Multiplexed digital control device
AssigneeKabushiki Kaisha Toshiba
InventorAkihiko Kuroiwa
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Abstract
A multiplexed digital control device includes a plurality of control circuits and a main signal selection circuit for selecting and outputting a specific signal among the outputted manipulated variables of the plurality of the control circuits according to a predetermined logic. Each control circuit has sub-signal selection means for comparing an internal data of the control circuit obtained as a result of control operation thereof for an identical input signal of the device with internal data of other control circuits obtained as a result of control operations thereof and selecting a specific data among them, according to a predetermined logic. The specific data selected by the sub-signal selection means is outputted as a manipulated variable of its own control system.
Claims10
A multiplexed digital control device, comprising:
- a plurality of control systems each of which outputs a manipulated variable necessary to make a controlled variable from a common controlled system coincident with a common command;
- and
- main signal selection means for selecting a specific signal among said manipulated variables output from said plurality of control systems, according to a predetermined logic, wherein each of said plurality of control systems, comprises:
- a first memory for storing an internal data obtained as a result of a control operation;
- transmitting means for directly transmitting said internal data with an address information to the other control systems;
- receiving means for receiving said internal data of said other control systems transmitted thereto;
- second memories for storing said internal data transmitted from said other control systems and received by said receiving means at the addresses designated by the address information transmitted;
- sub-signal selection means for reading out said internal data, from said first and second memories, and selecting a specific data from said data readout, according to said predetermined logic, and determining said manipulated variable of one of said control systems on the basis of the selected specific data;
- and
- output means for outputting said manipulated variable determined by said sub-signal selection means to said main signal selection means.
A multiplexed digital control device, comprising:
- a plurality of control systems each of which outputs a manipulated variable necessary to make a controlled variable from a common controlled system coincident with a common command;
- and
- main signal selection means for selecting a specific signal among said manipulated variables output from said plurality of control systems, according to a predetermined logic, in accordance with a median preceding manipulated variable, a median current speed command, and a median current speed feedback signal, wherein each of said plurality of control systems, comprises:
- a first memory for storing an internal data obtained as a result of a control operation;
- transmitting means for transmitting said internal data with an address information to the other control systems;
- receiving means for receiving said internal data of said other control systems transmitted thereto;
- second memories for storing said internal data transmitted from said other control systems and received by said receiving means at the addresses designated by the address information transmitted;
- sub-signal selection means for reading out said internal data, from said first and second memories, and selecting a specific data from said data readout, according to said predetermined logic, and determining said manipulated variable of one of said control systems on the basis of the selected specific data;
- and
- output means for outputting said manipulated variable determined by said sub-signal selection means to said main signal selection means.
Dependencies are inferred from the claim text.