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On account of the fault diagnosis problems of the levitation sensor on maglev train, this paper introduces a non-linear second-order discrete tracking differentiator to estimate the output value of the sensor, and judges whether the sensor has the fault by comparing the estimated value and the measured value. On the basis of the simulation analysis, fault diagnosis experiment of the current sensor...
There exist corresponding relationships of state information between the suspension points of the maglev train. This essay carries on the statistics of monitoring data of all the suspension points, describes the distributed situation of the suspension points data frequently spotted in engineering practices, detects suspect values and abnormal values in the suspension system based on the steady estimator...
The suspension characteristics of maglev train are studied in this paper when it is running on different curves. The suspension gap variation when maglev train is running on three different curves are presented. And the limitation to the vertical semi-diameter of the curve at the point where the grade of the longitudinal section of the track changes is also calculated. In addition, simulation is carried...
The problem of sensor-fault detection and diagnosis (FDD) of maglev system was studied based on principal component analysis (PCA). First, the mathematic model of single electromagnet suspension system was constructed, and then a sensor-FDD strategy was designed for it based on PCA. The performance of the FDD strategy was simulated. At last, tracking-differentiator (TD) was introduced into the sensor-FDD...
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