摘要
针对飞机等大翼展结构的结冰探测需求,基于薄膜式阻抗测量阵列进行区域结冰探测方法研究。依据弛豫极化原理,结合有限元仿真手段,对不同结构特征复阻抗测量电极的结冰探测灵敏度进行建模分析,明确电极形态的优化设计原则与适用场景。针对冰介电特性随温度漂移造成的冰厚测量偏差问题,结合冰介电损耗特性与温度间的关系,提出阻抗冰厚测量的温度漂移自校正模型,实验结果表明该模型可将温漂导致的测量误差减少约77%。在此基础上,建立薄膜式阻抗测量阵列的区域结冰探测方法,分析阵列中L型和T型电极布局的冰厚测量误差来源,并在多组区域覆冰实验中较完整地反演了真实覆冰场景,实验中冰厚测量平均误差低于0.27 mm,具有一定工程应用价值。
In order to meet the icing detection needs of aircraft with large wingspan structure, this paper is based on thin-film impedance measurement array for regional icing detection method. Based on the relaxation polarization principle and finite element simulation, the icing detection sensitivity of complex impedance measurement electrodes with different structural characteristics is modeled and analyzed, and the design principles and application scenarios of the electrode form are clarified. To address the problem of ice thickness measurement bias caused by ice dielectric properties drifting with temperature, a temperature drift self-correction model for impedance ice thickness measurement is proposed by combining the relationship between ice dielectric loss properties and temperature. On this basis, a thin-film impedance measurement array for area icing detection is established, and the sources of ice thickness measurement errors for L-and T-type electrode layouts in the array are analyzed, and the real icing scenarios are more completely inverted in several groups of area icing experiments, and the average error of ice thickness measurement in the experiments is less than 0.27 mm, which has certain engineering application value.
作者
李洪宇
桂康
葛俊锋
叶林
Li Hongyu;Gui Kang;Ge Junfeng;Ye Lin(School of Artificial Intelligence and Automation,Huazhong University of Science and Technology,Wuhan 430074,China)
出处
《科学技术创新》
2022年第29期179-182,共4页
Scientific and Technological Innovation
基金
国家自然科学基金(62101196)
中国博士后科学基金(2021M691138)项目资助。
关键词
区域结冰探测
阻抗测量阵列
温度漂移自校正
area icing detection
impedance measurement array
temperature drift self-correction
