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Study Of Parallel Principle Of Piezoelectric Sixdimensional Heavy Force Sensor And Structural Design

Posted on:2016-02-24Degree:MasterType:Thesis
Country:ChinaCandidate:Y Q LiFull Text:PDF
GTID:2308330464471823Subject:Mechanical engineering
Abstract/Summary:PDF Full Text Request
As an important basic equipment, the heavy-load manufacturing equipment, which can enhance the manufacturing level, is widely used in the manufacture of large components of nuclear power, shipbuilding, chemical, defense and other areas. The heavy-load operation equipment realizes coordinated operations together with the heavy-load manufacturing equipment. The heavy-load operation equipment is currently the world’s largest heavy-duty multi-dimensional industrial robot, is complex equipment highly integrated mechanical technology, electrical and hydraulic technology. Compared with the processing equipment, the heavy-load operation equipment has many characteristics such as large inertia, heavy bearing load, large impact force, multi-dimensional of freedom and strong multi-dimensional force position handling capacity. In order to achieve accurate, efficient and energy saving coordinated operation of the heavy-load manufacturing equipment and the heavy-load operation equipment control system, it is necessary to accurately measure the six-dimensional space force of the heavy-load operation equipment. Under heavy load conditions, the precise dynamic measurement of the six-dimensional heavy load is a key technology to the control system of the heavy-load operation equipment. Compared with advanced countries, in China,the heavy-load operations equipment in multi-dimensional of freedom is entirely dependent on import and because the related basic research is very weak, the backward technology of the operating equipment seriously hampers the improvement of the manufacturing technology of large and complex components.Funded by the National Natural Science Foundation(51205165), the paper focuses on the explore in key technologies of the heavy-load six-dimensional sensor based on piezoelectric quartz, mainly including the study of the parallel offload principle of the piezoelectric six-dimensional heavy-load sensor and presenting a spoke heavy-load six-dimensional sensor, which is based on eight pivot layout, and parallel offload principle and make the use of piezoelectric quartz as force-sensitive components. Specific tasks include the following items:The paper presents a spoke six-dimensional heavy-load sensor based offload parallel principle and eight fulcrum layout and introduces the piezoelectric mechanism andpiezoelectric effect equation. Decoupled equation of the spoke six-dimensional heavy-load sensor is given.This paper introduces the Principle of Real Work and makes use of the principle to derive the formula of axially parallel offload, lateral parallel offload, torque parallel offload of the six-dimensional heavy-load sensor and studies the principle of moment offload, and establish the relationship between the offload parallel ratio and the structural parameters of the sensor, with the materials mechanics and elasticity.The paper makes the finite element simulation analysis about the load and the affect,which the main structural parameters of one branch of the spoke heavy-load six-dimensional sensor have on parallel offload ratio. The main factors include the load value, the thickness of the sensor cap, the thickness of the sensor base, the height of the offload ring, and the cross-sectional area ratio of the offload ring and the force-sensitive element with ANSYS software. By changing the size of the corresponding factor, the finite element simulation analysis of the affects which the factors have on the sensor offload ratio and draw out the pictures which show us the influence trends between the factors and the offload ratio of the sensor. Effectively guide the research and design and manufacturing operation of the sensor.
Keywords/Search Tags:piezoelectric quartz, six-dimensional heavy-load sensor, offload parallel principle, the Principle of Real Work, Finite Element Analysis
PDF Full Text Request
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