Development of Triaxis Electromagnetic Tactile Sensor With Adjustable Sensitivity and Measurement Range for Robot Manipulation

Xie, Shipeng; Zhang, Yuanfei; Zhang, Hao; Jin, Minghe

doi:10.1109/tim.2022.3159912

Cited by 17 publications

(2 citation statements)

References 37 publications

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“…The sensor consisted of a 12-turn primary coil, four 11-turn secondary coils, and a Polydimethylsiloxane elastomer containing a permanent magnet. [39] Mo et al proposed a tactile sensor that combines piezoresistive array films with an electromagnetic sensing unit based on a wound coil array and permanent magnets. The sensor can use the output voltage of the induction coil to recognize the sliding to detect shear force; the maximal cross-sensitivity of the sensor is ≈4.7%, and the maximal hysteresis is 3.3%.…”

Section: Introductionmentioning

confidence: 99%

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Flexible Electromagnetic Tactile Sensor Based on Double‐Layer High‐Density MEMS Coils and Tilted Magnetic Column Array

Liu,

Hou,

Liu

et al. 2024

Adv Materials Technologies

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With the rapid development of wearable devices, tactile sensors have received extensive attention as supplements to vision and hearing. However, it remains challenging for a single tactile sensor to generate distinguishable electrical signals when receiving mechanical stimuli in different directions. Herein, a novel flexible electromagnetic tactile sensor (FETS) prepared by combining flexible double‐layer coils and a flexible tilted magnetic column array (TMCA) is presented. Flexible double‐layer high‐density coils are fabricated using the micro‐electromechanical system (MEMS) technology. The turns of the coil (1 × 1 cm) are 100, while both the line width and spacing of turns are 40 µm. TMCA is prepared using a template and magnetized along the axis direction. When a pulling force or pressure is applied to the TMCA, the magnetic flux decreases or increases correspondingly, allowing the FETS to accurately distinguish stimuli and produce different signals (−/+ or +/−). The FETS presents a sensitivity of up to 21.7 µV kPa−1 (0.05–10 kPa), a minimal magnetic field detection limit of 10 mT, a low‐pressure detection limit of 5 g, and good repeatability (5000 cycles). Additionally, the FETS is applied in robotic tactile testing, Morse code, and noncontact magnetic field recognition. It has potential applications in the Internet of Things (IoT) and information communication.

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Section: Introductionmentioning

confidence: 99%

“…The sensor consisted of a 12‐turn primary coil, four 11‐turn secondary coils, and a Polydimethylsiloxane elastomer containing a permanent magnet. [ 39 ] Mo et al. proposed a tactile sensor that combines piezoresistive array films with an electromagnetic sensing unit based on a wound coil array and permanent magnets.…”

Section: Introductionmentioning

confidence: 99%