Research on Smelting Temperature Control of Wear-resistant Ring Raw Materials Based on Stepped Fuzzy PID

For the problem that the smelting temperature is difficult to control caused by the nonlinear, strong coupling and large time delay of raw materials' smelting process in the production of wear-resistant ring, a fuzzy PID temperature controller based on stepped control is proposed. According to the difference in temperature error, the heating process is divided into three stages, corresponding to three heating methods to form a stepped fuzzy PID control system structure. Through simulation experiments, it is verified that the developed controller can speed up the response speed, shorten the adjustment time, reduce overshoot and temperature fluctuations, improve system dynamic performance, so as to effectively optimize the smelting temperature control process of wear-resistant ring raw materials.