Rotary kinetic fluid motors or pumps – With control means responsive to non-cyclic condition... – By shaft speed or torque responsive means
Patent
1975-12-29
1978-03-07
Maslousky, Paul E.
Rotary kinetic fluid motors or pumps
With control means responsive to non-cyclic condition...
By shaft speed or torque responsive means
91361, F15B 1316
Patent
active
040777383
ABSTRACT:
A time modulated position controller is provided comprising a hydraulic actuator having a cylinder and a piston slidably disposed in the cylinder thus defining a chamber within the cylinder. An electric solenoid valve functions upon actuation to permit fluid communication from a source of fluid pressure to the cylinder chamber while, conversely, upon deactuation of the solenoid valve, the valve functions to exhaust fluid from the cylinder chamber. A position transducer, which generates a signal in response to the axial position of the piston within the cylinder, is coupled to one input of a differential amplifier while a control line, having an analog signal is coupled to the second input of the differential amplifier. The error output from the differential amplifier is time modulated to produce a square wave with a variable duty cycle which in turn is used to activate the solenoid valve. Variation of the duty cycle to the solenoid valve causes the piston to accordingly assume a different axial position within the cylinder.
REFERENCES:
patent: 3266378 (1966-08-01), Shaw
patent: 3390614 (1968-07-01), Tatum
patent: 3521535 (1970-07-01), Oelrich
patent: 3612975 (1971-10-01), Keefe
patent: 3618469 (1971-11-01), Wills et al.
patent: 3698829 (1972-10-01), Kubo et al.
patent: 3798525 (1974-03-01), Cooper
Keely W. A.
Korneffel R.
Maslousky Paul E.
Teledyne Industries Inc.
LandOfFree
Time modulated position controller does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Time modulated position controller, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Time modulated position controller will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2018533