| 基于方差分析的某轴流式压气机失速征兆起始检测 |
| |
| 引用本文： | 李扬,李应红,吴云.基于方差分析的某轴流式压气机失速征兆起始检测[J].航空计算技术,2005,35(1):104-105. |
| |
| 作者姓名： | 李扬 李应红 吴云 |
| |
| 作者单位： | 空军工程大学,工程学院,陕西,西安,710038;空军工程大学,工程学院,陕西,西安,710038;空军工程大学,工程学院,陕西,西安,710038 |
| |
| 摘 要： | 及时、准确地检测到压气机不稳定工作的征兆对于保障飞行安全具有重要的意义。为了对某涡喷发动机进行稳定性监控,对节流过程中的压气机机匣壁面静压信号进行了方差分析。分析表明,压力信号的方差可以表征压气机工作状态变化对信号脉动强度的影响,可以提前0 03s-0 07s检测到失速起始征兆,由于算法简单,该方法具有较大的工程应用价值。
|
| 关 键 词： | 压气机 旋转失速 失速征兆 方差分析 |
| 文章编号： | 1671-654X(2005)01-0104-02 |
| 修稿时间： | 2004年12月10 |
Detection of Rotating Stall Inception Precursor of Axial Flow Compressor with Variance Analysis |
| |
| LI Yang,LI Ying-hong,WU Yun.Detection of Rotating Stall Inception Precursor of Axial Flow Compressor with Variance Analysis[J].Aeronautical Computer Technique,2005,35(1):104-105. |
| |
| Authors: | LI Yang LI Ying-hong WU Yun |
| |
| Abstract: | It is very important to truly detect compressor's instability precursor as soon as possible, which is essential to ensure flight safety. In order to monitor the stability of a certain compressor, casing wall static pressure during throttling operation is analyzed with variance method. It's demonstrated that variance of pressure signal could reflect the influence of different working states on signal's pulsating strength and detect the stall precursor 0.05s in advance. For its simplicity, there's a big engineering application value. |
| |
| Keywords: | compressor rotating stall stall inception variance analysis |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
