CONTROL SYSTEM OF REACTION WHEEL ACTUATOR IN PICOSATTELITE ATTITUDE DETERMINATION CONTROL SYSTEM SIMULATOR DEVELOPMENT

• Main Author: WIDYARACHMANTO (NIM : 13214032), BASKORO
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/26032
• Institution: Institut Teknologi Bandung

<p align="justify"> <br /> <br /> Picosatellite is a satellite with a mass of 1 upto 10 kilograms. CubeSAT is a type of satellite for space research that typically has a volume of 1 cm^3 and a mass less than 1.33 kilograms with functions as a space research tool, amateur radio relay station, remote sensing, and atmospheric parameter measurement. This final project covers the design, implementation, and testing of picosatellite simulator subsystem which consist of controller circuits, BLDC motor as actuator, and reaction wheels. <br /> <br /> Attitude Determination Control System (ADCS) is an attitude control system on satellites with actuator motors mounted on all three axes (X, Y, Z). The controller section serves to control the attitudes of the picosatellite simulator according to the desired user value. This section consists of a switching circuit including DPDT relays, switching transistors, and ESC (Electronic Speed Controller). The actuator part consists of BLDC motors and reaction wheels. Reaction wheels is a major actuator component of an attitude control system that works using Newton's law for rotational motion based on changes in angular momentum. <br /> <br /> The simulator of attitude control system on picosatellite designed in this final project has been able to perform the attitude control process as desired. The automatic control process can restore the attitude of picosatellite in the event of position disturbance. The manual control process can change the attitude of the picosatellite position according to the input by the user. From the open-loop and closed-loop system response, we get an improvement in the settling time and overshoot response, while the steady state error response of the closed loop system shows a larger error value than the open-loop system. <br /> <p align="justify"> <br />