Document Type and Number:
Japanese Patent JPS6259801
Kind Code:
B2
Abstract:
Manipulation-variable separated type control method and apparatus are used in a control system with a control element and a feedback element for an object being controlled or controlled object. The apparatus comprises a detector for detecting a relative value of a controlled variable, a first adder for applying a difference between a relative value output of the relative value detector and a relative reference value, and a second adder totalizing an output of the control element and an absolute reference value, for generating a signal representative of a manipulation variable for the controlled object. The absolute reference value for the manipulation variable is set to a nominal reference value for the controlled object in normal operation and applied to the controlled object irrespective of disturbances of the system. The relative reference value for the controlled variable is normally variable within an allowable change range of the controlled variable and is set such that the change of the manipulation variable determined by a deviation from the detected relative value is minimized for the absolute reference value.
Inventors:
SATO TAKAO
Application Number:
JP5035179A
Publication Date:
December 12, 1987
Filing Date:
April 25, 1979
Export Citation:
Assignee:
HITACHI LTD
International Classes:
G05B11/36; G05B5/01; G05B9/02; G05D9/12; G05F1/56
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