By D. E. Hardt
Read or Download Information Control Problems in Manufacturing Technology 1982. Proceedings of the 4th IFAC/IFIP Symposium, Maryland, USA, 26–28 October 1982 PDF
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Extra resources for Information Control Problems in Manufacturing Technology 1982. Proceedings of the 4th IFAC/IFIP Symposium, Maryland, USA, 26–28 October 1982
B-, c. and d-j . Successive investigations revealed that a third order model adequately represents the relationship between the combustion air flow rate and the glass temperature. The identified model has the form 2 0. ύ " >- Λ — x υΩ· *i or. 0. 477z~ 3 \ CJ o & 0) -P A model of this form would be very useful, since the glass temperature variations could be detected at the inlet to zone 1 and subsequently used to carry out feed forward control by altering the combustion air flow rate. VCt-9) Equation 2 can be rearranged to provide future forecasts of the glass temperature at location 15, as it would be in an on-line control system.
This paper lists the fundamental requirements and aspects of such automated equipment and explains them by example. The resulting functions can be implemented on standard microcomputer systems by minimum operating systems. One main point of view is the trouble-free interfacing to differ ent measurement aids, another the problem- and not machineoriented programming of the test task. These are major aspects to achieve a maximum acceptance by the test personal which in turn will increase the affect of rationalization when using these systems.
Automatic detection can be perfor med by monitoring residuals. As the time re quired for prediction by a minicomputer inc reases with the order n of the AR model, the time for prediction becomes less than the sampling time. Therefore, having a threshold level deter mined suitably, automatic recognition for tool breakage can be performed precisely. As the results of many experiments it is under stood that the high sensitivity for detection of tool breaking was given very easily. C. MOTOR GEAR / m—a- 3€& \ , MAIN ISO AMP RMS [AMP SHAFT COMPUTER B \ CUTTING DYNAMOMETER Fig.