A New Variable Reluctance PM-Resolver

Bahari, M.; Davoodi, Amirali; Saneie, Hamid; Tootoonchian, F.; Nasiri‐Gheidari, Zahra

doi:10.1109/jsen.2019.2941554

Cited by 52 publications

(14 citation statements)

References 24 publications

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“…hall sensors, magnetoresistive sensors, capacitive sensors, inductive sensors, encoders, resolver, and others. Among these sensors, the resolver is widely applied in harsh environments as it can resist high temperatures, vibrations, shocks, and contamination produced by oil, dust and mist [17][18][19][20]. Resolver receives a high-frequency excitation voltage and generates two amplitude-modulated voltages that depend on the angular position.…”

Section: Many Types Of Angular Position Sensors Were Developed For Inmentioning

confidence: 99%

Development of a Resolver-to-Digital Converter Based on Second-Order Difference Generalized Predictive Control

Estrabis¹,

Gentil²,

Cordero³

2021

Preprint

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High-performance motor drives that operate in harsh conditions require an accurate and robust angular position measurement to correctly estimate the speed and reduce the torque ripple produced by angular estimation error. For that reason, a resolver is used in motor drives as a position sensor due to its robustness. A resolver-to-digital converter (RDC) is an observer used to get the angular position from the resolver signals. Most RDCs are based on angle tracking observers (ATOs). On the other hand, generalized predictive control (GPC) has become a powerful tool in developing controllers and observers for industrial applications. However, no GPC-based RDC with zero steady-state error during constant speed operation was proposed. This paper proposes an RDC based on a second-order difference GPC (SOD-GPC). In SOD-GPC, the second-order difference operator is applied to design a GPC model with two embedded integrators. Thus, the SOD-GPC is used to design a type-II ATO whose steady-state angle estimation error tends to zero during constant speed operation. Simulation and experimental results prove that the proposed RDC system has better performance than other literature approaches.

show abstract

Section: Many Types Of Angular Position Sensors Were Developed For Inmentioning

confidence: 99%

Development of a Resolver-to-Digital Converter Based on Second-Order Difference Generalized Predictive Control

Estrabis¹,

Gentil²,

Cordero³

2021

Preprint

View full text Add to dashboard Cite

show abstract

“…The excitation winding units in the WR and VR models are located on the stationary or moving sections, respectively. Rotatory and linear structures are other categories for the resolvers [4], [5]. In previous studies, the position estimations are based on the induced voltages at output windings [6], [7].…”

Section: Introductionmentioning

confidence: 99%

“…Various structures are presented for the WR and VR resolvers [4], [5], [8], [9], and also it is investigated that WR resolvers have higher accuracies compared to the VR type. Although accuracy issues can make the WR resolvers superior to VRs, difficulties in the winding process and higher price structures are the main drawbacks of these resolvers in long-distance applications [10].…”

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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“…Many types of angular position sensors have been developed for industrial applications [12][13][14][15][16]: Hall sensors, magnetoresistive sensors, capacitive sensors, inductive sensors, encoders, resolver, and others. Among these sensors, the resolver is widely applied in harsh environments as it can resist high temperatures, vibrations, shocks, and contamination produced by oil, dust, and mist [17][18][19][20]. The resolver receives a high-frequency excitation voltage and generates two amplitude-modulated voltages that depend on the angular position.…”

Section: Introductionmentioning

confidence: 99%

Development of a Resolver-to-Digital Converter Based on Second-Order Difference Generalized Predictive Control

2021

View full text Add to dashboard Cite

High-performance motor drives that operate in harsh conditions require an accurate and robust angular position measurement to correctly estimate the speed and reduce the torque ripple produced by angular estimation error. For that reason, a resolver is used in motor drives as a position sensor due to its robustness. A resolver-to-digital converter (RDC) is an observer used to get the angular position from the resolver signals. Most RDCs are based on angle tracking observers (ATOs). On the other hand, generalized predictive control (GPC) has become a powerful tool in developing controllers and observers for industrial applications. However, no GPC-based RDC with zero steady-state error during constant speed operation has been proposed. This paper proposes an RDC based on the second-order difference GPC (SOD-GPC). In SOD-GPC, the second-order difference operator is applied to design a GPC model with two embedded integrators. Thus, the SOD-GPC is used to design a type-II ATO whose steady-state angle estimation error tends to zero during constant speed operation. Simulation and experimental results prove that the proposed RDC system has better performance than other literature approaches.

show abstract

A New Variable Reluctance PM-Resolver

Cited by 52 publications

References 24 publications

Development of a Resolver-to-Digital Converter Based on Second-Order Difference Generalized Predictive Control

Development of a Resolver-to-Digital Converter Based on Second-Order Difference Generalized Predictive Control

A Novel Method for Accuracy Improvement of Variable Reluctance Linear Resolvers

Development of a Resolver-to-Digital Converter Based on Second-Order Difference Generalized Predictive Control

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