Method and apparatus for dynamically acquiring load of vehicle, and storage medium
US-11561124-B2 · Jan 24, 2023 · US
Methods and apparatus to calibrate a weight estimation
US11796380B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11796380-B2 |
| Application number | US-202117372074-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 9, 2021 |
| Priority date | Jul 9, 2021 |
| Publication date | Oct 24, 2023 |
| Grant date | Oct 24, 2023 |
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Abstract
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Methods, apparatus, systems and articles of manufacture to calibrate a weight estimation are disclosed herein. An example apparatus comprises memory including stored instructions, and a processor to execute the instructions to determine, via a first sensor, a first load estimation of a vehicle corresponding to when the vehicle under a load condition, determine, via a second sensor, a second load estimation corresponding to when the vehicle is moving and under the load condition, and calibrate, based on a difference between the second load estimation and the first load estimation, an error of the first load estimation.
First claim
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What is claimed is: 1. An apparatus comprising: memory including stored instructions; and a processor to execute the instructions to: determine, via a first sensor, a first load estimation of a vehicle corresponding to when the vehicle under a load condition; determine, via a second sensor, a second load estimation corresponding to when the vehicle is moving and under the load condition; and calibrate, based on a difference between the second load estimation and the first load estimation, an error of the first load estimation. 2. The apparatus of claim 1 , wherein the processor executes the instructions to determine the second load estimation by: determining a tire deflection of a tire of the vehicle when the vehicle is moving; and determining, based on the tire deflection and a stiffness of the tire, the second load estimation. 3. The apparatus of claim 2 , wherein the processor executes the instructions to determine the tire deflection of the tire based on a rotational speed of the tire and a velocity of the vehicle. 4. The apparatus of claim 1 , wherein the second sensor is an accelerometer embedded in a tire of the vehicle. 5. The apparatus of claim 4 , wherein the processor executes the instructions to determine the second load estimation by: determining a contact patch area of the tire; and determining, based on the contact patch area and a property of the tire, the second load estimation. 6. The apparatus of claim 1 , wherein the first sensor is disposed on an antiroll bar of the vehicle. 7. The apparatus of claim 1 , wherein the processor executes the instructions to determine the first load estimation and the second load estimation concurrently. 8. A non-transitory computer readable medium comprising instructions, which, when executed cause a processor to: determine, via a first sensor, a first load estimation of a vehicle corresponding to when the vehicle under a load; determine, via a second sensor, a second load estimation corresponding to when the vehicle is moving and under the load; and calibrate, based on a difference between the second load estimation and the first load estimation, an error of the first load estimation. 9. The non-transitory computer readable medium of claim 8 , wherein the instructions, when executed, cause the processor to determine the second load estimation by: determining, based on the second sensor reading, a tire deflection of a tire of the vehicle; and determining, based on the tire deflection and a stiffness of the tire, the second load estimation. 10. The non-transitory computer readable medium of claim 9 , wherein the instructions, when executed, cause the processor to determine the tire deflection of the tire based on a wheel speed of the tire and a velocity of the vehicle. 11. The non-transitory computer readable medium of claim 8 , wherein the second sensor is an accelerometer embedded in an interior tread of a tire of the vehicle. 12. The non-transitory computer readable medium of claim 11 , wherein the instructions, when executed, cause the processor to determine the second load estimation by: determining, based on the second sensor reading, a contact patch area of the tire; and determining, based on the contact patch area and a property of the tire, the second load estimation. 13. The non-transitory computer readable medium of claim 8 , wherein the first sensor is disposed on an antiroll bar of the vehicle. 14. The non-transitory computer readable medium of claim 8 , wherein the instructions, when executed, cause the processor to capture the first load estimation and the second load estimation concurrently. 15. A method comprising: determining, via a first sensor, a first load estimation of a vehicle corresponding to when the vehicle under a load; determining, via a second sensor, a second load estimation corresponding to when the vehicle is moving and under the load; and calibrating, based on a difference between the second load estimation and the first load estimation, an error of the first load estimation. 16. The method of claim 15 , wherein determining the second load estimation includes: determining, based on the second sensor reading, a tire deflection of a tire of the vehicle; and determining, based on the tire deflection and a stiffness of the tire, the second load estimation. 17. The method of claim 16 , wherein the determining the tire deflection of the tire is based on a wheel speed of the tire and a velocity of the vehicle. 18. The method of claim 15 , wherein the second sensor is an accelerometer embedded in an interior tread of a tire of the vehicle. 19. The method of claim 18 , wherein determining the second load estimation includes: determining, based on the second sensor reading, a contact patch area of the tire; and determining, based on the contact patch area and a property of the tire, the second load estimation. 20. The method of claim 15 , wherein the first sensor is disposed on an antiroll bar of the vehicle.
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Frequently asked questions
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- What does patent US11796380B2 cover?
- Methods, apparatus, systems and articles of manufacture to calibrate a weight estimation are disclosed herein. An example apparatus comprises memory including stored instructions, and a processor to execute the instructions to determine, via a first sensor, a first load estimation of a vehicle corresponding to when the vehicle under a load condition, determine, via a second sensor, a second loa…
- Who is the assignee on this patent?
- Ford Global Tech Llc
- What technology area does this patent fall under?
- Primary CPC classification G01G23/01. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Oct 24 2023 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).