# Research on a Comprehensive Evaluation Method of Train Anti-Slip System Performance
###### Abstract  
The quality of a train's braking anti-slip control system has a significant impact on train safety and braking performance. Currently, there is no established standard evaluation method for anti-slip control systems, making it an important area of research in the academic community. This article comprehensively considers four key indexes: adhesive coefficient utilization rate, air consumption increase ratio, wheel slip work, and anti-slip valve action frequency. The evaluation system takes into account the influence of load layer and braking level, and proposes a comprehensive evaluation method for train anti-slip control based on multi-factor hierarchical analysis. A series of experiments were conducted using a semi-physical simulation test bench for anti-slip evaluation, aimed at comprehensively evaluating two different anti-slip control strategies. By applying the method proposed in this article, the above four indexes and their corresponding weights of two anti-slip control strategies under different conditions were calculated. Finally, the comprehensive evaluation result R1 of anti-slip control strategy 1 was calculated as 0.8389, while the comprehensive evaluation result R2 of anti-slip control strategy 2 was calculated as 0.7912. Based on the comprehensive evaluation results, it is evident that the anti-slip comprehensive evaluation method established in this article is comprehensive and scientific, with concise and clear evaluation results. This method carries certain reference significance for the design of future anti-slip evaluation methods. Keywords:train braking; semi-physical simulation; anti-slip evaluation +
Footnote †: journal: Medical  
performance of the anti-slip system. Regarding the practical application of the concept of anti-slip efficiency, [PERSON] and [PERSON] et al. proposed several different calculation methods for anti-slip efficiency in their article [4]. [PERSON] et al. applied the deceleration linear assumption calculation method to analyze and process test data from actual anti-slip tests on CRH3 multiple units and found that the anti-slip efficiency during pure air emergency braking was about 105%, with an efficiency value greater than 100%. This indicates that there are still many difficulties in calculating anti-slip efficiency in actual vehicle slipping tests [5; 6]. At present, it is difficult to accurately evaluate the train anti-slip system using a single index. Therefore, some scholars have proposed a more comprehensive and scientific evaluation method for train anti-slip performance. The authors of [7] propose a statistical evaluation method for train anti-slip performance based on braking distance and randomly changed the amplitude and frequency of the adhesive coefficient curve within a certain range to conduct statistical evaluation of anti-slip control algorithms under different adhesive conditions. The method has a certain innovation, but it is simplistic to evaluate train anti-slip performance through braking distance only, making it difficult to comprehensively consider train anti-slip performance. The authors of [8] used dispersion standardization to normalize and standardize various indexes, and obtained a set of performance evaluation methods for train anti-slip systems based on the analytic hierarchy process. However, the influence of brake level and train load changes on anti-slip performance was ignored in the text, which also made it difficult to accurately reflect the performance of train anti-slip systems in the evaluation results. In summary, many scholars have conducted research on the performance evaluation methods of train anti-slip systems. Some only consider anti-slip efficiency or braking distance, while others establish anti-slip evaluation systems through comprehensive evaluation methods, but ignore the influence of load and braking level.