Two Robust Control Methods for an Electromagnetically Levitated Vehicle

Publish Year: 1393
نوع سند: مقاله ژورنالی
زبان: English
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شناسه ملی سند علمی:

JR_IJMEC-4-13_010

تاریخ نمایه سازی: 16 فروردین 1395

Abstract:

In this work, an electromagnetically levitated vehicle prototype is controlled. The vehicle levitation is achieved through the control of the gaps of the electromagnets. The system is open loop, unstable and highly nonlinear with a very restrict equilibrium region. In this paper, two robust controllers are designed and compared. A sliding mode control is applied for increasing robustness, modeling uncertainties and reducing disturbance responses, while LQG/LTR controller is one which allows the designer to shape the principal gains of the return ratio at either the input or the output of the plant, to attain robust stability and performance specifications. The simulation results show that the closed-loop system provides robust stability, while having good tracking and disturbance rejection and noise attenuation.

Authors

Tahereh Taleshian

Electrical Engineering Dept. Babol University of Technology, Babol, Iran

Farzaneh Akhgari

Electrical Engineering Dept. Babol University of Technology, Babol, Iran

Abolfazl Ranjbar Noei

Electrical Engineering Dept. Babol University of Technology, Babol, Iran