4.3 Article

A novel approach for controlling DC motor speed using NARXnet based FOPID controller

期刊

EVOLVING SYSTEMS
卷 14, 期 1, 页码 101-116

出版社

SPRINGER HEIDELBERG
DOI: 10.1007/s12530-022-09437-1

关键词

System identification; FOPID; PID controller; Harris Hawks Optimization (HHO); NARXnet; DC motor

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This paper proposes a technique for identifying system dynamics and designing Fractional Order Proportional Integral Derivative (FOPID) controllers for separately excited DC motors using neural networks. The proposed method demonstrates superior performance and stability through simulation results.
The importance of neural networks in control systems has grown in recent years as a result of their learning and universal approximation capabilities. When the plant dynamics are complex, system recognition and controller design become particularly difficult. In this paper, we propose a technique for identifying the system dynamics and neural network based Fractional Order Proportional Integral Derivative (FOPID) controller design for separately excited DC motor. A category of Recurrent Neural Networks (RNNs) called Nonlinear Auto Regressive with eXogenous input networks (NARXnets) are used to recognize the plant dynamics. To verify the proposed method, a separately excited DC motor is considered as plant and Harris Hawks Optimization (HHO) algorithm tuned FOPID controller as the model controller. The motor and controller dynamics are identified using NARXnets. The simulation results demonstrate that the proposed controller is performing superior to the conventional FOPID/PID controllers. The step and load response analysis shows stable and robust performance of neural network based FOPID controller. In addition, the proposed method can also be used as an alternative technique to approximate FOPID controllers using neural networks.

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