A disk drive testing system cooling circuit includes a plurality of test racks. Each of the test racks include a test slot compartment and a test electronics compartment. Each of the test slot compartments includes multiple test slots, and one or more cooling conduits configured to convey a cooling liquid toward the test slots. Each of the test electronics compartments includes test electronics configured to communicate with the test slots for executing a test algorithm, and a heat exchanger in fluid communication with the one or more cooling conduits. The heat exchanger is configured to cool an air flow directed toward the test electronics.

Temperature control within disk drive testing systems

A storage device processing system that includes at least one automated transporter, at least one rack accessible by the at least one automated transporter, and multiple test slots housed by the at least one rack. Each test slot is configured to receive a storage device for testing. The storage device processing system includes a conveyor arranged in a loop around and being accessible by the at least one automated transporter. The conveyor receives and transports the storage device thereon. The at least one automated transporter is configured to transfer the storage device between the conveyor and one of the test slots of the at least one rack.

Processing Storage Devices

A disk drive testing system includes at least one robotic arm defining a first axis substantially normal to a floor surface. The robotic arm is operable to rotate through a predetermined arc about and extend radially from the first axis. Multiple racks are arranged around the robotic arm for servicing by the robotic arm. Each rack houses multiple test slots that are each configured to receive a disk drive transporter configured to carry a disk drive for testing.

Disk drive testing

A method of supplying disk drives to a disk drive testing system includes placing a disk drive tote, carrying multiple disk drives, in a presentation position accessible to an automated transporter of the disk drive testing system. The method includes actuating the automated transporter to retrieve one of the disk drives from the disk drive tote, and actuating the automated transporter to deliver the retrieved disk drive to a test slot of the disk drive testing system and insert the disk drive in the test slot.

Bulk Feeding Disk Drives to Disk Drive Testing Systems

A disk drive test slot includes a housing that defines a test compartment for receiving and supporting a disk drive transporter carrying a disk drive for testing. The housing also defines an open end that provides access to the test compartment for insertion and removal of disk drive transporter carrying a disk drive for testing. The disk drive test slot also includes a mounting plate connected to the housing. One or more isolators are disposed between the housing and the mounting plate. The one or more isolators are operable to inhibit transmission of vibrational energy between the housing and the mounting plate.

Vibration isolation within disk drive testing systems

PROBLEM TO BE SOLVED: To improve the control over a read/write head positioning means under a temperature varying condition by making a system include a control loop which is coupled with a 2nd member and generates a wide-band frequency signal for positioning the 2nd member at a desirable position relatively to a 1st member. SOLUTION: A position controller 30 applies a wide-band frequency control current of a 1st polarity to the 1st member (motor) 14 to make the 2nd member (read/write head) 18 start moving from a position on a track 20 to a position on a track 22. When the read/write head 18 approaches the track 22, a control current of the opposite polarity is applied to the motor 14. The position controller 30 is equipped with temperature input 36 for inputting a signal corresponding to the actual temperature of a disk drive constitution element. This signal varies the frequency of a notch filter to match with the natural resonance frequency(f) corresponding to specific temperature of a device 10. The notch filter removes the natural resonance frequency(f).

Servo system, operating method and control method thereof, and memory medium

A disk drive system includes a servo system for driving mechanical parts, including a read/write head, to a desired track on a disk. The mechanical parts undesirably resonate at a frequency f, where f is a function of a temperature t of those mechanical parts. The servo system includes a notch filter responsive to an indication of temperature t, to attenuate the amplitude of frequency f in a broadband control signal that is applied to move the mechanical parts.

Michael Freeze Gregory

Papers

Servo system, operating method and control method thereof, and memory medium

Servo system responsive to temperature changes