基于分布式系统可修复控制方法可靠性和安全性分析  

Reliability and safety analysis of repairable control method based on distributed systems

作　　者：冯丽媛[1,2] 姚绪梁[1] 曹然[1] 邹艾利[1] 

机构地区：[1]哈尔滨工程大学自动化学院,黑龙江哈尔滨150001 [2]黑龙江科技大学电子与信息工程学院,黑龙江哈尔滨150022

出　　处：《系统工程与电子技术》2015年第11期2663-2668,共6页Systems Engineering and Electronics

基　　金：国防科工局技术基础研究基金(Z192011B001)资助课题

摘　　要：冗余技术对于规模大复杂程度高的系统主要采用双机热备的方法,但其难点是不能准确定位失效单元。针对上述难点,提出一种基于分布式系统的可修复控制方法。通过对系统进行可修复设置,并利用马尔可夫过程进行建模和仿真,最后针对可靠性和安全性进行了分析。仿真结果表明,可修复控制方法可以提高系统的可靠性及安全性,冗余单元的故障检测率等于主单元的故障检测率且冗余单元的失效率大于主单元的失效率时,系统的安全性和可靠度达到最大值。Redundant technology mainly uses the method of hot standby to cope with high complexity and large-scale system, but the difficulty is that it cannot accurately position the failure unit. In response to the diffi- culty, a repair method based on distributed control systems is proposed, which uses the repairable setting to re- alize fault position. By establishing Markov models and simulation respectively, the reliability and safety of the two schemes are analyzed. The simulation results show that the repairable control method can improve the relia- bility and safety, the safety and reliability of the system is maximized when the fault detection rate of the redun- dancy unit is equal to the main unit and the failure rate of the redundancy unit is greater than the main unit.

关 键 词：可修复控制 冗余单元 故障检测率 失效率 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]