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首页> 外文期刊>Mechatronics, IEEE/ASME Transactions on >Nonlinear Adaptive Control of a Piston Pump Mock Ventricle
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Nonlinear Adaptive Control of a Piston Pump Mock Ventricle

机译：活塞泵模拟室的非线性自适应控制

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High-performance control system for a piston pump mock ventricle is developed in this research to accurately reproduce the native ventricle's pumping dynamics and to secure the physiological feasibility of the cardiovascular circulatory simulator (CCS). The challenges are that a piston pump mock ventricle has inherent parameter uncertainties of check valve resistances, high bandwidth pressure dynamics, and hard nonlinearity due to check valves. To overcome these difficulties, a nonlinear adaptive control scheme is presented in this paper. A hardware CCS is constructed based on the electrical-analog reference model of the cardiovascular circulatory system and the mathematical model of the hardware was derived using fluidic element modeling and the parameter identification experiments. The adaptive controller was designed based on the derived model. Experimental results show that the adaptive control achieved outstanding control performance in spite of the parameter uncertainties and yielded a good match with the reference model behavior. As a result, high quality elastance curve over the whole cardiac cycle was made possible at the level that has never been achieved.
机译：在这项研究中，开发了一种用于活塞泵模拟心室的高性能控制系统，以准确地再现原始心室的泵送动力学，并确保心血管循环模拟器（CCS）的生理可行性。挑战在于，活塞泵模拟心室具有内在的参数不确定性，如单向阀电阻，高带宽压力动力学以及由于单向阀引起的硬非线性。为了克服这些困难，本文提出了一种非线性自适应控制方案。基于心血管循环系统的电模拟参考模型构建了硬件CCS，并利用流体元件建模和参数辨识实验推导了该硬件的数学模型。基于派生模型设计了自适应控制器。实验结果表明，尽管存在参数不确定性，自适应控制仍具有出色的控制性能，并且与参考模型的行为具有良好的匹配性。结果，在从未达到的水平上就可以在整个心动周期上获得高质量的弹性曲线。

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