Control systems for extrusion or drawing plants
OwnerMohammad Hafiz Fazal Elahi Jamal-Ahmadinventor
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Abstract
A control system for an extrusion plant is produced with the aid of a mathematical model of the plant in question. Having established a mathematical model of the plant, a controller is designed and tested. The establishment of the model based controller enables the plant to be controlled in a more efficient manner by correcting for the effects of disturbances produced while the plant is operating before the effect of these disturbances manifest themselves in the product at the downstream end of the plant.
Claims10
A method of constructing a control system for a real extrusion or drawing plant comprising the steps of:
- a) creating a mathematical model of the plant by exciting the plant actuators and establishing the mathematical relationship between the plant inputs and outputs;
- b) creating a mathematical disturbance model to represent the differences between the real plant inputs and the model outputs;
- c) using the mathematical model and the disturbance model to create a mathematical model based controller;
- and
- d) using the mathematical model based controller to control the real extrusion or drawing plant.
A method of constructing a fault deletion system for an extrusion or drawing plant comprising the steps of:
- a) inducing a fault into the plant and detecting the effect on the plant output;
- b) creating a mathematical relationship between the fault and the output;
- and
- c) monitoring the plant to detect in the plant output a characteristic indicative of the mathematical relationship.
A method according to any preceding claim, wherein the plant comprises a filament drawing plant.
Dependencies are inferred from the claim text.