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Inductive load control

專利號
US10867734B2
公開日期
2020-12-15
申請人
ZF Friedrichshafen AG(DE Friedrichshafen)
發(fā)明人
Florian Weinl; Christoph Stritt; Ulrich Schmidt
IPC分類
H02M3/158; H01F7/18; H02M5/293; H02M3/155; H02M1/00; F16D25/00; F16D48/06; F16H61/02; F16K31/06
技術領域
voltage,load,value,in,loads,terminals,inductive,armature,can,be
地域: Friedrichshafen

摘要

A plurality of inductive loads (105) are connectable in parallel with one another between first and second terminals (120, 125), to which a controllable voltage (205) is applied. A method (300, 400) for operating the loads (105) includes the steps of detecting (305, 405) the connection of a previously non-energized load (105) between the terminals (120, 125); setting (310, 410, 435) the voltage (205) to a predetermined first value (210), and, after the lapse of a predetermined time interval (315, 415), adjusting the voltage (205) to a predetermined second value (215), with the second value (215) being lower than the first value (210).

說明書

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19

After the first predetermined waiting time, at a time T5 the voltage 205 is again reduced to the second value 215. At a time T6, following a further predetermined waiting interval there is a further reduction to the third value 220.

At a time T7 both loads are switched off by disconnecting them from at least one of the terminals 120, 125 of the device 100, in particular by means of an associated switch 130. The currents flowing through the loads 105 fall at first rapidly and then more slowly to zero. The same effect can be produced by reducing the voltage 205 to the fourth value 225.

FIG. 3 shows a first method 300 for controlling inductive loads 105, in particular by means of the device 100 of FIG. 1. The method 300 can be carried out at least in part by the control device 150 or the processing device 160. For this, the method 300 can be presented in the form of a computer program product with program coding means.

權利要求

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