Design and Development of a Self-Calibration- Based Inductive Absolute Angular Position Sensor

Luo, Pinggui; Tang, Qifu; Jing, Huan; Chen, Xihou

doi:10.1109/jsen.2019.2908927

Cited by 22 publications

(14 citation statements)

References 16 publications

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“…Compared with [16] without structural optimization, the error peak decreases by about 50%. The experimental results should be pointed out that the manufacturing error and installation error of the sensor should be excluded.…”

Section: Experimental Verificationmentioning

confidence: 96%

“…The optimum contents of stator structure are as follows: trapezoidal groove clearance θ6, trapezoidal groove height r6−r5, stator teeth width d2, and air gap length drs. Firstly, in order to compare with the past experimental results of [16], and the number of rotor X and rotor Y must be mutual prime to realize self-correction. Thus, the number of stator teeth is 144, the number of rotor X teeth is 50, the number of rotor Y teeth is 128.…”

Section: Optimal Design With Melmmentioning

confidence: 99%

“…The experimental results should be pointed out that the manufacturing error and installation error of the sensor should be excluded. In addition to manufacture and installation, this experiment uses the same winding, circuit, and signal processing program as [16].…”

Section: Experimental Verificationmentioning

confidence: 99%

“…This improved sensor is called the angular displacement sensor with shared magnetic field. It can output absolute angular position and realize self-correction [16].…”

Section: Introductionmentioning

confidence: 99%

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Optimal Design of Angular Displacement Sensor with Shared Magnetic Field Based on the Magnetic Equivalent Loop Method

Luo¹,

Tang²,

Jing³

2019

Sensors

Self Cite

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Angular displacement sensor with shared magnetic field has strong environmental adaptability and high measurement accuracy. However, its 3-D structure is multi-pole double-layer structure, using time stepping finite element method (TSFEM) to optimize the structure is time-consuming and uneconomical. Therefore, a magnetic equivalent loop method (MELM) is proposed to simplify the optimal design of sensors. By reasonably setting the node position, the mechanical structure parameters, winding coefficients and input voltage of the sensor are integrated into a mathematical model to calculate of the induced voltage. The calculation results are compared with the simulation results, and a sensor prototype is made to test the optimized effect of the MELM.

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Section: Experimental Verificationmentioning

confidence: 96%

Section: Optimal Design With Melmmentioning

confidence: 99%

Section: Experimental Verificationmentioning

confidence: 99%

“…This improved sensor is called the angular displacement sensor with shared magnetic field. It can output absolute angular position and realize self-correction [16].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Optimal Design of Angular Displacement Sensor with Shared Magnetic Field Based on the Magnetic Equivalent Loop Method

Luo¹,

Tang²,

Jing³

2019

Sensors

Self Cite

View full text Add to dashboard Cite

show abstract

“…High-performance applications based on electrical motors drives, such as electric/hybrid vehicles (EV/HEVs), aircraft, CNCs, and robotics, work under harsh conditions [1][2][3]. In those applications, an accurate motor shaft angular position measurement is required to get the angular speed and to perform vector control techniques [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

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

Estrabis¹,

Gentil²,

Cordero³

2020

Preprint

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High-performance motor drives that operate in harsh conditions require an accurate and robust angular position measurement to properly 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 the development of 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 approaches in literature.

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An Encoding ASIC With Real‐Time Correction for Inductive Angular Sensing Systems

Zhao,

Wang,

Shen

et al. 2024

Circuit Theory & Apps

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This article presents an application specific integrated circuit (ASIC) for inductive angular sensing systems, integrating analog‐to‐digital converters (ADCs), digital signal processing (DSP) circuits, and a RISC‐V core on‐chip. The chip, fabricated in a 0.11‐μm CMOS process, is capable of real‐time error correction and angle encoding in response to nonideal factors such as offset, nonlinearity, and noise in the system's sensing signals. This integrated encoding solution could effectively address the issues of large system volume, saving hardware resources while achieving high precision angular measurement. A rotary encoder was additionally developed, utilizing a compact printed circuit board (PCB), which integrates the proposed ASIC, sensing front‐end circuits, and inductive coils. When the on‐chip real‐time correction is enabled, the resolution of the encoder is improved from 0.3516° to 0.0054°, and the nonlinearity error in the 360° range is reduced from 0.5507° to 0.0320°. Besides, the nonlinear error has decreased by more than 90% at different rotation speeds.

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Design and Development of a Self-Calibration- Based Inductive Absolute Angular Position Sensor

Cited by 22 publications

References 16 publications

Optimal Design of Angular Displacement Sensor with Shared Magnetic Field Based on the Magnetic Equivalent Loop Method

Optimal Design of Angular Displacement Sensor with Shared Magnetic Field Based on the Magnetic Equivalent Loop Method

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

An Encoding ASIC With Real‐Time Correction for Inductive Angular Sensing Systems

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