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2. 发明公开

KR1020030041089A 위치 결정 제어 장치 失效
标题翻译：定位控制器
公开(公告)号：KR1020030041089A
公开(公告)日：2003-05-23
申请号：KR1020020071030
申请日：2002-11-15
申请人： 가부시끼가이샤 히다찌 글로벌 스토리지 테크놀로지 니뽄
发明人： 아쯔미다께노리 , 고바야시마사히또 , 나까가와신스께
IPC分类号： G11B21/10
CPC分类号： G11B5/5526
摘要： PURPOSE: To make a head position highly accurately follow up a position track and a speed track even for the saturation of a VCM (voice coil motor) current as to the positioning system of a magnetic disk unit. CONSTITUTION: Internal models 42 to 44 and a track generation part 40 are structure in a control program and a model control part 41 calculates a 1st operation signal Umf and a 2nd operation signal Ums so that an operation signal for outputting the Ums for a fixed sample time Tu after the Umf outputted for the fixed sample time Tu matches a position track and a speed track where a position Pm and a speed Vm outputted by an internal model 2xTu second later are formed. When a detector 48 detects the saturation of a voice coil current for head movement, the signal obtained by subtracting a position feedback signal Uh from the detected voice coil current is inputted to the internal model to make the model follow up the controlled system, thereby preventing deterioration in control performance.
摘要翻译：目的：即使对于磁盘单元的定位系统的VCM（音圈电机）电流的饱和，也可以高精度地跟随位置轨迹和速度轨迹。构成：内部模型42至44和轨道生成部40是控制程序中的结构，模型控制部41计算第一操作信号Umf和第二操作信号Ums，使得用于输出固定样本的Ums的操作信号在固定采样时间Tu输出的Umf之后的时间Tu与形成由内部模型2xTu输出的位置Pm和速度Vm形成的位置轨道和速度轨迹相匹配。当检测器48检测到用于磁头移动的音圈电流的饱和度时，通过从检测到的音圈电流中减去位置反馈信号Uh而获得的信号被输入到内部模型，以使模型跟随受控系统，从而防止控制性能恶化。

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