Research on Holonic Control Structure and System Layout for Re-Configurable Manufacturing System (RCMS)

2011 ◽  
Vol 474-476 ◽  
pp. 490-497
Author(s):  
Xi Qin Wen ◽  
Xi Jie Ding ◽  
Zhong Min Zhao ◽  
Zhi Yu Xie
Keyword(s):  
Manufacturing System ◽  
Control Structure ◽  
Design Method ◽  
Hierarchical Control ◽  
Centralized Control ◽  
Market Demand ◽  
Key Technology ◽  
Implementation Method ◽  
Function Module ◽  
System Layout

In order to make reconstruction of re-configurable manufacturing system (RCMS) more efficient and fast, a new design method for control structure and system layout is put forward. First, a holon control structure, such as centralized-control, hierarchical control, non-strictly hierarchical control, and distributed control, is introduced. Each function module of the control structure not only has relative independent character and also cooperation with other control structure. It may constitute the required structural according to the market demand at any time to realize re-configurable control goals. At last, the key technology and the implementation method involved in layout design of equipment and system layer are discussed.

Research on NX-Based Progressive Die Design

2012 ◽  
Vol 602-604 ◽  
pp. 1818-1821
Author(s):  
Jun Liu ◽  
Cong Dong Ji
Keyword(s):  
Design Method ◽  
Equivalent Stress ◽  
Equivalent Strain ◽  
Die Design ◽  
Support Design ◽  
Stress Resilience ◽  
Progressive Die ◽  
Key Technology ◽  
Product Manufacturing ◽  
Progressive Die Design

Progressive die has been widely used in product manufacturing field. This paper proposed a NX-based computer server support design method. The equivalent stress, resilience, equivalent strain, attenuation, and forming were analyzed in detail. The key technology of confirming blank dimension and stock layout of server support were explicated clearly.

Dynamic systems with hierarchical control structure

Cybernetics ◽  
1979 ◽  
Vol 14 (3) ◽  
pp. 427-430 ◽  
Author(s):  
V. A. Gorelik
Keyword(s):  
Dynamic Systems ◽  
Control Structure ◽  
Hierarchical Control

Key Technology and Architecture of Reconfigurable Manufacturing System

2014 ◽  
Vol 556-562 ◽  
pp. 6034-6037
Author(s):  
Dong Man Yu ◽  
Zhi Hua Gao ◽  
Xiao Jing Li ◽  
Di Wang
Keyword(s):  
Manufacturing Systems ◽  
Manufacturing System ◽  
Reconfigurable Manufacturing Systems ◽  
Reconfigurable Manufacturing ◽  
Sustainable Change ◽  
Reconfigurable Manufacturing System ◽  
Key Technology ◽  
Common Space ◽  
Design And Manufacture

Reconfigurable manufacturing system is essential for sustainable change, rapid response ability important characteristics, research, development and application of manufacturing system. The main architecture and major characteristics of reconfigurable manufacturing systems is explored. Normally, the quality of RMS can be evaluated by several factors. Firstly, the gross cost of production and reconstruction should be less. Secondly, The time of design and manufacture (ascent time) should be shorter. Thirdly, the utilization ratio of existed resource should reach to the utmost. Finally, the cargo stream planning in common space should keep in optimal condition. At last, The author give an example to shown the RMS, the hydraulic integrated package for a gearshift device in automobile, are mentioned to compare and analyze.

Research on the Facilities Layout Planning in MTO Manufacturing Industry Based on Genetic Algorithm

2013 ◽  
Vol 842 ◽  
pp. 695-702
Author(s):  
Ying Wang ◽  
You Rong Li ◽  
Yu Qiong Zhou
Keyword(s):  
Genetic Algorithm ◽  
Manufacturing Industry ◽  
Design Method ◽  
Facility Layout ◽  
Optimization Method ◽  
Market Demand ◽  
Layout Planning ◽  
Manufacturing Enterprises ◽  
Make To Order ◽  
Systematic Layout Planning

To enlarge production to meet the market demand, its nessasery to improve the present facility layout for MTO (Make-To-Order) manufacturing enterprises. This paper tries to design a optimization method based on genetic algorithm for the facility layout of MTO enterprises. Firstly, SLP (systematic layout planning) was applied to analyze the material and non-material flow interrelation of the workshop. Secondly, a relatively optimum layout was determined after using fuzzy hierarchy estimation to evaluate the schemes. Then the scheme was optimized with genetic algorithm. The result shows that the optimized logistics transport load is obviously less than before. This design method based on genetic algorithm (GA) is proved feasible and effective in the optimization of facility layout.

