| 喷油泵校正器技术参数测试方法研究 |
| |
| 引用本文： | 杜海顺,汪凤泉. 喷油泵校正器技术参数测试方法研究[J]. 测控技术, 2006, 25(4): 33-36 |
| |
| 作者姓名： | 杜海顺 汪凤泉 |
| |
| 作者单位： | 东南大学,仪器科学与工程系,江苏,南京,210096;东南大学,仪器科学与工程系,江苏,南京,210096 |
| |
| 摘 要： | 针对喷油泵校正器的特点,介绍了对其两个技术参数预紧力和校正行程的测试方法.在小波消噪理论的基础上,给出了新的随尺度变化的阂值估计公式,采用小波软阈值消噪技术对力信号进行处理;在小波分解理论的基础上,提出了一种染噪斜坡信号的信号提取方法,并利用该方法对位移信号进行处理.经过小波消噪处理后的位移和力信号,再进一步的处理,可以得到很好的测量曲线,从而能够精确求出喷油泵校正器的预紧力和校正行程.
|
| 关 键 词： | 喷油泵校正器 预紧力 校正行程 小波变换 消噪 |
| 文章编号： | 1000-8829(2006)04-0033-04 |
| 收稿时间： | 2005-07-01 |
| 修稿时间： | 2005-07-01 |
Study on Technical Parameter Measurement Method of Fuel Injection Pump Corrector |
| |
| DU Hai-shun,WANG Feng-quan. Study on Technical Parameter Measurement Method of Fuel Injection Pump Corrector[J]. Measurement & Control Technology, 2006, 25(4): 33-36 |
| |
| Authors: | DU Hai-shun WANG Feng-quan |
| |
| Abstract: | The measurement method of fuel injection pump corrector technical parameter is introduced.Based on wavelet de-nosing theory,a new threshold estimate formula that changes following with scale change is presented,and the wavelet soft threshold de-nosing method to process force signal is adopted.A new pick-up method of the noise slop signal based on wavelet decomposition theory and using this method to process distance signal is also presented.Through wavelet de-nosing,then through further treatment,the distance signal and the force signal can get a better curve,thus can acquire pre-tightening force and correction stroke of fuel injection pump corrector accurately. |
| |
| Keywords: | fuel injection pump corrector pre-tightening force correction stroke wavelet transform de-nose |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
