amplitude and frequency modulation
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Brain waves have been detected and measured. These waves are electro-magnetic waves that flow through the membranes of cells and nerve fibers. Amplitude and frequency modulation (AM and FM) carries the information from cell to cell while the myelin coating prevents the information from being distorted. The Nodes of Ranvier are the regeneration stations so the information wave doesn’t die out. Interference of the waves creates holographic memories, coherent waves creating much stronger holograms than incoherent waves, which are far weaker than coherent waves. The autonomous nervous system carries health guided information (Placebo effect) the more coherent the signal, the stronger the health information is. Methods to create a positive, coherent mind and healthy body are given.


2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Hongyan Zang ◽  
Lili Huang ◽  
Tengfei Lei ◽  
Yanling Wang

In this study, we studied the effects of offset boosting on the memristive chaotic system. A system with symmetry and conditional symmetry was constructed, by adding the absolute value function to an offset boosting system. It is proved that the symmetric system or a conditionally symmetric system can be constructed with similar or the same dynamic characteristics by using certain correction and offset boosting in an asymmetric system. In addition to multiple stability, the memristive system can also realize the amplitude and frequency control by introducing a parameter. The simulation circuit verifies the amplitude modulation characteristics of the system.


Author(s):  
Oleg Nekrasov ◽  
Boris Smorodin

Nonlinear evolution of the electroconvective flow patterns is analysed in a horizontal low conductive fluid layer under heating  from above and under modulated charge injection.  To examine the complex evolution of the system, numerical simulations  are carried out using a finite difference method. The influence of  amplitude and   frequency modulation on the  oscillatory electroconvection is studied.    Traveling waves with modulated amplitudes and phase velocities and synchronously modulated patterns are found as stable solutions.


2021 ◽  
Vol 11 (7) ◽  
pp. 3267
Author(s):  
Zuzana Murčinková ◽  
Jozef Živčák ◽  
Jozef Zajac ◽  
Pavel Adamčík

In this study, the effect of multi-layer composite passive dampers on the dynamic properties of a mechanical system (a testing machine tool bench) was tested. Passive dampers are characterized by a layered structure, with each layer consisting of a specific structure of different materials, preferably foam polymers. The dynamic excitation is caused by a flat belt driving the rotor roller bearing by direct contact of the flat belt and bearing pin at a frequency of 1170–2170 Hz. The dynamic effects of the flat belt directly affect the complex dynamic effects inside rotor bearing, mainly torsional vibrations. A significant modification in the amplitude and frequency modulation and other evaluated dynamic parameters was obtained. By implementing passive dampers and modifying the mass and material damping, a decrease in amplitude at resonance of almost 30% was achieved.


Sensors ◽  
2020 ◽  
Vol 20 (24) ◽  
pp. 7077
Author(s):  
Vladislav Noskov ◽  
Rinat Galeev ◽  
Evgeniy Bogatyrev ◽  
Kirill Ignatkov ◽  
Kirill Shaidurov

A mathematical model of an autodyne oscillator with a combined amplitude-frequency modulation, which is under the influence of its own radiation reflected from the target, is developed. The main relations are obtained for analyzing the autodyne response of a single-circuit oscillator depending on the delay time of the radiation reflected from the target with an arbitrary law of simultaneous amplitude and frequency modulation. The characteristics of the amplitude selection of signals, as well as their temporal and spectral characteristics, are calculated for harmonic amplitude-frequency modulation. The features of signal formation are established for various values of the amplitude and frequency modulation parameters and the feedback parameter of the “oscillator—target” autoparametric system. The results of experimental studies, performed on a Tigel-0.8M hybrid-integrated Ka-band oscillator module with a Gann mesa-planar diode, confirmed the findings of the theoretical analysis.


2020 ◽  
Vol 125 ◽  
pp. 114-127
Author(s):  
Madhu R. Kamble ◽  
Hemlata Tak ◽  
Hemant A. Patil

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