Feedback linearization control method for hydraulic flight simulation turntable based on variable inertia model compensation

The turntable plays an important role in semi-physical simulation of missiles and other aircraft. The precision of its control directly influences aircraft performance. However, the inertial coupling among the three-axis frames of the turntable limits the enhancement of tracking accuracy. This paper establishes a three-axis turntable model, hydraulic model, friction torque model, and gravity torque model, and then obtains expressions for inertial coupling and torque coupling. Based on this, a feedback linearization controller for hydraulic flight simulation turntable is designed with variable inertia model compensation. Finally, through comparative experiments, effectiveness and practicality of proposed control method are verified. Specifically, the proposed control method reduced the average tracking error of the turntable by 18.35% compared to traditional control methods, demonstrating its promising application prospects.