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Adaptive pressure control for melt spinning processes

✍ Scribed by Yu-Jen Jang; Wen-Tend Wu; Chi-Chung Bai; Shang-Ren Liu; Yun-Yih Chuang

Publisher
Society for Plastic Engineers
Year
1991
Tongue
English
Weight
337 KB
Volume
31
Category
Article
ISSN
0032-3888

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✦ Synopsis

Abstract

Indirect adaptive control of the pressure of an extruder for melt spinning processes was investigated. The controller was a proportional‐integral‐derivative. (PID) one. An identified model for the pressure system was determined by using weighted least‐squares estimation with an adjustable Identification interval. On‐line tuning of the PID controller based on the identified model was then carried out. Difficulties in determining the proper model and controller tuning were avoided. The experiment, carried out with a pilot‐type melt spinning machine, resulted in higher quality fiber production.

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