Experimental construction of a cascade control structure for liquid temperature stabilization in a stirred tank

https://doi.org/10.31130/ud-jst.2025.23(12).126E

Tóm tắt: 1 | PDF: 6

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Author

  • Tran Hieu Nghia
    Quy Nhon College of Engineering and Technology, Vietnam
    Ngo Quang Thinh
    School of Electrical and Electronic Engineering, Hanoi University of Industry, Vietnam
    Nguyen Dang Khang
    School of Electrical and Electronic Engineering, Hanoi University of Industry, Vietnam
    Ngo Manh Tung
    School of Electrical and Electronic Engineering, Hanoi University of Industry, Vietnam

Từ khóa:

Liquid temperature control
Cascade control
Process control
PID

Tóm tắt

In food and beverage production, precise liquid temperature control is crucial for product quality. Similarly, in the nuclear industry, liquid temperature strongly affects efficiency, safety, and lifespan. This paper presents a cascade control method for liquid temperature regulation in a mixing tank, with an inner loop regulating flow rate via pump motor speed and an outer loop controlling temperature. The two-loop structure is compared with a conventional single-loop PI controller on the TecQuipment CE117 experimental module. Experimental results show that the cascade PI improves control quality, reducing settling time by approximately 17–36% under different operating conditions and halving recovery time under pump-stoppage disturbances, compared with the single-loop PI. These results indicate that the proposed cascade architecture is suitable for thermal process applications requiring accurate and robust temperature control.

Tài liệu tham khảo

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Dec 31, 2025
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Cách trích dẫn
Nghia, T. H., N. Q. Thinh, N. D. Khang, và N. M. Tung. “Experimental Construction of a Cascade Control Structure for Liquid Temperature Stabilization in a Stirred Tank”. Tạp Chí Khoa học Và Công nghệ - Đại học Đà Nẵng, vol 23, số p.h 12, Tháng Chạp 2025, tr 31-38, doi:10.31130/ud-jst.2025.23(12).126E.

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