| DK 2制动机的气动系统故障诊断技术研究 |
| Fault Diagnosis Technology on DK 2 Pneumatic Brake System |
| 投稿时间：2013-03-28 |
| 中文关键词:DK 2制动机 故障诊断 数学模型 等价空间 |
| 英文关键词:DK 2 Brake fault diagnosis system model parity space relations |
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| 中文摘要: |
| 针对DK 2制动机气动系统故障的复杂性和不确定性难题，设计了基于等价空间的故障诊断方法。首先利用空气流体理论对制动机的高速电控阀、机械阀等基本部件建立各部件的功能模型；然后分析制动机的多种工作模式特点，获取系统内部各部件的作用关系，建立DK 2制动机在自动制动功能、单独制动功能和后备空气制动下的制动机系统模型；最后利用等价空间故障诊断方法，对系统功能设计残差生成器和阈值函数，构建系统状态布尔向量与故障信息对应关系的故障特征矩阵表，搜索系统故障候选集，实现系统的故障检测和隔离。仿真分析表明，该方法具有运算速 |
| 英文摘要: |
| A parity space based method is proposed to diagnosis the pneumatic and electric faults for DK 2 brake pneumatic system with complexity and uncertainty. Firstly, the function models are built based on air fluid theory for the brake basic components such as the high speed electric pneumatic values and the mechanic pneumatic values; then the multiple brake operational modes are analyzed to obtain the relation of basic components in brake system, and the entire brake system model is constructed under the auto brake, independent brake and pneumatic brake condition respectively. Based on it, the parity space based fault diagnosis method is utilized to design residual generator and fault threshold, and the fault character matrix is constructed to relate the Boolean system state vector to fault information. The system fault is detected and isolated by researching the fault candidate set. The simulation presents the high efficiency and accuracy of the proposed method, which can meet the diagnosis requirement of DK 2 pneumatic brake system. |
| 南杰,黄志武.DK 2制动机的气动系统故障诊断技术研究[J].石家庄铁道大学学报：自然科学版,2013,(3):61-69. |
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