[PDF] Top 20 Design of a voice coil motor used in the focusing system of a digital video camera

... 3979 Design of a Voice Coil Motor Used in the Focusing System of a Digital Video Camera Hsing-Cheng Yu 1 , ... See full document

... IELD A NALYSIS Fig. 1 shows the cross-sectional structure of the VCM used for auto-focusing control of the lens for a digital CCD camera and ... See full document

... ONCLUSION In this paper, an FPGA-based servo control IC for the closed-loop control of VCM used in an auto-focus module of a mobile phone is ...proposed a fully ... See full document

... INTRODUCTION Digital video cameras are popular consumer electronic ...products. The conventional stepper actuators for autofocus- ing 共AF兲 can no longer meet the miniaturization of ... See full document

... with the position control of the voice coil motor 共VCM兲 with ...handshaking. A disturbance observer is proposed to estimate the low-frequency handshaking ... See full document

... NTRODUCTION Voice coil motors are widely used in the industry owing to their advantages of light weight, lowest price and good repeatability as digital camera and ... See full document

... Department of Mechanical Engineering, National Chiao Tung University, Hsinchu 30010, Taiwan, ...R.O.C. The output feedback sliding mode control offers an effective positioning method by robustness to ... See full document

... VCM focusing actuators, a novel LEA for AF of phone cameras is presented in this study as de- picted in ...2(a). The proposed LEA structure can be divided into two parts: ... See full document

... models of large machines belong to the equipments of high cost, some universities and colleges may be limited to their insufficient finances, resulting that they cannot purchase high-priced ... See full document

... In order to improve the excessive extraneous cognitive load of learners, this study proposed a video annotation learning system to facilitate learners can effectively learn the contents [r] ... See full document

... Fluoroscopy is a special type of X-ray that provides continuous X-ray images (or live video) of a patient's organ structures in real time.. It is used in many types of ex[r] ... See full document

... 合成 Digital Forensic Live DVD/USB，進行 Dead-analysis 鑑識分析，可以交叉使用各種工具，以補足單一工具鑑識 功能的不足，並針對關閉電源或拔除插頭可能造成的資料 流失，以自行撰寫之 Live-analysis 程式，收集開機時的系 統資訊，來補強數位證據採集的完整性，並以 MD5 及 SHA-1 計算檔案之 Hash ... See full document

... provide the exact description of collisional energy transfer, such calculations are not practical for the treatment of large polyatomic ...accuracy in describing many aspects of ... See full document

... wavelengths. In the present work, we applied homogenous illumination to reaction ...within the LCD/LED display may provide additional benets while monitoring microuidic ...arrangement of ... See full document

... wavelengths. In the present work, we applied homogenous illumination to reaction ...within the LCD/LED display may provide additional benets while monitoring microuidic ...arrangement of ... See full document

... LIM in ( I ) , the control objective is now to design a nonlinear adaptive thrust servo controller with rohusmess to variation of secondary resistance which guarantees the [r] ... See full document

... operation. The result always can converge to a pixel re-mapping ...operation. The disadvantage of traditional method does not consider the background or the environment ... See full document

... The motion data are the angle values of the motion chair at every sample time. They can be recorded by orientation trackers when the video is taken or from a 2D input device, f[r] ... See full document

... three-phase full-wave thyristor dual converter; the compensation for the nonlinear and loading effect in the converter; and compensations of position loop and rate loop.. With no current[r] ... See full document

... 5. The closed-loop control system of the ...3.3. System Identification for the OIS The OIS model is identified in this section based on experimental frequency ... See full document