Control system for sheetmaking
June 9, 2009. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3610899 Process control Automatic identification system for self tuning process controller Self tuning of P-I-D controller by conversion of discrete time model identification parameters Adaptive self-correcting control system Selective parametric self-calibrating control system Pattern-recognizing self-tuning controller System and process for identifying and updating tuning constants Process for controlling a parameter based upon filtered data Electronic compensation network InventorsAssigneeApplicationNo. 332256 filed on 03/31/1989US Classes:700/127, Sheet making (e.g., paper product)700/37, Gain (e.g., tuning)700/72Lag (e.g., deadtime)ExaminersPrimary: Smith, JerryAssistant: Trammell, Jim Attorney, Agent or FirmInternational ClassesG06F 015/46G05B 013/04 G05B 013/02 G05B 011/01 AbstractA time delay compensation control system for use in controlling a sheetmaking process includes a controller operated according to the Smith Predictor control scheme and means to automatically adjust the closed-loop time constant of the controller in inverse relationship to the system error or to the signal-to-noise ratio of the system output signals.Other References
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