duty ratio

简明释义

占空因数

英英释义

例句

1.The engineer calculated the duty ratio to optimize the performance of the power converter.

工程师计算了duty ratio以优化电源转换器的性能。

2.To achieve the desired brightness, the LED driver must maintain a specific duty ratio.

为了达到所需的亮度，LED驱动器必须保持特定的duty ratio。

3.The duty ratio is critical for determining the efficiency of a switching power supply.

对于确定开关电源的效率，duty ratio是至关重要的。

4.A lower duty ratio can lead to reduced heat generation in electronic circuits.

较低的duty ratio可以减少电子电路中的热量产生。

5.In PWM (Pulse Width Modulation) applications, adjusting the duty ratio changes the output voltage.

在PWM（脉宽调制）应用中，调整duty ratio会改变输出电压。

作文

In the field of engineering and electronics, the term duty ratio is often used to describe the proportion of time that a system is in an active state compared to the total time of operation. This concept is particularly significant in the design and analysis of pulse-width modulation (PWM) systems, where controlling the amount of power delivered to a load is crucial. The duty ratio is defined mathematically as the ratio of the 'on' time to the total period of the signal. For instance, if a PWM signal is on for 2 milliseconds and off for 8 milliseconds, the total period is 10 milliseconds, resulting in a duty ratio of 0.2 or 20%. This means that the signal is active for 20% of the time and inactive for 80%. Understanding the duty ratio is essential for various applications, including motor control, light dimming, and heating systems. In motor control, for example, adjusting the duty ratio can change the speed of a motor. A higher duty ratio allows more current to flow to the motor, increasing its speed, while a lower duty ratio reduces the speed by allowing less current. Similarly, in lighting applications, varying the duty ratio can control brightness levels. A light bulb that is powered with a higher duty ratio will shine brighter than one powered with a lower duty ratio. Moreover, the duty ratio has implications for energy efficiency. In many modern devices, optimizing the duty ratio can lead to significant energy savings. For instance, in heating systems, maintaining an optimal duty ratio ensures that the system operates efficiently without wasting energy. By keeping the duty ratio at an appropriate level, systems can achieve desired temperatures faster and maintain those temperatures without excessive energy expenditure. The importance of the duty ratio also extends to telecommunications and signal processing. In these fields, the duty ratio can affect the quality and reliability of transmitted signals. A properly adjusted duty ratio can minimize distortion and optimize bandwidth usage, which is crucial for maintaining clear communication channels. In conclusion, the concept of duty ratio plays a vital role in various engineering disciplines. Its ability to influence performance, efficiency, and functionality makes it a key parameter in designing and operating electronic systems. Whether in controlling motors, managing lighting, or optimizing energy use, understanding and manipulating the duty ratio is essential for achieving desired outcomes in technology and engineering. As technology continues to advance, the relevance of the duty ratio will only grow, making it a fundamental concept for engineers and technicians alike.

在工程和电子领域，术语duty ratio通常用于描述一个系统处于活动状态的时间与总操作时间的比例。这个概念在脉宽调制（PWM）系统的设计和分析中尤为重要，因为控制传递给负载的功率量至关重要。duty ratio在数学上被定义为“开启”时间与信号总周期的比率。例如，如果PWM信号开启2毫秒而关闭8毫秒，则总周期为10毫秒，从而导致duty ratio为0.2或20%。这意味着信号在20%的时间内处于活动状态，而在80%的时间内处于非活动状态。理解duty ratio对各种应用至关重要，包括电机控制、灯光调节和加热系统。例如，在电机控制中，调整duty ratio可以改变电机的速度。较高的duty ratio允许更多的电流流向电机，从而提高其速度，而较低的duty ratio则通过允许较少的电流来降低速度。同样，在照明应用中，改变duty ratio可以控制亮度水平。一个以较高duty ratio供电的灯泡将比一个以较低duty ratio供电的灯泡更亮。此外，duty ratio对能源效率也有影响。在许多现代设备中，优化duty ratio可以带来显著的节能效果。例如，在加热系统中，保持最佳的duty ratio可确保系统高效运行而不浪费能源。通过将duty ratio保持在适当的水平，系统可以更快地达到所需温度，并在不耗费过多能源的情况下维持这些温度。duty ratio的重要性还延伸到电信和信号处理领域。在这些领域，duty ratio会影响传输信号的质量和可靠性。适当调整的duty ratio可以最小化失真并优化带宽利用率，这对保持清晰的通信通道至关重要。总之，duty ratio的概念在各个工程学科中发挥着至关重要的作用。它对性能、效率和功能的影响使其成为设计和操作电子系统的关键参数。无论是在控制电机、管理照明还是优化能源使用方面，理解和操控duty ratio对于实现技术和工程中的预期结果都是必不可少的。随着技术的不断进步，duty ratio的相关性只会增加，使其成为工程师和技术人员共同关注的基本概念。