Research on temperature control technology for laser molding of thermoplastic composite materials

Ningzhi Weng; Fei Wang; Chengshuang Zhang; Antong Jiang; Yanling Bao; Caizhi Jin; Chengzhi Su; Zhongming Su

doi:10.1117/12.2690228

17 August 2023 Research on temperature control technology for laser molding of thermoplastic composite materials

Ningzhi Weng, Fei Wang, Chengshuang Zhang, Antong Jiang, Yanling Bao, Caizhi Jin, Chengzhi Su, Zhongming Su

Proceedings Volume 12757, 3rd International Conference on Laser, Optics, and Optoelectronic Technology (LOPET 2023); 127570Q (2023) https://doi.org/10.1117/12.2690228
Event: 3rd International Conference on Laser, Optics and Optoelectronic Technology (LOPET 2023), 2023, Kunming, China

Abstract

Continuous carbon fiber reinforced thermoplastic composites have problems such as long temperature self setting time, high overshoot, and low control accuracy during laser in situ molding, resulting in poor component forming quality. This article designs a temperature closed-loop control system based on an intelligent fuzzy proportional-integral-differential (PID) controller. By introducing a fuzzy self-tuning PID algorithm, the goal of quickly adjusting to the working temperature when turned on is achieved. The temperature overshoot is significantly reduced, and the temperature control accuracy is improved. According to the requirements of laser in situ forming of carbon fiber reinforced polyether ether ketone composite materials, a laser in situ forming experimental device was built. Through simulation testing and comparison of forming temperature, the results showed that compared with traditional PID controllers, when using an intelligent fuzzy PID controller to control temperature, the temperature control accuracy was maintained at ± 10 ℃, the overshoot percentage was about 2.29%, and the adjustment time was about 9.7 seconds. All indicators met the actual engineering requirements, The temperature setting effect is good and the fitting degree is high. Therefore, the overall performance of the intelligent fuzzy PID controller is far superior to traditional PID controllers, meeting the temperature control requirements in the laser in situ molding process of thermoplastic composite materials.

Citation Download Citation

Ningzhi Weng, Fei Wang, Chengshuang Zhang, Antong Jiang, Yanling Bao, Caizhi Jin, Chengzhi Su, and Zhongming Su "Research on temperature control technology for laser molding of thermoplastic composite materials", Proc. SPIE 12757, 3rd International Conference on Laser, Optics, and Optoelectronic Technology (LOPET 2023), 127570Q (17 August 2023); https://doi.org/10.1117/12.2690228

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KEYWORDS

Fuzzy logic

Temperature control

Composites

Temperature metrology

Control systems

Laser applications

Carbon fibers

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