Servo operated digital positioning control system
US4491776A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 25, 1982 |
| Grant date | Jan 1, 1985 |
| Priority date | — |
| Expiry date | May 25, 2002 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/37313
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A closed loop servo operated digital control system in which a dynamically operable moveable member can be effectively and accurately controlled during movement from an initial position to a command position by compensating for both velocity error and for position error. A differential between a present measured position of the moveable member and a command position provides a position error signal. Present velocity is determined by computing position differential as a function of time. A velocity error signal is obtained by subtracting the determined velocity from a velocity command which is stored as a velocity command profile. The total error is the resultant sum of the position error and a velocity error and this sum is converted to an analog signal in order to power an amplifier/motor which, in turn, provides power for the control system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.