Patent ID: 6586947
Filing Date: 2003-07-01
Classification: G01R

Abstract:
A method for inspecting a microactuator that comprises a capacitor having both poles thereof being freely displaced relative to each other with respect to an AC drive voltage and which displaces a specified object based on relative movements of both of the poles of said capacitor, said method comprising the steps of:supplying the AC drive voltage to said capacitor while changing a frequency thereof within a specified range; detecting a current value of a specified harmonic content of each frequency of the AC drive voltage from a current of said capacitor; detecting a relationship between a frequency, fa, and a current value, I, of said specified harmonic content as a first electric characteristic, fa-I, of said microactuator; and determining whether a mechanical characteristic of said microactuator is good or bad based on the first electric characteristic, fa-I, of said microactuator.