A Novel Method for Accuracy Improvement of Variable Reluctance Linear Resolvers

A novel technique for accuracy improvement of the variable reluctance linear resolvers (VR-L resolvers) is investigated in this article. A well-known structure and a calculation correcting factor are applied to propose a VR-L resolvers model with higher accuracy. A periodic finite-element analysis (...

Full description

Saved in:
Bibliographic Details
Published in:IEEE sensors journal 2022-10, Vol.22 (19), p.18409-18417
Main Authors: Ramezannezhad, Arman, Naderi, Peyman, Vandevelde, Lieven
Format: Article
Language:English
Subjects:
Absolute position error
Accuracy
Actuators
Air gaps
Analytical models
Coils (windings)
compensator teeth (CT)
Compensators
dc offset
Demodulation
end effect
Error reduction
Finite element analysis
Finite element method
finite-element analysis (FEA)
Integrated circuit modeling
Magnetic circuits
Mathematical analysis
Model accuracy
Numerical models
Position errors
Resolvers
Sensors
Signal resolution
Variable reluctance
variable reluctance linear resolver (VR-L resolver)
Windings
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A novel technique for accuracy improvement of the variable reluctance linear resolvers (VR-L resolvers) is investigated in this article. A well-known structure and a calculation correcting factor are applied to propose a VR-L resolvers model with higher accuracy. A periodic finite-element analysis (FEA) is employed with a shorter processing time. The modeling is also performed for conventional and proposed improved structures by the mentioned FEA, where the extra teeth suppress the end effect in the model. The main reasons for the position error in linear actuators/sensors are the windings' end effect and nonequal magnetic circuit. Two additional compensator teeth (CT)/slots with different heights are considered at both entrance and front parts of the mover, which introduces an improved structure. Furthermore, a new correction factor is employed to amend the demodulation process resulting in better performance. Compared to the conventional type, the proposed resolver is evaluated in healthy and faulty cases with asymmetric air-gap conditions. It is shown that the position error is significantly reduced in the improved structure. Finally, the effectiveness of the proposed design is proved by experimental results.
ISSN:1530-437X
1558-1748
DOI:10.1109/JSEN.2022.3199807