Design and Application of Three-component Force Sensor Principle and Structural Progress

WANG Haibo, SUN Li, ZHU Jiajing

Three-component force sensors are capable of simultaneously detecting force or moment components in three directions in space, and are widely used in robotics, industrial automation, medical equipment, and sports technology. This article focuses on resistive-strain, capacitive, and piezoelectric three-component force sensors. Among them, the resistance strain type three-component force sensor has the characteristics of high precision, small creep and low manufacturing cost, so it is the most widely used in practice. The elastomer structure of combined and integral three-component force transducers is also distinguished and summarized. At present, the research and improvement work of this kind of sensor by scholars at home and abroad mainly focuses on reducing interdimensional coupling, improving sensitivity, reducing measurement error and reducing nonlinear error, so as to improve the actual performance. This paper also analyzes the performance of three-component force sensors in specific applications such as manipulator grasping and plantar force sensing. Finally, combined with the research and application status of three-component force sensors, the future development trend of the three-component force sensor is prospected, indicating that this technology will play an important role in more fields and is expected to develop in a more precise and intelligent direction.