| 摘要 |
<p>A control method is disclosed for defining data for setting the times for controlled events in a glass machine 10 (for example a bottle-forming machine) which is controlled by a programmable sequencer which defines the time of a machine cycle. The machine 10 includes a plurality of mechanisms 12, 22, 26, 31, 34, 38 displaceable between advanced and retracted positions under the control of valves V, VI-V6, the displacement of at least one of the mechanisms being divided up into at least two sub motions. The thermal forming of the parison and bottle involves a predetermined number of thermal forming processes having finite durations. The control includes a computerized model or simulation of a mathematical representation of a 'network constraint diagram' of a forming process and a computer for analysing the computerized model as a 'constrained optimization problem' for determining, the fastest machine cycle time for a feasible schedule and the event time in the forming process for each displacement to begin and for each valve to be turned "on" and "off'.</p> |
