| Curing has a vcry important role in the process of tire vulcanization. The quality of the tire is directly affected by the curing effect. In the curing stage, the control of the quality of the tire vulcanizing temperature plays a vital role. Traditional temperature control technology is used in a simple PID control, but PID control algorithm can not solve the problem of some disturbance caused by external factors. So it is necessary to introduce appropriate control methods to improve intelligence, which is essential for the tire curing process improvement.This article firstly analyze the tire model by using CATIA and ANSYS software, then the entire deformations, stresses, strains under inflation conditions are analyzed. On the basis of this, starting with the tire vulcanization process, we analysis the impact on its tires vulcanization vulnerable parts of the stress-strain properties. After this, the research object of this thesis is overheated water curing medium of radial tire. Some influence factors and obstructions which caused by temperature measuring delay and flow changing of filling water and backwater are analyzed deeply aiming at solving the problem of pipeline vibration, water pump failures and curing phenomenon ineffective caused by control delay, product quality decline, etc. Through simplifying the model of overheated water, combined with the assumptions, we established a mathematical model of hot water temperature control system according to the laws of heat transfer and thermal equilibrium theory. Because the system has the characteristics of time-varying, uncertainty and control delaying, so we introduced the GPC control algorithm which have good robustness. This algorithm not only hold the characteristics of conveniently using, but also keep the characteristics of having good robustness. It enables the system can accurately control the temperature of overheated water.Finally through the simulation, we analyzed the control performance of GPC overheated water temperature control system, and compared the simulation results with traditional PID control system. The simulation results show that, the design of GPC control algorithm solved the problem of large fluctuation of over heated water temperature, the problem of control delay and the problem of overshoot. Through controlling the temperature of overheated water, it improved tire production efficiency, extend equipment life, reduce maintenance work productivity, and ultimately achieve the energy saving. |
