Torque control of hydrostatic machines via the pivot angle or th

Details Torque control of hydrostatic machines via the pivot angle or th Torque control of hydrostatic machines via the pivot angle or th

1994-03-15

1997-05-13

Ryznic, John E.

Power plants

Pressure fluid source and motor

Condition responsive control of pump or motor displacement

60452, 60487, F04B 108, G05D 1700, G01D 116

Patent

active

056281889

ABSTRACT:
A circuit arrangement for controlling the output torque of a hydrostatic machine connected to a hydraulic system having an impressed operating pressure. The circuit arrangement has a control element for changing the output torque of the machine based upon operating parameters corresponding to pressure, speed, temperature and the like. Control means are supplied with a desired torque value for generating a control signal for actuating the control element. Pick-up means are connected to the control means and to the control element for picking up a pivotal angle .alpha. or an eccentricity E, respectively, representing an actual displacement volume of the hydrostatic machine. The pivotal angle .alpha. and the eccentricity E are measured in either an analog or a digital manner. When measured in an analog manner, the desired value of the pivotal angle is .alpha.=M/P and the desired value of the eccentricity is E=M/P, where M is the torque and P is the pressure. When measured in a digital manner, the desired value for the pivotal angle and the eccentricity, respectively, are determined from previously determined measured values.

REFERENCES:
patent: 3213618 (1965-10-01), Cadiou
patent: 3385059 (1968-05-01), Leonard et al.
patent: 3462125 (1969-08-01), Gollwitzer et al.
patent: 3488956 (1970-01-01), Giles
patent: 3969896 (1976-07-01), Louis
patent: 4284389 (1981-08-01), Young et al.
patent: 4688380 (1987-08-01), Reinhardt et al.
patent: 4736585 (1988-04-01), Kordak
patent: 4747268 (1988-05-01), Reinhardt
patent: 4809504 (1989-03-01), Izumi et al.
patent: 4823552 (1989-04-01), Ezell et al.
patent: 4845950 (1989-07-01), Metzner
patent: 4930311 (1990-06-01), Dantlgraber
patent: 5070695 (1991-12-01), Metzner
patent: 5077973 (1992-01-01), Suzuki et al.
patent: 5197860 (1993-03-01), Nishida et al.
patent: 5251440 (1993-10-01), Bong-dong et al.
patent: 5267441 (1993-12-01), Devier et al.
patent: 5303551 (1994-04-01), Lee
patent: 5307631 (1994-05-01), Tatsumi et al.
patent: 5341311 (1994-08-01), Liebler

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