A New Approach of Combined Shape and Gauge Control

2010 ◽  
Vol 145 ◽  
pp. 123-127
Author(s):  
Xiao Ping Zhang ◽  
Chang Jian Zhi ◽  
Bao Sun ◽  
Xiao Zhong Du ◽  
Jin Zhi Zhang
Keyword(s):  
Control Systems ◽  
Load Distribution ◽  
Shape Control ◽  
Control Method ◽  
Rolling Process ◽  
Distribution Method ◽  
New Approach ◽  
On Line ◽  
Strip Crown

Due to the coupled function of shape and gauge control in rolling process, mutual effects must be considered when shape control or gauge control is carried out. Traditional shape and gauge control theories are of independent and the control systems are also separated, so it is difficult to ensure the quality of shape and gauge simultaneously. Based on the updated shape theory and a single parameter model of load distribution method, a combined shape and gauge control method was developed, which can adjust rolling regulations on-line according to the deviation of strip crown measured at the exit of the rolling mill. The method can ensure gauge precision while strip crown is adjusted and the purpose of combined shape and gauge control is reached.

Development of a Combined Shape and Gauge Control Scheme Based on Function Φ

2011 ◽  
Vol 418-420 ◽  
pp. 1118-1123
Author(s):  
Xiao Ping Zhang ◽  
Chang Jian Zhi ◽  
Rui Ren ◽  
Xiao Zhong Du
Keyword(s):  
Load Distribution ◽  
Shape Control ◽  
Rolling Process ◽  
Strip Rolling ◽  
Distribution Method ◽  
Control Scheme ◽  
On Line ◽  
And Function ◽  
Strip Crown

Combined shape and gauge control is a hot issue in continuous hot plate and strip rolling field. Due to the coupled function of shape and gauge control in rolling process, mutual effects must be considered when shape control is carried out. Traditional shape and gauge control theories are of independent and the control systems are also separated, so it is difficult to ensure the quality of shape and gauge simultaneously. Based on the shape theory of shape and gauge control and function Φ derived from the load distribution method of Ichiro Imai , a combined shape and gauge control scheme was developed, which can adjust rolling regulations on-line according to the deviation of strip crown measured at the exit of the rolling mill. The method can ensure gauge precision while strip crown is adjusted and the purpose of combined shape and gauge control is reached.

“On line” collection quality of life (QL) items in the oncological hospital at home (OHH): A new approach

1993 ◽  
Vol 29 ◽  
pp. S215
Author(s):  
S. Glordani ◽  
C. Frenquelli ◽  
V. Paletta ◽  
S. Salvagni ◽  
F. Pannuti
Keyword(s):  
Quality Of Life ◽  
New Approach ◽  
On Line ◽  
Hospital At Home ◽  
At Home

Towards Collaborative Multidimensional Query Recommendation with Triadic Association Rules

2015 ◽  
Vol 7 (3) ◽  
pp. 17-35 ◽  
Author(s):  
Sid Ali Selmane ◽  
Omar Boussaid ◽  
Fadila Bentayeb
Keyword(s):  
Association Rules ◽  
End Users ◽  
New Approach ◽  
Query Log ◽  
Log Files ◽  
Query Logs ◽  
On Line ◽  
Synthetic Datasets ◽  
Triadic Context

This paper describes a new personalization process for decisional queries through a new approach based on triadic association rules mining. This process exploits the decision query log files of end users and follows these five steps: (1) generation of a triadic context from the multidimensional query logs of OLAP1 query analysis server; (2) mapping the triadic context into the dyadic one; (3) computation of (conventional) dyadic association rules; (4) generation of triadic association rules through a factorization process of dyadic ones and convey a richer semantics. The aim of the personalization approach which is based on triadic rules is to recommend new decision queries to OLAP end users sharing some common properties. This paper aims at helping this class of users by recommending them personalized OLAP queries that they might use in their future OLAP sessions. To validate the approach, the authors developed a software prototype called P-TRIAR (Personalization based on TRIadic Association Rules) which extracts two types of triadic association rules from decision query log files. The first type of triadic rules will serve to the recommending queries by taking the collaborative aspect of OLAP users into account. The second type of triadic rules will enrich user queries. Preliminary experiments were conducted on both real and synthetic datasets to assess the quality of the recommendations in term of precision and recall measures, as well as the performance of their on-line computation.

Bloat Control Operators and Diversity in Genetic Programming: A Comparative Study

2010 ◽  
Vol 18 (2) ◽  
pp. 305-332 ◽  
Author(s):  
E. Alfaro-Cid ◽  
J. J. Merelo ◽  
F. Fernández de Vega ◽  
A. I. Esparcia-Alcázar ◽  
K. Sharman
Keyword(s):  
Control Method ◽  
Substantial Reduction ◽  
Genotypic Diversity ◽  
Benchmark Problems ◽  
New Approach ◽  
The Mean ◽  
Preliminary Study ◽  
Genetic Pool ◽  
Control Operators

This paper reports a comparison of several bloat control methods and also evaluates a recent proposal for limiting the size of the individuals: a genetic operator called prune and plant. The aim of this work is to test the adequacy of this method. Since a preliminary study of the method has already shown promising results, we have performed a thorough study in a set of benchmark problems aiming at demonstrating the utility of the new approach. Prune and plant has obtained results that maintain the quality of the final solutions in terms of fitness while achieving a substantial reduction of the mean tree size in all four problem domains considered. In addition, in one of these problem domains, prune and plant has demonstrated to be better in terms of fitness, size reduction, and time consumption than any of the other bloat control techniques under comparison. The experimental part of the study presents a comparison of performance in terms of phenotypic and genotypic diversity. This comparison study can provide the practitioner with some relevant clues as to which bloat control method is better suited to a particular problem and whether the advantage of a method does or does not derive from its influence on the genetic pool diversity.

scholarly journals Enhancing power quality of ANN controller based PhotoVoltaic source injected DVR

2018 ◽  
Vol 7 (2.31) ◽  
pp. 155
Author(s):  
T Ramesh ◽  
S K. Mayurinathan ◽  
R Saravanan ◽  
G Emayavaramban
Keyword(s):  
Distribution System ◽  
Distribution Systems ◽  
Control Method ◽  
Voltage Sag ◽  
Voltage Waveform ◽  
High Quality ◽  
Load Voltage ◽  
On Line ◽  
Stable Voltage

The DVR is a series connected FACTS controller used to compensate voltage disturbance in distribution systems. The main purpose of  the DVR is to examine the load voltage waveform regularly if any disorder happens, the equilibrium or excess voltage is injected to the load voltage. The most important advantage of the DVR is observance the users all the time on-line with high quality stable voltage maintaining the permanence of production.  In this dissertation, a Photovoltaic voltage injected with an ANN control method for DVR that protects a sensitive load, to counter voltage sag under uneven loading conditions (linear, non-linear) is presented. DVR along with other parts of the distribution system are simulated using MATLAB/ SIMULINK.  

The Design of Bending Force Shape Control System Based on Fuzzy Adaptive Control

2014 ◽  
Vol 945-949 ◽  
pp. 2794-2798
Author(s):  
Jun Shuang Ma
Keyword(s):  
Control System ◽  
Pid Controller ◽  
Shape Control ◽  
Fuzzy Controller ◽  
Control Performance ◽  
Steel Shape ◽  
On Line ◽  
And Control ◽  
Fuzzy Adaptive

This paper presents a fuzzy adaptive shape control system, which overcomes the shortcoming of simple PID controller and simple fuzzy controller. The PID parameters can be adjusted on-line in this system. The simulation result shows that the control system can improve the control performance and control quality of steel shape control.

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