Biomimetic Tactile Sensor Array Based on Magnetostrictive Materials

Gao, Shaoyang; Weng, Ling; Deng, Zhangxian; Wang, Bowen; Huang, Wenmei

doi:10.1109/jsen.2021.3068160

Cited by 23 publications

(11 citation statements)

References 29 publications

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“…Various grasp sensors have been proposed [ 46 , 47 , 48 , 49 , 50 , 51 , 52 , 53 , 54 , 55 , 56 , 57 , 58 , 59 , 60 , 61 , 62 , 63 , 64 , 65 ], including MEMS sensors [ 51 , 52 , 53 , 54 , 55 , 56 , 57 , 58 , 59 , 60 , 61 , 62 , 63 ], some of which were able to measure normal and tangential forces [ 58 , 59 , 60 ]. However, they had complex structures and required special detection circuits.…”

Section: Discussionmentioning

confidence: 99%

Application of High-Photoelasticity Polyurethane to Tactile Sensor for Robot Hands

et al. 2022

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We developed a tactile sensor for robot hands that can measure normal force (FZ) and tangential forces (FX and FY) using photoelasticity. This tactile sensor has three photodiodes and three light-emitting diode (LED) white light sources. The sensor is composed of multiple elastic materials, including a highly photoelastic polyurethane sheet, and the sensor can detect both normal and tangential forces through the deformation, ben sding, twisting, and extension of the elastic materials. The force detection utilizes the light scattering resulting from birefringence.

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Section: Discussionmentioning

confidence: 99%

Application of High-Photoelasticity Polyurethane to Tactile Sensor for Robot Hands

et al. 2022

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“…where m 0 is the permeability of vacuum, H is the applied bias magnetic field strength, M s is the saturation magnetization, a is the nonhysteresis magnetization shape coefficient, a is the domain wall interaction coefficient, l s is the saturation magnetostriction coefficient of Galfenol wire and s is the stress (Gao et al, 2021). The geometric size of the wire cross section is much smaller than the axial geometric size, which is regarded as a simplified cantilever beam structure (Gao et al, 2021). According to Euler-Bernoulli beam structural dynamics theory, the relationship between the deflection of the cantilever beam and force is as follows:…”

Section: Measurement Model Of Depth Detectionmentioning

confidence: 99%

“…Based on the magnetic theory, B Gal in Galfenol wire is: where μ 0 is the permeability of vacuum, H is the applied bias magnetic field strength, M s is the saturation magnetization, a is the nonhysteresis magnetization shape coefficient, α is the domain wall interaction coefficient, λ s is the saturation magnetostriction coefficient of Galfenol wire and σ is the stress (Gao et al , 2021).…”

Section: Measurement Model Of Depth Detectionmentioning

confidence: 99%

“…Li et al (2019) designed a bionic tactile finger with Galfenol as the sensitive material to measure stiffness by contact with objects. Gao et al (2021) designed a tactile sensor array for pressure sensing, which increased the detection area of the sensor. However, due to structural limitations, the present magnetostrictive sensor has a small detection range in the vertical (or depth) direction and a large contact area with the surface of the object, so it is difficult to perceive the subtle contour information on the surface of the object and has a poor ability to detect the contour depth.…”

Section: Introductionmentioning

confidence: 99%

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Design of magnetostrictive tactile sensor for depth detection

Weng

Luo

et al. 2023

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Purpose This paper aims to design a magnetostrictive tactile sensor for surface depth detection. Unlike the human finger, although most tactile sensors have high sensitivity to pressure, they cannot detect millimeter-level depth information on the surface of objects precisely. To enhance the ability to detect surface depth information, a piezomagnetic sensor combining inverse magnetostrictive effect and bionic structure is developed in this paper. Design/methodology/approach A magnetostrictive tactile sensor based on Galfenol [(Fe83Ga17)99.4B0.6] is designed and studied for surface depth measurement. The optimal structure of the sensor is determined by experiment and theory. The test platforms for static and dynamic characteristics are set up. The static and the dynamic sensing performance of the sensor are studied experimentally. Findings The sensor can detect 0–2 mm depth change with a sensitivity of 91.5 mV/mm. A resolution of 50 µm can be achieved in the depth direction. In 50 cycles of loading and unloading tests, the maximum error of the sensor output voltage amplitude is only 2.23%. Originality/value The sensor can measure the depth information of object surface precisely with good repeatability through sliding motion and provide reference for object surface topography detection.

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“…One end of the cantilever beam was fixed, and the other end bent with force, resulting in a change of magnetic field. They successively used commercial Hall and TMR sensors to detect the change [ 49 , 72 , 105 , 106 ]. The sensitivity of this device is 126 mV/N in the range of 0–3 N.…”

Section: Classification and Developmentmentioning

confidence: 99%

Recent Progress of Biomimetic Tactile Sensing Technology Based on Magnetic Sensors

Man

Chen

2022

Biosensors

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In the past two decades, biomimetic tactile sensing technology has been a hot spot in academia. It has prospective applications in many fields such as medical treatment, health monitoring, robot tactile feedback, and human–machine interaction. With the rapid development of magnetic sensors, biomimetic tactile sensing technology based on magnetic sensors (which are called magnetic tactile sensors below) has been widely studied in recent years. In order to clarify the development status and application characteristics of magnetic tactile sensors, this paper firstly reviews the magnetic tactile sensors from three aspects: the types of magnetic sensors, the sources of magnetic field, and the structures of sensitive bodies used in magnetic tactile sensors. Secondly, the development of magnetic tactile sensors in four applications of robot precision grasping, texture characterization, flow velocity measurement, and medical treatment is introduced in detail. Finally, this paper analyzes technical difficulties and proposes prospective research directions for magnetic tactile sensors.

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Biomimetic Tactile Sensor Array Based on Magnetostrictive Materials

Cited by 23 publications

References 29 publications

Application of High-Photoelasticity Polyurethane to Tactile Sensor for Robot Hands

Application of High-Photoelasticity Polyurethane to Tactile Sensor for Robot Hands

Design of magnetostrictive tactile sensor for depth detection

Recent Progress of Biomimetic Tactile Sensing Technology Based on Magnetic Sensors

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