress, 2016-09-14) Endrowednes, Kuantama; Ioan, Tarca; Radu, Tarca; Dan, CraciunQuadcopter is one of Unmanned Aerial Vehicle (UAV) which has two pairs of identical fixed pitched rotor propellers. It can fly autonomously based on pre-programmed flight or manually controlled by a remote, and every movement achieved by varying the speed of each rotor independently. The orientation of quadcopter axes relative to a reference line and its direction of motion are known as attitude. Fly control factors are affected by attitude determination which can be calculated from 3 possible angles using combined measurement. Gyroscope and accelerometer are primary sensors to control quadcopter attitude, but magnetometer sensor and GPS also used to enhance the stability during flight. This paper will focus on details of function and mathematical formula of every factor regarding fly control and comparative data of 2 types of orientation sensor used in this system.Tétel Szabadon hozzáférhető Hard iron distortion compensation for 3 axis magnetometer(Debreceni Egyetem) Mihai, Cornea George; Arnold, Nilgesz; Flaviu, Birouas Ionut; Radu, TarcaTétel Szabadon hozzáférhető Hard iron distortion compensation for 3 axis magnetometer(DUPress, 2016-09-14) Cornea, George Mihai; Nilgesz, Arnold; Ionut Flaviu, Birouas; Radu, TarcaThis paper presents the way how the hard iron effect could be compensated and a way to implement it on a small power device such as a microcontroller. Because of the magnetized materials that can stay near a magnetometer sensor and because of the very small magnetic field of the Earth, before the use of the measured values from a magnetometer to determine the heading (angle with the N direction) of the sensor a compensation is needed.