Tiltable device, in particular hard disk actuator device, with roll and pitch angle active control

A device comprising:

• a semiconductor material body;
• a position control structure coupled to the body;
• a platform coupled to the position control structure;
• control means for controlling the position control structure such that the structure moves the platform counter to pitch and roll movements of the body, maintaining thereby a selected position of the platform in spite of the pitch and roll movements.

A method comprising:

• detecting a deviation of a read/write head of a disk drive from a plane parallel to a plane of a hard disk;
• rotating the read/write head on first and second axes, perpendicular to each other and coplanar with the read/write head, in a direction opposite the direction of deviation, to return the head to a plane parallel with the plane of the hard disk;
• and
• wherein:
• the read/write head is affixed to a first surface of a platform having a conductive layer on a second surface thereof;
• the platform is coupled via a gimbal to a support structure;
• the support structure includes an electrode on a surface generally facing to second surface of the platform;
• and
• the rotating step comprises applying a first voltage potential to the conductive layer and a second voltage potential to the electrode.

A device, comprising:

• a read/write head suspension, including a support platform;
• a read/write head coupled to the support platform;
• means for detecting torsions of the suspension;
• and
• a control circuit configured to impart movement to the read/write head in counterphase to movement of the platform during a read/write operation of the read/write head.

A device, comprising:

• a read/write head suspension, including a support platform;
• a read/write head coupled to the support platform;
• means for detecting vibration in the suspension;
• and
• a control circuit configured to impart movement to the read/write head in counterphase to movement of the platform during a read/write operation of the read/write head.

A method, comprising:

• initiating a read/write sequence of a disk drive head;
• detecting a vibration of a support structure of the read/write head;
• and
• imparting, during the read/write sequence, movement to the read/write head in counterphase to the detected vibration, including imparting rotation about x and y axes to the read/write head.