Magnetostrictive tactile sensor array for force and stiffness detection

Weng, Ling; Xie, Guanran; Zhang, Bing; Huang, Wenmei; Wang, Bowen; Deng, Zhangxian

doi:10.1016/j.jmmm.2020.167068

Cited by 18 publications

(8 citation statements)

References 16 publications

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“…To obtain these sensors, metal particles [10], carbon nanotubes (CNT) [34,35], carbon black [36], graphene [37][38][39], or nanowires [22,40] have been introduced into the polymer used in the sensor. In a recent paper [41], a magnetoresistive sensor was fabricated with permanent magnets in the form of Fe-Ga wires and Hall sensors to detect static and dynamic force fields and the degree of rigidity of an object touched. It was a piezoresistive sensor with a sensitivity of 166 mV/m, which was able to detect forces with values up to 3 N and had applications in making prostheses or robots with a precise grip and an intelligent control of objects touched.…”

Section: Introductionmentioning

confidence: 99%

Magneto-Tactile Sensor Based on a Commercial Polyurethane Sponge

2022

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In this paper, we present the procedure for fabricating a new magneto-tactile sensor (MTS) based on a low-cost commercial polyurethane sponge, including the experimental test configuration, the experimental process, and a description of the mechanisms that lead to obtaining the MTS and its characteristics. It is shown that by using a polyurethane sponge, microparticles of carbonyl iron, ethanol, and copper foil with electroconductive adhesive, we can obtain a high-performance and low-cost MTS. With the experimental assembly described in this paper, the variation in time of the electrical capacity of the MTS was measured in the presence of a deforming force field, a magnetic field, and a magnetic field superimposed over a deformation field. It is shown that, by using an external magnetic field, the sensitivity of the MTS can be increased. Using the magnetic dipole model and linear elasticity approximation, the qualitative mechanisms leading to the reported results are described in detail.

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Section: Introductionmentioning

confidence: 99%

Magneto-Tactile Sensor Based on a Commercial Polyurethane Sponge

2022

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“…E is the Young's modulus, R is the radius of the hemispherical structure, v is the Poisson's ratio, and t is the thickness. [40][41][42] Therefore, the variation of magnetic flux density and the applied force is approximately linear (the specific derivation process of the formula is shown in Supporting Information). We also simulated the performance of the simulated deep-sea environment force sensor with hollow structure (HS) and solid structure (SS) in the deep-sea environment, as shown in Figure 3b.…”

Section: Hydrostatic Pressure-balanced Simulated Deep-sea Environment...mentioning

confidence: 99%

Tactile Sensing for Soft Robotic Manipulators in 50 MPa Hydrostatic Pressure Environments

Liu,

Zhang,

et al. 2023

Advanced Intelligent Systems

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Deep‐sea exploration remains a challenging task as the extreme hydrostatic pressure environment, darkness, and suspended sediment launch severely hinder the capability of deep‐sea vehicles. As a complement to underwater camera, tactile perception becomes especially important in situations where machine vision is limited. However, tactile sensors utilized in deep sea, which should be able to detect pressure changes of only hundreds of pascals under high hydrostatic pressure, are still lacking. To tackle the challenge imposed by hydrostatic pressure, a simulated deep‐sea environment flexible sensor (SDEFS) is proposed, consisting of a force sensor array and a bending sensor based on hydrogels for tactile sensing in 50 MPa hydrostatic pressure environments. The force sensor is unaffected by the hydrostatic pressure and achieves high sensitivity of 82.62 N−1 under 100 MPa hydrostatic pressure. The SDEFS is utilized to classify objects based on the difference in hardness. It can accurately classify seven objects on the ground, and three objects in an underwater environment with hydrostatic pressure of 50 MPa, with total recognition accuracies of 98.3% and 96%, respectively. With high force measurement sensitivity and accurate recognition ability under water, the SDEFS is expected to provide very valuable haptic sensing and feedback in deep‐sea exploration.

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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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Magnetostrictive tactile sensor array for force and stiffness detection

Cited by 18 publications

References 16 publications

Magneto-Tactile Sensor Based on a Commercial Polyurethane Sponge

Magneto-Tactile Sensor Based on a Commercial Polyurethane Sponge

Tactile Sensing for Soft Robotic Manipulators in 50 MPa Hydrostatic Pressure Environments

Recent Progress of Biomimetic Tactile Sensing Technology Based on Magnetic Sensors

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