Apparatus and method of controlling a linear motor door operator
US6137255A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 30, 1999 |
| Grant date | Oct 24, 2000 |
| Priority date | — |
| Expiry date | Jul 30, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05B2219/45242
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A control system (10) for a door operator (12) for moving a door includes a position sensor (54) to be coupled to the door (28) for sensing the position of the door and generating a position signal. An acceleration sensor (48) is to be coupled to the door for sensing the acceleration of the door (28) and generating an acceleration signal. An integrator (50) integrates the acceleration signal to generate a first velocity signal. A differentiator (56) differentiates the position signal to generate a second velocity signal. A blending filter (42) blends the first and second velocity signal to generate a filtered velocity signal, and a controller (32) regulates the velocity of the door (28) in response to the time and position of the door in a door open or close operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.