Research On Load-distribution In Three-axis Of Piezoelectric Sensor

In the control system of modern machinery and manufacturing equipment, the sensing and measuring devices are essential components. Piezoelectric technology, which is an excellent test of dynamic testing technology, has been the rapid developed in the past few decades, and it has been successfully applied to many areas of national defense and construction in the people’s livelihood. During practical applications, especially in some large manufacturing equipment, its operation will be accompanied by a huge force vector, usually these forces are more than1OKN, and then traditional sensors cannot meet the supporting measurement requirements, so vigorously measurement techniques must be considered to make real-time measurement of these loads.Among previous studies, many force measuring systems on the strong value are applied to engineering studies, while basic research for a single set of sensors is limited. Piezoelectric three-axis force sensor is basic unit of piezo-based test system, analysis its structure and fully discusses the basic principles of piezoelectric three-axis force sensor, including the core component-quartz crystal, quartz group composition theory and the basic structure and composition of traditional architecture dynamometer. Analysis the Piezoelectric three-axis force sensor in hand using the finite element software, get the curves between some critical dimensions of the force sensor and its stiffness, which make sense to improve the ability of piezoelectric measurement test system.In this paper, take the sub-parallel shunt measurement set as the starting point, design and processing offloading cylindrical device with its shape similar to the three-way force sensor using Carbon steel C45, combined with the output voltage of the sensor with several different arrangements, conduct an experiment about piezoelectric three-axis force sensor for axial and lateral load, then get the axial and lateral load-sharing ratio of the sub-set of different sizes as well as the different form of sub-carrier device. The test data were analyzed to identify quantitative relationship between the sub-carrier devices and sensors, then according to the sub-carrier ratio formula, provides a theoretical basis for designing pre-set ratio of dynamometer by selecting the appropriate parameters, avoid the previous design blindness and improve the overall efficiency of the dynamometer design and to optimize the dynamometer. Finally, analysis of the relationship between the axial direction and the transverse carrier offloading, and discuss how to solve their contradiction.