scholarly journals A novel distributed event-triggered control for reactive power sharing based on hierarchical structure in islanded microgrid

2020 ◽  
pp. 002029402092475
Author(s):  
Yingwen Long ◽  
Yanxiang Zhu ◽  
Wei Zhang
Keyword(s):  
Hierarchical Structure ◽  
Reactive Power ◽  
Hierarchical Control ◽  
Power Sharing ◽  
Control Algorithms ◽  
Centralized Control ◽  
Nonlinear Loads ◽  
Distributed Generator ◽  
Islanded Microgrid ◽  
Event Triggered

Due to line impedance mismatches, nonlinear loads and other reasons, the traditional droop control algorithms have great limitations on the control of reactive power sharing. Distributed control algorithms based on hierarchical structure have become an effective approach for reactive power sharing compared with traditional centralized control methods. In this paper, an event-triggered control algorithm based on stability analysis of Lyapunov method is put forward in order to satisfy the demand of low-bandwidth communication for distributed generator in islanded microgrid. Subsequently, a distributed hierarchical control scheme adopting proposed event-triggered strategy is designed to achieve proportional reactive power sharing in an islanded microgrid. Finally, the feasibility and validity of the proposed algorithm are further verified in MATLAB/Simulink environment.

scholarly journals A framework to model the STPA hierarchical control structure of an autonomous ship

2020 ◽  
Vol 132 ◽  
pp. 104939 ◽  
Author(s):  
Meriam Chaal ◽  
Osiris A. Valdez Banda ◽  
Jon Arne Glomsrud ◽  
Sunil Basnet ◽  
Spyros Hirdaris ◽  
...  
Keyword(s):  
Control Structure ◽  
Hierarchical Control ◽  
Autonomous Ship

A Variant Design Method of Assembly Based on Tree Structure

2011 ◽  
Vol 421 ◽  
pp. 263-266
Author(s):  
Hai Xin Zhao ◽  
Fu Yun Liu ◽  
Ying Sun ◽  
Kun Xu
Keyword(s):  
Design Method ◽  
Sorting Algorithm ◽  
Market Demand ◽  
Variant Design ◽  
Product Variant ◽  
Joint Coupling ◽  
Key Technologies ◽  
Transfer Method ◽  
Dimension Parameter ◽  
Product Dimension

In the current market demand of rapid response manufacturing, the product variant design technology is one of the key technologies. Product variant design principles and methods are first described. Then, product dimension parameter is analyzed and product dimension parameter transferring structure is studied. Applying tree theory to product variant design, a dimension relation driving-tree of components and parts is constructed and the significance of driving-tree statistics and a dimension parameters transfer method are presented. The methods and processes which are applied to variant design and the sorting algorithm of relations are described in detail. A parameterized variant design module integrated with SolidWorks was developed with VC + +. All the above mentioned methods and processes are verified by taking a joint coupling product as an example.

Hierarchical Control of Multi-Domain Power Flow in Mobile Systems: Part II — Aircraft Application

2015 ◽  
Author(s):  
Matthew A. Williams ◽  
Justin P. Koeln ◽  
Andrew G. Alleyne
Keyword(s):  
Power Systems ◽  
Power Flow ◽  
Large Scale ◽  
Control Method ◽  
Hierarchical Control ◽  
Mobile Systems ◽  
Centralized Control ◽  
Modeling Framework ◽  
Control Framework ◽  
Aircraft Application

This two-part paper presents the development of a hierarchical control framework for the control of power flow throughout large-scale systems. Part II presents the application of the graph-based modeling framework and three-level hierarchical control framework to the power systems of an aircraft. The simplified aircraft system includes an engine, electrical, and thermal systems. A graph based approach is used to model the system dynamics, where vertices represent capacitive elements such as fuel tanks, heat exchangers, and batteries with states corresponding to the temperature and state of charge. Edges represent power flows in the form of electricity and heat, which can be actuated using control inputs. The aircraft graph is then partitioned spatially into systems and subsystems, and temporally into fast, medium, and slow dynamics. These partitioned graphs are used to develop models for each of the three levels of the hierarchy. Simulation results show the benefits of hierarchical control compared to a centralized control method.

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