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- Title
The concurrent implementation of high velocity control performance and high energy efficiency for hydraulic injection moulding machines.
- Authors
Chiang, M. H.; Lee, L. W.; Tsai, J. J.
- Abstract
A high servo control response and a high energy efficiency, which are difficult to achieve simultaneously, are requested in hydraulic servo systems of current hydraulic injection moulding machines. This investigation develops new solutions to concurrently implement energy-saving control and velocity control for simultaneously realising high velocity control response and high energy efficiency for injection moulding machines. Two different hydraulic pump systems, including a variable displacement pump and a variable rotational speed pump, are developed and in each one of them two different energy-saving control concepts, such as load-sensing control and constant supply pressure control, are implemented. Thus, for verifying the feasibility of the integrated control systems and comparing the energy-saving effects, velocity control of the hydraulic cylinder can be integrated with four different energy-saving control systems (ESCSs) and also the conventional hydraulic system without energy-saving control. A fuzzy sliding mode control that can simplify the complex fuzzy rule bases is used for solving the complex two-input two-output systems. The experimental results show the excellent performance of the integrated concurrent control systems.
- Subjects
HYDRAULIC engineering; ENERGY consumption; HYDRAULIC cylinders; AUTOMATIC control systems; ENGINEERING; FLUID mechanics
- Publication
International Journal of Advanced Manufacturing Technology, 2004, Vol 23, Issue 3/4, p256
- ISSN
0268-3768
- Publication type
Article
- DOI
10.1007/s00170-003-1652-8