scholarly journals Modeling, Prediction, and Control of Heating Temperature for Tube Billet

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Yachun Mao ◽  
Dong Xiao ◽  
Dapeng Niu
Keyword(s):  
Control Method ◽  
Heating Temperature ◽  
Nonlinear Models ◽  
Time Lag ◽  
Industrial Applications ◽  
Billet Temperature ◽  
Tube Billet ◽  
Prediction And Control ◽  
Coupling Characteristics ◽  
And Control

Annular furnaces have multivariate, nonlinear, large time lag, and cross coupling characteristics. The prediction and control of the exit temperature of a tube billet are important but difficult. We establish a prediction model for the final temperature of a tube billet through OS-ELM-DRPLS method. We address the complex production characteristics, integrate the advantages of PLS and ELM algorithms in establishing linear and nonlinear models, and consider model update and data lag. Based on the proposed model, we design a prediction control algorithm for tube billet temperature. The algorithm is validated using the practical production data of Baosteel Co., Ltd. Results show that the model achieves the precision required in industrial applications. The temperature of the tube billet can be controlled within the required temperature range through compensation control method.

scholarly journals Application of Numerical Modelling and Genetic Programming in Hydrocarbon Seepage Prediction and Control for Crude Oil Storage Unlined Rock Caverns

Geofluids ◽  
2017 ◽  
Vol 2017 ◽  
pp. 1-11 ◽  
Author(s):  
Ebrahim Ghotbi Ravandi ◽  
Reza Rahmannejad ◽  
Saeed Karimi-Nasab ◽  
Amir Sarrafi
Keyword(s):  
Genetic Programming ◽  
Numerical Modelling ◽  
Crude Oil ◽  
Control Method ◽  
Effective Parameters ◽  
Two Phase ◽  
Seepage Control ◽  
Oil Storage ◽  
Prediction And Control ◽  
And Control

Seepage control is a prerequisite for hydrocarbon storage in unlined rock caverns (URCs) where the seepage of stored products to the surrounding host rock and groundwater can cause serious environmental and financial problems. Practically seepage control is performed by permeability and hydrodynamic control methods. This paper employs numerical modelling and genetic programming (GP) for the purpose of seepage prediction and control method determination for the crude oil storage URCs based on the effective parameters including hydrogeologic characteristic of the rock and physicochemical properties of the hydrocarbons. Several levels for each parameter were considered and all the possible scenarios were modelled numerically for the two-phase mixture model formulation. The corresponding seepage values were evaluated to be used as genetic programming data base to generate representative equations for the hydrocarbon seepage value. The coefficients of determination (R2) and relative percent errors of the proposed equations show their ability in the seepage prediction and permeability or hydrodynamic control method determination and design. The results can be used for crude oil storage URCs worldwide.

Research on prediction and control method of car exterior noise

2012 ◽  
Vol 59 (1) ◽  
pp. 44 ◽  
Author(s):  
Shuming Chen ◽  
Dengfeng Wang ◽  
Xing Qu ◽  
Chuanbing Li ◽  
Bo Liu
Keyword(s):  
Control Method ◽  
Prediction And Control ◽  
And Control

scholarly journals Intelligent Control of a Novel Hydraulic Forging Manipulator

2011 ◽  
Vol 2011 ◽  
pp. 1-7 ◽  
Author(s):  
J. Wang ◽  
F. Gao ◽  
Y. Zhang
Keyword(s):  
Intelligent Control ◽  
Position Control ◽  
Control Method ◽  
Industrial Applications ◽  
Heavy Duty ◽  
Force Perception ◽  
Large Size ◽  
Forging Manipulator ◽  
Combination Of Methods ◽  
And Control

The increased demand for large-size forgings has led to developments and innovations of heavy-duty forging manipulators. Besides the huge carrying capacity, some robot features such as force perception, delicacy and flexibility, forging manipulators should also possess. The aim of the work is to develop a heavy-duty forging manipulator with robot features by means of combination of methods in mechanical, hydraulic, and control field. In this paper, through kinematic analysis of a novel forging manipulator, control strategy of the manipulator is proposed considering the function and motion of forging manipulators. Hybrid pressure/position control of hydraulic actuators in forging manipulator is realized. The feasibility of the control method has been verified by the experiments on a real prototype of the novel hydraulic forging manipulator in our institute. The intelligent control of the forging manipulator is performed with programmable logic controller which is suitable for industrial applications.

Virtual Thermal Sensing and Control of Heat Distribution Using State Estimation

2012 ◽  
Author(s):  
Kaveh Fathian ◽  
Fatemeh Hassanipour ◽  
Nicholas R. Gans
Keyword(s):  
Steady State ◽  
Temperature Distribution ◽  
Heat Flow ◽  
Control Method ◽  
Industrial Applications ◽  
Electrical Circuit ◽  
Accurate Estimation ◽  
Plate Temperature ◽  
And Control ◽  
State Error

Many industrial applications require or can be improved by strict control of the temperature distribution on a surface. This initial investigation presents modeling and control of heat flow on an aluminum plate. Temperature distribution is modeled using a dense equivalent electrical circuit. An observer is designed based on the model to estimate the temperature distribution on the plate. The estimation is used in a controller to regulate the temperature of a desired point on the plate, given discrete heat input elements but no cooling elements. Experiments are conducted to compare the realism of the heat flow model and efficacy of the control method with experimental data. Results show that the steady state error between the actual and estimated temperatures at different points on the surface is always less than 0.5°C, which indicates accurate estimation of the temperature. The RMS error between desired and actual temperatures through all experiments is less than 2°C which indicates fast regulation and low steady state error.

Sign in / Sign up

Export Citation Format

Share Document