Magnetic suspension control loop performance evaluation method and equipment based on time-varying fractal analysis

The invention relates to a magnetic levitation control loop performance evaluation method and equipment based on time-varying fractal analysis, and the method comprises the following steps: obtaining suspension point information of a magnetic levitation train suspension module, and obtaining a window function-based time-varying generalized Hurst index estimation value matched with a preset index based on the time-varying fractal analysis according to the suspension point information; acquiring a comprehensive generalized Hurst index of each suspension point according to the time-varying generalized Hurst index estimation values of the plurality of suspension points collected in a period of time; and obtaining a performance comparison result of the control loop according to the comprehensive generalized Hurst index corresponding to each suspension point. Compared with the prior art, the method has the advantages that great difficulty caused by establishment of an accurate mathematical model is avoided, and mea