关键词: 发动机试车数据, 试车台基线库, 回归分析

Abstract: A set of test-cell baseline is a kind of trend line of the condition parameter of an ideal performance engine tested on the test-cell. Comparing the test data of an engine tested on the test-cell with the baseline of the corresponding condition parameter can get the tested engines condition. Therefore, the baseline plays an important role in analyzing the test data. However, engineers presently set up a baseline by dealing with the test data with Excel software, which always results in some mistakes, low efficiency and bad precision. Making use of regression analysis method, the mathematics model of the baseline of a test-cell was established. A mathematics formula of the fitting error of the model was presented. Moreover, how to build up the base of the baselines was also discussed. The mathematics model mentioned above was applied in an engines Life-Cycle Management (LCM) software, which proved the practicability of the model.

Key words: aero-engine test data, test cell baselines, regression analysis