Temperature-adaptive open-loop control of active latch

Abstract

An apparatus and method for latching an actuator arm assembly can position a read/write head relative to a data storage disk in a disk drive. A latch arm is configured to be moved between a closed position that inhibits movement of an actuator arm assembly in a landing zone and an open position that does not inhibit movement of the actuator arm assembly in the landing zone. A coil is configured to generate an electromagnetic force on the latch arm responsive to a coil current. A bias device is configured to provide a bias force on the latch arm that is substantially opposed to the electromagnetic force from the coil. The latch operating current/voltages is controlled and modified according to environmental conditions such as temperature.

Dependencies are inferred from the claim text.