FUZZY DECOUPLING CONTROL OF MELTTEMPERATURE AND MELT PRESSURE FOR PLASTICELECTROMAGNETISM DYNAMIC EXTRUDER

摘要

The plastic electromagnetism dynamic extruder has gainedrnwide applications because of its novel structure and finernengineering performance. In the polymer processing, meltrntemperature and melt pressure control is crucial to the qualityrnof the extruded product. A new fuzzy decoupling controlrnalgorithm of melt temperature and melt pressure for the novelrnextruder is introduced in the transfer function matrix system,rnwhich is obtained through the experimental data with systemrnidentification. The control system is implemented onrnprogrammable computer controller. Experimental resultsrnshow melt temperature and melt pressure can be successfulrnindividually controlled by the heater power and the screwrnspeed. The good system performance verifies the controlrnstrategy's validity.