This paper deals wirh the technical problems in developing a dual channel electronic control system JYZD 01 for a modified turboshaft aeroengine WJ6G4A which serves as a powerplant of a locomotive.All performance test...This paper deals wirh the technical problems in developing a dual channel electronic control system JYZD 01 for a modified turboshaft aeroengine WJ6G4A which serves as a powerplant of a locomotive.All performance tests and cyclic duration tests of the WJ6G4A engine burning keroscne and heavy fuel have been done under control of the developed system.The measured data meet the design reguirements.展开更多
文摘This paper deals wirh the technical problems in developing a dual channel electronic control system JYZD 01 for a modified turboshaft aeroengine WJ6G4A which serves as a powerplant of a locomotive.All performance tests and cyclic duration tests of the WJ6G4A engine burning keroscne and heavy fuel have been done under control of the developed system.The measured data meet the design reguirements.
文摘氢原子钟辅助电子学系统已稳定工作多年,但是与目前的先进技术相比,原来的设计理念已显陈旧,同时暴露出外围电路庞杂、故障点比较多、问题查找困难等诸多问题;运用ARM+FPGA模式对电路进行了改进,其中运用12 bit高精度模数转换芯片实现参数采样,数字化设计改进氢原子钟智能温度控制系统,采用直接数字式频率合成器(Direct Digital Synthesizer,DDS)技术设计产生综合器频率信号,简化设计实现氢原子钟的通信功能;从测试结果来看,提高了参数的采样精度,数字化的智能温控模式实现了温度的自动化智能调整,直接式频率合成器技术简化了设计电路,基于i Coupler磁隔离技术的隔离型RS-232接口收发器设计提高了接口的稳定性;从整体设计来看,大大简化了设计电路,提高了系统性能及可靠性。