JP2006216170A5 - - Google Patents
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- JP2006216170A5 JP2006216170A5 JP2005028779A JP2005028779A JP2006216170A5 JP 2006216170 A5 JP2006216170 A5 JP 2006216170A5 JP 2005028779 A JP2005028779 A JP 2005028779A JP 2005028779 A JP2005028779 A JP 2005028779A JP 2006216170 A5 JP2006216170 A5 JP 2006216170A5
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Claims (13)
前記ヘッドを支持する弾性部材を有しかつ、該ヘッドを前記ディスク上で位置決めする微動アクチュエータと、
ボイスコイルモータと、該ボイスコイルモータに設けられかつ、前記微動アクチュエータが搭載されたアームとを有しかつ、前記ヘッドを前記微動アクチュエータと共に前記ディスク上で移動させる主アクチュエータと、
前記ヘッドの再生信号に基づいて前記ヘッドの位置を検出しかつ、その位置信号を出力するヘッド位置検出手段と、
モード切替信号を出力することによって、制御モードを、目標トラックへのアクセス動作を行うアクセス動作モード、トラック追従動作を行うトラック追従動作モード、又はアクセス動作からトラック追従動作へ移行するための整定動作を行う整定動作モード、に切り替える制御モード指令手段と、
前記ヘッド位置検出手段からの位置信号を基に、前記制御モード指令手段からの前記モード切替信号に応じた主制御信号を生成しかつ、その主制御信号を出力する主制御手段と、
前記主制御手段からの主制御信号に応じて、前記主アクチュエータを駆動する主駆動手段と、
前記ヘッド位置検出手段からの位置信号に基づいて微動制御信号を生成する微動制御手段と、
前記微動制御手段からの微動制御信号に応じた電圧信号を前記微動アクチュエータに印加することによって、該微動アクチュエータを駆動する微動駆動手段と、を備え、
前記微動制御手段は、前記位置信号に対してフィルタリング処理を行う高域通過フィルタと、前記制御モード指令手段からのモード切替信号に基づき、前記制御モードが整定動作モード又はトラック追従動作モードのときに、前記位置信号を前記高域通過フィルタに出力する切替スイッチと、を有するディスク装置。 At least a head for reproducing information stored on the disk;
A fine actuator having an elastic member for supporting the head and positioning the head on the disk;
A main actuator that has a voice coil motor, an arm provided on the voice coil motor and on which the fine actuator is mounted, and that moves the head on the disk together with the fine actuator;
Head position detecting means for detecting the position of the head based on a reproduction signal of the head and outputting the position signal;
By outputting a mode switching signal, the control mode can be changed to an access operation mode for performing an access operation to the target track, a track following operation mode for performing a track following operation, or a settling operation for shifting from an access operation to a track following operation. A control mode command means for switching to a settling operation mode to be performed;
Based on the position signal from the head position detection means, a main control means for generating a main control signal according to the mode switching signal from the control mode command means and outputting the main control signal;
Main drive means for driving the main actuator in response to a main control signal from the main control means;
Fine movement control means for generating a fine movement control signal based on a position signal from the head position detection means;
Fine movement drive means for driving the fine movement actuator by applying a voltage signal corresponding to the fine movement control signal from the fine movement control means to the fine movement actuator,
The fine movement control means is based on a high-pass filter that performs filtering processing on the position signal and a mode switching signal from the control mode command means, and when the control mode is settling operation mode or track following operation mode. A changeover switch that outputs the position signal to the high-pass filter .
前記高域通過フィルタは、前記制御モードが整定動作モードのときの遮断周波数を、トラック追従動作モードのときの遮断周波数よりも高く設定するディスク装置。 The disk device according to claim 1,
The high-pass filter is a disk device that sets a cutoff frequency when the control mode is a settling operation mode to be higher than a cutoff frequency when the control mode is a track following operation mode.
前記高域通過フィルタは、前記制御モードが整定動作モードであるときの遮断周波数を、前記主アクチュエータがトラック追従動作を行うときの制御帯域よりも高く設定するディスク装置。 The disk device according to claim 1 or 2,
The high-pass filter is a disk device that sets a cutoff frequency when the control mode is a settling operation mode higher than a control band when the main actuator performs a track following operation.
前記微動制御手段は、前記位置信号を積分する積分器を含むディスク装置。 The disk device according to claim 1,
The fine movement control means is a disk device including an integrator for integrating the position signal.
前記微動制御手段は、前記微動アクチュエータが規定の動作範囲内で動作するように前記微動制御信号の大きさを制限するリミッタを含むディスク装置。 The disk device according to claim 1,
The fine movement control means includes a limiter that limits the magnitude of the fine movement control signal so that the fine movement actuator operates within a specified operation range.
