Optimal Design of Heterogeneous Series-Parallel Systems with Mixed Redundancy Types
This paper considers the redundancy allocation problem pertaining to 1-out-of-n: G heterogeneous series-parallel systems. Different from existing approaches that consider either hot or cold standby redundancy for a parallel subsystem, our approach considers a mix of cold and hot standby redundancies within one subsystem to achieve a balance between fast recovery and power conservation in the optimal system design. The objective of the optimal design is to select versions of components and hot and cold standby redundancy levels within the subsystem to minimize system unreliability while satisfying system-level constraint on cost. To formulate the objective function, an analytical method has been proposed for the reliability analysis of a subsystem with both hot and cold standby units. The method has no limitation on the type of time-to-failure distributions for the system components. An optimization solution methodology based on genetic algorithm is presented for obtaining the optimal design configuration. The proposed methodology is tested on several example data sets.
Cold standby hot standby reliability optimization genetic algorithm
PRASHANTHI BODDU LIUDONG XING OLA TANNOUS
University of Massachusetts - Dartmouth, North Dartmouth, MA, 02747, USA
国际会议
北京
英文
99-105
2011-06-20（万方平台首次上网日期，不代表论文的发表时间）