Abstract: Currently, the market environment is changing rapidly and the competition is fierce. Improving the efficiency of progress monitoring and early warning accuracy to ensure timely delivery of products is the core goal of manufacturing enterprises in production management. Buffer monitoring provides an effective method for project schedule management. In order to solve the problem that the existing buffer monitoring ignores the internal structure of the project and the process characteristic information, a comprehensive buffer monitoring method of complex equipment manufacturing project based on double sensitivity is proposed. Firstly, considering the influence of process characteristics and the phase of the process on the project duration, the sensitivity is divided into process sensitivity and phase sensitivity, and the project buffer is dynamically assigned on a rolling basis according to the double sensitivity. Second, the buffer monitoring trigger points and process sensitivity thresholds are dynamically set according to the project execution phase, and the timing of corrective actions is judged by integrating the project-level buffer consumption and process-level sensitivity information, which makes the monitoring more focused and comprehensive. The experimental results show that the proposed method reduces the frequency of red and yellow warnings while ensuring the on-time completion rate of projects. Meanwhile, it avoids the cost waste caused by false warnings and highlights the monitoring focus, which improves the efficiency of buffer monitoring management.

Key words: complex equipment manufacturing projects, buffer monitoring, buffer allocation, process sensitivity, phase sensitivity