25 Sep, 2021

Vibration isolation of a electromagnetic actuator with passive gravity compensation

Research Area: TU/e Year: 2010
Type of Publication: In Proceedings
Authors: Ding, C; Damen, AAH; van den Bosch, PPJ; Janssen, JLG
Book title: Proceedings of the 2nd International Conference on Computer and Automation Engineering (ICCAE)
Pages: 85-89
Address: Singapore
Organization: IEEE Month: 26-28 February
A control strategy of combining H control and feedback linearization was applied to the model of a highly nonlinear, three Degrees-Of-Freedom (DOF) electromagnetic actuator, which was recently designed for non-contact suspension of a large payload. The new electromagnetic actuator has the advantage of passive gravity compensation based on permanent magnets with low stiffness and high force density. But the nonlinearity is so high that the stability status along each DOF changes while the translator is traveling within the working range. Feedback linearization method was used to compensate the nonlinearity, a stabilizing controller was employed to eliminate the slow-varying calculation error of the passive force, and an H controller was designed for vibration isolation. Simulation results show that the proposed control strategy has robust vibration isolation performance within a working range in which the relation between the magnetic force and the relative position is highly nonlinear.


Dr. J.L.G. (Jeroen) Janssen MSc

emailButton info@jlgjanssen.nl
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