In this study, the first simulation study of a laboratory product, in which attitude control of the nanosatellite will be made with 4 reaction wheels and inertia sensor placed on the nanosatellite prototype, different controllers will be designed by the user and tested in the simulation environment, and the simulation results will be verified with the experiments on the real system. Within the scope of the simulation study, the dynamic and kinematic equations of the system, the motor’s mathematical model, and the mixer system that gives the necessary voltage to the motors are modeled. The nonlinear satellite ground test system was controlled in 3-axes utilizing the PID controller according to the criteria selected in the time domain, and the attitude control of the nonlinear system was achieved. Link: https://www.researchgate.net/publication/354385104_Modelling_and_Control_of_Ground_Test_Set-up_of_Attitude_of_Satellite_Uydu_Yonelimi_Yer_Test_Duzeneginin_Modellemesi_ve_Kontrolu