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本文讨论利用复式的方法,综合最可靠控制系统的问题.对只受一个约束条件的系统,直接从工程设计中少花钱、多收益的概念出发,加强薄弱环节,平衡提高各个串联环节的可靠性,应用偏微分求最大值的原理,推导出最可靠控制系统的准确表达式.对带有多个约束条件的可靠性最优化问题,则借助拉格朗日乘子法直接求解.同时,指出不受任何条件约束的复式混合故障系统,也有可靠性最优化的问题,并导出了答案.另外举出计算例题,便于一般工程技术人员参阅和应用.本文明确提出按照控制系统中元器件的故障性质分为独立(开路型)故障与相依(短路型)故障两类,这样不但有利于分析元器件或分系统故障对总系统可靠性影响的大小,同时也便于进行最可靠控制系统的设计.
This article discusses the use of complex approach to synthesize the most reliable control system.For a system subject to only one constraint, directly from the concept of less spending, more benefits in engineering design, to strengthen the weak links, balance and improve the reliability of the various series links The principle of partial differential maximum is applied to derive the exact expression of the most reliable control system.For the reliability optimization problem with multiple constraints, the Lagrange multiplier method is used to solve the problem.At the same time, Point out that the system is not subject to any conditions of the complex hybrid fault system, but also the reliability of the optimization problem, and derived the answer.In addition to the calculation of examples to facilitate the general engineering and technical personnel to refer to and application.This paper clearly put forward in accordance with the control system components Fault nature is divided into independent (open-circuit) fault and dependent (short-circuit fault) two types, this will not only help to analyze components or subsystems on the reliability of the total system size, but also facilitate the design of the most reliable control system .