Analytical Modeling of Variable-Reluctance Tubular Resolver Based on Magnetic Equivalent Circuit and Conformal Mapping

Keyvannia, Ali; Zare, Fateme; Tootoonchian, F.

doi:10.1109/tim.2021.3119141

Cited by 12 publications

(5 citation statements)

References 22 publications

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“…Therefore, the basis functions should be determined as: L basis r (ϑ r ); 0 ≤ ϑ r ≤τ L basis s,i (ϑ r ); 0 ≤ ϑ r < τ (26) where i is the teeth number, i.e., i = 1, 2, ..., z s , L basis r is the basis function for the self-inductance of excitation winding, and L basis s,i are the basis functions for mutual-inductances. For the entire rotor position, the self-inductance can be calculated the same as (11) or (20). However, the calculation of mutual inductances slightly different.…”

Section: Appendixmentioning

confidence: 99%

“…The subdomain method [16], the MEC model [17]- [20], and the WF method [21] are also used to model resolvers. The subdomain model is used in [16] for modeling linear wound field resolver.…”

Section: Introductionmentioning

confidence: 99%

“…As a result, this method cannot be used to model Variable Reluctance (VR) resolvers due to the special shape of the rotor. The MEC model can also be used to predict the performance of different types of resolvers, such as axial flux type [20]. The simulation time of the MEC model is acceptable, but due to the limited number of permeance elements in the model, the accuracy is not high enough, especially in VR types.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

On the Field-Reconstruction Method for Electromagnetic Modeling of Resolvers

Saneie

Nasiri‐Gheidari

Belahcen

2023

IEEE Trans. Instrum. Meas.

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In this paper, Field-Reconstruction Method (FRM) is proposed for predicting the performance of different types of rotational resolvers, including Wound-Rotor (WR) and Variable Reluctance (VR) ones. The main features of the developed method are comparable accuracy with that of the Finite Element Method (FEM) as well as much less computational burden. The deviation of the developed model in the prediction of position error of WR and VR resolvers is less than 3%. While its simulation time is between 30 and 150 times faster than FEM, depending on the resolver type. Accordingly, the proposed model can be used for the design and optimization of different resolvers. Experimental tests on the prototype WR resolver verify the success of the analysis in the modeling of the resolvers.

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Section: Appendixmentioning

confidence: 99%

“…The subdomain method [16], the MEC model [17]- [20], and the WF method [21] are also used to model resolvers. The subdomain model is used in [16] for modeling linear wound field resolver.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

On the Field-Reconstruction Method for Electromagnetic Modeling of Resolvers

Saneie

Nasiri‐Gheidari

Belahcen

2023

IEEE Trans. Instrum. Meas.

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“…Sinusoidal area linear resolvers are studied using WFM in [22]. Furthermore, the MEC model for linear tubular VR resolver is considered in [23]. However, the subject of all the mentioned literature is 1-DOF linear or rotational motion resolvers.…”

Section: Introductionmentioning

confidence: 99%

Improving the performance of helical motion resolver based on accurate modelling of longitudinal end effect

Zare

Nasiri‐Gheidari

2022

IET Electric Power Appl

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Using multiple position sensors in the control system of Two-Degrees of Freedom (2-DOF) motors causes it more complicated than that of conventional 1-DOF ones. However, employing a 2-DOF position sensor in comparison with two independent sensors, reduces the complexity, mass and volume of the system. The common 2-DOF sensors are able to determine the position in linear, rotational, and helical motion. Yet, they suffer from accuracy reduction due to the longitudinal end effect. Therefore, analytical modelling and the relevant compensation methods are discussed. The accuracy of the model is approved by comparing its results with those of 3D time transient finite element method. Afterwards, the model is used for compensating the end effects. Finally, the optimised 2-DOF resolver is prototyped and tested. The result of experimental test shows the proposed resolver's success.

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“…In [25], a VR linear resolver is explored via the WFT technique, and the end effect compensation is included in the model. A novel MEC-based method is applied to study a tubular VR linear resolver in healthy mode [26]. The former study does not include faulty conditions; this investigation is accomplished in the constant speed test.…”

Section: Introductionmentioning

confidence: 99%

A Novel Method for Accuracy Improvement of Variable Reluctance Linear Resolvers

2022

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1Abstract-A novel technique for accuracy improvement of the Variable Reluctance Linear resolvers (VR-L resolvers) is investigated in this paper. A well-known structure and 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/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.

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Analytical Modeling of Variable-Reluctance Tubular Resolver Based on Magnetic Equivalent Circuit and Conformal Mapping

Cited by 12 publications

References 22 publications

On the Field-Reconstruction Method for Electromagnetic Modeling of Resolvers

On the Field-Reconstruction Method for Electromagnetic Modeling of Resolvers

Improving the performance of helical motion resolver based on accurate modelling of longitudinal end effect

A Novel Method for Accuracy Improvement of Variable Reluctance Linear Resolvers

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