The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 30, 1992
Filed:
Apr. 02, 1990
Tomihisa Ogawa, Oome, JP;
Osami Tsukamoto, Mitaka, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
In a servo type magnetic head drive control device, a moving velocity of a magnetic head is controlled on the basis of an error between an actual moving velocity value of the magnetic head generated using servo data and a target velocity value set in accordance with a moving distance to a target position. When the magnetic head is moved to a predetermined position, transient control is performing by using finite time settling control on the basis of position information and velocity information of the magnetic head, and normal tracking control or tracking control using the finite time settling control is performed to form positioning control of the magnetic head. Also a difference between the head position and the position of the head generated from a model is determined and used to control head movement.