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IEC 61511标准术语简介

2008.12.15阅读 15811

for the purpose of controlling changes to those components and maintaining continuity and traceability throughout the life cycle
  为了在生命周期全过程中控制组件的变化(硬件和软件)和保持连续性和可追溯性控制工程网版权所有,对进化系统(硬件和软件)中组件的识别规则。
  控制系统 control system
  system which responds to input signals from the process and/or from an operator and generates output signals causing the process to operate in the desired manner
  对来自过程和/或操作员的输入信号进行响应,并产生使过程按要求方式运行的输出信号的系统。
  危险失效 dangerous failure
  failure which has the potential to put the safety inst
rumented system in a hazardous or fail-to-function state
  可能使安全仪表系统潜在地处于某种危险或功能丧失状态的失效。
  相关失效 dependent failure
  failure whose probability cannot be expressed as the simple product of the unconditional probabilities of the individual events which caused it
  其概率不能表示为引起失效的独立事件的无条件概率的简单乘积的失效。
  检测到的 detected
  揭露的 revealed
  明显的 overt
  in relation to hardware failures and software faults控制工程网版权所有, detected by the diagnostic tests or through normal operation
  在与硬件失效和软件故障有关时,通过诊断测试或正常操作发现的。
  装置 device
  functional unit of hardware or software控制工程网版权所有, or both, capable of accomplishing a specified purpose
  能实现某个规定目的的硬件或软件或者二者结合的功能单元
  诊断覆盖率(DC) diagnostic coverage (DC)
  ratio of the detected failure rate to the total failure rate of the component or subsystem as detected by diagnostic tests. Diagnostic coverage does not include any faults detected by proof tests.
  诊断测试检测到的部件或子系统的失效率与总失效率之比。诊断覆盖率不包含由检验测试检测到的任何故障。
  多样性 diversity
  existence of different means performing a required function
  执行一个要求功能存在不同方法。
  电气/电子/可编程电子(E/E/PE)
  electrical/electronic/programmable electronic
  based on electrical (E) and/or electronic (E) and/or programmable electronic (PE) technology
  基于电气(E)和/或电子(E)和/或可编程电子(PE)技术。
  误差 error
  discrepancy between a computedwww.cechina.cn, observed or measured value or condition and the truewww.cechina.cn, specified or theoretically correct value or condition
  计算出的、观测到的和测量到的值或条件,和真实的、规定的或理论上正确的值或条件之间的差异。
  外部风险降低设施 external risk reduction facilities
  measures to reduce or mitigate the risks, which are separate and
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