Journal of the Japan Society of Applied Electromagnetics and Mechanics
Online ISSN : 2187-9257
Print ISSN : 0919-4452
ISSN-L : 0919-4452
Academic Papers
Study on Sensorless Drive of a Helical Teethed Linear Actuator
Masahiko SAKAIKatsuhiro HIRATAYoshihiro NAKATA
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2018 Volume 26 Issue 1 Pages 28-33

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Abstract

 This paper describes the rotation angle sensorless drive of a helical teethed linear actuator (HTLA) for artificial muscle. The position control with vector controller is required the linear and rotary position of the mover of the HTLA. However, to simultaneously measurement the linear and rotary signals is required complicated structure. The proposed estimation method utilizes the magnetic saliency of the mover and linear encoder signal. In this study, the estimation accuracy of the rotation angle was calculated by 3D-FEM analysis and measured by prototype. In addition, we investigated the response characteristics under PID position control using the estimated rotation angle. As the result, the maximum estimation error is 7.5 deg. in the initial stable position of the prototype. Moreover, experimental result show that position control can be performed using the proposed estimation method.

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© 2018 The Japan Society of Applied Electromagnetics and Mechanics
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