前記微動制御手段は、前記位置信号の、前記微動アクチュエータの共振周波数と略等しい周波数成分を減衰させるノッチフィルタを含むディスク装置。 The disk device according to claim 1,
The fine motion control means includes a notch filter that attenuates a frequency component of the position signal substantially equal to a resonance frequency of the fine motion actuator.
前記微動アクチュエータは、前記弾性部材に取り付けられた圧電素子を有するディスク装置。 The disk device according to any one of claims 1 to 6,
The fine movement actuator is a disk device having a piezoelectric element attached to the elastic member.
前記ヘッドの再生信号に基づいて前記ヘッドの位置を検出しかつ、その位置信号を生成する位置信号生成工程と、
制御モードを、目標トラックへのアクセス動作を行うアクセス動作モード、トラック追従動作を行うトラック追従動作モード、又はアクセス動作からトラック追従動作へ移行するための整定動作を行う整定動作モード、に切り替える制御モード切替工程と、
前記位置信号を基に、前記制御モードに応じた主制御信号を生成すると共に、前記主制御信号に応じて前記主アクチュエータを駆動する主アクチュエータ駆動工程と、
前記位置信号に基づいて微動制御信号を生成する微動制御信号生成工程と、
前記制御モードが整定動作モード又はトラック追従動作モードのときに、前記微動制御信号に応じた電圧信号を前記微動アクチュエータに印加することによって、該微動アクチュエータを駆動する微動アクチュエータ駆動工程と、を包含し、
前記微動制御信号生成工程では、前記位置信号の高域成分を通過させるフィルタリング処理を行うディスク装置の制御方法。 A head that reproduces at least information stored in the disk, an elastic member that supports the head, and a fine movement actuator that positions the head on the disk; a voice coil motor; and the voice coil motor, And a main actuator for moving the head on the disk together with the fine actuator, and an arm on which the fine actuator is mounted,
A position signal generating step of detecting the position of the head based on the reproduction signal of the head and generating the position signal;
Control mode for switching the control mode to an access operation mode for performing an access operation to a target track, a track following operation mode for performing a track following operation, or a settling operation mode for performing a settling operation for shifting from an access operation to a track following operation Switching process;
Generating a main control signal according to the control mode based on the position signal, and driving the main actuator according to the main control signal; and
A fine movement control signal generating step for generating a fine movement control signal based on the position signal;
A fine actuator driving step of driving the fine actuator by applying a voltage signal corresponding to the fine actuator to the fine actuator when the control mode is a settling operation mode or a track following operation mode. ,
In the fine movement control signal generation step, a disk device control method for performing a filtering process for passing a high frequency component of the position signal.
前記フィルタリング処理では、前記制御モードが整定動作モードであるときの遮断周波数を、トラック追従動作モードであるときの遮断周波数よりも高く設定する制御方法。 The disk device control method according to claim 8, comprising:
In the filtering process, the cutoff frequency when the control mode is a settling operation mode is set higher than the cutoff frequency when the control mode is a track following operation mode.
前記フィルタリング処理では、前記制御モードが整定動作モードであるとき前記遮断周波数を、前記主アクチュエータがトラック追従動作を行うときの制御帯域よりも高く設定する制御方法。 A method of controlling a disk device according to claim 8 or 9,
In the filtering process, when the control mode is a settling operation mode, the cutoff frequency is set higher than a control band when the main actuator performs a track following operation.
前記微動制御信号生成工程では、前記位置信号を積分して微動制御信号を生成する制御方法。 The disk device control method according to claim 8, comprising:
In the fine movement control signal generating step, the fine movement control signal is generated by integrating the position signal.
前記微動制御信号生成工程では、前記微動アクチュエータが規定の動作範囲内で動作するように前記微動制御信号の大きさを制限する制御方法。 The disk device control method according to claim 8, comprising:
In the fine movement control signal generating step, a control method for limiting a magnitude of the fine movement control signal so that the fine movement actuator operates within a specified operation range.
前記微動制御信号生成工程では、前記位置信号の、前記微動アクチュエータの共振周波数と略等しい周波数成分を減衰させる制御方法。 The disk device control method according to claim 8, comprising:
In the fine movement control signal generation step, a control method for attenuating a frequency component of the position signal substantially equal to a resonance frequency of the fine movement actuator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005028779A JP2006216170A (en) | 2005-02-04 | 2005-02-04 | Disk drive and its control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005028779A JP2006216170A (en) | 2005-02-04 | 2005-02-04 | Disk drive and its control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2006216170A JP2006216170A (en) | 2006-08-17 |
| JP2006216170A5 true JP2006216170A5 (en) | 2007-12-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2005028779A Pending JP2006216170A (en) | 2005-02-04 | 2005-02-04 | Disk drive and its control method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2006216170A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5023221B2 (en) * | 2011-01-28 | 2012-09-12 | 株式会社東芝 | Magnetic disk device and microactuator control method in the same |
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2005
- 2005-02-04 JP JP2005028779A patent/JP2006216170A/en active Pending
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