A unit pump test bench is developed on an in-line pump test platform. The bench is composed of pump adapting assembly, fuel supply subsystem, lubricating subsystem and a control unit. A crank angle domain injection co...A unit pump test bench is developed on an in-line pump test platform. The bench is composed of pump adapting assembly, fuel supply subsystem, lubricating subsystem and a control unit. A crank angle domain injection control method is given out and the control accuracy can be 0.1° crank degree. The bench can test both mechanical unit pump and electronic unit pump. A test model-PLD12 electronic unit pump is tested. Full pump delivery map and some influence factors test is done. Experimental results show that the injection quantity is linear with the delivery angle. The quantity change rate is 15% when fuel temperature increases 30 ℃. The delivery quantity per cycle increases 30 mg at 28 V drive voltage. The average delivery difference for two same type pumps is 5 %. Test results show that the bench can be used for unit pump verification.展开更多
高压直流控制保护系统在RTDS试验过程中,囿于RTDS仿真能力的限制,众多外围设备无法完全放入RTDS建模。由于没有足够的测控单元和现场设备,导致直流控制系统面临'控无可控'的局面,执行顺序、连锁逻辑等重要功能不能得到测试。Pro...高压直流控制保护系统在RTDS试验过程中,囿于RTDS仿真能力的限制,众多外围设备无法完全放入RTDS建模。由于没有足够的测控单元和现场设备,导致直流控制系统面临'控无可控'的局面,执行顺序、连锁逻辑等重要功能不能得到测试。Profisim(Process Field Simulator)现场层模拟系统在工控机上通过软件的方式建立一次设备模型和测控单元模型,然后再通过数据IO卡、Profibus现场总线、IEC61850通信,与直流控制保护系统、RTDS实时数字仿真设备构成完整的闭环测试系统,解决了RTDS的仿真瓶颈,实现了对直流控制保护系统的完整测试。该成果已成功应用于高岭背靠背直流联网工程的控制保护系统试验,结果表明缩短了试验周期、提高了试验质量。展开更多
在先进飞机供电系统中,电源控制器PCU(Power Control Unit)负责对飞机供电系统进行监控和保护,并将供电系统的工作状态信息和PCU本身的工作状态信息传送给上位机,PCU在飞机供电系统的地位很重要;根据现实需要,设计了针对某型号飞机PCU...在先进飞机供电系统中,电源控制器PCU(Power Control Unit)负责对飞机供电系统进行监控和保护,并将供电系统的工作状态信息和PCU本身的工作状态信息传送给上位机,PCU在飞机供电系统的地位很重要;根据现实需要,设计了针对某型号飞机PCU的测试仪,对PCU工作状态进行测试,测试仪负责向PCU提供模拟飞机供电系统工作时的各种信号及飞机供电系统发生故障时的故障信号,即模拟PCU的各种输入信号。展开更多
基金the Ministerial Level Advanced Research Foundation (404050301 .4)
文摘A unit pump test bench is developed on an in-line pump test platform. The bench is composed of pump adapting assembly, fuel supply subsystem, lubricating subsystem and a control unit. A crank angle domain injection control method is given out and the control accuracy can be 0.1° crank degree. The bench can test both mechanical unit pump and electronic unit pump. A test model-PLD12 electronic unit pump is tested. Full pump delivery map and some influence factors test is done. Experimental results show that the injection quantity is linear with the delivery angle. The quantity change rate is 15% when fuel temperature increases 30 ℃. The delivery quantity per cycle increases 30 mg at 28 V drive voltage. The average delivery difference for two same type pumps is 5 %. Test results show that the bench can be used for unit pump verification.
文摘高压直流控制保护系统在RTDS试验过程中,囿于RTDS仿真能力的限制,众多外围设备无法完全放入RTDS建模。由于没有足够的测控单元和现场设备,导致直流控制系统面临'控无可控'的局面,执行顺序、连锁逻辑等重要功能不能得到测试。Profisim(Process Field Simulator)现场层模拟系统在工控机上通过软件的方式建立一次设备模型和测控单元模型,然后再通过数据IO卡、Profibus现场总线、IEC61850通信,与直流控制保护系统、RTDS实时数字仿真设备构成完整的闭环测试系统,解决了RTDS的仿真瓶颈,实现了对直流控制保护系统的完整测试。该成果已成功应用于高岭背靠背直流联网工程的控制保护系统试验,结果表明缩短了试验周期、提高了试验质量。
文摘在先进飞机供电系统中,电源控制器PCU(Power Control Unit)负责对飞机供电系统进行监控和保护,并将供电系统的工作状态信息和PCU本身的工作状态信息传送给上位机,PCU在飞机供电系统的地位很重要;根据现实需要,设计了针对某型号飞机PCU的测试仪,对PCU工作状态进行测试,测试仪负责向PCU提供模拟飞机供电系统工作时的各种信号及飞机供电系统发生故障时的故障信号,即模拟PCU的各种输入信号。
