A Circuit Design of High-Precision Micro-Displacement Sensor System for DVD Pickup Head

The voice coil motor VCM will be removed in the structure, and we have designed a new high-precision displacement measurement of the circuit, which mainly includes focus error signal of the DVD (S curve) processing circuit, LD control circuit, open signal logic circuit, S curve linearity zone select...

Full description

Saved in:
Bibliographic Details
Main Authors: Li, Yong, Wu, Kui, Ai, Zhu-Jun
Format: Conference Proceeding
Language:English
Subjects:
DVD Optical Pickup
Focus Error Singal
Laser beams
LD control
Lenses
Linear Area
Measurement by laser beam
Micro/Nano Measuring
Noise measurement
Normalized
Optical variables measurement
Probes
Online Access:Request full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The voice coil motor VCM will be removed in the structure, and we have designed a new high-precision displacement measurement of the circuit, which mainly includes focus error signal of the DVD (S curve) processing circuit, LD control circuit, open signal logic circuit, S curve linearity zone selection and location to determine the circuit, the normalized circuit and other components, to achieve the accurate measurement of the micro-component (geometric dimensions for a few millimeters to a few microns, more precision parameters for the micro nanometer scale). It has simple structure, good linearity, high resolution, anti-interference capability, measuring in any environment., and other outstanding features.
ISSN:2156-8464
2156-8480
DOI:10.1109/SOPO.2012.6270450