Method and vehicle system for determining the state of the components of a chassis
A method for determining a condition of the components of an individual chassis includes preparing a first data set of vehicle data, which includes at least loading and/or wear data of the same or a similar chassis type over its entire lifetime, producing an individual second data set for a particular vehicle by determining the vehicle data as a target condition up to a predefined first kilometers-travelled count and/or a specified age of the individual vehicle, determining currently measured vehicle data from a predefined first kilometers-travelled count and/or a specified age of the particular vehicle, and comparing the currently measured vehicle data with the first data set and also the second data set, in order to determine the condition. Also disclosed is a vehicle system configured to execute the method and vehicle with the vehicle system.
1 . A method for determining a condition of components of an individual chassis of a particular vehicle, the method comprising:
generating a first data set of vehicle data, which contains at least loading and/or wear data of a same or a similar chassis type as the particular vehicle over an entire lifetime of the particular vehicle;
producing an individual second data set for the particular vehicle by determining a target vehicle condition up to a predefined first kilometers-travelled count and/or up to a specified age of the particular vehicle;
determining currently measured vehicle data from a predefined second kilometers-travelled count and/or a specified age of the particular vehicle;
comparing the currently measured vehicle data with the first data set to produce a first comparison and further comparing the currently measured vehicle data with the second data set to produce a second comparison; and
evaluating the first comparison and the second comparison in order to determine the condition.
2 . The method according to claim 1 , wherein producing the second data set comprises:
assigning the currently measured vehicle data to a road surface cluster that represents a road surface or forming a new road surface cluster associated with a previously unknown road surface; and
assigning the currently measured vehicle data to the newly formed road surface cluster.
3 . The method according to claim 1 , wherein the first data set comprises a generically produced reference data set from the same or similar chassis type, tested on a test stand in a cross-country test.
4 . The method according to claim 3 , wherein the reference data set is produced separately for each of the two axles of the same or similar chassis type.
5 . The method according to claim 1 , wherein the currently measured vehicle data and the second data set-include vibration amplitudes of the vehicle's movements on characteristic road surfaces.
6 . The method according to claim 1 , wherein evaluating the first comparison and the second comparison comprises:
determining an existing condition with reference to the first comparison;
determining the target condition with reference to the second comparison; and
determining the current state of wear of the components of the chassis with reference to a target-versus-actual comparison.
7 . The method according to claim 1 , wherein the current vehicle data are measured continuously or adaptively by the vehicle.
8 . The method according to claim 1 , wherein the current vehicle data includes the current kilometers-travelled count and/or the age of the vehicle.
9 . A vehicle system for determining a condition of components of an individual chassis of a particular vehicle, the vehicle system comprising:
a storage unit for determining a first data set of vehicle data, wherein the first data set contains at least loading and/or wear data of a same or a similar chassis type as the particular vehicle over an entire life of the particular vehicle;
wherein the storage unit is configured for producing an individual second data set for a particular vehicle, such that the individual second data set contains measured vehicle data as a target condition up to a predefined kilometers-travelled count and/or up to a specified age of the particular vehicle, by means of the one or more sensors;
a sensor system configured for detecting currently measured vehicle data up to a predefined kilometers-travelled count and/or up to a specified age of the individual vehicle; and
a comparison unit configured for carrying out a first comparison between the currently measured vehicle data and the first data set and a second comparison between the currently measured vehicle data and the second data set, in order to determine the condition.
10 . The vehicle system according to claim 9 , wherein the sensor system is configured to detect a road surface and the system further comprises a processor configured for producing the second data set by assigning the currently measured vehicle data to a road surface cluster that represents the road surface or by forming a new road surface cluster associated with a previously unknown road surface and assigning the currently measured vehicle data to the newly formed road surface cluster and storing the second data set in the storage unit.
11 . The vehicle system according to claim 9 , wherein the comparison unit is configured to determine an existing condition with reference to the first comparison and additionally configured to determine the target condition with reference to the second comparison, and further configured to determine the current wear condition of the components of the chassis with reference to a target-versus-actual comparison.
12 . The vehicle system according to claim 9 , wherein the sensor system is configured to measure the current vehicle data continuously or adaptively.
13 . The vehicle system according to claim 9 , wherein the currently measured vehicle data includes the current kilometers-travelled count and/or the age of the vehicle.
14 . A vehicle comprising the vehicle system according to claim 9 .