parametric excitation

简明释义

参数激励

英英释义

例句

1.The researchers studied the effects of parametric excitation 参数激励 on the stability of the system.

研究人员研究了参数激励对系统稳定性的影响。

2.Engineers often utilize parametric excitation 参数激励 to enhance the performance of vibrational devices.

工程师们常常利用参数激励来提高振动设备的性能。

3.In mechanical systems, parametric excitation 参数激励 can lead to unexpected resonances.

在机械系统中，参数激励可能导致意外的共振现象。

4.The phenomenon of parametric excitation 参数激励 is commonly observed in nonlinear oscillators.

在非线性振荡器中，参数激励现象是常见的。

5.The study focused on how parametric excitation 参数激励 can amplify certain frequencies.

研究集中在参数激励如何放大某些频率。

作文

In the field of physics and engineering, the concept of parametric excitation plays a significant role in understanding dynamic systems. Parametric excitation refers to a phenomenon where the parameters of a system, such as its stiffness or mass, are varied with time, leading to an amplification of oscillations. This concept is essential in various applications, including mechanical systems, electrical circuits, and even biological systems. To illustrate this, consider a simple pendulum. If we were to periodically change the length of the pendulum arm, we could induce a state of parametric excitation. As the length varies, the natural frequency of the pendulum changes, which can result in larger oscillations if timed correctly. This principle can be applied to design systems that harness energy more efficiently or to create devices that can withstand greater forces without failure. One of the most famous examples of parametric excitation is seen in the field of engineering with the use of parametric amplifiers. These devices exploit the principles of parametric excitation to amplify signals without adding significant noise. By modulating the parameters of the circuit at specific frequencies, engineers can achieve high performance in communication systems, making them crucial for modern technologies like radio and telecommunications. In addition to engineering, parametric excitation has implications in the study of chaos and stability in dynamical systems. Researchers have found that introducing periodic variations in a system's parameters can lead to chaotic behavior under certain conditions. This insight helps scientists understand complex systems in nature, such as climate patterns or population dynamics in ecology. Moreover, parametric excitation is not limited to mechanical and electrical systems; it also appears in the realm of quantum mechanics. In quantum optics, for instance, parametric excitation is used to generate entangled photon pairs through a process called spontaneous parametric down-conversion. This technique is vital for advancing quantum computing and secure communication technologies. Understanding parametric excitation is crucial for engineers and scientists as they design systems that can adapt to changing conditions. It allows for the creation of resilient structures that can endure external disturbances, such as earthquakes or wind loads. Additionally, it opens up possibilities for innovative designs in various fields, including robotics, aerospace, and renewable energy. In conclusion, parametric excitation is a fascinating phenomenon with wide-ranging applications across multiple disciplines. By manipulating the parameters of a system, we can control its behavior and enhance its performance. As technology continues to advance, the principles of parametric excitation will undoubtedly play a critical role in shaping the future of engineering and science, leading to new discoveries and innovations that can benefit society as a whole.

在物理和工程领域，参数激励的概念在理解动态系统中扮演着重要角色。参数激励指的是一种现象，其中系统的参数（如刚度或质量）随时间变化，从而导致振荡的放大。这个概念在各种应用中至关重要，包括机械系统、电路，甚至生物系统。为了说明这一点，考虑一个简单的摆。如果我们定期改变摆臂的长度，我们可以引发一种参数激励状态。当长度变化时，摆的自然频率也会发生变化，如果时机掌握得当，可以导致更大的振荡。这一原理可以应用于设计能够更高效利用能量的系统，或创造能够承受更大力量而不发生故障的设备。参数激励最著名的例子之一是在工程领域使用的参数放大器。这些设备利用参数激励的原理来放大信号，而不会增加显著的噪声。通过在特定频率下调制电路的参数，工程师可以在通信系统中实现高性能，使其成为现代技术（如无线电和电信）中至关重要的一部分。除了工程，参数激励在混沌与动态系统稳定性研究中也有重要意义。研究人员发现，在某些条件下，引入周期性变化的系统参数可能导致混沌行为。这一见解帮助科学家理解自然中的复杂系统，例如气候模式或生态学中的种群动态。此外，参数激励不仅限于机械和电气系统；它在量子力学领域也有所体现。例如，在量子光学中，参数激励用于通过一种称为自发参数下转换的过程生成纠缠光子对。这一技术对于推进量子计算和安全通信技术至关重要。理解参数激励对工程师和科学家来说至关重要，因为它们设计的系统能够适应变化的条件。这使得创建能够承受外部干扰（如地震或风载荷）的韧性结构成为可能。此外，它还为机器人、航空航天和可再生能源等各个领域的创新设计打开了可能性。总之，参数激励是一个迷人的现象，具有广泛的跨学科应用。通过操控系统的参数，我们可以控制其行为并提高其性能。随着技术的不断进步，参数激励的原理无疑将在塑造未来工程和科学中发挥关键作用，导致新的发现和创新，造福整个社会。