Creating lean value streams through proactive variability management
针对复杂产品生产系统中变异导致精益难以持续的问题，提出基于PDCA循环的价值流分区方法，将稳定区应用精益、不稳定区由专家管理，并开发IT系统逐步扩展精益活动。
Complex product and production systems often result in high variability in the production flow, prohibiting the sustainable implementation of lean practices. In this paper the authors introduce a PDCA cycle to analyse and reduce variability in value streams. The value stream is divided into zones, which are then qualified as stable or unstable. Lean practices can be applied in stable zones, unstable zones remain expert-driven. Measures are introduced to reduce variability in unstable zones with the ultimate target, to turn them into stable zones, extending sustainable lean activities in the value stream, step by step. An IT system is developed to acquire, process and visualise the vast amount of data to provide structured information for experts and management for the reduction of variability in production.