ALSTOM模块SDK-C0147 控制电源

ALSTOM模块SDK-C0147 控制电源

ALSTOM模块SDK-C0147 控制电源

ALSTOM模块SDK-C0147 控制电源备件使用通常包括信号或命令/信息在系统的不同层之间的传输，以及作为决策结果的控制动作的计算。术语DCS代表分布式控制系统。它们以前被称为分布式数字控制系统（DDCS），这意味着所有DCS都是数字控制系统。它们使用数字编码和过程信息和命令的传输。

如今，分布式控制系统不仅用于所有高级控制策略，还用于低级控制回路。用于实现自动过程控制的仪器已经经历了一个进化过程，并且今天仍在进化。一开始，工厂使用本地的大型气动控制器；这些后来被小型化并集中在控制面板和控制台上。

当引入模拟电子仪器时，它们的外观几乎没有变化。过程控制计算机的应用导致了位于同一控制室的传统模拟和直接数字控制（DDC）设备的混合。这种设备组合不仅笨重，而且相当不灵活，因为控制配置的改变需要改变电线的布线。

这种安排在20世纪70年代被分布式控制系统所取代。DCS控制器在地理上和功能上分布在整个工厂，它们之间以及与操作员终端、监督终端进行通信，以执行大型工厂/过程的所有必要控制功能。控制范围于其分布的工厂部分。

DCS适用于涉及大量连续控制回路、特殊控制功能、过程变量和警报的工厂。大多数分布式控制系统架构的设计和布局方式通常相似。操作员控制台通过数字、快速、高完整性的通信系统连接到控制柜中的控制器。控制由强大而安全的通信系统进行分配。

ALSTOM模块SDK-C0147 控制电源

ALSTOM module SDK-C0147 Control power spare parts use usually includes the transmission of signals or commands/information between different layers of the system, as well as the calculation of control actions as a result of decisions. The term DCS stands for distributed control system. They were previously known as Distributed Digital Control Systems (DDCS), which means that all DCS are digital control systems. They use digital encoding and process the transmission of information and commands.

Today, distributed control systems are used not only for all high-level control strategies, but also for low-level control loops. The instruments used to achieve automatic process control have gone through an evolutionary process and are still evolving today. In the beginning, the plant used large local pneumatic controllers; These were later miniaturized and centralized on the control panel and console.

When analog electronic instruments are introduced, their appearance hardly changes. The application of process control computers has led to a mixture of traditional analog and direct digital control (DDC) equipment located in the same control room. This combination of devices is not only bulky, but rather inflexible, as a change in the control configuration requires a change in the wiring of the wires.

This arrangement was replaced by a distributed control system in the 1970s. DCS controllers are geographically and functionally distributed throughout the plant and communicate with each other and with operator terminals, supervisory terminals to perform all necessary control functions for large plants/processes. The control scope is in the plant part where it is distributed.

DCS is suitable for plants that involve a large number of continuous control loops, special control functions, process variables and alarms. Most distributed control system architectures are usually designed and laid out in a similar way. The operator console is connected to the controller in the control cabinet through a digital, fast, high-integrity communication system. Control is distributed by a robust and secure communication system.