Research Of Board-shaped Controller Based On FPGA

With the great development of modern industyl, the strip demand increase rapidly. Atpresent, the main factor that affect the production of the strip is the control precision of theflatness controller. The rational design of plate-shaped controller algorithm has became thekey point to develop the quality of strip shape.The control algorithm of plate-shaped controller and its realization on the FPGA arestudied in this thesis. Firstly, the background, significance and research application status ofthe strip shape control are discussed. The application status of control algorithms on FPGA isdescribed. Secondly, with the further study of the shape controlling, comprehensivemathematical model about gauge and shape is established. Besides, the control scheme onshape controler is drafted by analyzing the coupling situation of gauge and shape.Change theroutine feed forward compensation to the fuzzy decoupling based on the conventionaldecoupling thoughts. The scheme is validated by simulation experiment. At last, the scheme isapplied on the FPGA.In order to develop the control scheme to hardware, the shape decoupling controlerfunction is analyzed in detail. Each functional plate has been designed and simulated withVerilog HDL language by the design method of from top to bottom. In addition, thecorrectness has been checked in the end. So shape decoupling controller chip has finally beendeveloped based on FPGA. The chip is developed to hardware with the fuzzy decouplingthoughts and PID control algorithm. In order to verify the proposed design, we design asimple plate-shaped controller hardware circuit. The fuzzy decoupling control obtain a highercontrol precision and a stronger adaptability through the software simulation and board levelvalidation,and a better shape controlling has been achieved, too.With the decoupling control system realized on FPGA, the soft-ware algorithm change tohardware. The control algorithm running speed is improved, and a new deriction of theadvanced control algorithm on high speed control is provided.