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Conceptual design of additive manufactured capacitive displacement sensors for adaptive pin array grippers
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Conceptual design of additive manufactured capacitive displacement sensors for adaptive pin array grippers
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Journal Article
Conceptual design of additive manufactured capacitive displacement sensors for adaptive pin array grippers
2025
Overview
This research presents a capacitive displacement sensor concept, designed for integration into a pin array gripper. The sensor employs a plate capacitor structure to measure the displacement of individual pins, with each pin positioned to move between the electrodes. The sensor is designed with sensing, guiding and shielding electrodes to maintain a homogeneous electric field between the capacitor plates and a linear capacitance response. We implemented a shielding strategy with the objective of minimising external interference and reducing mutual interference between individual displacement sensors. This ensures stable operation and reliable measurements, which are crucial for the reliable functioning in dynamic environments. The design is optimised for additive manufacturing, offering advantages in customisation, adaptability to various pin gripping systems and a compact form factor. It also opens up new possibilities for integrating sensing elements directly into the structure of the gripper. A prototype sensor was fabricated using additive manufacturing and tested in an experimental setup to validate its functionality and to enable a comparison of its performance against the results of numerical simulations.
Publisher
Copernicus GmbH,Copernicus Publications
Subject
