Industrial process control apparatus and method
AssigneeWestinghouse Electric Corp.
InventorRichard E. Putman
Life of this patent
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Abstract
A control system and method are provided for an industrial process operation, wherein a controller is coupled with a process control member and has a gain that is adjustable in accordance with a predetermined relationship of the controller reference iteration interval and the controller actual execution interval.
Claims7
In a control apparatus for an industrial process having an operation control member, and with said control apparatus having a variable task load, the combination of;
- controller means coupled with the control member and having a predetermined algorithm with a reference controller iteration interval and with an established gain for determining the operation of said industrial process,
- means for establishing the actual controller execution interval in relation to said task load,
- means for establishing a ratio of the reference iteration interval and the actual execution interval, and
- means for changing said gain automatically in response to that ratio.
In a method of controlling an industrial process having an operation control member with controller apparatus having a gain and a task load, the steps of
- establishing a reference controller iteration interval,
- establishing the actual controller iteration interval in relation to said task load,
- establishing a predetermined relationship between said reference iteration interval and said actual iteration interval,
- changing the gain of the controller apparatus automatically in accordance with said relationship.
Dependencies are inferred from the claim text.