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Airborne Antenna Stability Tracking System is applied in complex dynamic environment, in order to weaken the influence of the change of inertia during the the movement of the antenna carrier to the system control performance, the control strategy is to design an online identifier for moment of inertia link and feedforward the value to the speed regulator to achieve self-tuning .The Model reference adaptive identification algorithm is adopted to design the inertia identifier when the system runs smoothly, the three order optimal design method is used to feedforward the value to the speed regulator to achieve self-tuning.The identifier for moment of inertia and feedforward model in Simulink is designed,the simulation result showed the identification accuracy under different adaption gain and verified the rapidity and correctness of system’s speed response under self-tuning speed control.