| 摘要 |
Provided is an abnormality detection method for a vehicle body tilt control device that makes it possible to determine which air spring has an air supply/exhaust abnormality. The present invention includes a model creation step for preparing a state estimation model for each of the front and rear vehicle halves 10 into which a vehicle is divided, and an abnormality detection step for applying a state estimation technique to the state estimation model to detect which one of the air springs 3 has an air supply/exhaust abnormality. The state estimation model is a model where, when flow rate command values for air supplied to/exhausted from the air springs included in each vehicle half are input, each of the input flow rate command values for air supplied to/exhausted from the air springs 3 is multiplied by a virtual gain and the results are averaged, and, based on the averages, the average of the heights of the air springs is output, where each virtual gain is included as a state variable. |
