A High-Resolution Self-Powered Angular Displacement Sensor Based on Triboelectric Nanogenerator With Time-Grating

Area of Science:

• Engineering
• Materials Science
• Physics

Background:

• Angular displacement sensors are vital for electromechanical equipment control.
• Traditional sensors have limitations in size, weight, and power requirements.
• Need for miniaturized, efficient, and reliable sensor solutions.

Purpose of the Study:

• To develop a self-powered angular displacement sensor (SPADS).
• To utilize triboelectric nanogenerator (TENG) principles and time-grating technology.
• To overcome limitations of conventional angular displacement sensors.

Main Methods:

• Designed a compact SPADS with a stator and rotor structure.
• Employed dual-sinusoidal copper electrodes on the rotor and fan-shaped electrodes with PTFE on the stator.
• Modulated triboelectric signals with high-frequency pulses for phase detection.

Main Results:

• Achieved a theoretical resolution of 5.18 arcseconds.
• Demonstrated measurement accuracy within ±716 arcseconds.
• Validated performance through simulations and experimental tests.

Conclusions:

• SPADS offers a promising self-powered solution for angular displacement sensing.
• The technology is suitable for miniaturized, efficient, and reliable intelligent equipment.
• This advancement addresses key challenges in motion control and feedback systems.