Vehicle parameter estimator

Summary:

For future driver assistance systems, energy management or range calculation, exact models of vehicle longitudinal dynamics are required. The performance of these vehicle functions depends significantly on the accuracy of the model parameters. Important parameters for longitudinal dynamics are the vehicle mass and the driving resistance, consisting of rolling resistance and air resistance.

The required values are variable during operation and during the product lifetime, e.g. due to loading, add-on parts or variable tires. For economic and technical reasons, it is not possible to measure the parameters directly on the vehicle. However, modern automobiles have a large number of sensor signals, which, together with a vehicle model and sensor data fusion, provide the required parameters.

Within the framework of this project, a new estimation algorithm is being developed that determines the vehicle parameters as fast as possible with little computing and storage effort. In addition, the method should be robust against measurement errors and situations with poor excitation.