Power plants – Pressure fluid source and motor – Control relative to independently driven oscillator – speed...
Patent
1978-06-22
1980-01-01
Geoghegan, Edgar W.
Power plants
Pressure fluid source and motor
Control relative to independently driven oscillator, speed...
60431, 60449, 60DIG2, F16H 3946
Patent
active
041809793
ABSTRACT:
A control system for a hydrostatic transmission is disclosed of the type including an engine driven fluid pump and a fluid motor. The control system includes a main control operable in response to an electrical command signal to vary the displacement of the pump, and a command signal generator for generating the command signal. The anti-stall control includes means for comparing electrical signals representative of engine speed and a reference speed, and generating an electrical anti-stall signal representative of the maximum percentage of commanded pump displacement which is permissible without causing the engine to drop below the reference speed. The anti-stall control includes means for electrically multiplying the anti-stall signal and the command signal, downstream of the shaping and rate limiting circuits. The invention provides a simple, inexpensive anti-stall control which can be adjusted to have the maximum possible gain (responsiveness) without inducing circuit instability.
REFERENCES:
patent: 2581149 (1952-01-01), Shaw
patent: 3173243 (1965-03-01), Reinke
patent: 3234726 (1966-02-01), Hann
patent: 3667225 (1972-06-01), Karman
patent: 3768373 (1973-10-01), Divigard
patent: 3804191 (1974-04-01), Golan et al.
patent: 3914938 (1975-10-01), Cornell et al.
patent: 3924410 (1975-12-01), Cornell et al.
Stout and Kaufman, Handbook of Operational Amplifier Circuit Design, McGraw-Hill, Modulators, 18-3 & 18-8 to 18-14.
Eaton Corporation
Geoghegan Edgar W.
Kasper L.
McCloskey R. J.
Yakimow J.
LandOfFree
Anti-stall control for electrical hydrostatic transmission contr does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Anti-stall control for electrical hydrostatic transmission contr, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Anti-stall control for electrical hydrostatic transmission contr will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2114833