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US 2006/0136075 A1Published application
Method and system for controlling a process in a plant
AssigneeTexaco Inc.
InventorsHongqiao Sun, W. Wheat, Vesna Mirkovic
Life of this patent
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Abstract
A method and system are disclosed for controlling a process by establishing a control factor for a proportional-integral-derivative (PID) controller used to control a parameter of a process relative to a setpoint. A feedback signal regarding the parameter of the process is received via a sensor of the process and a first feedback loop. Automatic adjusting of the control factor of the PID controller is based on the feedback signal.
Claims41
Method for controlling a process comprising:
- establishing a control factor for a proportional-integral-derivative (PID) controller used to control a parameter of a plant process relative to a setpoint;
- receiving a feedback signal regarding the parameter of the nrocess via a sensor of the process and a first feedback loop;
- and
- automatically adjusting the control factor of the PID controller based on the feedback signal.
1 more element
Apparatus for controlling a process comprising:
- means for receiving a setpoint for a parameter of the process;
- means for receiving a feedback signal regarding the parameter of the process via a sensor of the process and a first feedback loop;
- means for comparing the setpoint with the feedback signal to produce an error signal;
- means for processing the error signal in parallel PID paths;
- and
- means for automatically adjusting a control factor of at least one of the PID paths based on the feedback signal.
3 more elements
System for controlling a process comprising:
- a user interface for establishing a setpoint for a proportional-integral-derivative (PID) controller used to control a parameter of a process;
- a feedback loop for receiving a feedback signal regarding the parameter of the process via a sensor of the process;
- and
- a processor for automatically adjusting the control factor of the PID controller based on the feedback signal.
1 more element
Dependencies are inferred from the claim text.