Patent ID: 11940417
Assignee: TOYOTA MOTOR ENGINEERING & MANUFACTURING NORTH AMERICA, INC.
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 5:
6. A method of absorbing a flexural wave, comprising:
detecting, with a sensor attached to a beam, an incident wave propagating in the beam;
determining, based on a signal from the sensor generated in response to the incident wave, an amplitude and a phase of the incident wave;
controlling an actuator, connected to the beam, to generate a suppression wave, based on the amplitude and the phase of the incident wave, that reduces a coefficient of reflection of the incident wave resulting in a reflected wave;
determining that a sampling rate of the sensor is less than a threshold:
causing, in response to a determination that the sampling rate is less than the threshold, a time delay to be imposed on a feedback signal input into a neural network to predict a voltage Va to apply to the actuator to generate a cancellation wave, wherein the feedback signal is received from the sensor; and
controlling the actuator to generate the cancellation wave based on the time-delayed feedback signal that indicates multiple wave components present in the beam, the multiple wave components including the incident wave, the suppression wave, and the reflected wave.