Spiral Spring-Supported Force Plate with an External Eddy Current Displacement Sensor

This study proposes a force plate with planar spring and an eddy current displacement sensor to measure the ground reaction (GRF) of small insect reveal its motion characteristics. The proposed comprises circular aluminum plate, four springs symmetrically connected under plate. diameter thickness fabricated were 8 0.1 mm, respectively. width was 0.4 mm. When is applied moves vertically downward. Then, detects without contact. can be measured using Hooke’s law. has advantages ease fabrication cost-effectiveness. central variation resonant frequency designed evaluated by simulation. we calibrated obtain sensitivity frequency. experimental results suggest that effectively GRF insect.