基于优化解调分析的柴油机气缸工作状态评估  

Condition Evaluation of Diesel Engine Cylinders Based on Optimizing Demodulation Analysis

作　　者：樊新海 石文雷 张传清 刘相波 FAN Xin-hai;SHI Wen-tei;ZHANG Chuan-qing;LIU Xiang-bo(Vehicle Engineering Department, Academy of Army Armored Forces, Beijing 100072, China)

机构地区：[1]陆军装甲兵学院车辆工程系,北京100072

出　　处：《装甲兵工程学院学报》2018年第1期57-60,共4页Journal of Academy of Armored Force Engineering

摘　　要：针对某型坦克柴油机气缸工作状态评估问题,利用高斯函数复调制移频设计复解析带通滤波器,提取排气噪声的主频率成分及其包络,通过合理确定滤波器中心频率和带宽实现优化解调分析,建立了以包络最大幅值归一化后的标准差为特征参数的新方法。应用结果表明:该方法切实可行,易于应用。In view of condition evaluation of diesel engine cylinders in a tank,a new method of complex analytic band pass filter design is presented using Gaussian function complex modulation to extract exhaust noise dominating frequency component and its envelope. Optimal demodulation analysis is achieved by reasonable determination of filter’s centre frequency and bandwidth. A new method is put forward based on the standard deviation of the maximal amplitude normalized envelope signal extracted as characteristic parameter. The experimental result shows that this method is effective and easy to use.

关 键 词：柴油机 排气噪声 信号处理 复解析滤波器 解调 

分 类 号：TK421.6[动力工程及工程热物理—动力机械及工程] TN713[电子电信—电路与系统]