Motors: expansible chamber type – Working member position feedback to motive fluid control – Electrical input and feedback signal means
Patent
1988-12-12
1990-08-28
Look, Edward K.
Motors: expansible chamber type
Working member position feedback to motive fluid control
Electrical input and feedback signal means
91362, 91361, 91459, 13762546, 13762528, 25112904, F15B 903, F15B 909
Patent
active
049515497
ABSTRACT:
A novel digital servo valve system for use in displacing an actuator is capable of operating either in closed or open loop mode. The system includes a controller that compares computed values of actuator parameters with preselected parameter values and iteratively determines therefrom command signals for the servo valve. The servo valve is characterized by a ball screw mechanism that eliminates mechanical backlash and a torsion bar which increases radial and angular compliance. A servo valve provided according to the present invention also displays reduced flow forces using a simple, inexpensive valve body in combination with a uniquely configured displaceable spool.
REFERENCES:
patent: 2747612 (1951-04-01), Lee
patent: 3970830 (1976-07-01), White et al.
patent: 4155535 (1979-03-01), Seamone
patent: 4220178 (1980-09-01), Jackson
patent: 4235156 (1980-11-01), Olsen
patent: 4276744 (1981-07-01), Pisano
patent: 4294162 (1981-10-01), Fowler et al.
patent: 4391430 (1983-07-01), Miller
patent: 4416338 (1983-11-01), Nelson et al.
patent: 4437388 (1984-03-01), Budzich
patent: 4492246 (1985-01-01), Prescott et al.
patent: 4569012 (1986-02-01), Sekozawa
patent: 4574686 (1986-03-01), Budzich
patent: 4595979 (1986-06-01), Arai et al.
patent: 4649803 (1987-03-01), Abel
patent: 4660431 (1987-04-01), Heine
patent: 4673160 (1987-06-01), Tolley
patent: 4729407 (1988-03-01), Lew
patent: 4732174 (1988-03-01), Ueno
D'Angelo Gary
Hamman Eric
Olsen Zenny
Sperbeck Albert J.
Denion Thomas
Look Edward K.
Olsen Controls, Inc.
LandOfFree
Digital servo valve system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Digital servo valve system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Digital servo valve system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1581833