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US 2020/0159180 A1Published application
Controller
AssigneeHitachi, Ltd.
InventorsTasuku ISHIGOOKA, Yuki HORITA
Life of this patent
Estimating the term…
Abstract
Fail operational that can guarantee stability of control while suppressing cost increase is difficult. A control controller according to the present invention stores information necessary for recovery in a normal travel mode in time series in a backup, and thus control software can be recovered from the backup in real time if a failure occurs in the system.
Claims8
A controller comprising:
- a control backup data extraction unit that extracts a state value and a control plan value calculated by one control program;
- a control backup data storage unit that stores the state value, the control plan value, and an input value which another control program refers to in time series as a backup;
- and
- a control program fast start unit that inputs the state value and the input value to the other control program in an order of the time series after a failure of the one control program is detected, and maintains a control function in a state in which control output is possible.
1 more element
Dependencies are inferred from the claim text.