Linear solenoid valve actuation device

Details Linear solenoid valve actuation device Linear solenoid valve actuation device

1980-02-22

1982-08-24

Rosenthal, Arnold

Valves and valve actuation

Electrically actuated valve

Remote or follow-up control system for electrical actuator

60276, 361152, 123440, F16K 3108, F02M 724

Patent

active

043457371

ABSTRACT:
A linear solenoid valve actuation device comprises a step wave generating circuit comprising a converting circuit whereby the desired amount of control is computed at a predetermined period of clocks to hold or store the computed value until the next computation and generate a step wave voltage having a value corresponding to the computed value, and a current amplifier circuit for supplying to a linear solenoid valve a current having a value corresponding to the output voltage of the step wave generating circuit, thereby actuating the linear solenoid valve with a step waveform current. The linear solenoid valve actuation device further comprises a hysteresis elimination circuit for generating a signal having a value corresponding to the frictional force of the sliding portion in the linear solenoid valve and added to or subtracted from the step waveform drive signal, and a circuit whereby a pulse signal of a predetermined width is added to the step waveform drive signal when it is increasing and the pulse signal is subtracted from the drive signal when it is decreasing.

REFERENCES:
patent: 3410293 (1968-11-01), Ernyei
patent: 3875907 (1975-04-01), Wessel et al.
patent: 3895611 (1975-07-01), Endo et al.
patent: 4150643 (1979-04-01), Sasayama et al.
patent: 4216938 (1980-08-01), Inada et al.

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