Thermal compensation is provided to a seek mode servo loop of a disk drive having a head and disk assembly including a spindle motor for rotating at least one data storage disk and an electromechanical actuator structure for positioning a data transducer head relative to concentric data tracks defined...http://www.google.com/patents/US5128813?utm_source=gb-gplus-sharePatent US5128813 - Thermal compensated head positioner servo for disk drive
