Dynamic Characteristics Measurements of a Force Transducer Against Small and Short-Duration Impact Forces

Abstract

A method for evaluating the dynamic characteristics of force transducers against small and short-duration impact forces is developed. In this method, a small mass collides with a force transducer and the impact force is measured with high accuracy as the inertial force of the mass. A pneumatic linear bearing is used to achieve linear motion with sufficiently small friction acting on the mass, which is the moving part of the bearing. Small and short-duration impact forces with a maximum impact force of approximately 5 N and minimum half-value width of approximately 1 ms are applied to a force transducer and the impulse responses are evaluated.

Measurement of Dynamic Responses of a Force Sensor against Small Impact Forces with Various Durations

“…At present, the impact responses of the force sensors with maximum capacity of 200 N have been evaluated by impact forces with full width at half maximum (FWHM) width which is greater than approximately 5 ms. Furthermore, a method for evaluating dynamic characteristics of the force sensors against small and short-duration impact forces has been developed [6]. In this study, small and short-duration impact forces with maximum impact force of approximately 5 N and minimum FWHM of approximately 1 ms were applied to the force sensor and the impact responses were evaluated.…”

Software for Correcting the Dynamic Error of Force Transducers

“…A method, i.e. , the Levitation Mass Method (LMM), has been proposed for dynamic force calibration [ 1 , 2 ]. In the LMM, varying forces, such as an impact force, an oscillation force and a step force, are applied to the transducer as the inertial forces of a mass supported using an aerostatic linear bearing, i.e.…”