Skip to Main Content
Computer Modeling for Injection Molding: Simulation, Optimization, and Control
book

Computer Modeling for Injection Molding: Simulation, Optimization, and Control

by Huamin Zhou
March 2013
Intermediate to advanced content levelIntermediate to advanced
416 pages
21h 34m
English
Wiley
Content preview from Computer Modeling for Injection Molding: Simulation, Optimization, and Control

Chapter 15: Direct Quality Control

Yi Yang

Department of Control Science and Engineering, Zhejiang University, Hangzhou, Zhejiang, China

Furong Gao

Department of Chemical and Biomolecular Engineering, Hong Kong University of Science and Technology, Kowloon, Hong Kong, China

Part III of this book shows that different methodologies have been attempted to optimize the molded part quality, most of which used the process conditions as the set point parameters. However, even with a constant set point, the quality output could vary because of disturbances. Therefore, it is necessary to adopt the trajectories of the processing variables and/or quality variables as the inputs for process control. By now, relatively fewer attentions have been paid to the direct control of the final molded part qualities, probably due to the lack of an accurate quantitative description of the complex relation between the quality characteristics and the process conditions. At present, there do exist some imprecise qualitative relationships. Without the quantitative relations, an online control system of the injection molding product quality, as shown in Figure 15.1, is difficult to implement.

Figure 15.1 Block diagram of the desired online quality controller.

c15f001

The complex thermal and rheological properties of the plastic material are the first difficulty in analyzing this relationship. The non-Newtonian flow ...

Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Start your free trial

You might also like

Dynamics and Control of Robotic Manipulators with Contact and Friction

Dynamics and Control of Robotic Manipulators with Contact and Friction

Shiping Liu, Gang S. Chen
Molded Optics

Molded Optics

Michael Schaub, Jim Schwiegerling, Eric Fest, R. Hamilton Shepard, Alan Symmons
Computer Aided Design

Computer Aided Design

Jayanta Sarkar
Mobile Intelligent Autonomous Systems

Mobile Intelligent Autonomous Systems

Jitendra R. Raol, Ajith K. Gopal

Publisher Resources

ISBN: 9781118444917Purchase book