Controlling seeks using non-linear switching curves

Details Controlling seeks using non-linear switching curves Controlling seeks using non-linear switching curves

2007-02-21

2009-08-25

Nguyen, Hoa T (Department: 2627)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

C360S078070, C360S078140

Reexamination Certificate

active

07580219

ABSTRACT:
Controlling seeking of a transducer includes accelerating the transducer to a seek velocity, generating a linearized switching curve defining a position and velocity of the transducer at which deceleration should begin, and controlling the velocity of the transducer in response to the current position and seek velocity of the transducer relative to the linearized switching curve. The linearized switching curve has a slope and an offset that are determined in response to the seek velocity and a current position of the transducer relative to a nonlinear switching curve.

REFERENCES:
patent: 5254920 (1993-10-01), Agarwal et al.
patent: 5781365 (1998-07-01), Romano et al.
patent: 6510019 (2003-01-01), DeRosa
patent: 6515820 (2003-02-01), Burton et al.
patent: 6597529 (2003-07-01), DeRosa
patent: 7382570 (2008-06-01), Li et al.

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