US 12,332,141 B2
Estimation system, estimation method, and recording medium
Yosuke Inoue, Tokyo (JP); Yuka Enda, Tokyo (JP); and Naotsugu Ueda, Tokyo (JP)
Assigned to TDK CORPORATION, Tokyo (JP)
Filed by TDK CORPORATION, Tokyo (JP)
Filed on Nov. 16, 2022, as Appl. No. 17/988,345.
Claims priority of application No. 2021-187948 (JP), filed on Nov. 18, 2021.
Prior Publication US 2023/0152186 A1, May 18, 2023
Int. Cl. G01M 17/02 (2006.01); B60C 23/04 (2006.01); B60C 23/06 (2006.01); B60W 40/13 (2012.01); G01L 1/16 (2006.01); G01M 17/013 (2006.01)
CPC G01M 17/02 (2013.01) [B60C 23/04 (2013.01); B60C 23/0428 (2013.01); B60C 23/064 (2013.01); B60W 40/13 (2013.01); G01L 1/16 (2013.01); G01M 17/013 (2013.01); B60W 2422/70 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An estimation system comprising:
a first sensor configured to be disposed between a wheel and a tire mounted on the wheel and to output a first sensor signal in accordance with a pressing force applied by the wheel and the tire; and
a processor configured to;
generate a first section signal by dividing the first sensor signal by a specific section;
determine a damping ratio from the first section signal; and
estimate a state of a rotating body including the wheel and the tire based on the damping ratio.