Proposal for a step response evaluation method for force transducers
Yusaku Fujii · Measurement Science and Technology · 2003
A method is proposed for evaluating the dynamic response of force transducers to a step force. In the method, gravitational and inertial forces acting on an object, which is suddenly put on a force transducer under test, are used as the reference force. At the beginning of the evaluation, the object is suspended using a wire just above the transducer. The object is then made to fall on to the transducer by cutting the wire. To realize perpendicular motion with sufficiently small friction, a pneumatic linear bearing is used. The inertial force acting on the object is measured highly accurately by measuring the velocity of the mass using an optical interferometer.