Title:
ACCESS COMMAND ESTIMATION/CORRECTION METHOD, ACCESS CONTROLLER AND DATA TRANSDUCER ACCESS CONTROLLER
Document Type and Number:
Japanese Patent JPH04116707
Kind Code:
A
Abstract:
PURPOSE:To easily and precisely estimate and correct an access command considering the influence of an actuator temperature in a short time by obtaining the acceleration command time of the access command fitted to a target shift distance with the actuator temperature and a target shift distance as variables. CONSTITUTION:A system consists of a logic circuit part 1, a driving circuit 6, an actuator 7, a position encoder 8, a position detection circuit 9, a speed detection circuit 10 and a temperature detection means 11. The actuator 7 is previously accessed as to the target shift distance on trial and the most fitted access command is estimated based on the access with the temperature of the actuator 7 and the target shift distance as the variables. Thus, the access command can easily and precisely be estimated and corrected in a short time by considering the influence of the rise of the temperature in the electromagnetic coil of the actuator 7.
Inventors:
YOSHIDA SHUICHI
TOKURA MITSUO
WAKABAYASHI NORIAKI
TOKURA MITSUO
WAKABAYASHI NORIAKI
Application Number:
JP23839890A
Publication Date:
April 17, 1992
Filing Date:
September 06, 1990
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD
International Classes:
G11B21/08; G05D3/12; (IPC1-7): G05D3/12; G11B21/08
Attorney, Agent or Firm:
Akira Kobiji (2 outside)