self excitation

简明释义

自励

英英释义

例句

1.The self excitation 自激 mechanism allows for better voltage regulation in electrical machines.

该自激机制允许电气机器更好地进行电压调节。

2.The phenomenon of self excitation 自激 is crucial in understanding how certain generators work.

理解某些发电机工作的关键在于自激现象。

3.The motor operates on the principle of self excitation 自激, allowing it to generate its own magnetic field.

该电动机的工作原理是基于自激，使其能够产生自身的磁场。

4.By utilizing self excitation 自激, engineers can improve the efficiency of power systems.

通过利用自激，工程师可以提高电力系统的效率。

5.In some circuits, self excitation 自激 can lead to instability if not properly controlled.

在某些电路中，自激如果没有得到适当控制，可能会导致不稳定。

作文

In the realm of physics and engineering, the concept of self excitation is a fascinating phenomenon that plays a crucial role in various systems. Self excitation refers to the process where a system generates its own energy or feedback without needing external input. This can be observed in many natural and artificial systems, such as electrical circuits, mechanical systems, and even biological organisms. Understanding self excitation is essential for engineers and scientists as it helps them design more efficient systems and predict their behavior under different conditions.One of the most common examples of self excitation can be found in generators. In an electrical generator, self excitation occurs when the machine's output voltage feeds back into the field winding, allowing the generator to maintain a stable output without requiring constant external power. This feedback loop creates a self-sustaining cycle, where the generator can operate independently once it reaches a certain threshold of output. This characteristic is particularly useful in remote locations where access to external power sources is limited.Another interesting application of self excitation is in the field of oscillators. An oscillator is a device that produces a periodic signal, and many oscillators rely on self excitation to function. For instance, in a quartz crystal oscillator, the crystal vibrates at a specific frequency due to the piezoelectric effect. The vibrations generate an electric signal that is fed back into the circuit, reinforcing the oscillation. This self excitation allows the oscillator to maintain a stable frequency, which is critical for applications such as clocks, radios, and communication devices.In biological systems, self excitation can be seen in the behavior of neurons. Neurons can exhibit self excitation through the release of neurotransmitters that stimulate their own activity. This mechanism is vital for processes such as learning and memory, where certain neural pathways become reinforced over time. The self excitation of neurons ensures that important signals are amplified, leading to more robust responses in the brain.However, self excitation is not always beneficial. In some cases, it can lead to instability and chaos. For example, in control systems, excessive self excitation can result in oscillations that cause the system to become unstable. Engineers must carefully design feedback loops to ensure that self excitation remains within acceptable limits, preventing undesirable outcomes.In conclusion, the concept of self excitation is integral to understanding the behavior of various systems, both natural and artificial. Whether it is in electrical generators, oscillators, or biological neurons, self excitation demonstrates the ability of systems to sustain themselves through internal feedback mechanisms. While it provides numerous advantages, it also poses challenges that require careful consideration in design and implementation. As technology continues to advance, the study of self excitation will remain an important area of research, offering insights into creating more efficient and resilient systems.

在物理和工程领域，自激励的概念是一个迷人的现象，在各种系统中发挥着至关重要的作用。自激励指的是一个系统在没有外部输入的情况下生成自身能量或反馈的过程。这可以在许多自然和人工系统中观察到，例如电路、机械系统甚至生物有机体。理解自激励对工程师和科学家来说至关重要，因为它帮助他们设计更高效的系统，并预测在不同条件下的行为。自激励的一个常见例子可以在发电机中找到。在电动发电机中，当机器的输出电压反馈到场绕组时，就会发生自激励，这使得发电机能够在不需要持续外部电源的情况下保持稳定的输出。这个反馈回路创造了一个自我维持的循环，一旦发电机达到一定的输出阈值，它就可以独立运行。这一特性在偏远地区尤其有用，因为在这些地方访问外部电源的机会有限。自激励的另一个有趣应用是在振荡器领域。振荡器是一种产生周期性信号的设备，许多振荡器依赖于自激励来工作。例如，在石英晶体振荡器中，晶体由于压电效应以特定频率振动。振动产生的电信号反馈到电路中，增强了振荡。这种自激励使振荡器能够保持稳定的频率，这对时钟、收音机和通信设备等应用至关重要。在生物系统中，自激励可以在神经元的行为中看到。神经元可以通过释放刺激自身活动的神经递质来表现出自激励。这一机制对学习和记忆等过程至关重要，在这些过程中，某些神经通路随着时间的推移而得到强化。神经元的自激励确保重要信号被放大，从而导致大脑中更强烈的反应。然而，自激励并不总是有益的。在某些情况下，它可能导致不稳定和混沌。例如，在控制系统中，过度的自激励可能导致振荡，使系统变得不稳定。工程师必须仔细设计反馈回路，以确保自激励保持在可接受的范围内，从而防止不良后果。总之，自激励的概念对于理解各种系统的行为，无论是自然的还是人工的，都是不可或缺的。无论是在电动发电机、振荡器还是生物神经元中，自激励都展示了系统通过内部反馈机制自我维持的能力。虽然它提供了许多优势，但也带来了需要在设计和实施中认真考虑的挑战。随着技术的不断进步，自激励的研究将继续是一个重要的研究领域，为创建更高效和更具韧性的系统提供见解。