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Digital telex flight control generally uses four_redundant or six_redundant RVDT,which means every control surface is made up of four or six independent and isolated RVDTs.And a shared working rod is connected with driving rod,pedal and rudder actuator.The function of RVDT signal distributor is realized based on the RVDT acquisition and simulation system consisting of PC and PCI-76C2 mutifunctional card.Without destroying the integrality of the ACE system connection and affecting the quality of measurement signal,two more duplicates of every electric output of redundant RVDT are created and changed into two analog outputs,one is still connected to the ACE system and the other one is connected to ground driving rod simulation operation test system.Therefore,one RVDT signal resource can be collected simultaneously when the test is running and the ACE system can return to the original position quickly after the test finishes.