Title:
DOUBLE COMPUTER SYSTEM
Document Type and Number:
Japanese Patent JPS5816364
Kind Code:
A
Abstract:
PURPOSE:To realize an accurate and smooth switch among upper computers of a hierarchy system, by having an agreement between the proportion integral initial state of a follower upper computer and that of a main upper computer. CONSTITUTION:An upper computer 12 or 11 of a follower system (queuing system) receives the same signal as an upper computer 11 or 12 of a main system and executes the same operation. At the same time, an agreement is obtained between the computers 11 and 12 with each sampling cycle of the proportion integrators 19 and 20, and the control commands 21 and 22 are switched with no bump. Then the mutual diagnosis of fault is carried out between the computers 11 and 12 with high accuracy.
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Inventors:
TOOYAMA EIJI
SUGANO AKIRA
SUGANO AKIRA
Application Number:
JP11346781A
Publication Date:
January 31, 1983
Filing Date:
July 22, 1981
Export Citation:
Assignee:
HITACHI LTD
International Classes:
G06F11/16; G06F11/20; G06F15/16; (IPC1-7): G06F11/16; G06F15/16
Attorney, Agent or Firm:
Akio Takahashi