为了满足船用柴油机高速电磁阀高速响应特性，设计了基于高、低电压的双电源驱动和自举悬浮的驱动电路，根据驱动电路在正常工作情况和不同故障状态下的峰/保驱动电流波形的特征，设计一种基于电流波形特征值的高速电磁阀驱动电路的故障诊断方法，对不同的故障进行原因分析，并针对有电流输出的故障给出了应对补偿措施，故障诊断和补偿电路简单，只需要占用较少的CPU资源。试验表明，该系统能够实时地检测出高速电磁阀驱动电路的故障，并且能实时地保护电路，应急补偿控制电路和算法能根据故障类型快速地调整驱动电路和电流波形参数等，以维持各缸喷油的均匀性。
In order to meet the high-speed response characteristics of marine diesel high-speed solenoid valves, a hgh and low voltage dual power supply drive and bootstrap drive circuit is designed. According to the characteristics of the peak/hold current waveform of the drive circuit under normal working conditions and different fault conditions, a fault diagnosis method of high-speed solenoid valve drive circuit based on the characteristic value of current waveform is designed. The causes of different faults are analyzed, and corresponding compensation measures are given for the faults with current output. The fault diagnosis and compensation circuit are simple, and only take up less CPU resources. Experiments show that the system can detect the failure of the high-speed solenoid valve drive circuit in real time, and can protect the circuit in real time. The emergency compensation control circuit and algorithm can quickly adjust the drive circuit and current waveform parameters according to the types of failure to maintain the uniformity of fuel injection in each cylinder.
2022,44(11): 109-114 收稿日期：2021-09-22
DOI：10.3404/j.issn.1672-7649.2022.11.023
分类号：U664.142
基金项目：国家工信部高技术船舶资助项目
作者简介：黄都(1986-)，男，高级工程师，研究方向为船用柴油机喷射系统ECU设计
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