在奇怪的非混乱的吸引力下,准零刚度能量收割器的能量
Prakash Duraisamy1, Dianavinnarasi Joseph2, Suresh Kumarasamy3,4
1Centre for Mechanical Vibration Studies, Easwari Engineering College, Chennai 600089, Tamil Nadu, India.
Chaos (Woodbury, N.Y.)
|September 22, 2025
概括
研究人员在近周期激发下在近零刚度能量收割机 (QZEH) 中发现了一个新的动态域. 这种模式,具有一个奇怪的非混乱的吸引力,显示了比混乱运动更高的能量收获效率,推进了能量提取技术.
科学领域:
- 非线性动力学是一种非线性动力学.
- 收集能源的技术 收集能源的技术
- 机械振动 - 机械振动
背景情况:
- 非线性能量收获器,包括近零刚度能量收获器 (QZEH) 和可视化系统,提供更广泛的频率操作来捕获来自不规则来源的能量.
- 这些系统可以表现出复杂的行为,并且在准周期强迫下保持稳定的状态,由于非线性动态和不相称的频率,会带来重大挑战.
研究的目的:
- 在近周期激发下研究QZEH系统的动态行为和能量采集潜力.
- 识别和描述超越传统周期性或混乱状态的新动态模式.
- 为了评估QZEH系统在具有添加噪声的现实条件下的性能稳定性.
主要方法:
- 使用数值模拟来分析受到准周期强迫的QZEH系统.
- 该研究描述了不同的动态模式,重点关注一种奇怪的非混乱吸引力的出现.
- 研究了添加式白噪声对系统动态和能源采集效率的影响.
主要成果:
- 在准周期性激发下,发现了一种新的动态域,其特点是奇怪的非混乱的吸引力.
- 这种奇怪的非混乱的吸引力模式显示,与混乱运动相比,能量收集效率明显更高.
- 虽然增加噪声强度减少了奇怪的非混乱的吸引器的盆地,但在单个吸引器系统中,能量收集性能保持稳定.
结论:
- 这些发现挑战了传统的假设,揭示了在一个奇怪的非混乱的吸引力系统中更高的能量收集效率.
- 这一发现为通过利用非传统的动态行为来优化能源收获器开辟了新的途径.
- 在噪音下,QZEH系统在能量采集性能方面表现出强大,特别是在单引力状态下,突出其实际潜力.
相关概念视频
01:23Energy in Simple Harmonic Motion
12.4K
To determine the energy of a simple harmonic oscillator, consider all the forms of energy it can have during its simple harmonic motion. According to Hooke's Law, the energy stored during the compression/stretching of a string in a simple harmonic oscillator is potential energy. As the simple harmonic oscillator has no dissipative forces, it also possesses kinetic energy. In the presence of conservative forces, both energies can interconvert during oscillation, but the total energy remains...
12.4K
01:14Energy Diagrams - I
5.6K
The dynamics of a mechanical system can be easily understood by interpreting a potential energy diagram. Since energy is a scalar quantity, the interpretation of the dynamics of the system becomes even simpler.
Take the example of a skater on a parabolic ramp. The potential energy at different points along the ramp will be proportional to the height of the ramp, which varies quadratically with the horizontal position on the ramp. As the skater moves down the ramp from the highest position,...
Take the example of a skater on a parabolic ramp. The potential energy at different points along the ramp will be proportional to the height of the ramp, which varies quadratically with the horizontal position on the ramp. As the skater moves down the ramp from the highest position,...
5.6K
01:17Problem Solving: Energy in Simple Harmonic Motion
2.1K
Simple harmonic motion (SHM) is a type of periodic motion in time and position, in which an object oscillates back and forth around an equilibrium position with a constant amplitude and frequency. In SHM, there is a continuous exchange between the potential and kinetic energy, which results in the oscillation of the object.
Consider the spring in a shock absorber of a car. The spring attached to the wheel executes simple harmonic motion while the car is moving on a bumpy road. The force on the...
Consider the spring in a shock absorber of a car. The spring attached to the wheel executes simple harmonic motion while the car is moving on a bumpy road. The force on the...
2.1K
01:10Energy Diagrams - II
11.8K
Energy diagrams are important to understand the dynamics of a system. The topology of an energy diagram helps illustrate the equilibrium points of the system.
The point in the energy diagram at which the system’s potential energy is the lowest is known as the local minima. The system tends to stay in this position indefinitely unless acted upon by a net force. The slope of the potential energy diagram at the local minima is zero, indicating that zero net force is acting on the system. The...
The point in the energy diagram at which the system’s potential energy is the lowest is known as the local minima. The system tends to stay in this position indefinitely unless acted upon by a net force. The slope of the potential energy diagram at the local minima is zero, indicating that zero net force is acting on the system. The...
11.8K
01:07Damped Oscillations
6.8K
In the real world, oscillations seldom follow true simple harmonic motion. A system that continues its motion indefinitely without losing its amplitude is termed undamped. However, friction of some sort usually dampens the motion, so it fades away or needs more force to continue. For example, a guitar string stops oscillating a few seconds after being plucked. Similarly, one must continually push a swing to keep a child swinging on a playground.
Although friction and other non-conservative...
Although friction and other non-conservative...
6.8K
01:16Potential-Energy Criterion for Equilibrium
917
Potential energy or potential function plays an essential role in determining the stability of a mechanical system. If a system is subjected to both gravitational and elastic forces, the potential function of the system can be expressed as the algebraic sum of gravitational and elastic potential energy. If the system is in equilibrium and is displaced by a small amount, then the work done on the system equals the negative of the change in the system's potential energy from the initial to the...
917