direct-current machine

简明释义

直流电机

英英释义

例句

1.In the lab, we conducted experiments to analyze the performance of a direct-current machine under different loads.

在实验室，我们进行了实验，以分析在不同负载下直流电机的性能。

2.The direct-current machine is widely used in electric vehicles for its efficient power conversion.

由于高效的电能转换，直流电机广泛应用于电动车。

3.Maintenance of a direct-current machine requires regular inspection of brushes and commutators.

对直流电机的维护需要定期检查刷子和换向器。

4.A direct-current machine can easily be controlled for speed and torque, making it ideal for many applications.

直流电机可以很容易地控制速度和扭矩，这使其适用于许多应用。

5.The design of a direct-current machine includes components like the armature, stator, and field windings.

直流电机的设计包括电枢、定子和励磁绕组等组件。

作文

The concept of a direct-current machine refers to a type of electrical machine that converts electrical energy into mechanical energy or vice versa, utilizing direct current (DC). These machines are widely used in various applications, from industrial machinery to small electronic devices. Understanding the working principle and applications of direct-current machines is essential for anyone involved in electrical engineering or related fields.Direct-current machines can be classified into two main types: direct-current motors and direct-current generators. A direct-current motor transforms electrical energy into mechanical energy, allowing it to drive various mechanical loads. For instance, these motors are commonly found in electric vehicles, fans, and conveyor belts, where precise control over speed and torque is required. On the other hand, a direct-current generator performs the opposite function, converting mechanical energy into electrical energy. This type of machine is often used in power generation systems, where it can provide a stable and controllable output.One of the significant advantages of direct-current machines is their ability to provide excellent speed control. Unlike alternating current (AC) machines, which may require complex control systems to manage speed, direct-current machines can easily adjust their speed by varying the input voltage. This feature makes them particularly suitable for applications where variable speed is essential, such as in robotics and automated manufacturing processes.Moreover, direct-current machines are known for their simplicity in design and operation. They typically consist of a rotor, stator, commutator, and brushes. The rotor, or armature, is where the electrical energy is converted into mechanical energy. The stator provides a magnetic field, while the commutator and brushes work together to ensure the current flows in the correct direction, maintaining a consistent rotation of the rotor. This straightforward construction makes direct-current machines easier to maintain and repair compared to their AC counterparts.However, direct-current machines also have some drawbacks. One of the most significant issues is the wear and tear of the brushes and commutator, which can lead to maintenance challenges and reduced lifespan. Additionally, they tend to be less efficient than AC machines at higher power levels, making them less suitable for large-scale applications. As a result, while direct-current machines are still prevalent, many industries are gradually shifting towards AC machines for larger power requirements.In conclusion, the direct-current machine plays a vital role in modern technology, providing reliable and efficient solutions for various applications. From powering small gadgets to driving large industrial equipment, understanding how these machines work and their advantages and disadvantages is crucial for engineers and technicians. As technology continues to evolve, the principles behind direct-current machines will remain relevant, ensuring their place in the future of electrical engineering and machinery design.

“直流机”的概念是指一种电气机器，它利用直流电（DC）将电能转换为机械能或反之。这些机器广泛应用于从工业机械到小型电子设备的各种应用中。理解“直流机”的工作原理和应用对于任何涉及电气工程或相关领域的人来说都是至关重要的。直流机可以分为两种主要类型：“直流电动机”和“直流发电机”。“直流电动机”将电能转化为机械能，使其能够驱动各种机械负载。例如，这些电动机通常在电动车、风扇和输送带中找到，它们需要精确控制速度和扭矩。另一方面，“直流发电机”执行相反的功能，将机械能转化为电能。这种类型的机器常用于发电系统中，可以提供稳定且可控的输出。“直流机”的一个显著优势是它们能够提供出色的速度控制。与可能需要复杂控制系统来管理速度的交流（AC）机器不同，“直流机器”可以通过改变输入电压轻松调整其速度。这一特性使它们特别适合于需要可变速度的应用，如机器人技术和自动化制造过程。此外，“直流机器”以其设计和操作的简单性而闻名。它们通常由转子、定子、换向器和刷子组成。转子或电枢是电能转化为机械能的地方。定子提供磁场，而换向器和刷子共同工作，确保电流朝正确方向流动，从而保持转子的持续旋转。这种简单的结构使得“直流机器”比其交流对应物更容易维护和修理。然而，“直流机器”也有一些缺点。最显著的问题之一是刷子和换向器的磨损，这可能导致维护挑战和使用寿命缩短。此外，在较高功率水平下，它们的效率往往低于交流机器，使其不太适合大规模应用。因此，尽管“直流机器”仍然普遍存在，但许多行业正在逐渐转向交流机器以满足更大的功率需求。总之，“直流机”在现代技术中发挥着至关重要的作用，为各种应用提供可靠和高效的解决方案。从为小型设备供电到驱动大型工业设备，理解这些机器的工作原理及其优缺点对工程师和技术人员至关重要。随着技术的不断发展，“直流机器”背后的原理将保持相关性，确保它们在电气工程和机械设计的未来中占有一席之地。