关键词: 成组生产, 劣化效应, 故障率, 生产调度, 预防性维护

Abstract: Aiming at the single machine system in group production,an improved production scheduling model considering failure rate was proposed.To minimize total completion time and total maintenance cost,the model adopted the deterioration effect besides similarity-dependent setup time and learning and forgetting effect.A hybrid maintenance strategy combined preventive maintenance and minimal repair was researched,in which failure rate threshold was considered to perform preventive maintenance and unexpected failure was considered to perform minimal repair based on machine's usage.Genetic algorithm was adopted to solve this integrated model.Through a case study,the computation results demonstrated that this optimization model could reduce the maintenance cost and shorten the completion time more effective without maintenance loss.

Key words: group production, deterioration effect, failure rate, production scheduling, preventive maintenance