Wide Linearity Range and Rapid‐Response Tactile Sensor Inspired by Parallel Structures

Gao, Weihua; Yao, Jiantao; Yu, Xianhe; Ma, Guoliang; Wang, Dakai; Yu, Hongnian; Han, Zhiwu; Ren, Luquan

Abstract

The synergistic enhancement of both linear range and response speed is crucial for simplifying the signal processing/conversion of tactile sensors and improving real-time perception. However, traditional tactile sensors face challenges in quantitatively controlling force-electrical response and viscoelastic hysteresis, limiting their linear sensing range and response speed. Inspired by parallel structures, Composite Parallel Tactile Sensors (CPTS-W and CPTS-S) is proposed, employing parallel elastomers to regulate deformation precisely. These sensors exhibit a wide sensing range up to 450 kPa, with three linear response regions: 0–50 kPa (sensitivity of 0.0080 kPa−¹), 50–98 kPa (sensitivity of 0.0022 kPa−¹), and 98–423 kPa (sensitivity of 0.0012 kPa−¹), significantly reduce dynamic recovery hysteresis of conductive composites, and enhance rapid response capability (48 ms response time and 39 ms recovery time). With excellent dynamic response characteristics across a wide linear sensing range, the results demonstrate broad applicability in areas such as physiological signal monitoring, complex object shape recognition, and multi-axis torque decoupling perception in robotics.

Citation

Gao, W., Yao, J., Yu, X., Ma, G., Wang, D., Yu, H., Han, Z., & Ren, L. (online). Wide Linearity Range and Rapid‐Response Tactile Sensor Inspired by Parallel Structures. Advanced Science, https://doi.org/10.1002/advs.202506783

• Journal Article Type: Article
• Acceptance Date: May 17, 2025
• Online Publication Date: Jun 29, 2025
• Deposit Date: Jul 14, 2025
• Publicly Available Date: Jul 14, 2025
• Journal: Advanced Science
• Print ISSN: 2198-3844
• Electronic ISSN: 2198-3844
• Publisher: Wiley
• Peer Reviewed: Peer Reviewed
• DOI: https://doi.org/10.1002/advs.202506783
• Keywords: fast response and recovery time, force-electric response regulation, multi-axis torque decoupling, tactile sensor, wide linear range