Cascade plus Feedforward Control Strategy for Enhanced Regulation in Maglev System

Q3 Engineering IFAC-PapersOnLine Pub Date : 2024-01-01 DOI:10.1016/j.ifacol.2024.05.061

Arunima Sagar , Rahul Radhakrishnan , G. Lloyds Raja

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Abstract

The magnetic levitation (Maglev) is a highly nonlinear and unstable system. Hence, it requires advanced and effective control mechanism. In this work, a cascaded and feedforward control strategy is designed for Maglev. Internal model control (IMC)-based proportional-integral (PI) and proportional-integral-derivative (PID) controllers are designed for the inner and outer loops. The feedforward controller is designed as a proportional controller which is decided based on the desired equilibrium point. Guidelines for selecting the adjustable IMC parameters for inner and outer loops are provided. Experimentally obtained closed-loop responses of the Maglev setup are compared using three different control strategies: proposed cascaded with feedforward, feedback with feedforward and pure feedback. It is vindicated that the proposed cascaded with feedforward strategy outperforms the other two strategies in terms of quantitative error metric, integral square error (ISE) and tracking the desired setpoint (ball position).

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加强磁悬浮系统调节的级联加前馈控制策略

磁悬浮（Maglev）是一个高度非线性和不稳定的系统。因此，它需要先进而有效的控制机制。本研究为磁悬浮设计了一种级联前馈控制策略。为内环和外环设计了基于内部模型控制（IMC）的比例积分（PI）和比例积分派生（PID）控制器。前馈控制器设计为比例控制器，根据所需的平衡点来决定。提供了选择内环和外环可调 IMC 参数的指南。使用三种不同的控制策略对实验获得的磁悬浮装置闭环响应进行了比较：前馈级联、前馈反馈和纯反馈。结果表明，在定量误差指标、积分平方误差（ISE）和跟踪所需的设定点（球的位置）方面，建议的级联前馈策略优于其他两种策略。

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来源期刊

IFAC-PapersOnLine Engineering-Control and Systems Engineering

CiteScore

1.70

自引率

0.00%

发文量

1122

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