Implementation of PID controller and construction of hardware in loop for satellite attitude control subsystem

Currently, one of the most important fields of scientific activity is building and sending satellites into space, which is one of the key needs of all countries. Satellites have great importance in the fields of telecommunications, research, weather, imaging and mapping, and military applications. Controllers are designed by considering some assumptions and simplifying the system that it can impose high costs of implementing the designed controllers on the real system without evaluating the designed controller on the simulator. Despite the discrepancy between the simulated system and the actual system model, testbed control simulator will help to achieve these goals. Determining this subsystem is responsible for the successful completion of the satellite mission. Any defect in this subsystem can cause the failure of the satellite mission. Therefore, testing and ensuring the correct operation of this subsystem before launching the satellite is so important. In this project, first, the hardware simulator is designed and built based on the 3 degree of freedom model. In the construction of this simulator, air bearings have been used to simulate the vacuum environment in space. To control the testbed model, the PID controller is implemented and the results are shown controller.