Electricity: motive power systems – Positional servo systems – Adaptive or optimizing systems including 'bang-bang' servos
Patent
1993-01-27
1994-08-30
Shoop, Jr., William M.
Electricity: motive power systems
Positional servo systems
Adaptive or optimizing systems including 'bang-bang' servos
318760, 318369, G05B 1106
Patent
active
053431316
ABSTRACT:
During the deceleration portion of a seek operation, the current level provided to the actuator motor of a disk drive is based on a desired linear deceleration versus time profile that has been temporally advanced by half of a servo data position sampling interval. At each position sampling interval, a new current level is determined and maintained for the interval between samples. The actual deceleration current follows a staircase curve centered on the desired profile so as to be self-synchronizing. The current level is also adjusted to compensate for the delay between obtaining a new servo data position sample and applying a new current level to the motor.
REFERENCES:
patent: 4031443 (1977-06-01), Droux et al.
patent: 4201936 (1980-05-01), Roumanis
patent: 4297734 (1981-10-01), Laishley et al.
patent: 4775903 (1988-10-01), Knowles
patent: 4924160 (1990-05-01), Tung
patent: 4931889 (1990-06-01), Osafune
patent: 4937689 (1990-06-01), Seaver et al.
patent: 4965501 (1990-10-01), Hashimoto
patent: 4980876 (1990-12-01), Abate et al.
patent: 4988933 (1991-01-01), Ogawa
patent: 5047910 (1991-09-01), Levran et al.
Fujitsu Limited
Shoop Jr. William M.
Sircus Brian
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