Research on the control chart based on the convergent CEV for censored characteristics of Weibull distribution

Traditional CEV-based control charts are usually confined to some specific types when dealing with censored characteristics, which greatly restrict the wide application of censored control charts in the high-quality manufacturing process. Thus, based on the principle of asymptotic reduction for censored data, the convergent CEV technique is proposed to be better applied in the analysis of censored characteristics firstly. Then, the universal design procedures and performance indicator in the form of the optimal reaction distance for censored characteristics of Weibull distribution are put forward, which are suitable for all types of control charts. Finally, the validity of the proposed method is verified by a case study of monitoring a censored characteristic relative to lifetime of some aeronautic bearings.