Akademik Məlumat İdarəetmə Sistemi
Dissertasiyanın növü: Postgraduate
Dissertasiyanın aid olduğu qurum: Gazi University, Turkey
Dissertasiyanın təsdiq tarixi: 2017
Dissertasiyanın dili: Turkish
Tələbə: Melih Sarp
MəsləhətçiNECMİ ALTIN
Qısa məlumat:By preventing the angular vibrations of the platform from being carried on to the axes of the attached imaging or laser systems, line of sight stabilization allows both a stable image to be obtained and a stable marker to be created. In this study, a two axis gimbal system that can be used in vessels and can be subjected to low frequency disturbances was designed. Instead of using direct drive DC torque motors which are usually used as an actuator in these kinds of systems, a brushless DC motor with an output connected to a harmonic drive gear was considered. Because a harmonic drive gear system is enough to provide the required stabilization precision, there is no need for large and heavy direct drive DC motors which are necessary under high frequency disturbances. In this paper, first an agular velocity and torque relationship was derived based on the angular motions of the foundation that the motion platform was connected to. Subsequently, the cross coupling effect caused by the torque disturbances that motion in the elevation and azmuth axes create on each other were calculated. Finally, a stabilization loop was designed for each axis using the vector control method and the brushless DC motor's mathematical model. The MATLAB/Simulink model of the resultant system was obtained and performance of designed system was tested through simulation studies. Simulation results show that a stabilized platform which has a harmonic drive gear can be successful in providing line of sight stabilization for vessels.