US 12,225,825 B2
Systems and methods for adaptive flexural wave absorber
Xiaopeng Li, Ann Arbor, MI (US); Taehwa Lee, Ann Arbor, MI (US); and Hideo Iizuka, Ann Arbor, MI (US)
Assigned to Toyota Motor Engineering & Manufacturing North America, Inc., Plano, TX (US)
Filed by Toyota Motor Engineering & Manufacturing North America, Inc., Plano, TX (US)
Filed on Mar. 5, 2021, as Appl. No. 17/193,784.
Prior Publication US 2022/0285604 A1, Sep. 8, 2022
Int. Cl. H01L 41/113 (2006.01); G10K 11/162 (2006.01); G10K 11/172 (2006.01); H10N 30/30 (2023.01); H10N 30/80 (2023.01)
CPC H10N 30/304 (2023.02) [G10K 11/162 (2013.01); G10K 11/172 (2013.01); H10N 30/802 (2023.02)] 20 Claims
OG exemplary drawing
 
1. A flexural wave absorption system, comprising:
a base member connected to a beam that may be subject to flexural waves;
an arm member, connected to the base, disposed substantially in parallel alignment with the beam;
a mass member connected to a distal end of the arm member;
a piezoelectric patch, connected to the arm member, and configured to generate electricity in response to a flexural wave propagating through the beam; and
a shunting circuit that includes a reactance device adjustable based on a frequency of the flexure wave, is connected to the piezoelectric patch, and is configured to provide a voltage at an opposite phase of the electricity generated by the piezoelectric patch to absorb the flexural wave.