# US 11,480,491 B1 · Method for determining vibrational anomalies of a vehicle

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- Number: US 11,480,491 B1
- Document ID: US11480491B1
- Status: Granted
- Kind: B1
- Application number: 17/670,664
- Filed: 2022-02-14
- Granted: 2022-10-25
- Earliest claimed: 2022-02-14
- Assignees: Balanced Engineering Solution, LLC
- Applicants: Balanced Engineering Solution, LLC
- Inventors: Eric L. Canfield; Robert P. Alston; David M. Scribner; Melody Gao; Andrew Babala; Kevin Codd; David A. Fenimore; Ryan Mendenhall; Kavish V. Sani; Rishi Kumar; Savar R. Amin; Pablo A. Rodriguez
- Web page: https://patentgrep.com/patent/US11480491B1

## CPC

- G01M 1/045: {the body being a vehicle wheel}
- G01M 1/16: by oscillating or rotating the body to be tested
- G01M 1/02: Details of balancing machines or devices
- G01M 1/225: {for vehicle wheels (in situ G01M1/28)}
- G01M 1/28: with special adaptations for determining imbalance of the body in situ, e.g. of vehicle wheels
- G01M 17/0074: {Details, e.g. roller construction, vehicle restraining devices}
- G01M 17/013: Wheels
- G01M 17/025: {using infrasonic, sonic or ultrasonic vibrations}
- G01M: TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR

## Abstract

A method is disclosed for determining vibrational anomalies of a vehicle. An object is removably 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 operation. The object includes one or more inertial measurement units (IMU's) mounted to the object and configured to measure parameters that are used for calculating the vibrational anomalies when the vehicle is in operation. Motion data captured by the one or more IMU's is collected. The collected motion data is processed to determine the presence of one or more vibrational anomalies of the vehicle. A recommended corrective action to be taken is determined when the result of the processed data indicates the presence of one or more vibrational anomalies of the vehicle.

## Claims

### Claim 1

A method for determining vibrational anomalies of a vehicle comprising:
(a) removably attaching an object to a wheel of the vehicle in a manner that inhibits the object from coming off of the vehicle when the vehicle is in operation, wherein the object is removably attached to a tire/hub assembly of the wheel of the vehicle via lug nuts of the tire/hub assembly by fitting portions of the object over the lug nuts of the tire/hub assembly, thereby removably attaching the object to the tire/hub assembly of the wheel of the vehicle without requiring removal of any lug nuts of the tire/hub assembly, the object including one or more inertial measurement units (IMU's) mounted to the object and configured to measure parameters that are used for calculating the vibrational anomalies when the vehicle is in operation;
(b) collecting motion data captured by the one or more IMU's;
(c) processing the collected motion data to determine the presence of one or more vibrational anomalies of the vehicle; and
(d) determining a recommended corrective action to be taken when the result of the processed data indicates the presence of one or more vibrational anomalies of the vehicle.

### Claim 2 (depends on 1)

The method of claim 1 wherein the vehicle is a motor vehicle or an electric vehicle, and the determined vibrational anomaly is caused by lateral force variation, and the recommended corrective action is one or more of (i) resetting lug nuts of the wheel, or (ii) inspecting the wheel's rim for potential bent regions.

### Claim 3 (depends on 1)

The method of claim 1 wherein the vehicle is a motor vehicle or an electric vehicle, and the determined vibrational anomaly is caused by radial force variation, and the recommended corrective action is one or more of (i) inspecting the wheel's tire for excessive debris and removing any debris, or (ii) inspecting the wheel's tire for excessive wear in a single location and replacing the tire of the wheel when excessive wear in a single location is located, or (iii) attaching a mass at a predefined location designated by the application of the wheel's tire.

### Claim 4 (depends on 1)

The method of claim 1 wherein step (c) further comprises further determining the magnitude and location of the source of the one or more vibrational anomalies of the vehicle.

### Claim 5

A method for determining vibrational anomalies of a tire/hub assembly that is removably mounted to a spindle of a tire balancing machine, the method comprising:
(a) removably attaching an object on the spindle of the tire balancing machine adjacent to the tire/hub assembly that has been previously mounted to the spindle of a tire balancing machine, the object including one or more inertial measurement units (IMU's) mounted to the object and configured to measure parameters that are used for calculating the vibrational anomalies of the tire/hub assembly during operation of the tire balancing machine;
(b) collecting motion data captured by the one or more IMU's;
(c) processing the collected motion data to determine the presence of one or more vibrational anomalies of the vehicle; and
(d) determining a corrective action to be taken when the result of the processed data indicates the presence of one or more vibrational anomalies of the tire/hub assembly.