Multivariable Control of a Magnetic Levitation System with a Y Shape Iron Plate

APPLICATION OF H∞ CONTROL AND CLOSED LOOP IDENTIFICATION TO A MAGNETIC LEVITATION SYSTEM

“…In our previous study [4][5], we obtained an observer- based ILQ controller, which focuses on the tracking property of the servo system and aims to asymptotically achieve its desired transfer function in a decoupled form. The resulting closed loop system, which is shown in Fig.…”

“…A desired objective of control is to make the step size of y 1 at least more than 6 mm under levitation of the levitated vehicle at y 2 = y 3 = 0 rad. Based on experimental results [4][5] and trial-and-error, the best values of the design parameters are selected as:…”

“…In view of the academic background of control applications, a special issue on magnetic bearing control [3] has been published. We have been researching a multivariable control of a magnetic levitation system with a Y shape iron plate as a basic study of such mechanisms [4][5][6][7][8][9]. This system has three major obstacles to its stabilization such as input-output coupling, nonlinearities of electromagnetic forces, and destabilization of the closed loop system due to spillovers.…”

Control of a MIMO Magnetic Levitation System using Exponential Control Barrier Function

“…This system is nonlinear, open loop unstable and Single-Input/Single-Output (SISO) ( Barie and Chiasson (1996)). The magnetic levitation system scheme analyzed in this work is based on the experimental apparatus described in Fujii et al (1994) and Tsujino et al (1999). The system is constituted by a Y shape metal plate that must be levitated by electromagnetic attractive forces.…”