automatic frequency control

简明释义

自动频率控制

英英释义

例句

1.In telecommunications, automatic frequency control helps in reducing interference.

在电信中，自动频率控制有助于减少干扰。

2.With automatic frequency control, the drone can adjust its communication frequency automatically.

通过自动频率控制，无人机可以自动调整其通信频率。

3.Modern televisions often incorporate automatic frequency control for better picture quality.

现代电视通常采用自动频率控制以获得更好的画质。

4.The automatic frequency control system in the transmitter ensures consistent output.

发射器中的自动频率控制系统确保输出的一致性。

5.The radio receiver uses automatic frequency control to maintain a stable signal.

收音机接收器使用自动频率控制来保持信号稳定。

作文

Automatic Frequency Control (AFC) is a crucial technology used in various communication systems to maintain the stability and accuracy of frequency signals. In essence, AFC is a feedback mechanism that automatically adjusts the frequency of an oscillator to match the frequency of a received signal. This process ensures that the system can effectively demodulate the signal and minimize any potential errors caused by frequency drift. The concept of automatic frequency control (自动频率控制) is prevalent in radio broadcasting, satellite communications, and even in mobile phones, where maintaining a consistent frequency is vital for clear and reliable communication.In radio broadcasting, for instance, the transmitter sends out a signal at a specific frequency. However, due to various factors such as temperature changes or component aging, the frequency can drift slightly over time. If this drift is not corrected, the receiver may struggle to lock onto the intended signal, leading to poor audio quality or complete signal loss. By implementing automatic frequency control (自动频率控制), the system continuously monitors the frequency and makes necessary adjustments, ensuring that the transmitted signal remains within the desired parameters.Similarly, in satellite communications, AFC plays a vital role. Satellites orbiting the Earth must maintain precise frequencies to ensure effective communication with ground stations. Any deviation in frequency can lead to miscommunication or data loss. The integration of automatic frequency control (自动频率控制) systems allows satellites to adjust their frequencies in real-time, thereby enhancing the reliability of the communication link.Moreover, mobile phones utilize automatic frequency control (自动频率控制) to maintain a stable connection with the network. As users move around, their phones constantly switch between different cell towers, which may operate on varying frequencies. AFC helps in synchronizing the phone's internal oscillator with the frequency of the connected tower, ensuring smooth transitions and uninterrupted service.The importance of automatic frequency control (自动频率控制) extends beyond just communication systems. It is also applicable in other fields such as instrumentation and control systems. For example, in industrial applications, AFC can be employed in sensors and measurement devices to ensure accurate readings. If a sensor's frequency drifts, it can lead to incorrect measurements, which could have significant implications in processes like manufacturing or environmental monitoring. By utilizing automatic frequency control (自动频率控制), these devices can maintain their accuracy and reliability over time.In conclusion, automatic frequency control (自动频率控制) is an essential technology that enhances the performance and reliability of various systems across multiple industries. From radio broadcasting to satellite communications and mobile phones, AFC ensures that frequency signals remain stable, enabling effective communication and accurate measurements. As technology continues to evolve, the significance of automatic frequency control (自动频率控制) will only increase, making it a fundamental aspect of modern engineering and telecommunications.