基于模糊PID控制的新型镁合金铸造性能研究

Study on Casting Properties of New Magnesium Alloy Based on Fuzzy PID Control

对Mg-8Al-0.6Zn-0.4V和Mg-8Al-0.6Zn-0.5Zr两种镁合金进行了常规铸造和模糊PID控制铸造下的力学性能和磨损性能的测试与分析。结果表明:与常规铸造相比,模糊PID控制时Mg-8Al-0.6Zn-0.4V合金的抗拉强度、屈服强度分别增大22、23 MPa,断后伸长率仅减小0.3%,磨损体积减小27.59%;Mg-8Al-0.6Zn-0.5Zr合金的抗拉强度、屈服强度分别增大24、23 MPa,断后伸长率减小0.4%,磨损体积减小28.13%。模糊PID控制有助于提高两种铸造镁合金的力学性能和耐磨损性能。

The mechanical properties and wear properties of Mg-8Al-0.6Zn-0.4V and Mg-8Al-0.6Zn-0.5 Zr magnesium alloys under conventional casting and fuzzy PID controlled casting were tested and analyzed. The results show that when using fuzzy PID control, compared with those of the common casting, the tensile strength and yield strength of Mg-8Al-0.6Zn-0.4V alloy increase by 22 MPa and 23 MPa respectively, the elongation decreases by 0.3% and the wear volume decreases by 27.59%;the tensile strength and yield strength of Mg-8Al-0.6Zn-0.5 Zr alloy increase by 24 MPa and 23 MPa respectively, the elongation decreases by 0.4% and the wear volume decreases by 28.13%. Fuzzy PID control is helpful to improve the mechanical properties and wear resistance of the two cast magnesium alloys.