Abstract. In this paper, new idea is proposed that roll eccentricity disturbance on gauge may cause chaos under certain system parameters during rolling through establishing the eccentric model. A new non-singular terminal sliding mode controller is proposed to control the chaotic system. The new controller based on exponential reaching law improves the convergence rate and reduce the reaching time. As expected from the theoretical analysis, the designed controller actualizes stability control in the chaotic system with high convergence rate. Simulation results show the effectiveness of the method.