Batch mixing method with standard deviation homogeneity monitoring
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Accused Products
Abstract
There is disclosed a system and method of formulating a batch comprising at least two chemicals. An embodiment is disclosed wherein a feedforward algorithm can be used to control the target blend. Subsequently a feedback closed loop control loop algorithm is provided for a multivariant blend. Use of this approach allows for a continuously autoreplenished and controlled blend. Also disclosed is the ability to control via feedforward and feedback algorithms a fast responding control mode that allows for the elimination of a container. This approach will allow for “one pass” blending with control. The controller implements an automated fault detection and correction system, thereby identifying necessary maintenance prior to failure. If failure does occur the signature recognition allows rapid analysis and correction thus maximizing tool availability.
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Citations
61 Claims
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1-36. -36. (canceled)
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37. A method of formulating a composition comprising two or more chemicals, comprising:
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dispensing at least two chemicals into a container until the container is filled to a predetermine volume;
determining the homogeneity of the composition while the container is being filled and/or after the container is filled to the predetermined volume, wherein the homogeneity is determined as a function of an average deviation of the quantity of one or more chemicals of the composition with respect to an average quantity of the chemicals of the composition over a predetermined time period;
determining the quantity of one or more of the chemicals in the container after the homogeneity of the mixture is at least at a predetermined homogeneity value. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60)
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61-84. -84. (canceled)
Specification