University Science Park, University of Zilina, Univerzitna 8215/1, SK-01026 Zilina, Slovakia.
Department of Industrial Engineering and Construction, Universitat de les Illes Balears, 07122 Palma, Spain.
Sensors (Basel). 2021 Oct 20;21(21):6964. doi: 10.3390/s21216964.
The effects of a static magnetic field on systems with chaotic dynamical behavior have attracted little attention so far. Here, Chua's electronic circuit with an inductor placed in a static uniform magnetic field operating in a chaotic double-scroll regime is studied experimentally. The effect of the magnetic field on the duty cycle factor and the spike count rate, with spikes defined by crossings between the scrolls of the double-scroll attractor, is described. A slow monotonic variation in the duty cycle factor and constant spike count rate is observed for magnetic field intensities up to the threshold, where both these metrics change severely; the dynamic trajectory remains on one scroll and spikes disappear. The dependence of the static magnetic field intensity on Chua's circuit resistivity at the threshold is given. Two biomimetic magnetic chaotic sensors are proposed: one based on one Chua's circuit and another that can have various transfer functions and is composed of several independent Chua's circuits.
迄今为止，人们对静磁场对具有混沌动力行为的系统的影响关注甚少。在这里，我们对处在混沌双涡卷状态下的带有电感的蔡氏电路在静态均匀磁场中的实验进行了研究。描述了磁场对占空比因子和尖峰计数率的影响，其中尖峰由双涡卷吸引子的涡卷之间的交叉定义。在达到阈值之前，观察到占空比因子的缓慢单调变化和恒定的尖峰计数率，在这两个度量标准中都发生了严重的变化；动态轨迹仍然在一个涡卷上，并且尖峰消失。给出了阈值处蔡氏电路电阻对静磁场强度的依赖性。提出了两种仿生磁混沌传感器：一种基于一个蔡氏电路，另一种可以具有各种传递函数，并且由几个独立的蔡氏电路组成。
