Development of a Sensorless Magnetic Levitation Control System.

State Observers for Sensorless Control of Magnetic Levitation Systems

In this paper we address the problem of state observation for sensorless control of nonlinear magnetic levitation systems, that is, the regulation of the position of a levitated object measuring only the voltage and current of the electrical supply. Instrumental for the development of the theory is the use of parameter estimation-based observers, which combined with the dynamic regressor extens...

Output feedback control of a mechanical system using magnetic levitation.

This paper presents an application of a nonlinear magnetic levitation system to the problem of efficient active control of mass-spring-damper mechanical systems. An output feedback control scheme is proposed for reference position trajectory tracking tasks on the flexible mechanical system. The electromagnetically actuated system is shown to be a differentially flat nonlinear system. An extende...

Nonlinear Control of a Planar Magnetic Levitation System

In this paper, we derive the model of a three-magnet positioning device and design a nonlinear control that stabilizes it. The motivation of this work is to develop tools that may have practical significance to, e.g., photolithography and to create a challenging nonlinear control problem which can be used to test novel nonlinear control approaches. The nonlinear controller designed here transfo...

Adaptive Inverse Optimal Control of a Magnetic Levitation System

Sliding Mode Control of a Magnetic Levitation System

Sliding mode control schemes of the static and dynamic types are proposed for the control of a magnetic levitation system. The proposed controllers guarantee the asymptotic regulation of the states of the system to their desired values. Simulation results of the proposed controllers are given to illustrate the effectiveness of them. Robustness of the control schemes to changes in the parameters...