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AssigneesSiemens Aktiengesellschaft, Mannesmann Rexrogh GmbH, Bayerische Motoren Werke Aktiengesellschaft
InventorsFranz X. Lacher, Erwin Grauvogl, Hans Rauner, Reinhard Auffhammer, Harald Hahn, Helmut Patze
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In a process for controlling an actuator which can be adjusted by means of a proportional valve, the proportional valve is controllable by means of two control magnets with control pulses acting in opposite directions. A phase angle between the control pulses is varied as a function of at least one control variable (command variable, correction variable or difference between the amplitudes or pulse durations of the control pulses), i.e. it is reduced as the control variable increases. This measure prevents undesired vibrations of the actuator and resulting noises.
A process for controlling an actuator which can be adjusted by means of a proportional valve, which comprises controlling the proportional valve by means of two control magnets with control pulses acting in opposite directions and having a specific frequency and specific mutual phase angle and at least one of variable amplitude and variable pulse duration, and varying the phase angle as a function of at least one control variable.
Dependencies are inferred from the claim text.