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跑步机炼期间心率的反控制基于一个两相响应模型

Hanjie Wang¹, Kenneth J Hunt¹

¹rehaLab - the Laboratory for Rehabilitation Engineering, Division of Mechatronics and Systems Engineering, Department of Engineering and Information Technology, Institute for Human Centered Engineering HuCE, Bern University of Applied Sciences, Biel, Switzerland.

|October 23, 2023

概括

与一级模型 (C1) 相比,二级模型补偿器 (C2) 在跑步机炼期间显著改善了自动心率控制. C2表现出卓越的准确性和动态响应,增强了运动控制系统.

科学领域:

生物医学工程生物医学工程
控制系统工程控制系统工程
运动生理学运动生理学

背景情况:

在运动期间自动控制生理参数对于研究和培训至关重要.
运动期间准确的心率 (HR) 追踪需要强大的控制系统设计.
之前的研究已经探索了使用循环人体运动计的HR控制,而基于跑步机的系统的数据有限.

研究的目的:

从理论上推导出一个通用的反设计策略,用于线性,时间不变模型中的恒定输入灵敏度函数.
实证地比较二级补偿器 (C2) 与一级补偿器 (C1) 的动态性能和跟踪精度,用于在跑步机运动期间的HR控制.

主要方法:

23名健康的参与者参加了35分钟的跑步机跑步课程.
用两个补偿器自动控制心率:C1 (一级模型) 和C2 (二级模型).
基于跟踪错误和控制信号功率来评估性能.

主要成果:

补偿器C2的准确性显著提高,平均根-平均平方跟踪误差降低了7% (1.98比2.13bpm,p=0.026).
补偿器C2表现出明显更大的动力,平均控制信号功率高出17% (23.4 × 10-4 m2/s2对比20.0 × 10-4 m2/s2,p=0.011).
C2的增强性能归因于第二阶模型在捕捉心脏对运动反应方面的卓越保真度.

结论:

与第一阶模型相比,第二阶模型更准确地表示了心脏对运动的反应.
基于二级模型的补偿器C2被推用于优先考虑心率跟踪精度和跑步机运动期间动态控制的应用.
这些发现与以前使用循环人体表仪的研究结果一致,这表明在各种炼模式中具有普遍性.

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