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中文摘要: 针对电液伺服阀在极端低温下温漂大的问题，以＋40℃时电液伺服阀初始零偏为基准，采用线性回归方法分析了某型射流管伺服阀不同温度的零偏试验数据，得到了极端低温下的伺服阀温漂与＋40℃时初始零偏的数学关系。分析与试验结果表明：极端低温时射流管伺服阀的温漂与＋40℃时的初始零偏存在非常显著的线性关系。温漂与电液伺服阀制造与装配工艺过程密切相关，与结构及其装配不对称有关。电液伺服阀结构上的微观不对称现象，在极端低温下显现出来，尤其是呈现出较大的温漂。降低温漂的主要措施是提高电液伺服阀结构与装配的对称性，降低初始零偏。
Abstract:Aiming at the outstanding problem of temperature drift of the jet pipe servo valve under extremely low temperature, the initial null bias of the jet pipe servo valve at +40°C is an important factor affecting the temperature drift at extremely low temperature. Based on the null bias experimental data under the different temperatures of the jet pipe servo valve, the mathematical relationship between the temperature drift of the servo valve at extremely low temperature, the initial null bias and temperature were obtained by linear regression analysis. The results show that there is a very significant linear relationship between the temperature drift of the jet pipe servo valve under extremely low temperature and its initial null bias, which further illustrates that the temperature drift in the servo valve is caused by the asymmetry in the servo valve. The more asymmetry in the servo valve, the greater the temperature drift produced at extremely low temperatures. Therefore, the main measure to reduce the temperature drift is to reduce the null bias, that is, to ensure the symmetry of the servo valve.
keywords: jet pipe servo valve extreme low temperature temperature drift null bias linear regression
文章编号：20200112 中图分类号： 文献标志码：
基金项目:上海航天科技创新基金（SAST2017093）；国家自然科学基金资助项目(51775383)
| Author Name | Affiliation |
| YIN Yaobao | School of Mechanical Engineering, Tongji University |
| LI Cong | School of Mechanical Engineering, Tongji University |
引用文本：
訚耀保,李 聪.极端低温下电液伺服阀温漂特性分析[J].飞控与探测,2020,(1):80-85.
訚耀保,李 聪.极端低温下电液伺服阀温漂特性分析[J].飞控与探测,2020,(1):80-85.