Methods, apparatuses and systems for controlling a valve based on a combination of a characteristic curve for the valve and a proportional, integral and derivative signal valve
AssigneeTescom Corporation
InventorChristian Leonard
Life of this patent
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Abstract
A process device control may use a combination of a characteristic curve for the device and a proportional, integral and derivative signal value. The characteristic curve for the device may define operational characteristics of the process device. The proportional, integral and derivative signal value may be representative of process device operational deviations from the characteristic curve.
Claims20
A process plant system, the system comprising:
- a process device for controlling at least a portion of a process of a process plant;
- and
- a process device controller configured to:
- receive process device characteristic data;
- generate a process device control signal based on the process device characteristic curve data, wherein the process device characteristic curve data is representative of operational characteristics of the device;
- and
- to correct the process device control signal to compensate for deviations of operation of the process device from the operational characteristics of the device.
A process device controller, comprising:
- a process device characteristic curve data receiving module stored on a memory that, when executed by a processor, causes the processor to receive device characteristic curve data, wherein the device characteristic curve data is representative of operational characteristics of the process device;
- a control pressure data generation module stored on a memory that, when executed by a processor, causes the processor to generate control pressure data, wherein the process device operates in response to the control pressure data;
- and
- a control pressure correction module stored on a memory that, when executed by a processor, causes the processor to correct the control pressure data, wherein corrected control pressure data compensates for deviations of operation of the process device from the operational characteristics of the process device.
A non-transitory computer-readable medium storing computer-readable instructions that, when executed by a processor, cause the processor to control a process device, the non-transitory computer-readable medium comprising:
- a process device characteristic curve data receiving module that, when executed by a processor, causes the processor to receive device characteristic curve data, wherein the device characteristic curve data is representative of operational characteristics of the process device;
- a control pressure data generation module that, when executed by a processor, causes the processor to generate control pressure data, wherein the process device operates in response to the control pressure data;
- and
- a control pressure correction module that, when executed by a processor, causes the processor to correct the control pressure data, wherein corrected control pressure data compensates for deviations of operation of the process device from the operational characteristics of the process device.
Dependencies are inferred from the claim text.