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List of contents of this article:

• 1, What is a process control system and what are its advantages?
• 2, What is process system and what does it have with unit operation
• 3、 What are the links in the process control system and what is the function of each?

What is a process control system and what are its advantages?

1. Process control system (PCS) and distributed control system (DCS) are two commonly used control systems in the field of industrial automation. They have some differences in design and application. Control architecture: The control architectures of PCS and DCS are different.

2. Process control is also known as on-site control. Its advantages are timely detection of problems and deviations, timely correction of problems and deviations, and timely stop loss. Its main disadvantage is that it is easy to interfere with the process or activity and affect the efficiency.

3. PCS stands for ProcessControlSystem, which means "process control system". The advantages of fully integrated automation are not only in the design and engineering stages, but also in the assembly and debugging stages and operation and maintenance stages, especially unified data management, communication and configuration.

4. Process control system refers to an automatic control system that ensures that the parameters of the production process are controlled as the controlled quantity and make it close to the given value or maintain it within a given range. The main parameters of the characterization process are temperature, pressure, flow rate, liquid level, composition, concentration, etc.

5. The general process control system usually adopts the form of feedback control, which is the main method of process control. Process control has a wide range of applications in petroleum, chemical industry, electric power, metallurgy and other sectors. In the 1950s, process control was mainly used to keep some parameters in the production process unchanged, so as to ensure stable output and quality.

6. The main characteristics of process control are: complex control objects and diverse control requirements; rich control schemes; control objects are mostly real-time process parameters, and most of them are continuous control;Fixed value control is a major form of control of process control; the process control system is composed of standardized process detection control instruments.

What is a process system and what is it related to unit operation

1. Unit operation refers to the crushing, conveying, heating, cooling, mixing and separation of materials in the chemical industry and other process industries. It is a general term for a series of basic operations that make materials undergo the expected physical changes.

2. It is the product of the combination of system engineering methods and the two branches of disciplines, unit operation and chemical reaction engineering. Process dynamic characteristics: In order to maintain the rationality and optimization of the operation, the process dynamic characteristics are also an important part of chemical engineering.

3、Process control system (PCS) and Hearthstone arena class win rates redditdistributed control system (DCS) are two commonly used control systems in the field of industrial automation. They have some differences in design and application. Control architecture: The control architectures of PCS and DCS are different.

4. Process control system refers to an automatic control system that ensures that the parameters of the production process are controlled as the controlled quantity and make it close to the given value or maintain it within a given range. The main parameters of the characterization process are temperature, pressure, flow rate, liquid level, composition, concentration, etc.

5. Computer process control system refers to a system composed of the controlled object, a measurement transmission device, a computer and an executive device to achieve closed-loop control of the production process. Using computers for process control systems is called computer process control systems.

6. The change of the state of the thermodynamic system is called the process.From a macro perspective, there are two ways to change the state of the system: one is to make the system and the outside world exchange heat; the other is to make the system work on the outside world or the outside world work on the system.

What are the links in the process control system and what is the function of each?

1. Function: 1 Scheduling;2 Operation mode determination; 3 Quality control; 4 Feedback control (automatic adjustment) and sequence control; 5 Prevention and repair of faults. Characteristics of process control system: Characteristics of industrial process control system: composed of process detection, transmission and control instruments, execution devices, etc.

2. Actuator: Actuator, also known as actuator, mostly takes the form of valves to control the flow rate and flow rate of various gases or liquids, which is an important part of the process control system.

3. First: The automatic control system is generally composed of four links: the object (the controlled process), the controller, the transmitter and the regulating valve; Second: The automatic control system is generally a closed-loop (or open-loop) control system composed of sensors, regulators, actuators and controlled objects.