open-loop control system

简明释义

开环控制系统

英英释义

例句

1.A simple toaster operates as an open-loop control system, where the user sets the timer, and the toaster heats the bread for that duration without sensing the toast's color.

一个简单的烤面包机作为一个开环控制系统工作，用户设置定时器，烤面包机在该时间内加热面包，而不感知面包的颜色。

2.An electric fan operating at a constant speed without feedback from the room temperature is an example of an open-loop control system.

一台以恒定速度运行而没有房间温度反馈的电风扇是一个开环控制系统的例子。

3.The irrigation system in a garden can be designed as an open-loop control system, where water is applied for a fixed duration regardless of soil moisture levels.

花园中的灌溉系统可以设计为一个开环控制系统，在固定时间内施水，而不考虑土壤湿度水平。

4.In a washing machine, a basic cycle that runs for a set time is an example of an open-loop control system because it does not adjust based on the cleanliness of the clothes.

在洗衣机中，运行固定时间的基本洗涤周期是一个开环控制系统的例子，因为它不会根据衣物的清洁程度进行调整。

5.A microwave oven that cooks food for a predetermined time without checking if the food is heated evenly represents an open-loop control system.

一台微波炉在预定时间内加热食物而不检查食物是否均匀加热，代表了一个开环控制系统。

作文

An open-loop control system is a type of control system that operates without feedback. In this system, the input is processed to produce an output, but there is no mechanism to measure the output and adjust the input accordingly. This concept can be understood better by considering everyday examples. For instance, when you set your home heating system to a specific temperature, it will run until that temperature is reached, regardless of whether the room actually reaches that temperature or not. This is a classic example of an open-loop control system (开环控制系统), where the system does not take into account the actual conditions of the environment after the input is set.The simplicity of open-loop control systems makes them attractive for many applications. They are often used in situations where the relationship between input and output is well understood and predictable. For instance, a toaster is an excellent example of this system in action. When you push down the lever, the toaster heats the bread for a predetermined amount of time. There is no sensor to check the browning level of the toast; instead, the user has to rely on their judgment of how long to toast the bread based on experience. This lack of feedback can lead to inconsistent results, but in many scenarios, the simplicity and low cost of open-loop control systems outweigh these drawbacks.However, the limitations of open-loop control systems become apparent in more complex applications. If the system is subject to disturbances or changes in the environment, the lack of feedback can result in poor performance. For example, consider a sprinkler system designed to water a garden. If the weather changes unexpectedly and it rains, the open-loop control system will continue to operate as programmed, potentially overwatering the plants. In contrast, a closed-loop system would have sensors to detect the moisture level in the soil and adjust the watering schedule accordingly.In industrial automation, open-loop control systems can be found in processes where precision is not critical. For example, a conveyor belt may operate continuously to move products from one location to another without needing to monitor the exact position of each item. This can be effective for simple tasks but may require additional systems to ensure quality control and efficiency.In conclusion, while open-loop control systems offer simplicity and cost-effectiveness, they also come with significant limitations due to their lack of feedback mechanisms. Understanding where and how to use these systems is crucial for engineers and designers. They must weigh the benefits against the potential for error and inefficiency in various applications. As technology continues to advance, the integration of feedback systems is becoming more common, leading to more sophisticated and reliable control systems. However, the fundamental principles of open-loop control systems remain relevant, especially in applications where simplicity is paramount and precise control is not necessary.

开环控制系统是一种不依赖反馈的控制系统。在该系统中，输入被处理以产生输出，但没有机制来测量输出并相应地调整输入。通过考虑日常例子，可以更好地理解这一概念。例如，当您将家庭供暖系统设置为特定温度时，它会运行直到达到该温度，无论房间是否实际达到该温度。这是经典的开环控制系统（open-loop control system）示例，其中系统在设定输入后不考虑环境的实际条件。开环控制系统的简单性使其在许多应用中具有吸引力。它们通常用于输入和输出之间的关系被很好理解和可预测的情况。例如，烤面包机是这一系统运作的一个极好例子。当您按下杠杆时，烤面包机会在预定时间内加热面包。没有传感器来检查吐司的上色程度；相反，用户必须根据经验依靠自己的判断来决定烤面包的时间。这种缺乏反馈可能导致结果不一致，但在许多情况下，开环控制系统的简单性和低成本超过了这些缺陷。然而，开环控制系统的局限性在更复杂的应用中显而易见。如果系统受到干扰或环境变化，缺乏反馈可能导致性能不佳。例如，考虑一个设计用于浇水花园的喷洒系统。如果天气意外变化并下雨，开环控制系统将继续按计划运行，可能会过度浇水植物。相比之下，闭环系统将有传感器来检测土壤中的湿度水平，并相应地调整浇水计划。在工业自动化中，开环控制系统可以在精度不关键的过程中找到。例如，传送带可能会连续运行，以将产品从一个位置移动到另一个位置，而无需监控每个项目的确切位置。这对于简单任务是有效的，但可能需要额外的系统来确保质量控制和效率。总之，尽管开环控制系统提供了简单性和成本效益，但由于缺乏反馈机制，它们也带来了显著的局限性。理解这些系统的使用场合和方式对工程师和设计师至关重要。他们必须权衡各种应用中潜在的错误和低效率与收益之间的关系。随着技术的不断进步，反馈系统的集成变得越来越普遍，从而导致更复杂和可靠的控制系统。然而，开环控制系统的基本原理仍然相关，特别是在简单性至关重要且不需要精确控制的应用中。