ELECTROMECHANICAL ACTUATOR SELECTION FOR SPECIALIZED TURNTABLE APPLICATION

DOI: 10.31673/2412-4338.2024.032032

Abstract

The article deals with the development of a mathematical model and control algorithms for a specialized rotary platform designed to stabilize and guide an optical system on board an unmanned aerial vehicle (UAV). The problem statement involves determining the number of degrees of freedom required to implement the specified maneuvers, calculating the maximum rotation angles of the platform, ensuring the required control resolution, and ensuring sufficient system performance to compensate for external disturbances and track moving targets.
The purpose of the study is to determine a rational variant of the implementation of the system for capturing and tracking a target with an optical camera. The article presents the results of determining the critical parameters of the rotating system, including the number of degrees of freedom, minimum rotation angle (pitch), rotation speed, and acceleration of the system, taking into account the weight of the payload.
The study is based on the parameters of the selected camera, which weighs 70 g, has a focal length of 16 mm and a resolution of 1280 by 800 pixels. The viewing angle is calculated from a vertical angle, with a maximum viewing angle of 12.8 degrees. To improve image stability, the resolution of the rotary system was chosen to be 4 times higher, which provides a value of 3.2 degrees.
In addition, the article describes the importance of compensating for changes in aircraft orientation, which is achieved by changing the position of the optical system through a rotary stabilization platform. Thus, the results of the study open up new opportunities to improve the efficiency of surveillance systems used in unmanned technologies.

Keywords: unmanned aerial vehicle, stabilization, tracking, optical system, rotary platform, BLDC motor, stepper motor.

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