Sliding integral proportional (SIP) controller for aircraft skid control
US7035725B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | May 4, 2005 |
| Grant date | Apr 25, 2006 |
| Priority date | — |
| Expiry date | May 4, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60T8/1703
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The sliding, integral, and proportional controller for providing aircraft antiskid braking control includes a reference velocity subsystem, a velocity error ratio subsystem, and a main controller subsystem generating a control command output signal indicative of a command braking pressure. The main controller subsystem includes a one dimensional sliding mode controller subsystem to determine an estimated net wheel torque signal, an adaptive threshold subsystem for generating an adaptive threshold based upon the modified slip ratio signal and a clock signal, integral gain subsystems, a proportional controller subsystem, and a pressure limiter. A method for determining braking efficiency of an aircraft braking system independent of the specific conditions is also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.