2results about How to "Reduced post-processing time" patented technology

The invention belongs to the technical field of flight parameter data processing, and particularly provides a method for judging the steady state of flight parameter data, which comprises the following steps: extracting flight parameter point location data to generate a parameter list; calculating and combining time intervals meeting preconditions; screening parameter points of the main parameters in the merging time interval; two stable time intervals are obtained through comparison of adjacent point thresholds and comparison of interval time thresholds; and taking the intersection of the two intervals to obtain a final steady-state time interval. According to the method, the sample size is reduced through precondition screening, the data processing efficiency is improved, irrelevant data is filtered, the judgment credibility is improved, and the method can be used for deducing pilot operation habits, judging the sensitivity of finished products / structural parts and predicting system faults and is suitable for flight parameter data steady-state analysis of various airplanes.

This invention discloses an automatic vehicle modal extraction method and related equipment. The method includes: obtaining basic order information of the first-order torsional mode and the first-order bending mode corresponding to the basic model, and basic model displacement information of the target point, respectively, through modal simulation analysis; obtaining modal calculation information corresponding to multiple parametric models through simulation analysis; calculating the similarity information between the displacement information of the parametric models corresponding to different parametric models and the displacement information of the basic model; and obtaining the torsional frequency information and torsional order information of the parametric models corresponding to the first-order torsional mode, and the bending frequency information and bending order information of the parametric models corresponding to the first-order bending mode, based on the similarity information. The method provided in this application can significantly reduce the post-processing time of simulation results, achieve automatic identification of modal information of parametric models, and improve simulation efficiency in the design phase.