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2024年4月13日发(作者：程序失控)
流程管控 过程监督
## Process Control and Process Monitoring.
Process Control.
Process control is the use of feedback loops to
maintain a process at a desired setpoint. The feedback loop
consists of a sensor, a controller, and an actuator. The
sensor measures the process variable and sends the signal
to the controller. The controller compares the process
variable to the setpoint and generates an error signal. The
error signal is sent to the actuator, which adjusts the
input to the process to reduce the error.
Process control is used in a wide variety of industries,
including manufacturing, chemical processing, and power
generation. It is used to control a variety of process
variables, such as temperature, pressure, flow, and level.
Process control systems can be classified as either
open-loop or closed-loop. Open-loop systems do not use
feedback to control the process. Closed-loop systems use
feedback to control the process. Closed-loop systems are
more accurate and stable than open-loop systems.
Process Monitoring.
Process monitoring is the use of sensors and
instrumentation to monitor the operation of a process. The
data from the sensors and instrumentation is used to track
the process variables and identify any problems. Process
monitoring is used to ensure that the process is operating
safely and efficiently.
Process monitoring systems can be classified as either
passive or active. Passive systems only collect data.
Active systems collect data and also take action to correct
any problems. Active systems are more expensive than
passive systems, but they can provide a higher level of
protection.
### Benefits of Process Control and Process Monitoring.
Process control and process monitoring can provide a
number of benefits, including:
Increased safety.
Improved efficiency.
Reduced costs.
Improved product quality.
Reduced environmental impact.
## 工艺控制和过程监控。
工艺控制。
工艺控制是指使用反馈回路将工艺维持在期望设定点的方法。
反馈回路包括传感器、控制器和执行器。传感器测量工艺变量并将
信号发送给控制器。控制器将工艺变量与设定点进行比较并生成误
差信号。误差信号被发送到执行器，执行器调整输入到过程以减少
误差。
工艺控制被广泛用于包括制造、化工加工和发电在内的各种行
业。用于控制各种工艺变量，例如温度、压力、流量和液位。
工艺控制系统可分为开环或闭环。开环系统不使用反馈来控制
过程。闭环系统使用反馈来控制过程。闭环系统比开环系统更准确、
更稳定。
过程监控。
过程监控是使用传感器和仪器监视过程操作。来自传感器和仪
器的数据用于跟踪工艺变量并识别任何问题。过程监控用于确保工
艺安全有效地运行。
过程监控系统可分为被动或主动。被动系统仅收集数据。主动
系统收集数据并采取措施纠正任何问题。主动系统比被动系统更昂
贵，但它们可以提供更高的保护级别。
### 工艺控制和过程监控的好处。
工艺控制和过程监控可以提供许多好处，包括：
提高安全性。
提高效率。
降低成本。
提高产品质量。
减少环境影响。
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