Piezoelectric mount force sensor of placement system for surface mount devices

摘要

This paper describes piezoelectric force sensor of a placements system for surface mount devices. Electric charge of the piezoelectric sensor was converted into voltage signal with charge amplifier. and then, in the developed method, a satisfactory measurement of the chip placement force was accomplished by compensation for the voltage signal. This compensation was based on an integral compensation for a transfer function of the charge amplifier. As a result, an effectuality of piezoelectric devices for mount force sensor was confirmed.