Methods and apparatus for process control using catalyst...

Data processing: generic control systems or specific application – Generic control system – apparatus or process – Optimization or adaptive control

Reexamination Certificate

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C700S029000, C700S044000, C700S052000, C700S266000

Reexamination Certificate

active

07460915

ABSTRACT:
In a process control system, the hidden properties of a catalyst are estimated by including those properties in hidden states within a state space model and solving the state space model based on measurable inputs and outputs of the process. The process may include defining a state space model for a process having a catalyst state comprising a hidden catalyst property; defining a set of empirically measurable input variables for the state space model, defining a set of output variables for the state space model, measuring a set of input values corresponding to the set of input variables; measuring a set of output values corresponding to the set of output variables; and estimating the hidden catalyst property based on the input values, the output values, and the state space model.

REFERENCES:
patent: 5841678 (1998-11-01), Hasenberg et al.
patent: 2005/0133419 (2005-06-01), Long et al.
patent: 2005/0267669 (2005-12-01), Wang et al.
patent: 2006/0073013 (2006-04-01), Emigholz et al.

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