초록 ▼

A diagnostic trend analysis method is used to analyze engine trend data for aircraft engines. Appropriate trend parameters are calculated from raw trend data and wild points associated with the calculated trend parameters are eliminated. Abnormal shifts and changes are detected at the most recent po

A diagnostic trend analysis method is used to analyze engine trend data for aircraft engines. Appropriate trend parameters are calculated from raw trend data and wild points associated with the calculated trend parameters are eliminated. Abnormal shifts and changes are detected at the most recent point for each trend parameter. The abnormal shifts and changes in each trend parameter are then evaluated. The evaluation is used to filter out spurious symptoms and provide accurate maintenance recommendations for real engine trend shifts.

대표청구항 ▼

[ I claim:] [1.] A diagnostic trend analysis method for analyzing engine trend data for aircraft engines, the method comprising the steps of:calculating appropriate trend parameters from raw trend data;eliminating wild points associated with the calculated trend parameters;detecting abnormal shifts

[ I claim:] [1.] A diagnostic trend analysis method for analyzing engine trend data for aircraft engines, the method comprising the steps of:calculating appropriate trend parameters from raw trend data;eliminating wild points associated with the calculated trend parameters;detecting abnormal shifts and changes at a most recent point for each trend parameter and differentiating between a real change in engine performance and a faulty measurement or data scatter;evaluating the abnormal shifts and changes in each trend parameter; andusing the evaluation to filter out spurious data and provide accurate maintenance recommendations for real engine trend shifts.