Electrified vehicle and method of controlling same
US-2024424930-A1 · Dec 26, 2024 · US
Automotive vehicle and method of controlling an electric machine therein
US10399456B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10399456-B2 |
| Application number | US-46646709-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 15, 2009 |
| Priority date | May 15, 2009 |
| Publication date | Sep 3, 2019 |
| Grant date | Sep 3, 2019 |
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- Title
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Abstract
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A method for controlling an electric machine of a vehicle drivetrain may include determining a rotational speed of the electric machine, determining a rotational speed of a drivetrain component other than the electric machine, and modifying a torque command to the electric machine based on a difference between the rotational speeds to dampen drivetrain vibrations.
First claim
Opening claim text (preview).
What is claimed: 1. A method for controlling an electric machine of a vehicle drivetrain, the method comprising: modifying a torque command to the electric machine in response to a difference between a speed of the electric machine and a speed of a drivetrain component other than the electric machine exceeding a threshold that is based on a compliance associated with the drivetrain to dampen drivetrain vibrations. 2. The method of claim 1 wherein modifying a torque command to the electric machine includes increasing the torque command to the electric machine if the speed of the electric machine is less than the speed of the drivetrain component other than the electric machine. 3. The method of claim 2 wherein the amount by which the torque command is increased is proportional to the difference between the speeds. 4. The method of claim 1 wherein modifying a torque command to the electric machine includes decreasing the torque command to the electric machine if the rotational speed of the electric machine is greater than the speed of the drivetrain component other than the electric machine. 5. The method of claim 4 wherein the amount by which the torque command is decreased is proportional to the difference between the speeds. 6. The method of claim 1 wherein the drivetrain component other than the electric machine is a wheel. 7. An automotive vehicle comprising: a drivetrain including an electric machine; and at least one controller configured to modify a torque request to the electric machine in response to a difference between a speed of the electric machine and a speed of a drivetrain component other than the electric machine exceeding a threshold that is based on a compliance associated with the drivetrain. 8. The vehicle of claim 7 wherein modifying a torque request to the electric machine includes increasing the torque request to the electric machine if the speed of the electric machine is less than the speed of the drivetrain component other than the electric machine. 9. The vehicle of claim 8 wherein the amount by which the torque request is increased is proportional to the difference in speeds. 10. The vehicle of claim 7 wherein modifying a torque request to the electric machine includes decreasing the torque request to the electric machine if the speed of the electric machine is greater than the speed of the drivetrain component other than the electric machine. 11. The vehicle of claim 10 wherein the amount by which the torque request is decreased is proportional to the difference in speeds. 12. An automotive vehicle comprising: a drivetrain including an electric machine; and at least one controller configured to modify a torque request to the electric machine by an amount that is proportional to a difference between a speed of the electric machine and a speed of a drivetrain component other than the electric machine in response to the difference exceeding a threshold that is based on a compliance associated with the drivetrain. 13. The vehicle of claim 12 wherein modifying a torque request to the electric machine includes increasing the torque request to the electric machine if the speed of the electric machine is less than the speed of the drivetrain component other than the electric machine. 14. The vehicle of claim 12 wherein modifying a torque request to the electric machine includes decreasing the torque request to the electric machine if the speed of the electric machine is greater than the speed of the drivetrain component other than the electric machine.
Assignees
Inventors
Classifications
Electric energy management in electromobility · CPC title
- B60L15/20Primary
for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed · CPC title
Cross-Sectional Technologies · mapped topic
Cross-Sectional Technologies · mapped topic
Electric machine technologies in electromobility · CPC title
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Frequently asked questions
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- What does patent US10399456B2 cover?
- A method for controlling an electric machine of a vehicle drivetrain may include determining a rotational speed of the electric machine, determining a rotational speed of a drivetrain component other than the electric machine, and modifying a torque command to the electric machine based on a difference between the rotational speeds to dampen drivetrain vibrations.
- Who is the assignee on this patent?
- Luedtke Daniel R, Ford Global Tech Llc
- What technology area does this patent fall under?
- Primary CPC classification B60L15/20. Mapped technology areas include Operations & Transport.
- When was this patent published?
- Publication date Tue Sep 03 2019 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).