The Modeling And Numerical Simulation Of Steering Mechanism And Balanced Regulate And Control In The Aluminum Strip Hot Rolling Process

In the rolling process, rolled forward along the longitudinal structure motion parameters should be symmetrical along the horizontal. Horizontal center line asymmetry of the relative to rolling parameters, the main external manifestation is rolling steering. Steering is the state of formation of asymmetric is an asymmetric incentive for the left and right under the dynamic evolution of the disturbance, belongs to a devastating condition and needs for balance control. In this paper, the evolution of this dynamic carry on mechanism, model description, numerical simula-tion, obtain balance control model and strategy.First of all, the paper builds state model system for the non-symmetrical and discuss asymmetric around the state evolution mechanism and balance control strategy. The main building are several aspects of the model:1)the paper structures reasonable feature difference, describes all kinds of disturbance incentives and the results about the state of the non-symmetrical features, builds one incentive and combines incentives under the differential amount of disturbance evolution model of the thickness of the non-symmetric state and speed of the state evolution model of asymmetric and studying asymmetric about the evolution of the mechanism.2)establishes the online detection model to reflect the non-symmetric characteristics of rolling force of about amount of observable difference(side of the operation on both sides of the rolling force and the drive side difference), paper can use their right asymmetric amplification of the results of dispersion, sensitivity of disturbance incentive difference and real-time observe ability and build rolling around the thickness of the non-symmetrical features of difference and the speed difference of non-symmetric characteristics of the amount of on-line observation of model.On the basis of difference about the amount of rolling force and the changes in rolling force steering, paper can observe the thickness of the non-symmetric state in the process of rolling and roll out of the speed of rolling around the state and the steering characteristics of the non-symmetric.3)with approximately the amount of roll gap difference of control(difference on both sides of roll gap adjustment), paper can eliminate rolling about the thickness of the thickness difference of non-symmetric state of equilibrium control model, rolling speed of the state that is wandering around the non-symmetrical features of the state of balance control model of the speed difference and rolling state of the eccentric location of the non-symmetric state of balance control model of eccentric. On the basis of On-line observation of indirect measurement model of non-symmetric state of difference, paper can get balance control required for differential regulation of the amount of roll gap to control the roll gap difference.4) paper builds steering locus equation, get roll out of the amount of time-varying steering function; building rolling thickness difference between the rack transfer genetic model and eccentric expansion of the rack in the genetic model; explains the thickness of rolled non-symmetrical features of horizontal transfer mechanism between the rack caused by a variety of incentives, rack extension mechanism of transfer between rolling asymmetric lateral velocity characteristics and eccentric rolling.5) On the basis of field data, paper can rolling rack at the end of the amount of steering neural network model for training other. On the basis of rolling phase of the data on the stability characteristics, it can calculate tail rolling chassis at the end of phase steering amount of features. On the basis of field data, paper can build poor adjustment of the end of the rack rolling force curve Library, then it can get steering of the amount of balance control differential regulation of the amount of roll gap.Paper initiates the asymmetrical status or graphic method. It includes: 1) reflected the rolling force and deformation characteristics of the 3D asymmetric about rolling force differential which is 3D-â–³P diagram. 2) reflected asymmetrical rolling force characteristics and steering run bias-rolling force differential chart which isâ–³-â–³P.Using this diagram, paper can explain thickness of asymmetric state and the speed of asymmetric mechanisms and build perturbation dispersion state of dispersion and results of the evolution of model; it can explain roll gap sent for the thickness of the regulation about balance control and speed around the principle of balance control and build in order to control the amount of roll gap difference of the balance of regulation and control model.Paper goes ahead the state of asymmetric evolution process simulation and a variety of incentives under asymmetric disturbance state of dynamic numerical simulation of the evolution via Finite Element Method and asymmetric state of the evolution of model validation and parameter estimation.Paper bases on the three-dimensional adjustment of roll gap difference algorithm (3D-AGC). It bases on both sides of the adjusted quantity which is prediction errors and regulate asymmetric state target volume. It mix together the system pressure AGG algorithm. It doesn't interfere and change Pressure AGG the detection algorithm and control target.Proposes hot rolling process lateral balance control strategy, controls precision aluminum horizontal structure size, implements the correction of hot rolling aluminum strip, maintains the stability of rolling.