Research on dual-loop PID control system for tidal volume at high-altitude areas

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Research on dual-loop PID control system for tidal volume at high-altitude areas
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                        Wang HuiquanWang Huiquan
1.School of Life Sciences，Tiangong University，Tianjin 300387,China； 2.Tianjin Key Laboratory of Quality Control and Evaluation Technology for Medical Devices，Tianjin 300387, China
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Wei ZhipengWei Zhipeng
2.Tianjin Key Laboratory of Quality Control and Evaluation Technology for Medical Devices，Tianjin 300387, China； 3.School of Electronics and Information Engineering，Tiangong University，Tianjin 300387,China
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Ma Xin4Ma Xin
School of Computer Science and Technology，Tiangong University，Tianjin 300387,China
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Xing Haiying3Xing Haiying
School of Electronics and Information Engineering，Tiangong University，Tianjin 300387,China
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Affiliation:1.School of Life Sciences，Tiangong University，Tianjin 300387,China; 2.Tianjin Key Laboratory of Quality Control and Evaluation Technology for Medical Devices，Tianjin 300387, China; 3.School of Electronics and Information Engineering，Tiangong University，Tianjin 300387,China; 4.School of Computer Science and Technology，Tiangong University，Tianjin 300387,China
Clc Number:R197.39
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Abstract:

To solve the problem of low control accuracy of the tidal volume emergency ventilation for lower air pressure at high altitudes, we propose a dual-loop PID tidal volume control system, which utilizes a pressure-compensated PID controller to adjust fan speed, supplemented by an integral-separate PID controller in order to achieve precise control of airflow velocity.Compared with single-loop PID control, the rapid response and no overshooting are observed in the performance tests of the dual-loop control system at an altitude of 4 370 m and atmospheric pressure of 59 kPa, in addition, the output error of the average airflow velocity decrease to 3.19% (the maximum error is 4.1%), which is superior to that of current clinical equipment. Our work offers an effective solution for high-altitude emergency ventilator tidal volume control, and contributes important insights to the development of ventilation control technology in special environments.

Key words:high-altitude area;low air pressure;emergency ventilators;tidal volume control;pressure compensation;dual-loop PID

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Online: June 07,2024
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