基于同步转换器的飞机仪表综合测试系统

Aircraft devices integrated testing system based on synchro converters

针对国外自动测试设备昂贵、国内设备专用性强这一现状,采用单片机做控制器,设计了基于同步转换器的飞机仪表综合测试系统,用于航空仪表的地面离位测试。介绍了航空仪表的测试原理,设计了同步发送电路和同步接收电路,实现了数字/同步信号的相互转换。采用数字I/O口和继电器板实现了离散量的自动测试。采用双通道耦合的方法,提高了系统测试精度。实验结果表明:测试数据符合航空维修手册规定,该系统测试简单,可以有效地降低维修成本,提高机务维修的测试自动化水平。

By using MCU as the controller, an integrated test system of aircraft avionics instrument which is based on synchro converters is designed to offline test the UUT on ground and to meet the fact that the auto-test equipment abroad is costly and the test equipment at home is performed special. The principles of aviation instrument test is described, meanwhile synchro transmitting circuit and receiving circuit is designed, enabling digital/synchro signal conversion. By using a digital I/O port and a relay panel to achieve measurement of diversity. Adopting method of dual-channel coupling system test precision is increased. The experimental result indicates that the test data is satisfied with CMM and test system is simple and effectively reduces the maintenance cost and improves the automation test level of aircraft equipment maintenance.