Intermittent control models of human standing: similarities and differences.
Intermittent control models of human standing: similarities and differences.
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DOI：
10.1007/s00422-014-0587-5
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发表时间：
2014-04
影响因子：
1.9
通讯作者：
Lakie, Martin
中科院分区：
文献类型：
--
作者：
Gawthrop, Peter;Loram, Ian;Gollee, Henrik;Lakie, Martin
两种架构的间歇控制进行了比较和对比的情况下，单倒立摆模型经常用于描述站在人类。的架构是相似的，因为它们使用由切换事件打断的开环控制期间，当跨越切换表面，以保持系统状态轨迹接近的轨迹，导致平衡。这些架构在两个重要方面有所不同。首先，在一种情况下，开环控制轨迹由系统匹配保持产生，而在另一种情况下，开环控制信号为零。第二，在一种情况下使用预测，而在另一种情况下不使用预测。本文对前一种差异进行了研究。零控制替代导致与极限环相关的周期性振荡;而系统匹配控制替代给出包含平衡点且不具有振荡行为的轨迹（包括同宿轨道）。尽管这种行为的差异，它进一步表明，行为可以出现类似的系统被扰动时，由加性噪声或系统匹配的轨迹生成被扰动。本研究的目的是找到一种共同的方法来理解这两种替代方案的理论性质，其双重目的是选择为当前实验数据提供最佳解释的方法（其本身可能无法区分这两种替代方案），并建议未来的实验来区分这两种替代方案。
Two architectures of intermittent control are compared and contrasted in the context of the single inverted pendulum model often used for describing standing in humans. The architectures are similar insofar as they use periods of open-loop control punctuated by switching events when crossing a switching surface to keep the system state trajectories close to trajectories leading to equilibrium. The architectures differ in two significant ways. Firstly, in one case, the open-loop control trajectory is generated by a system-matched hold, and in the other case, the open-loop control signal is zero. Secondly, prediction is used in one case but not the other. The former difference is examined in this paper. The zero control alternative leads to periodic oscillations associated with limit cycles; whereas the system-matched control alternative gives trajectories (including homoclinic orbits) which contain the equilibrium point and do not have oscillatory behaviour. Despite this difference in behaviour, it is further shown that behaviour can appear similar when either the system is perturbed by additive noise or the system-matched trajectory generation is perturbed. The purpose of the research is to come to a common approach for understanding the theoretical properties of the two alternatives with the twin aims of choosing which provides the best explanation of current experimental data (which may not, by itself, distinguish beween the two alternatives) and suggesting future experiments to distinguish beween the two alternatives.
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DOI：
10.1111/j.2044-8295.1948.tb01149.x
发表时间：
1948-03-01
期刊：
BRITISH JOURNAL OF PSYCHOLOGY-GENERAL SECTION
影响因子：
--
作者：
Craik, K. J. W.
通讯作者：
Craik, K. J. W.
DOI：
10.1098/rspb.2010.2325
发表时间：
2011-03-22
期刊：
Proceedings. Biological sciences
影响因子：
--
作者：
Brembs B
通讯作者：
Brembs B
影响因子：
2.1
作者：
Gawthrop, Peter J.;Wang, Liuping
通讯作者：
Wang, Liuping
影响因子：
6.4
作者：
BARON, S;KLEINMAN, DL;LEVISON, WH
通讯作者：
LEVISON, WH
DOI：
10.1243/09596518jsce417
发表时间：
2007-11-01
影响因子：
1.6
作者：
Gawthrop, P. J.;Wang, L.
通讯作者：
Wang, L.