Method and system for synchronizing control limit and equipment performance

A method of synchronizing equipment performance and a control limit of a control chart for a statistical process control system, comprising:

• extending a chart model to have the chart properties, control node, control method and process catalog;
• calculating according to control method a new consistent control limit based on statistical deviation of data controlled by control charts with the same process catalog;
• assigning the consistent control limit to all control charts with the same process catalog;
• checking for new data with a frequency of review determined by a synchronization frequency of the control charts that control the new data;
• calculate new control limits based on the new data controlled by control charts, assigning the new control limits to the control charts;
• updating all control charts with the same process catalog with a new consistent control limit calculated by using the new control limits.