scholarly journals A Web Tension Control Strategy for Multi-span Web Transport Systems in Annealing Furnace

2010 ◽  
Vol 50 (6) ◽  
pp. 854-863 ◽  
Author(s):  
Gyoo Taek Lee ◽  
Jong Min Shin ◽  
Han Me Kim ◽  
Jong Shik Kim
Keyword(s):  
Control Strategy ◽  
Tension Control ◽  
Transport Systems ◽  
Annealing Furnace ◽  
Web Tension

Advanced Motion Control Design for Longitudinal Web Dynamics in Roll-to-Roll Systems: Velocity or Position Control?

2013 ◽  
Author(s):  
Y. Martz ◽  
J. Frechard ◽  
D. Knittel
Keyword(s):  
Control Strategy ◽  
Position Control ◽  
Tension Control ◽  
Web Handling ◽  
Reference Tracking ◽  
External Loop ◽  
Roll To Roll ◽  
Processing Line ◽  
The Web ◽  
Web Tension

Roll-to-Roll systems handling web material such as papers, polymers, textiles or metals are very common in the industry. One of the main objectives in web handling plant is to reach an expected web speed while maintaining the web tension within an acceptable range around the tension reference in the entire processing line. In the recent years, several works have focused on the topic of web tension control using H∞ approaches. In the traditional way, each motor driven roller is controlled in speed and the web tension control is ensured by an external loop. This paper proposes to compare, for the first time, the traditional control strategy with a control strategy including position control rather than speed control. In fact, position control is commonly used in printing industry. The comparison will be ensured in frequency and time domain and take into account the reference tracking performances and the robustness to web elasticity variations.

Dynamic and Control Strategy of Payload Motion for Deployment System

2012 ◽  
Vol 229-231 ◽  
pp. 2361-2364 ◽  
Author(s):  
Zi Fan Fang ◽  
Bing Fei Xiang ◽  
Qing Song He ◽  
De Xin Wu ◽  
Hua Pan Xiao
Keyword(s):  
Finite Element Method ◽  
Dynamic Model ◽  
Control Strategy ◽  
Wire Rope ◽  
Tension Control ◽  
Analysis Software ◽  
Collaborative Simulation ◽  
Body Dynamics ◽  
Multi Body ◽  
And Control

The dynamic model of wire rope with contact is presented based on finite element method and the flexible multi-body dynamics theory by putting the contact force between the wire rope and drum. The unilateral anti-sway and tension control strategy is put forward, and the dynamic model and collaborative simulation of payload motion for deployment system is modeled by dynamic analysis software RecurDyn and control library Colink. The correctness of the collaborative simulation model and control strategy is validated by analysis and comparison , which lays the foundation for further research on dynamic simulation of virtual prototype in nonlinear and complex mechanical-control system.

Control Strategy of Coiling Tension Based on RBF-NN Inverse System

2012 ◽  
Vol 503-504 ◽  
pp. 1276-1279
Author(s):  
Chao Wei Duan ◽  
Chao Zhang
Keyword(s):  
Control Strategy ◽  
Control Process ◽  
Inverse System ◽  
Tension Control ◽  
System Control ◽  
Rbf Neural Networks ◽  
Indirect Control ◽  
Constant Tension ◽  
Coiling Tension ◽  
Control Accuracy

Based on the study of coiler tension indirect control process, the purpose is to improve the control accuracy of the constant tension by the introduction of RBF neural networks and inverse system control theory. Depending on the physical characteristic of coiling tension control process, it could build the inverse system model for coiling tension control. By analyzing simulation results, this control strategy has great significance to the actual production.

scholarly journals Ramp - Metering Algorithms Evaluated within Simplified Conditions

2017 ◽  
Vol 13 (2) ◽  
pp. 112-119 ◽  
Author(s):  
Aleš Janota ◽  
Peter Holečko ◽  
Michal Gregor ◽  
Marián Hruboš
Keyword(s):  
Control Strategy ◽  
Control Strategies ◽  
Ramp Metering ◽  
Transport Infrastructure ◽  
Transport Systems ◽  
Intelligent Transport Systems ◽  
Control Zone ◽  
Intelligent Transport ◽  
Traffic Volumes ◽  
Freeway Networks

Abstract Freeway networks reach their limits, since it is usually impossible to increase traffic volumes by indefinitely extending transport infrastructure through adding new traffic lanes. One of the possible solutions is to use advanced intelligent transport systems, particularly ramp metering systems. The paper shows how two particular algorithms of local and traffic-responsive control (Zone, ALINEA) can be adapted to simplified conditions corresponding to Slovak freeways. Both control strategies are modelled and simulated using PTV Vissim software, including the module VisVAP. Presented results demonstrate the properties of both control strategies, which are compared mutually as well as with the initial situation in which no control strategy is applied

An integrated batch annealing furnace simulator

2004 ◽  
Vol 120 ◽  
pp. 809-817
Author(s):  
S. S. Sahay
Keyword(s):  
Mechanical Properties ◽  
Control Strategy ◽  
Temporal Evolution ◽  
Furnace Productivity ◽  
Annealing Furnace ◽  
Industrial Batch ◽  
Batch Annealing ◽  
Annealing Operation ◽  
Prediction Capability

An integrated batch annealing furnace simulator with the capability of predicting spatial and temporal evolution of temperature, microstructure and mechanical properties of the coils during the batch annealing operation has been developed. The prediction capability of this integrated simulator has been extensively validated with data collected from several industrial batch annealing operations. In this article, the problems in controlling a batch annealing operation via conventional temperature based control strategy has been highlighted. These problems can be effectively resolved by using the integrated simulator. Furthermore, the utility of this simulator has been illustrated by a case study on optimization of coil dimensions for maximization of furnace productivity.

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