Objective evaluation is essential in medical treatment and rehabilitation; however, current methods often lack objectivity, relying heavily on therapists’ subjective judgment. To address this challenge and enable more precise and quantitative assessments, we have developed a sensing glove equipped with piezoresistive force sensors. However, piezoresistive force sensors can be subject to errors such as drift and hysteresis during prolonged or repeated use. Futhermore, inconsistencies in finger positioning during glove donning and doffing can result in significant variability in measured grip forces, even under identical actions. To overcome these issues, we have devised a novel calibration method that performs recalibrating before each measurement session. This paper presents the results of load tests on a prototype calibration device, with a focus on evaluating measurement accuracy, analyzing error factors, and considering effective error compensation strategies. Holding times and applied load values to were systematically varied to – assess output stability and fluctuation trends. We also clarified error tendencies by comparing measurements with a reference stand and propose effective compensation methods for error reduction. Additionally, we outliner plan to acquire necessary data and advance our calibration methodology for three-axis force analysis.
KORIYAMA et al. (Wed,) studied this question.