A cascade controller based on neural network compensation is designed for the feed system oftruck-mounted drilling rig. Firstly, the global fast terminal sliding mode surface is used to eliminate chattering and improve the convergence speed in the position control outer loop, and a disturbance observer based on radial basis neural network is designed to estimate and compensate the integrated disturbance of the system. Then, backstepping control is used to calculate the actual input voltage of the whole system in the inner loop of pressure control and the stability of the closed-loop system is proved by Lyapunov theory. Finally, the effectiveness of the designed controller is further verified by simulation and experiment.
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