Transactions of Materials and Heat Treatment

Title：ECAP process and experiment of TA1 titanium alloy based on fuzzy PID temperature control

Authors： Zhao Jun Xu Haojie

Unit： School of Materials Science and Engineering Xiamen University of Technology

KeyWords： proportional-integral-derivative algorithm TA1 titanium alloy extrusion temperature fuzzy control overshooting amount regulation time stablility error

ClassificationCode：TG316

year,vol(issue):pagenumber：2024,49(10):75-81

Abstract：

Aiming at the problems of narrow range of deformation temperature and difficulty of deformation at room temperature in the extrusion process of TA1 titanium alloy, the basic principle of heat transfer in the mold was studied by applying the heat conduction theory, and a fuzzy PID algorithm was designed to realize the self-tuning of PID controller parameters in the process of regulating temperature, so as to achieve the precise control of temperature in the extrusion process. The simulation of algorithm response speed and accuracy and the test,comparison and analysis of microstructure were carried out. The results show that after debugging, compared with the traditional PID algorithm, the overshoot amount of the fuzzy PID algorithm is 8.86%, a reduction of 3.97%; the regulation time is 57.56 s, a reduction of 56.88 s; the stability error is 0, a reduction of 0.9%. The experimental study shows that the smaller the mold temperature change, the more obvious the grain refinement of the material after deformation, and the more dense and uniform the tissue distribution.

Funds：

厦门市自然科学基金资助项目（3502Z20227222）

作者简介：赵军（1973-），男，博士，教授，硕士生导师,E-mail：junzhao@xmut.edu.cn

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