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

Abstract

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.