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US-2015308074-A1 · Oct 29, 2015 · US
Hydraulic cylinder displacement measurement system
US2016333902A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2016333902-A1 |
| Application number | US-201514709757-A |
| Country | US |
| Kind code | A1 |
| Filing date | May 12, 2015 |
| Priority date | May 12, 2015 |
| Publication date | Nov 17, 2016 |
| Grant date | — |
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Abstract
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A system for measuring hydraulic cylinder displacement may include a sensor configured to generate a signal indicative of a hydraulic fluid flow velocity into or out of the hydraulic cylinder. The system may further include a hydraulic fluid flow model configured to scale the hydraulic fluid flow velocity to a predicted rate of change of cylinder displacement for the hydraulic cylinder. The system may also include a Kalman filter configured to integrate the predicted rate of change of cylinder displacement during a predict phase in order to determine a series of predicted cylinder displacement values over time during operation of the hydraulic cylinder, periodically receive values of cylinder displacement measured optically during operation of the cylinder, periodically update the predicted cylinder displacement values using the optically measured cylinder displacement values during an update phase, fuse the optically measured cylinder displacement values with the predicted cylinder displacement values over time, and output an estimated time series of cylinder displacement values based on the fused values during operation of the hydraulic cylinder.
First claim
Opening claim text (preview).
What is claimed is: 1 . A hydraulic cylinder displacement measuring system, comprising: a sensor configured to generate a signal indicative of a hydraulic fluid flow velocity into or out of the hydraulic cylinder; a hydraulic fluid flow model configured to scale the hydraulic fluid flow velocity to a predicted rate of change of cylinder displacement for the hydraulic cylinder; and a Kalman filter configured to: integrate the predicted rate of change of cylinder displacement…
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Mechanical Engineering · mapped topic
- F15B15/2838Primary
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
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Frequently asked questions
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- What does patent US2016333902A1 cover?
- A system for measuring hydraulic cylinder displacement may include a sensor configured to generate a signal indicative of a hydraulic fluid flow velocity into or out of the hydraulic cylinder. The system may further include a hydraulic fluid flow model configured to scale the hydraulic fluid flow velocity to a predicted rate of change of cylinder displacement for the hydraulic cylinder. The sys…
- Who is the assignee on this patent?
- Caterpillar Inc
- What technology area does this patent fall under?
- Primary CPC classification F15B15/2838. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Thu Nov 17 2016 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).