Systems and methods for controlling a lift axle
US11220304B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 22, 2020 |
| Grant date | Jan 11, 2022 |
| Priority date | — |
| Expiry date | Dec 22, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60G2204/4702
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An example method includes receiving, at a first frequency, sensor information indicative of an actual pressure level of a pilot fluid signal in a pilot line connecting an outlet port of a pilot supply valve to a pilot port of a main valve; determining an estimated pressure for the pilot fluid signal in the pilot line at a second frequency greater than the first frequency; determining a pressure estimate error based on comparing the actual pressure level to the estimated pressure; determining a pressure level error based on comparing the estimated pressure to a commanded pressure value; and operating the pilot supply valve in an open state to provide the pilot fluid signal to the pilot port of the main valve until the pressure level error is less than a threshold value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.