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US 12,687,830 B2Granted
Process control system, apparatus and method for control of a process plant
AssigneeSiemens Aktiengesellschaft
InventorsMaximilian Walter, Ulrich Taschke
Life of this patent
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Abstract
An apparatus and method for controlling a process plant in which a number of control processes are performed on common hardware, wherein encoded process variables are encoded in each of the control processes based on signatures that are defined individually in each of the control processes.
Claims12
An apparatus for control of a process plant, comprising:
- a control apparatus configured to implement a plurality of control processes on common hardware, each control process performing cyclic processing of at least one process value;
- wherein the plurality of control processes each compute a first signature for the at least one process value and for carrying out the processing of the at least one process value using the computed first signature,
- wherein the plurality of control processes each compute the first signature using a predetermined initial value and a cyclic increment;
- and
- wherein each of the plurality of control processes defines at least one of initial values and the cyclic increment of the respective control processes individually;
- wherein the process plant is operated, cyclic processing of the at least one process value is performed, and the computed first signature is utilized in each cycle for the at least one process value to ensure integrity of process values across a plurality of virtualized control processes.
3 more elements
A method for control of a process plant, comprising:
- implementing a plurality of control processes by a control apparatus on common hardware, each control process of the plurality of control processes implementing cyclic processing of at least one process value;
- computing a first signature and processing the at least one process value using the computed first signature in each cycle for the at least one process value, the first signature being computed by a control process using a predetermined initial value and a cyclic increment;
- and
- operating the process plant, performing the cyclic processing of the at least one process value and utilizing the computed first signature in each cycle for the at least one process value to ensure integrity of process values across a plurality of virtualized control processes;
- wherein at least one of predetermined initial values and the cyclic increment of a respective control process is defined individually for each control process of the plurality of processes.
2 more elements
Dependencies are inferred from the claim text.