公开(公告)号：US11988573B1

公开(公告)日：2024-05-21

申请号：US18400534

申请日：2023-12-29

Applicant: NVH Technology LLC

Inventor： Rishi Kumar ,  Saptak Das ,  Raj Methi ,  Elijah Daniel Wright ,  Eric L. Canfield ,  Robert P. Alston ,  David A. Fenimore ,  Stephen T. Buchanan

IPC: G01M1/28

CPC classification number: G01M1/28

Abstract: A method is provided for determining a location to place a mass on a wheel assembly. A first set of acceleration data is collected from a plurality of inertial measurement units (IMU's) that are mounted to a removably attachable object that is attached to a wheel of the vehicle in a manner that inhibits the object from coming off of the vehicle when the vehicle is in motion. The first set of acceleration data is collected while operating the vehicle at a first speed. The first set of acceleration data is used to determine an offset between a center of the object and a bearing center of the wheel assembly. A second set of acceleration data is collected from the plurality of inertial measurement units (IMU's). The second set of acceleration data is collected while operating the vehicle at second speed that is greater than the first speed. The second set of acceleration data and the offset determined from the first set of acceleration data is used to determine the location to place the mass on a wheel assembly with respect to the bearing center of the wheel assembly.

公开(公告)号：US12181368B1

公开(公告)日：2024-12-31

申请号：US18608166

申请日：2024-03-18

Applicant: NVH Technology LLC

Inventor： Stephen T. Buchanan ,  Saptak Das ,  Rishi Kumar ,  Raj Methi ,  Thomas S. Buchanan ,  Eric L. Canfield ,  Robert P. Alston ,  David A. Fenimore

IPC: G01M1/28 ,  G01M1/22

Abstract: An apparatus is removably attached to lug nuts of a vehicle's wheel assembly for use in determining imbalance forces of the wheel assembly during motion of the vehicle. The apparatus includes a plurality of data collection devices. Each data collection device is removably attachable to one lug nut of the same wheel. Each data collection device includes a single cup-shaped object and a motion measurement sensor. The data collection object is mounted to the vehicle's wheel by fitting the cup-shaped object over the lug nut of the wheel. The motion measurement sensor measures parameters that are used for calculating the imbalance forces during motion of the vehicle. A processor receives the measured parameters from motion measurement sensors of each of the data collection devices and uses the measured parameters to identify an instantaneous center of rotation of the wheel assembly for use in determining imbalance forces of the wheel assembly of the vehicle during motion of the vehicle.