A comparative study of the TQI method and process performance index method in the quality evaluation of track fine adjustment

Abstract

The track quality index method (TQI method) is widely used in the quality evaluation of track fine adjustment, while the process performance index method is a new method to evaluate the quality of track fine adjustment based on a process performance index. In this paper, the quality of the same section of track was evaluated separately with the two methods, and the similarities and differences as well as the advantages and disadvantages of the two methods are compared. The conclusions are: in the evaluation results of the general and individual statistical index of the quality of track fine adjustment, the results obtained by the two methods are basically consistent, but the new method is more clear and comprehensive; in the efficiency of track fine adjustment, the new method is more targeted than the TQI method; in terms of the convenience of analysis, the TQI method is more convenient. Comprehensively, the process performance index method is better than the TQI method.