dc machine

简明释义

直龙

英英释义

例句

1.The dc machine 直流电机 is widely used in electric vehicles due to its efficiency.

由于其高效性，dc machine 直流电机 被广泛应用于电动车中。

2.We need to replace the old dc machine 直流电机 with a more efficient model.

我们需要用更高效的型号替换掉旧的dc machine 直流电机。

3.A dc machine 直流电机 can be used as both a motor and a generator.

dc machine 直流电机 可以作为电动机和发电机使用。

4.The performance of a dc machine 直流电机 depends on its design and materials.

dc machine 直流电机 的性能取决于其设计和材料。

5.In our lab, we have several types of dc machines 直流电机 for experiments.

在我们的实验室里，我们有几种类型的dc machines 直流电机用于实验。

作文

The term dc machine refers to a type of electrical machine that converts direct current (DC) electrical energy into mechanical energy or vice versa. These machines are widely used in various applications, from small toys to large industrial machinery. Understanding the working principle and applications of dc machines is crucial for engineers and technicians in the field of electrical engineering. The basic components of a dc machine include the stator, rotor, commutator, and brushes. The stator is the stationary part of the machine, while the rotor is the rotating part. The commutator serves to reverse the direction of current flow through the rotor windings, ensuring that the torque produced is in a consistent direction. Brushes make contact with the commutator to supply current to the rotor. One of the key advantages of dc machines is their ability to provide a constant speed and torque under varying load conditions. This characteristic makes them ideal for applications such as electric vehicles, cranes, and conveyor systems. Furthermore, dc motors can be easily controlled by adjusting the voltage supplied to them, allowing for precise speed control. However, dc machines also have some drawbacks. They require regular maintenance due to wear and tear on the brushes and commutator. Additionally, they are generally less efficient than their alternating current (AC) counterparts, particularly in large-scale applications. Despite these limitations, dc machines continue to play a vital role in many sectors. In recent years, advancements in technology have led to the development of brushless dc machines, which eliminate the need for brushes and commutators, thus reducing maintenance requirements and increasing efficiency. These modern dc machines are becoming increasingly popular in applications such as robotics, aerospace, and renewable energy systems. In conclusion, the dc machine is an essential component in the world of electrical engineering. Its ability to convert electrical energy into mechanical energy efficiently makes it suitable for a wide range of applications. As technology continues to evolve, the future of dc machines looks promising, with innovations paving the way for more efficient and reliable machines that can meet the demands of modern society.

术语dc machine指的是一种电气机器，它将直流（DC）电能转换为机械能，或反之亦然。这些机器在各种应用中被广泛使用，从小玩具到大型工业机械。理解dc machines的工作原理和应用对于电气工程领域的工程师和技术人员至关重要。dc machine的基本组成部分包括定子、转子、换向器和刷子。定子是机器的静止部分，而转子是旋转部分。换向器用于逆转电流在转子绕组中的流动方向，确保产生的扭矩始终朝一个方向。刷子与换向器接触，为转子提供电流。dc machines的一个主要优点是它们能够在不同负载条件下提供恒定的速度和扭矩。这一特性使它们非常适合电动车、起重机和输送系统等应用。此外，通过调整提供给它们的电压，可以轻松控制dc motors的速度，从而实现精确的速度控制。然而，dc machines也有一些缺点。由于刷子和换向器的磨损，它们需要定期维护。此外，与其交流电（AC）对应物相比，它们在大规模应用中通常效率较低。尽管存在这些局限性，dc machines在许多行业中仍然发挥着重要作用。近年来，技术的进步导致无刷dc machines的发展，这消除了对刷子和换向器的需求，从而减少了维护要求并提高了效率。这些现代dc machines在机器人技术、航空航天和可再生能源系统等应用中越来越受欢迎。总之，dc machine是电气工程世界中的一个重要组成部分。它高效地将电能转换为机械能，使其适合广泛的应用。随着技术的不断发展，dc machines的未来看起来充满希望，创新为满足现代社会需求的更高效、更可靠的机器铺平了道路。