Robust Control of Electromagnetic Levitation System

Nonlinear Hcontrol is a promising way of attenuating negative effects of external disturbances in nonlinearsystemsandisrobustagainstuncertaintiesoftheplant. However, partial differential equation (PDE) obtained from this method rarely can be solved analytically. Thus, some sort of approximation is required. Furthermore, produced controllers by this method using Taylor series approximation(especiallyhigherordercontrollers)arecomplicatedand hard to implement. In this paper, a robust and nonlinear controller is introduced which combines linear Hcontroller and feedback linearization technique. First, a nonlinear state transformation is applied to the nonlinear system such that the resulting system is linear. Next, a linear Hcontroller is designedforthefeedbacklinearizedsystem.Bythismethod, approximation is not required in designing Hcontroller because for linear systems, resulting PDE is simplified to a Riccati equation. Proposed approach has been applied to a MagneticLevitation(Maglev)system,anditsperformanceis compared with third-order nonlinear Hcontroller to verify the effectiveness and robustness of new method. Simulation results show that proposed controller attenuates external disturbancemuchbetterthannonlinear H,andsimultaneously has less control effort.
 

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Robust Control of Electromagnetic Levitation System

  • تولید کننده: مارکت کد
  • شناسنامه: MC4-1027
  • موجودی: در انبار
  • تاریخ چاپ: 2016-10-30
  • سریال برنامه: MC4-1027
  • لینک دانلود
  • نویسنده: Ali Javadi
  • ژورنال: Control Automation & Electr ical Systems
  • رایگان

برچسب ها: MC410272