中国物理B ›› 2016, Vol. 25 ›› Issue (5): 50201-050201.doi: 10.1088/1674-1056/25/5/050201
Controlling chaos based on a novel intelligent integral terminal sliding mode control in a rod-type plasma torch
Safa Khari, Zahra Rahmani, Behrooz Rezaie
- Intelligent Systems Research Group, Faculty of Electrical and Computer Engineering, Babol Noshrivani University of Technology, Shariati Av., Babol, Iran
Controlling chaos based on a novel intelligent integral terminal sliding mode control in a rod-type plasma torch
Safa Khari, Zahra Rahmani, Behrooz Rezaie
- Intelligent Systems Research Group, Faculty of Electrical and Computer Engineering, Babol Noshrivani University of Technology, Shariati Av., Babol, Iran
摘要：
An integral terminal sliding mode controller is proposed in order to control chaos in a rod-type plasma torch system. In this method, a new sliding surface is defined based on a combination of the conventional sliding surface in terminal sliding mode control and a nonlinear function of the integral of the system states. It is assumed that the dynamics of a chaotic system are unknown and also the system is exposed to disturbance and unstructured uncertainty. To achieve a chattering-free and high-speed response for such an unknown system, an adaptive neuro-fuzzy inference system is utilized in the next step to approximate the unknown part of the nonlinear dynamics. Then, the proposed integral terminal sliding mode controller stabilizes the approximated system based on Lyapunov's stability theory. In addition, a Bee algorithm is used to select the coefficients of integral terminal sliding mode controller to improve the performance of the proposed method. Simulation results demonstrate the improvement in the response speed, chattering rejection, transient response, and robustness against uncertainties.
中图分类号: (Control theory)
- 02.30.Yy