本文研究分析了不同的多重分形算法，确定使用更简便、快速有效的多重分形谱改进算法来求取往复压缩机的故障特征参数。
This paper compared different arithmetic of multifractal, and the improved multifractal arithmetic was used to compute fault feature parameter of reciprocating compressor.
已知试验轴承的故障特征参数与非故障特征参数，采用何种方法对采自实际应用场合的轴承信号进行判断和处理是问题的关键。
How to diagnose and deal with bearing signal which is gathered on-the-spot is the key problem based on the known of bearing trouble feature parameter and non-trouble one.
根据某自行火炮喷油压力的波形特点，分析确定了反映典型故障的特征参数。
The feature parameters extracted from the waveform of the full injection pressure reflecting typical faults are analyzed.
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