US 12,247,996 B2
Method of compensating for sensor tolerances
Markus Eisenbarth, Stuttgart (DE); and David Caredda, Stuttgart (DE)
Assigned to Dr. Ing. h.c. F. Porsche Aktiengesellschaft, (DE)
Filed by Dr. Ing. h.c. F. Porsche Aktiengesellschaft, Stuttgart (DE)
Filed on Dec. 16, 2022, as Appl. No. 18/082,672.
Claims priority of application No. 10 2021 133 387.3 (DE), filed on Dec. 16, 2021.
Prior Publication US 2023/0194565 A1, Jun. 22, 2023
Int. Cl. G01P 15/18 (2013.01); B60W 40/107 (2012.01); B60W 40/109 (2012.01); B60W 50/02 (2012.01)
CPC G01P 15/18 (2013.01) [B60W 40/107 (2013.01); B60W 40/109 (2013.01); B60W 50/0205 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A method of compensating for sensor tolerances of accelerometers of a vehicle, said method comprising the following steps:
(A) recording measurement signals of at least three similarly oriented accelerometers,
(B) calculating an acceleration (ab,z) at a reference position in a spatial direction corresponding to an orientation of the accelerometers,
(C) low-pass filtering the measurement signals,
(D) determining tolerance parameters (cx, cy, cz) of each accelerometer via an optimization method with the aid of the calculated acceleration (ab,z) at the reference position, and
(E) calculating adjusted measurement signals from the recorded measurement signals and the tolerance parameters.