硬盘知识培训讲义(ppt).ppt

Confidential,易拓硬盘培训教材,编辑: 钱舒 阮新发,一.硬盘基础知识,Confidential,硬盘的基本组成 (HDD Component),主轴马达 (Spindle Motor),盘片 (Disk),止动块 (Crash Stop),音圈马达 (Voice Coil Motor),循环过滤器 (Recircle Filter),磁头组件 (Head Stack),软性电路板 (FPC),斜块(Ramp),磁性锁 Magnetic latch,Confidential,电可擦写存储器 (EEPROM),主控芯片 (Interface Controller & CPU),马达控制芯片 (VCM & SPM Controller),电源接口 (Power Connector),数据线接口 (Interface Connector),读写通道 (R/W Channel),硬盘PCBA组成 (PCBA Component),Confidential,HDA结构示意图,压块(Top Clamp),顶盖(Top Cover),磁碟(Disk),下磁块 (Lower VCM),空气过滤器(Recycle Filter),产品标签 (S/N Label),主轴马达(Spindle Motor),底座(Base),斜块(Ramp),磁头组件 (Head ASM),软性电路板(FPC),止动器 (Crash Stop),上磁块 (Top VCM),Confidential,铜线圈,磁极二,磁极一,写入头,读回,屏蔽一,屏蔽二,磁阻式感应器,GMR磁头示意图,Confidential,Disk (盘片),When it flies,Wind (气流),Rotational direction (旋转方向),传统 CSS Mechanism 磁头起飞,Head (磁头),0.670.57 uIn,Confidential,木星系列 磁头起飞,Disk (高精密金属盘片),木星系列 (磁头不接触盘片启停机制),Head (磁头),Wind (气流),Rotational direction (旋转方向),当神奇飞机头起飞时 HEAD LOAD,神奇飛機頭, 0.3 uIn,Confidential,磁碟结构示意图,润滑层(Lubricant),保护层(Overcoat Layer),磁性材料层(Magnetic Layer),介面层(Under Layer),基材(Substructure),Confidential,磁道上记录性号示意图,Gray code,磁道编码 Servo burst, 控制磁头在轨道中央 Sector ID, 扇区地址,Confidential,工作原理 (Working of the Principle),AT or SCSI Controller 界面控制器,Time Base Generator 5. 时基产生器,Pulse Detector/AGC 2. 脉波侦测器/自动增益控制,Preamplifier 1. 前置放大器,Encoder/Decoder 4. 编码器/解码器,Filter/Equalizer 3. 滤波器/等化器,Data Syncronizer 6. 资料同步器,HSA,HSA