Two Robust Control Methods for an Electromagnetically Levitated Vehicle
سال انتشار: 1393
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 506
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شناسه ملی سند علمی:
JR_IJMEC-4-13_010
تاریخ نمایه سازی: 16 فروردین 1395
چکیده مقاله:
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.
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نویسندگان
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