Method and apparatus for controlling altitude
US4538230A · kind A · utility
10Cited by
14References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 29, 1982 |
| Grant date | Aug 27, 1985 |
| Priority date | — |
| Expiry date | Oct 29, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D1/048
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
The invention provides a vertical velocity signal and an integration signal, respectively, of two detected ambient conditions. The signals are summed, in a selectable ratio, and compared with a predetermined altitude set point. When there is a difference between the summed outputs and the altitude set point, an altitude control signal is provided to control a vertical propulsion system of an object whose altitude is to be maintained above a terrain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.