Abstract
Reducing energy consumption is becoming a more and more essential consideration for low carbon manufacturing. In this paper, an operation scheduling approach is proposed for a multi-hydraulic press system to explore the potential on energy saving at system level. In the multi-hydraulic press system, a drive is composed of several motor-pumps and supplies energy to each press according to a given schedule. The scheduling formulation is developed based on power models of the forming process on an individual press. At single press level, models of energy conversion units, including asynchronous motors, piston pumps, hydraulic cylinders, valves and pipes are built by identifying their energy dissipation characteristics. Based on the established model of a single press and scheduling formulation, the energy consumption model and makespan at multi-press level are obtained. In order to balance makespan and energy consumption, the duration of each operation is adjusted by optimizing the configuration of the drive and the schedule of operations. To demonstrate the applicability of the proposed approach, a case study on a four presses system is presented. The results show that this approach is effective in identifying schedules to reduce makespan and total energy consumption during forming processes.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.