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
为满足复兴号系列中国标准动车组大批量生产需求,简化测试人员操作,依据牵引控制单元(Traction Control Unit,TCU)例行试验项点,并参考原手动测试台测试原理,设计研发了一套牵引控制单元自动化测试系统。该自动化测试系统硬件以PXI测控...为满足复兴号系列中国标准动车组大批量生产需求,简化测试人员操作,依据牵引控制单元(Traction Control Unit,TCU)例行试验项点,并参考原手动测试台测试原理,设计研发了一套牵引控制单元自动化测试系统。该自动化测试系统硬件以PXI测控计算机为核心,配合外部测量设备和信号产生设备;测试序列使用LabVIEW语言编程;为减少测试时间,充分利用多核CPU资源,对测试序列进行并行化处理。该自动化测试系统已在复兴号350公里中国标准动车组TCU上进行了验证,测试结果表明该测试系统能大幅缩减测试时间、准确识别故障点、实现测试报告的自动生成,具有较强的可靠性和实用性。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
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.
文摘为满足复兴号系列中国标准动车组大批量生产需求,简化测试人员操作,依据牵引控制单元(Traction Control Unit,TCU)例行试验项点,并参考原手动测试台测试原理,设计研发了一套牵引控制单元自动化测试系统。该自动化测试系统硬件以PXI测控计算机为核心,配合外部测量设备和信号产生设备;测试序列使用LabVIEW语言编程;为减少测试时间,充分利用多核CPU资源,对测试序列进行并行化处理。该自动化测试系统已在复兴号350公里中国标准动车组TCU上进行了验证,测试结果表明该测试系统能大幅缩减测试时间、准确识别故障点、实现测试报告的自动生成,具有较强的可靠性和实用性。
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。
