commutator

简明释义

英[ˈkɒmjuteɪtə(r)]美[ˈkɑːmjuteɪtər]

n. [电] 换向器；整流器

英英释义

单词用法

同义词

反义词

例句

1.The commutator generated by BMO functions and singular integral operators with homogeneous kernel is studied.

本文研究带有齐性核的奇异积分算子与BMO函数的交换子。

2.It usually appears at the RF, blade passage frequency and commutator brush frequency, and their higher harmonics.

它通常出现在射频，叶片通过频率和整流子刷频率，其高次谐波。

3.Usage: suitable for pressing of commutator, bearing and shaft into iron core.

用途：适用换向器、轴承、铁芯入轴等压装。

4.The preventive maintenance for the commutator of the DC machine is of great importance.

大容量直流电机是轧钢车间的主体设备，对其换向器的维护工作更显得重要。

5.Repair or replace the electric brush; clean the commutator surface by abrasive paper and blow it clean.

修理或调换电刷，用木砂纸清理整流子表面，并吹净。

6.The no-brush direct current electromotor is a kind of direct current electromotor without any mechanical commutator or brush.

无刷直流电机是一种没有机械换向器和电刷的直流电机。

7.The function of the commutator is to reverse the direction of current in the motor.

在电动机中，换向器的功能是反转电流的方向。

8.In a DC motor, the commutator plays a crucial role in maintaining rotational motion.

在直流电动机中，换向器在维持旋转运动中起着至关重要的作用。

9.A damaged commutator can lead to inefficient motor performance.

换向器损坏可能导致电动机性能低下。

10.The design of the commutator affects the overall efficiency of the electrical machine.

换向器的设计影响电气机器的整体效率。

11.When troubleshooting a generator, check the commutator for wear and tear.

在排查发电机故障时，检查一下换向器是否磨损。

作文

In the field of electrical engineering, one of the critical components that facilitate the functioning of direct current (DC) motors and generators is the commutator. A commutator is a mechanical switch that reverses the direction of current in a coil of wire, ensuring that the torque produced by the motor remains consistent. This component plays a vital role in converting alternating current (AC) into direct current (DC), which is essential for many applications in our daily lives. The basic structure of a commutator consists of a segmented ring attached to the rotor of the motor. Each segment of the commutator is connected to one of the windings of the rotor. As the rotor spins, the segments come into contact with carbon brushes, which are fixed in place and conduct electricity from the power source to the rotor. The design of the commutator ensures that as the rotor turns, the direction of the current flowing through the windings is reversed, allowing for continuous rotation in one direction. Understanding the function of a commutator is crucial for anyone involved in designing or maintaining electric motors. Without this component, the motor would not be able to produce the rotational motion necessary for its operation. In fact, the efficiency and performance of DC motors can often be attributed to the quality and design of the commutator. Engineers must carefully consider factors such as material selection, wear resistance, and thermal conductivity when designing a commutator to ensure optimal performance and longevity. Moreover, the commutator is not without its challenges. One of the significant issues faced by engineers is the wear and tear that occurs over time due to friction between the brushes and the commutator. This wear can lead to increased resistance, overheating, and ultimately failure of the motor if not addressed. To mitigate these issues, regular maintenance and inspection of the commutator are necessary. Innovations in materials and design have also led to the development of brushless motors, which eliminate the need for a commutator, thus reducing maintenance requirements and increasing efficiency. In conclusion, the commutator is an essential component in the realm of electrical engineering, particularly in the operation of DC motors and generators. Its ability to reverse the direction of current flow enables these machines to function effectively and efficiently. Understanding the mechanics and importance of a commutator not only aids engineers in their designs but also highlights the intricate workings of the technology we often take for granted. As we continue to advance in technology, the role of the commutator may evolve, but its fundamental purpose in enabling electrical devices to operate will remain significant. Thus, appreciating the commutator and its contributions to modern engineering is vital for anyone interested in the field of electrical systems.

在电气工程领域，促进直流电（DC）电动机和发电机功能的关键组件之一是换向器。换向器是一个机械开关，它在电线圈中反转电流的方向，从而确保电动机产生的扭矩保持一致。这个组件在将交流电（AC）转换为直流电（DC）方面发挥着至关重要的作用，这对我们日常生活中的许多应用都是必不可少的。 换向器的基本结构由一个分段环组成，连接到电动机的转子上。换向器的每个段都与转子的一个绕组相连。当转子旋转时，这些段与固定的碳刷接触，碳刷从电源导电到转子。换向器的设计确保了当转子转动时，流经绕组的电流方向被反转，从而允许转子持续朝一个方向旋转。 理解换向器的功能对任何参与电动机设计或维护的人来说都是至关重要的。没有这个组件，电动机就无法产生其操作所需的旋转运动。事实上，直流电动机的效率和性能往往归因于换向器的质量和设计。工程师在设计换向器时必须仔细考虑材料选择、耐磨性和热导率等因素，以确保最佳的性能和使用寿命。 此外，换向器并非没有挑战。工程师面临的一个重大问题是，由于刷子与换向器之间的摩擦，随着时间的推移会发生磨损。这种磨损可能导致电阻增加、过热，最终导致电动机故障。因此，定期维护和检查换向器是必要的。材料和设计的创新也导致了无刷电动机的发展，消除了对换向器的需求，从而减少了维护要求并提高了效率。 总之，换向器是电气工程领域中一个不可或缺的组件，特别是在直流电动机和发电机的操作中。它反转电流流动方向的能力使这些机器能够有效且高效地运作。理解换向器的机制和重要性不仅有助于工程师进行设计，还突显了我们常常忽视的技术的复杂运作。随着技术的不断进步，换向器的角色可能会演变，但其在电气设备操作中发挥的基本作用仍将具有重要意义。因此，欣赏换向器及其对现代工程的贡献对于任何对电气系统感兴趣的人来说都是至关重要的。