摘要:
The present invention is an air bearing slider comprising a transducer for communicating with a disc; a composite slider body with a front portion composed of a first material and a rear portion composed of a second material; an air bearing surface defined on a disc opposing face of the composite slider body, where the air bearing surface comprises the front portion and the rear portion; and a transducer basecoat portion attached to the rear portion of the slider body and containing the transducer. During flight, the mechanical close point of the slider body is at the transducer pole tip.
摘要:
Apparatus and method for head-disc interface (HDI) modal response monitoring. A sensing element disposed on a rigid actuator arm is mechanically impedance matched to a head-disc interface (HDI) supported by the actuator arm to resonate at a predetermined frequency corresponding to at least one disturbance associated with the HDI.
摘要:
A micromechanical assembly couples to a positioning member and to a body having an aerodynamic surface subject to aerodynamic forces. The micromechanical assembly comprises a substrate including a flexible beam joining a first substrate portion that is attachable to the positioning member to a second substrate portion that is attachable to the body. The substrate includes a substrate surface extending at least over the flexible beam. A lithographic pattern is formed on the substrate surface. The lithographic pattern includes at least a first impedance element that senses flexing of the flexible beam. Contact pads are coupled to the lithographic pattern for coupling to a flex measurement circuit.
摘要:
A disc drive includes a disc, a beam extending from the voice coil motor to a gimbal point to provide a load force, and a slider that flies over the disc with a pole tip protrusion that has an ambient temperature sensitivity. The disc drive also includes a strut with a yielding bend section (YBS). Deposits of shape memory alloys (SMA) having different first and second transformation temperature ranges are deposited on the yielding bend section (YBS) and effectively reduce an ambient temperature sensitivity of the pole tip protrusion.
摘要:
A disc drive slider includes a slider body and a rail formed on the slider body. The rail includes a bearing surface which faces a surface of a disc. A textured portion is formed on the bearing surface of the rail. Pads are deposited on the textured portions. The pads operate to reduce stiction, dynamic friction, and the likelihood of damage to the slider or the surface of the disc due to contact therebetween.
摘要:
A disc drive assembly includes a housing, a disc, an actuator, a ramp and a slider. The ramp is positioned along an edge of the disc to engage a portion of the actuator when the actuator is in a parked position. The slider is supported over the disc by the actuator and includes first and second elongated rails. Each rail has a leading bearing surface, a trailing bearing surface, and a recessed area extending between the leading and trailing bearing surfaces. First and second convergent channels are recessed within the trailing bearing surfaces of the first and second rails, respectively. Each channel includes a leading channel end open to fluid flow from the respective recessed area, non-divergent channel side walls and a trailing channel end closed to the fluid flow and forward of a localized region of the respective trailing bearing surface.
摘要:
An air bearing slider for a disc drive has an overcoat localized on the air bearing surface to provide a continuous covering over a leading portion of the air bearing surface. The overcoat terminates in a trailing cut-off line, and a trailing portion of the air bearing surface is not covered by overcoat. The overcoat also covers the pole tips of the transducer at a pole tip recession from the air bearing surface. The leading portion covered by the overcoat includes all of the air bearing surface that contacts the disc during contact/start/stop, which is protected by a uniform continuous overcoat layer. The trailing cut-off line is disposed at an angle to expose the trailing corners of the air bearing surface, such that all of the overcoat is elevated above the lowermost portion of the air bearing surface through pitch and roll angles of flying at inner and outer radii. Methods of applying the localized overcoat include subtractive and additive photolithographic deposition processes. The overcoat over the pole tips protects the pole tips during subsequent processing steps of forming the slider cavity.
摘要:
Apparatus and method for head-disc interface (HDI) modal response monitoring. A sensing element disposed on a rigid actuator arm is mechanically impedance matched to a head-disc interface (HDI) supported by the actuator arm to resonate at a predetermined frequency corresponding to at least one disturbance associated with the HDI.
摘要:
A disc drive data storage system is disclosed that includes a disc storage medium having a disc surface. The system also includes an armature and a slider coupled to the armature. The slider supports a transducer head that communicates with the disc storage medium. The slider flies above the disc surface and positions the transducer head proximate the disc surface. Data representing a topography map of the disc surface is stored in a memory. A controller controls the fly height of the slider above the disc surface as a function of the topography map of the disc surface.
摘要:
A disc drive includes a head with an air bearing surface that provides a fly height spacing. A fly height spacing control system provides a control signal to a head electrical connection on a head and a disco electrical connection on a disc. Fly height is controlled electrostatically. A disconnect circuit couples the control signal to the disc electrical connection. The disconnect circuit provides a disconnection of the control signal when contact is sensed. A contact sensor senses an electrical current component of the control signal that indicates contact between the head and the disc.