Study On Hydraulic Control System Of The Sector Section Roll Gap Of Continuous Casting

In modern steel production, continuous casting as a new method of casting, the segment is the continuous casting unit in the main equipment segment gaps of the level of control will directly affect the quality of plate thickness of the final rolling quality plays a very important role. In this paper, the original hydraulic system will be transformed on the basis of the servo valve to replace the original high-speed response valve, designed a study with high accuracy, rapid response and stability of the electro-hydraulic servo control system. Based on this, this paper is divided into several parts.First of all, gave a briefing on twin-roll thin strip continuous casting technology and its research and development at home and abroad, and several common system of continuous casting segment control. Through comparative analysis of their advantages and disadvantages to the feasibility of using the system.Subsequently, the clear mandate requirements, and the hydraulic system in accordance with the basic functions and tasks to develop the programme and the mapping of hydraulic control system schematic. Through the continuous casting segment of the actual work of the analysis and control model, designed by the hydraulic system components and a selection of relevant parameters, it is also necessary to check the selected components related to ensure that components can be Meet the system requirements for the work.In selecting the system components, according to the hydraulic system modeling on the theory of asymmetric hydraulic cylinder valve control system structure model.The model established by the necessary parameters to determine the transfer function. Boulder also adopted a system to discuss plans and may affect the stability of German system of factors. Win MATLAB/Simulink model of the system closed-loop simulation analysis, research system response characteristics.According to the dynamic characteristics of the simulation results, a PID controller to improve the system of control. Through in-depth understanding of the PID controller, for the actual control object is nonlinear, time-varying parameters such as distribution and characteristics of comparison in the quality control strategy, and further use of fuzzy adaptive PID the system more accurate control of the system to control precision simulation.