A method for measuring frequency response characteristic to evaluate the stability of a voice coil motor actuator and a device therefor

Disclosed is a frequency response characteristic measurement apparatus to provide an open loop frequency response characteristic analysis (FRA) method. According to the present invention, the frequency response characteristic measurement apparatus comprises: an auto-focus (AF) driving unit providing...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	SHIN GYEONG BEOM, JANG SEON WOONG, JUNG HUY CHAN
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION MEASURING MEASURING ELECTRIC VARIABLES MEASURING MAGNETIC VARIABLES PHYSICS TESTING
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