Concept of a control system based on 3D geometry measurement for open die forging of large-scale components

2020 ◽  
Author(s):  
Lorenz Quentin ◽  
Rüdiger Beermann ◽  
Kai Brunotte ◽  
Bernd-Arno Behrens ◽  
Markus Kästner ◽  
...  
Keyword(s):  
Control System ◽  
Large Scale ◽  
Die Forging ◽  
3D Geometry ◽  
Geometry Measurement ◽  
Open Die Forging

Giant Die Forging Press Machine Main Circuit Electromechanical Hydraulic Servo Control System Modeling and Simulation

2011 ◽  
Vol 317-319 ◽  
pp. 655-660 ◽  
Author(s):  
Ji Dong Yang ◽  
Xin Chen
Keyword(s):  
Control System ◽  
Large Scale ◽  
System Modeling ◽  
Hydraulic Cylinder ◽  
Slide Valve ◽  
Ultrahigh Pressure ◽  
Pressing Pressure ◽  
Loop Control ◽  
Die Forging ◽  
Forging Press

This paper research on an electromechanical hydraulic mixture control system used in large scale die-forging press, based on the national major science and technology project (2009ZX04005-011). This mixture control system used in press machine accomplishes pressing, pressure-keeping, return. The control system uses hydraulic oil to control three-position five-path slide valve as hydraulic system main valve, for drive system of giant die forging press is characteristic of ultrahigh pressure and large flow, high power. This control system consists of two parts: firstly, establishing electromechanical hydraulic mixture control model by adding electronics and feedback section to servo slide system. Secondly, combining existing slide control hydraulic cylinder model and server slide system form main circuit closed-loop control system. The last but not least, Computer simulation was conducted by matlab got the ideal control curve.

scholarly journals FAST AND COST EFFICIENT MEASURING OF GEOMETRY AND TEMPERATURE FOR OPEN-DIE FORGING

2019 ◽  
Vol 19 (3) ◽  
pp. 83-94
Author(s):  
Mirko RIEDEL ◽  
Torben WIESE ◽  
Arvid HELLMICH ◽  
Steffen IHLENFELDT
Keyword(s):  
Force Measurements ◽  
Beam Path ◽  
Simulation Tools ◽  
Die Forging ◽  
Parallel Measurement ◽  
Characteristic Features ◽  
Cost Efficient ◽  
Geometry Measurement ◽  
Open Die Forging ◽  
Forging Press

In open-die forging it is state of the art to use simulation tools for creating forging plans and setpoint values for the forging press and the automated part manipulator. These forging plans define required positions and forces. Therefore, the process can be fully automated. However, even small variations of not considered influence parameters lead to different forging results and thus to a discontinuous process. Influencing factors are, e.g. material parameter deviations, uncertainties in force measurements or variations in the part temperature due to varying environmental conditions. This paper presents an approach for a fully automatic open-die forging process with respect to actual conditions, based on a parallel measurement of the workpiece geometry and temperature and a “process-real-time” adaptation on the controller system. The focus of this work is the development of a measuring strategy and an according sensor setup for the combined temperature and geometry measurement of the workpiece. In addition, the structure, the characteristic features of the components and the beam path of the sensors scanning units are shown. Furthermore, first experimental results for the alignment of the beam path are presented. In the outline, the setup and calibration strategy of the measurement system are stated.

Intelligent Lighting Control System in Large-Scale Sports Competition Venues

2018 ◽  
pp. 172-182 ◽  
Author(s):  
Shengmin CAO
Keyword(s):  
Control System ◽  
Large Scale ◽  
Comprehensive Evaluation ◽  
Evaluation Model ◽  
Fuzzy Comprehensive Evaluation ◽  
Practical Significance ◽  
Lighting Control ◽  
Sports Events ◽  
Planning And Design ◽  
Comprehensive Evaluation Model

This paper mainly studies the application of intelligent lighting control system in different sports events in large sports competition venues. We take the Xiantao Stadium, a large­scale sports competition venue in Zaozhuang City, Shandong Province as an example, to study its intelligent lighting control system. In this paper, the PID (proportion – integral – derivative) incremental control model and the Karatsuba multiplication model are used, and the intelligent lighting control system is designed and implemented by multi­level fuzzy comprehensive evaluation model. Finally, the paper evaluates the actual effect of the intelligent lighting control system. The research shows that the intelligent lighting control system designed in this paper can accurately control the lighting of different sports in large stadiums. The research in this paper has important practical significance for the planning and design of large­scale sports competition venues.

Capture Strategy Based on a Distributed Control System for a Large-scale Space End-Effector

ROBOT ◽  
2011 ◽  
Vol 33 (4) ◽  
pp. 434-439 ◽  
Author(s):  
Dangyang JIE ◽  
Fenglei NI ◽  
Yisong TAN ◽  
Hong LIU ◽  
Hegao CAI
Keyword(s):  
Control System ◽  
Distributed Control ◽  
Large Scale ◽  
Scale Space ◽  
Distributed Control System ◽  
End Effector
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