Patent ID: 11919498
Assignee: ZF CV SYSTEMS EUROPE BV
Field: Transport (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A method for determining unstable behavior of a trailer of a vehicle combination, the vehicle combination having N members, one of the members comprising a tractor vehicle and at least one further member comprising the trailer, the unstable behavior of the trailer being determined depending on a driving-dynamics actual characteristic variable of the tractor vehicle, the method comprising:
determining at least one driving-dynamics actual characteristic variable of the trailer, the at least one driving-dynamics actual characteristic variable characterizing a current driving-dynamics state of the trailer and following from a measurement by at least one sensor in the trailer;
determining at least one driving-dynamics target characteristic variable of the trailer, the at least one driving-dynamics target characteristic variable following from the at least one driving-dynamics actual characteristic variable of the tractor vehicle by using a kinematic model depending on geometric characteristic variables of the vehicle combination; and
comparing at least one of the at least one driving-dynamics actual characteristic variable of the respective trailer with the at least one driving-dynamics target characteristic variable, which is determined by the kinematic model, of the respective trailer, a presence of unstable behavior of the respective trailer being inferred when the at least one driving-dynamics actual characteristic variable of the respective trailer deviates from the at least one determined driving-dynamics target characteristic variable of the respective trailer by a defined reference value.