National Institute of Technology Nagaland, Chumukedima, India.
Med Biol Eng Comput. 2023 Jul;61(7):1807-1820. doi: 10.1007/s11517-023-02795-1. Epub 2023 Mar 15.
Mechanical ventilator (MV) is a breathing support medical equipment used during medical surgery or in an intensive care unit (ICU) for critical patients to reduce the breathing work of the patient under ventilation. In this work, a piston-driven mechanical ventilator is studied. Such types of ventilators are generally used as anaesthesia ventilators with volume-controlled modes. A modern ventilator can operate in different modes, such as volume control, pressure control, or both. Pressure-controlled mode may be better suited for some cases, such as patients undergoing laparoscopic surgery, as compared to volume-controlled mode because it may increase compliance during pneumoperitoneum, enhance oxygenation, and lower the stress response postoperatively. The pressure profile of a PCV must exactly track the pressure profile of a patient under ventilation to avoid ventilator-induced diaphragmatic dysfunction. Therefore, an optimal internal model control base proportional integral (IMC-PI) controller is proposed. The optimum parameter of the filter component of the IMC-PI controller is found by an enhanced class topper optimization (ECTO) algorithm. The performance of the proposed controller is analyzed in different scenarios and compared with existing results. Graphical Abstract Optimal internal model proportional integral controller for human respiratory ventilator.
机械通气（MV）是一种呼吸支持医疗设备，用于在医疗手术中或在重症监护病房（ICU）中为重症患者提供支持，以减少通气患者的呼吸工作。本工作研究了一种活塞驱动的机械通气机。此类通气机通常用作具有容量控制模式的麻醉通气机。现代通气机可以在不同模式下运行，例如容量控制、压力控制或两者兼有。与容量控制模式相比，压力控制模式可能更适合某些情况，例如接受腹腔镜手术的患者，因为它可以在气腹期间增加顺应性、提高氧合作用并降低术后应激反应。PCV 的压力曲线必须精确跟踪通气患者的压力曲线，以避免通气引起的膈肌功能障碍。因此，提出了一种最优的内部模型控制基础比例积分（IMC-PI）控制器。通过增强的类极值优化（ECTO）算法找到 IMC-PI 控制器的滤波器组件的最优参数。分析了所提出的控制器在不同情况下的性能，并与现有结果进行了比较。
