VP11-06 Analysis of Receiving Coil Turns and Simplified Receiving Coil Configuration Effects on Inductive Angular Position Sensor Performance
Creators: Dan-Ping Xu 1*1*
Yi Zhao 1
Xinlin Wang1
Fanlin Zeng 2 and SangSang-Moon Hwang 3
Publisher: name: IEEE
Year: 2025

Inductive sensors are extensively utilized in automotive, motor, and industrial automation applications because of their high accuracy, reliability, and robust anti-interference capabilities [1]. Current researches on inductive angular position sensors aims to enhance measurement precision and reduce manufacturing costs. The sensor examined in this research features a rotor with four-phase pole pairs and a stator that includes excitation coils, receiving coils, and an integrated chip, all embedded on a PCB. The receiving coils shuttled back and forth as a sine shape or a cosine shape between the layers of excitation coil and connected by copper pillars as shown in Fig.1 (a) was named as one turn in this research. This study investigated the effects of the number of turns in the stator's receiving coils, as shown in Fig.1 the coil turns increasing from one turn in Type A to three turns in Type C, and the effects of simplified receiving coil design as Type D compared with Type A in Fig.1 in an inductive angular position sensor. In order to analyze the magnetic flux density, eddy current and induced voltage, four types were modeled and simulated by finite element method in transient electromagnetic field as shown in Fig.2 (a). The simulated induced voltages could be obtained in receiving coils, as shown in Fig.2 (b), and the simulated angular error could be processed in details following our previous work [2]. The detailed working principle and the effects of receiving coil turns and simplified receiving coil on inductive angular position sensor performance will be illustrated in the full manuscript. Four prototypes with different receiving coils will be manufactured and tested to verify the simulation results. This research contributes to the development of high-precision, cost-effective inductive angular position sensors by highlighting key considerations for the design of receiving coils.References: [1] Gao, W., H. Shi, and Q. Tang, A Contactless Planar Inductive Sensor for Absolute Angular Displacement Measurement. IEEE Access, 2021. 9: p. 160878-160886. [2] Dan-Ping Xu, Guochao Ma, Silong Fang, Fanlin Zeng, Sang-Moon Hwang “A Contactless Inductive Position Sensor with Four-Phase Rotor for Angular Displacement Detection.” IEEE transactions on magnetics, 60.2 (2024): 1–5.
Inductive sensors are extensively utilized in automotive, motor, and industrial automation applications because of their high accuracy, reliability, and robust anti-interference capabilities [1]. Current researches on inductive angular position sensors aims to enhance measurement precision and reduce manufacturing costs. The sensor examined in this research features a rotor with four-phase pole pairs and a stator that includes excitation coils, receiving coils, and an integrated chip, all embedded on a PCB. The receiving coils shuttled back and forth as a sine shape or a cosine shape between the layers of excitation coil and connected by copper pillars as shown in Fig.1 (a) was named as one turn in this research. This study investigated the effects of the number of turns in the stator's receiving coils, as shown in Fig.1 the coil turns increasing from one turn in Type A to three turns in Type C, and the effects of simplified receiving coil design as Type D compared with Type A in Fig.1 in an inductive angular position sensor. In order to analyze the magnetic flux density, eddy current and induced voltage, four types were modeled and simulated by finite element method in transient electromagnetic field as shown in Fig.2 (a). The simulated induced voltages could be obtained in receiving coils, as shown in Fig.2 (b), and the simulated angular error could be processed in details following our previous work [2]. The detailed working principle and the effects of receiving coil turns and simplified receiving coil on inductive angular position sensor performance will be illustrated in the full manuscript. Four prototypes with different receiving coils will be manufactured and tested to verify the simulation results. This research contributes to the development of high-precision, cost-effective inductive angular position sensors by highlighting key considerations for the design of receiving coils.References: [1] Gao, W., H. Shi, and Q. Tang, A Contactless Planar Inductive Sensor for Absolute Angular Displacement Measurement. IEEE Access, 2021. 9: p. 160878-160886. [2] Dan-Ping Xu, Guochao Ma, Silong Fang, Fanlin Zeng, Sang-Moon Hwang “A Contactless Inductive Position Sensor with Four-Phase Rotor for Angular Displacement Detection.” IEEE transactions on magnetics, 60.2 (2024): 1–5.