Contactles power supply for moving sensors and actuators in high-precision mechatronic systems with long-stroke power transfer capability in the x-y plane

J. Boeij, de, E.A. Lomonova, J.L. Duarte, A.J.A. Vandenput

Research output: Contribution to journalArticleAcademicpeer-review

36 Citations (Scopus)
4 Downloads (Pure)

Abstract

In this paper, a new topology for contactless energy transfer is proposed and tested that can transfer energy to a moving load using inductive coupling. This contactless energy transfer topology is designed to supply power to the moving parts in high-precision mechatronic systems without cable slabs. The proposed topology provides long-stroke contactless energy transfer capability in the x–y plane and a short-stroke movement of a few millimeters perpendicular to the plane. In addition, it is tolerant to rotations. The electrical steady-state, electrical transient, combined electrical and mechanical transient and forces of the contactless energy transfer system are modeled. The experimental setup consists of a platform with one secondary coil, which is attached to a linear actuator. Underneath the platform is an array of primary coils, that are each connected to a half-bridge square wave power supply. The load on the secondary side is a rectifier with a 50 O resistor. The energy transfer to the load is measured while the secondary coil is moved over the array of primary coils by the linear actuator. The secondary coil moves with a stroke of 18 cm at speeds over 1 m/s, while up to 265 W of power is transferred continuously with 90% efficiency. The proposed system is very suitable for transferring energy without cable slab to planar actuators and to conventional linear (short- and long-stroke) actuators in high-precision motion systems, such as lithography, die-bonding and component placement machines.
Original languageEnglish
Pages (from-to)319-328
Number of pages10
JournalSensors and Actuators, A: Physical
Volume148
Issue number1
DOIs
Publication statusPublished - 2008

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