Study On Width Control And Optimization Algorithm Of Hot Strip

The 21 st century is an economic globalization era,in this age science and techonology is rapidly developing.In such a background,the development of China has much more high-tech industry as prominent measures to promote economic development and improve quality industry and efficiency of economic growth.In the rolling steel enterprises,in order to improve the quality of strip steel and the international competitiveness,it is a necessary to reduce the cost,it is an important material to develop rolling technology and improve the quality of strip steel.The width,thickness,shape control is the basic methods to improve the quality of the strip steel and reduce the cost,therefore,it is the right direction of the rolling steel technological development to focus on solving the problems caused by the width,thickness deviation,and shape factors.The basic purpose of the strip steel width control is to obtain the width which is needed,but it is impossible when the rolling strip steel is thin and cold,so the strip steel control mainly refers to the hot-rolling mill width control.The main work is as follows:(1)According to the characteristics of hot strip rough rolling process,we build the suitable technological parameters' mathematical models respectively for horizontal rolling and wedge rolling at tail;(2)We study automatic width control of Edger Roll Milling of rough mill,new technology is used include Short Stroke Auto Width Control(SS-AWC),Force Auto Width Control(RF-AWC),Feed forward Auto Width Control(FF-AWC)and Dynamic Setup.First we need find out the mathematics models of new technology,give out control program sequence,and write program and control equipment.Finally get effect of new technology using at width control.(3)In this paper,basing on the hot-rolling short strole control model and genetic algorithm which is stochastic and iterative,etc.,genetic algorithm and optimized genetic algorithm are applied to head and tail the short stroke control of the strip steel,they solve the problem that the strip steel width control precision is not good due to width loss of the hot-rolling strip steel head and tail.adaptive genetic algorithm is used to optimize theshort-stroke control of stripe steel head,the width control accuracy of strip steel's head is improved through the adaptive genetic algorithm,and the advantage of adaptive genetic algorithm is proposed.