Constructing Fault Trees for Advanced Process Control Systems - Application to Cascade Control Loops
Resource
IEEE Trans. on Reliability 53 (1): 43-60
Journal
IEEE Transaction on Reliability
Journal Volume
53
Journal Issue
1
Pages
43-60
Date Issued
2004
Date
2004
Author(s)
Abstract
A systematic approach to construct fault trees for advanced process control systems is presented in this paper. For illustration purpose, the proposed method is explained with a specific feedback scheme, i.e., the cascade control strategy. The digraph configuration of a standard system is first described and analyzed in detail. On the basis of a series of qualitative simulation studies, all failure mechanisms can be identified and summarized with a set of generalized fault-tree structures. The fault trees produced with the conventional digraph-based techniques are shown to be not as comprehensive as the ones constructed with the proposed approach. To demonstrate the correctness of our analysis, the successful application of the proposed structures to a heat exchange process is presented. In addition, the resulting fault tree is compared with one obtained from a single-loop feedback control system and the trade-off between the two in system reliability and control performance is assessed accordingly.
Type
journal article
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