1. A method for measuring and calibrating resistive microtorque of a mechanical microcounter
- Author
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D.A. Atterbury, M.J. Lewis, H.G. Seymour, D. Fisher, Memis Acar, and J.W. Porro
- Subjects
Resistive touchscreen ,Mechanical counter ,Engineering ,Laser diode ,Angular displacement ,business.industry ,General Engineering ,Mechanical engineering ,Position sensitive device ,law.invention ,law ,Spring (device) ,Control theory ,Torque sensor ,Torque ,business - Abstract
This paper reports a technique for measuring the calibrating resistive input torque of a micro counter and gearbox assembly. The technique presented uses a hairspring (with a quantifiable output torque) to drive the input shaft to a mechanical counter and gearbox assembly in order to determine its resistive torque. The angular displacement of this spring, a parameter needed to compute the torque, is measured using a combination of a laser diode and a monolithic one-dimensional position sensitive device (PSD). This study includes the steps undertaken to develop it from a concept to functional prototype and interpretation of the results it yields. Tests show that in principle the use of a hairspring and PSD is a viable method of measuring micro-torque.
- Published
- 2009