基于PCI-76C2多功能卡的RVDT信号分配器的设计与实现

The design and realization of RVDT signal distributor based on PCI-76C2 mutifunctional card

摘要:

数字式电传飞控一般采用四余度或六余度RVDT,即每个操纵面由四个或六个独立的、相互隔离的RVDT组成,一个共用的工作杆与驾驶杆、脚蹬或舵面作动器相连。基于PC机和PCI-76C2多功能卡组成RVDT采集与仿真系统,实现RVDT信号分配器功能。在不破坏机载ACE系统连接完整性及不影响其测量信号质量的前提下,要将多余度RVDT中的每个输出电信号复制两份然后以两路模拟输出,一路仍继续接入ACE系统,另一路则需引入地面驾驶杆模拟操纵试验系统中。这样,试验进行时,同一个RVDT信号源能被两个系统同时采集；试验结束后,ACE系统又能够快速恢复原状。

Abstract:

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.