Flight path transition control apparatus with predictive roll command
US4354240A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 24, 1980 |
| Grant date | Oct 12, 1982 |
| Priority date | — |
| Expiry date | Mar 24, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D1/0202
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
The flight path transition control apparatus provides a roll attitude command to control the aircraft to execute an exponential transition path to a predetermined course in accordance with the exponential control law Y+KY where Y is the lateral displacement of the aircraft from the predetermined course, Y is the rate of change of the lateral displacement and K is a time constant of the system. A predictive roll command .phi..sub.p is generated in accordance with ##EQU1## where V.sub.g is the aircraft ground speed, PA1 TAE is the track angle error of the aircraft with respect to the predetermined course, PA1 TAE.sub.0 is the track angle error of the aircraft with respect to the predetermined course at capture maneuver initiation, PA1 g is the gravitational constant, and PA1 t is the elapsed time following capture initiation. The predictive roll command .phi..sub.p is combined with the exponential control law to provide the aircraft roll attitude command .phi..sub.c =.phi..sub.p +Y+KY to control the aircraft to execute the exponential transition path in capturing the predetermined course.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.