This paper proposes the main factors affecting the reliability of control systems with PLC, then several methods to improve it are also discussed.

分析了影响PLC控制系统可靠性的主要因素，探讨了提高控制系统可靠性的硬、软件措施，这些措施均具有实用价值。

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The reliability of control systems is the key to operate normally for the systems. It has very important signification to ensure the reliability and the security of modern complex systems.

控制系统的可靠性是系统能投入运行的关键，切实保障现代复杂系统的可靠性和安全性，具有十分重要的意义。

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On the basis of discussing the reliability theory by total distributed control systems, it puts forward the reliability design of series hardware circuit.

在简要论述集散型控制系统可靠性理论的基础上，提出放大器硬件电路的可靠性设计。

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This means the control systems and the reliability of technology in police labs do not have to meet the same stringent standards as their private counterparts.

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The Commission's systems are "out of control" with "obvious risks as regards reliability", the paper quotes the report as saying, and says the commission "has been warned about them but to date has not taken any action".

BBC: EU hit by accounting allegations

An effective command and control capability requires a wide range of information technologies aimed at increasing the reliability of remote sensing and reconnaissance systems.

CENTERFORSECURITYPOLICY: Center for Security Policy | Chinese Information Warfare: A Phantom Menace or Emerging Threat? | Page: 9