Editor’s Choice articles are based on recommendations by the scientific editors of MDPI journals from around the world. Editors select a small number of articles recently published in the journal that they believe will be particularly interesting to readers, or important in the respective research area. The aim is to provide a snapshot of some of the most exciting work published in the various research areas of the journal.

Xu, Zhengping, Yongtong Feng, Yi Liu, Fengxin Shi, Yang Ge, Han Liu, Wei Cao, Hong Zhou, Shuang Geng, and Wenqi Lin. 2024. "Single-Ended Eddy Current Micro-Displacement Sensor with High Precision Based on Temperature Compensation" Micromachines 15, no. 3: 366. https://doi.org/10.3390/mi15030366

Feature papers are submitted upon individual invitation or recommendation by the scientific editors and must receive positive feedback from the reviewers.

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Xu, Z., Feng, Y., Liu, Y., Shi, F., Ge, Y., Liu, H., Cao, W., Zhou, H., Geng, S., & Lin, W. (2024). Single-Ended Eddy Current Micro-Displacement Sensor with High Precision Based on Temperature Compensation. Micromachines, 15(3), 366. https://doi.org/10.3390/mi15030366

Xu, Z., Feng, Y., Liu, Y., Shi, F., Ge, Y., Liu, H., Cao, W., Zhou, H., Geng, S., & Lin, W. (2024). Single-Ended Eddy Current Micro-Displacement Sensor with High Precision Based on Temperature Compensation. Micromachines, 15(3), 366. https://doi.org/10.3390/mi15030366

Xu, Zhengping, Yongtong Feng, Yi Liu, Fengxin Shi, Yang Ge, Han Liu, Wei Cao, Hong Zhou, Shuang Geng, and Wenqi Lin. 2024. "Single-Ended Eddy Current Micro-Displacement Sensor with High Precision Based on Temperature Compensation" Micromachines 15, no. 3: 366. https://doi.org/10.3390/mi15030366

The stand-alone program SHAPE-THIN determines section properties of open and closed thin-walled cross-section and performs the stress analysis and plastic design.

Xu Z, Feng Y, Liu Y, Shi F, Ge Y, Liu H, Cao W, Zhou H, Geng S, Lin W. Single-Ended Eddy Current Micro-Displacement Sensor with High Precision Based on Temperature Compensation. Micromachines. 2024; 15(3):366. https://doi.org/10.3390/mi15030366

Xu, Z.; Feng, Y.; Liu, Y.; Shi, F.; Ge, Y.; Liu, H.; Cao, W.; Zhou, H.; Geng, S.; Lin, W. Single-Ended Eddy Current Micro-Displacement Sensor with High Precision Based on Temperature Compensation. Micromachines 2024, 15, 366. https://doi.org/10.3390/mi15030366

5x19cast

Abstract: To measure the micro-displacement reliably with high precision, a single-ended eddy current sensor based on temperature compensation was studied in detail. At first, the principle of the eddy current sensor was introduced, and the manufacturing method of the probe was given. The overall design plan for the processing circuit was induced by analyzing the characteristics of the probe output signal. The variation in the probe output signal was converted to pulses with different widths, and then it was introduced to the digital phase discriminator along with a reference signal. The output from the digital phase discriminator was processed by a low-pass filter to obtain the DC component. At last, the signal was amplified and compensated to reduce the influence of temperature. The selection criteria of the frequency of the exciting signal and the design of the signal conditioning circuit were described in detail, as well as the design of the temperature-compensating circuit based on the digital potentiometer with an embedded temperature sensor. Finally, an experimental setup was constructed to test the sensor, and the results were given. The results show that nonlinearity exists in the single-ended eddy current sensor with a large range. When the range is 500 μm, the resolution can reach 46 nm, and the repeatability error is ±0.70% FR. Within the temperature range from +2 °C to +58 °C, the voltage fluctuation in the sensor is reduced to 44 mV after temperature compensation compared to the value of 586 mV before compensation. The proposed plan is verified to be feasible, and the measuring range, precision, and target material should be considered in real-world applications. Keywords: eddy current sensor; micro-displacement; digital phase discriminator; temperature compensation

Xu, Z.; Feng, Y.; Liu, Y.; Shi, F.; Ge, Y.; Liu, H.; Cao, W.; Zhou, H.; Geng, S.; Lin, W. Single-Ended Eddy Current Micro-Displacement Sensor with High Precision Based on Temperature Compensation. Micromachines 2024, 15, 366. https://doi.org/10.3390/mi15030366

5x19episodes

Xu Z, Feng Y, Liu Y, Shi F, Ge Y, Liu H, Cao W, Zhou H, Geng S, Lin W. Single-Ended Eddy Current Micro-Displacement Sensor with High Precision Based on Temperature Compensation. Micromachines. 2024; 15(3):366. https://doi.org/10.3390/mi15030366

The stand - alone program SHAPE-MASSIVE determines section properties of any thick - walled cross - section and calculates the stresses. In addition, you can perform reinforced concrete design according to Eurocode 2 and other standards.

Feature papers represent the most advanced research with significant potential for high impact in the field. A Feature Paper should be a substantial original Article that involves several techniques or approaches, provides an outlook for future research directions and describes possible research applications.