音圈致動器動態建模與頻域分析

光碟機組件上，光學讀取頭為精密定位元件，定位控制精度需達到微米（μm）級，常用四弦型讀取頭雖可達高控制精度，但卻有結構設計之缺陷，造成於動態建模時產生具不確定性模組。本研究主要目的為對可避免產生不確定性因素之具音圈致動器之讀取頭光機構建立動態模組，進行聚焦與循軌之SISO系統分析。首先建立音圈致動器中之聚焦與循軌光機構機電特性動態模型，並以數值分析方法模擬分析探討線圈數與磁通密度對致動器頻域性能之影響，做為產業界研發改進之重要參考依據。

關鍵字

音圈致動器；聚焦光機構；循軌光機構；頻域分析

並列摘要

The optical pickup head that serves as a precision actuator in a digital versatile disk must be controlled to reach μ-meter precision position grade for focusing and tracking. A four-wire type actuator on the pickup head is used to approach the desired position. Generally, such a four-wire type of pickup head has a structural bug that results in uncertain modeling. The aim of this study is to model a rotary-magnetic restorative actuator that is able to avoid uncertain modeling. The first step is to model dynamic system of focusing and tracking actuators by electromechanical characteristics. Then, a numerical method is adopted to analyze the effects of changing the number of windings and fluxes on the actuator. It is hoped that the results of this research will have industrial applications in the future.

並列關鍵字

Coil Actuator ； Focusing Actuator ； Tracking Actuator ； Frequency Analysis

國際替代計量

音圈致動器動態建模與頻域分析

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