Development and Analysis of a High Thrust Force Direct-Drive Linear Actuator

This paper presents the design and analysis of a novel high thrust force linear actuator with high backdrivability. This motor consists of a mover and a stator with spiral (helical) structure. The mover moves spirally in the stator, and the linear motion is extracted to drive the load. This motor is...

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Bibliographic Details
Published in:IEEE transactions on industrial electronics (1982) 2009-05, Vol.56 (5), p.1383-1392
Main Authors: Fujimoto, Y., Kominami, T., Hamada, H.
Format: Article
Language:English
Subjects:
Actuators
Axial flux machines
Design engineering
electrical machines
Finite element methods
finite-element analysis (FEA)
finite-element method (FEM)
Gears
helical-motion motors
High thrust
Hydraulic actuators
Iron
linear actuators
Magnetic flux
Mathematical analysis
Mathematical models
Motors
Permanent magnet motors
permanent-magnet (PM) machines
Permeability
spiral motors
Spirals
Stators
thrust force
Torque
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Summary:This paper presents the design and analysis of a novel high thrust force linear actuator with high backdrivability. This motor consists of a mover and a stator with spiral (helical) structure. The mover moves spirally in the stator, and the linear motion is extracted to drive the load. This motor is a direct-drive system and highly backdrivable. In this paper, a basic model and thrust-force/torque equations are proposed, and finite-element method analysis and experimental results of a prototype are presented. From experiments, the designed spiral motor achieves 2000-N rated thrust force. The thrust-force capabilities of the spiral motor are compared with other linear motors. It is confirmed that the spiral motor is almost close to the latest state of the art in linear motor technology.
ISSN:0278-0046
1557-9948
DOI:10.1109/TIE.2009.2012419