Method and apparatus for producing isotropic foamed stock
Abstract
Abstract AN IMPROVED ONE-SHOT SYSTEM AND PROCESS FOR PRODUCING POLYURETHANE FOAM STOCK AND THE LIKE, INCLUDING MEASUREMENT CIRCUITS FOR DERIVING DIGITAL MEASUREMENTS OF PARAMETERS SUCH AS THE MASS TRANSFER RATES OF THE VARIOUS CONSITITUENTS, AND FURTHER INCLUDING AN AUTOMATIC CONTROLLER SYSTEM RESPONSIVE TO SUCH MEASUREMENTS FOR ADJUSTING AND CONTROLLING THE PARAMETERS WITH RESPECT TO PRESELECTED VALUES. A CONTROLLER SYSTEM IS PROVIDED FOR CONTINUOUSLY SAMPLING THE VARIOUS INCOMING MEASUREMENT SIGNALS SEQUENTIALLY, AND FOR DERIVING ERROR SIGNALS FROM A COMPARISON OF VARIOUS FUNCTIONAL RELATIONSHIPS OF THE SAMPLES RELATIVE TO PRE-ESTABLISHED OPTIMUMS. CONTROL CIRCUITS ARE ALSO INCLUDED FOR CONTINUALLY ADJUSTING THE OPERATION OF THE SYSTEM IN RESPONSE TO THE ERROR SIGNALS.
Inventors
- 👤 Lawrence C Porter
- 👤 Kenneth E Graves
Bibliographic Details
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