Control device and control method
AssigneeMitsubishi Heavy Industries, Ltd.
InventorAkira Nishiyama
Life of this patent
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Abstract
The control device includes a processor that repeatedly executes a calculation process for controlling an apparatus based on circuit information read from a circuit information memory, a data memory that sequentially stores calculation results of the calculation process, and a diagnosis unit that executes a diagnosis process for diagnosing presence or absence of a bit error in the circuit information stored in the circuit information memory. In a case where the bit error is diagnosed by the diagnosis unit, the processor outputs, as the calculation result, recent past data corresponding to a case where no bit error is diagnosed by the diagnosis unit, among the calculation results stored in the data memory, or alternative data prepared in advance to correspond to the past data.
Claims9
A control device comprising:
- a circuit information memory that stores circuit information;
- a processor that repeatedly executes a calculation process for controlling an apparatus based on the circuit information read from the circuit information memory;
- a data memory that sequentially stores calculation results of the calculation process;
- and
- a diagnosis unit that executes a diagnosis process for diagnosing presence or absence of a bit error in the circuit information stored in the circuit information memory, wherein
- the processor is configured to output, as the calculation result, recent past data corresponding to a case where no bit error is diagnosed by the diagnosis unit, among the calculation results stored in the data memory, or
- alternative data prepared in advance to correspond to the past data, in a case where the bit error is diagnosed by the diagnosis unit.
A control method using a control device including
- a circuit information memory that stores circuit information,
- a processor that repeatedly executes a calculation process for controlling an apparatus based on the circuit information read from the circuit information memory,
- a data memory that sequentially stores calculation results of the calculation process, and
- a diagnosis unit that executes a diagnosis process for diagnosing presence or absence of a bit error in the circuit information stored in the circuit information memory, the method comprising:
- outputting, as the calculation result of the processor, recent past data corresponding to a case where no bit error is diagnosed by the diagnosis unit, among the calculation results stored in the data memory, or
- alternative data prepared in advance to correspond to the past data, in a case where the bit error is diagnosed by the diagnosis unit.
Dependencies are inferred from the claim text.