教授 博士生导师 硕士生导师
主要任职: 机械工程学院院长、党委副书记
性别: 男
毕业院校: 大连理工大学
学位: 博士
所在单位: 机械工程学院
学科: 机械电子工程. 测试计量技术及仪器. 精密仪器及机械
办公地点: 辽宁省大连市大连理工大学机械工程学院知方楼5027
联系方式: 辽宁省大连市大连理工大学机械工程学院,116023
电子邮箱: lw2007@dlut.edu.cn
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论文类型: 期刊论文
发表时间: 2013-11-01
发表刊物: PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE
收录刊物: SCIE、EI、Scopus
卷号: 227
期号: 11
页面范围: 2456-2466
ISSN号: 0954-4062
关键字: Dynamic measurement; six-component force; piezoelectric balance; signal processing
摘要: Dynamic six-component force measurement is of great significance in the area of aerodynamics. Although a large number of previous experiments had been carried out to study the static characteristics of wind tunnel balance, these test methods are difficult to apply to the dynamic measurement. In this article, a new mechanical device is developed to simulate the hatch open motion with wind loads, and then the dynamic loads is measured by the novel piezoelectric balance. Owing to the dynamic motion characteristics of nonlinearity, nonstationarity, and internal coupling, an effective control system, measuring principle and signal processing method have been proposed. A combined wavelet analysis and EMD adaptive algorithm with multi-sensor data fusion method is studied to process the complicated force signal. In addition, the inertial force of the hatch is eliminated and a force curve changing with angle and time has been obtained. Furthermore, dynamic experimental results demonstrate that the mechanical system and signal processing method can effectively control the hatch open motion and extract the feature of six-component force.