Development of Noncontact Microdistance-measurement Devices Based on Giant Magnetoresistance Sensors

• DOI: 10.18494/sam4874
• Publication Date: 2024-06-18T22:10:51Z
• Authors: Hung-Yih Tsai; Ming-Chi Chiou; Ben-Fong Yu

Processing machines require various sensors for process monitoring and control to improve processing accuracy.Sensors become a critical factor in both automated production intelligent manufacturing.It is interesting that the accuracy of microdistance-measurement device affects fine-tuning quality cutting tools.In this work, we developed noncontact microdistance sensor based on giant magnetoresistance (GMR) effect by combining neodymium magnet with tool slider.The slider displaceable along axis rotation adjustment.Thus, distance between GMR altered when rotary adjuster moves corresponding voltage output can be measured under changing magnetic field.The experimental results show measurement sensitivity reach 4.68 mV/μm linear approximately 2.54 V at full-scale range.The significant advantage being less prone wear not dampening motion target leads important applications several areas engineering shows potential further improvement provide suitable structure practical applications.