Apparatus and method of controlling a linear motor door operator

Details Apparatus and method of controlling a linear motor door operator Apparatus and method of controlling a linear motor door operator

1999-07-30

2000-10-24

Masih, Karen

Electricity: motive power systems

Positional servo systems

With particular motor control system responsive to the...

318615, 318560, 318561, 318616, 318628, G05B 1100

Patent

active

061372552

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.

REFERENCES:
patent: 4263627 (1981-04-01), Rose et al.
patent: 4792737 (1988-12-01), Goff et al.
patent: 6026339 (2000-02-01), Williams

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