412 Performance Evaluation of the Developed Compact Magnetic Levitation System for Engineering Education : Comparison with Results of State Feedback Control

2009 ◽  
Vol 2009.58 (0) ◽  
pp. 247-248
Author(s):  
Ryo Tsushima ◽  
Yuuichiroh MITANI
Keyword(s):  
Performance Evaluation ◽  
Feedback Control ◽  
Engineering Education ◽  
State Feedback ◽  
Magnetic Levitation ◽  
State Feedback Control ◽  
Levitation System ◽  
Magnetic Levitation System

Application of non-linear control to a magnetic levitation system

2017 ◽  
Vol 11 (22) ◽  
pp. 1055-1063
Author(s):  
Rafael Antonio Acosta Rodriguez ◽  
Octavio Jose Salcedo Parra ◽  
Giovanny Mauricio Tarazona Bermudez
Keyword(s):  
Nonlinear Model ◽  
State Feedback ◽  
Magnetic Levitation ◽  
State Feedback Control ◽  
Linear Control ◽  
Control Law ◽  
State Variables ◽  
Levitation System ◽  
Perturbation Vector ◽  
Magnetic Levitation System

This paper evaluates the nonlinear control applied to a magnetic levitating plant, it is explained in detail the nonlinear model of the plant, the state variables, perturbation vector. A state feedback control was triggered by applying a state observer. Finally it was modeled under the control law found in the presence of disturbances.

Design, manufacture and performance evaluation of HTS electromagnets for the hybrid magnetic levitation system

2011 ◽  
Vol 471 (21-22) ◽  
pp. 1501-1505 ◽  
Author(s):  
S.Y. Chu ◽  
Y.J. Hwang ◽  
S. Choi ◽  
J.B. Na ◽  
Y.J. Kim ◽  
...  
Keyword(s):  
Performance Evaluation ◽  
Magnetic Levitation ◽  
Levitation System ◽  
Magnetic Levitation System ◽  
And Performance

scholarly journals Robust Sliding Mode Control of a Magnetic Levitation System: Continuous-Time and Discrete-Time Approaches

2021 ◽  
Author(s):  
Pratik Vernekar ◽  
Vitthal Bandal
Keyword(s):  
Discrete Time ◽  
Feedback Linearization ◽  
State Feedback ◽  
Magnetic Levitation ◽  
Sliding Mode ◽  
Lyapunov Stability Theory ◽  
Mismatched Uncertainties ◽  
Levitation System ◽  
Full State Feedback ◽  
Magnetic Levitation System

This paper presents three types of sliding mode controllers for a magnetic levitation system. First, a proportional-integral sliding mode controller (PI-SMC) is designed using a new switching surface and a proportional plus power rate reaching law. The PI-SMC is more robust than a feedback linearization controller in the presence of mismatched uncertainties and outperforms the SMC schemes reported recently in the literature in terms of the convergence rate and settling time. Next, to reduce the chattering phenomenon in the PI-SMC, a state feedback-based discrete-time SMC algorithm is developed. However, the disturbance rejection ability is compromised to some extent. Furthermore, to improve the robustness without compromising the chattering reduction benefits of the discrete-time SMC, mismatched uncertainties like sensor noise and track input disturbance are incorporated in a robust discrete-time SMC design using multirate output feedback (MROF). With this technique, it is possible to realize the effect of a full-state feedback controller without incurring the complexity of a dynamic controller or an additional discrete-time observer. Also, the MROF-based discrete-time SMC strategy can stabilize the magnetic levitation system with excellent dynamic and steady-state performance with superior robustness in the presence of mismatched uncertainties. The stability of the closed-loop system under the proposed controllers is proved by using the Lyapunov stability theory. The simulation results and analytical comparisons demonstrate the effectiveness and robustness of the proposed control schemes.

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