<p>An electrical-pneumatic system has a controller which has an input terminal for a reference variable signal, an input terminal for a regulating variable or feedback signal and an output terminal for a manipulated variable signal, which preferably is a pulse-width modulated signal. The controller will actuate a drive unit of an electrical-pneumatic pre-control unit, which has a 3/2 directional control valve that responds to the pulse-width modulated signal from the controller. The output of the 3/2 directional control valve is smoothed by being passed through a throttle and into a volume, and a pneumatic booster is connected downstream from the volume. The output of the pneumatic booster is sensed and provides the feedback signal.</p>
申请公布号
DE19534017(C2)
申请公布日期
1997.10.09
申请号
DE1995134017
申请日期
1995.09.14
申请人
SAMSON AG, 60314 FRANKFURT, DE
发明人
KEMMLER, LOTHAR, 64546 MOERFELDEN-WALLDORF, DE;KOLBENSCHLAG, STEFAN, DIPL.-ING., 64291 DARMSTADT, DE