Piezoelectric type measuring device of control surface hinge moment

Abstract

The invention belongs to the piezoelectric type sensor field, particularly to a piezoelectric type measuring device of control surface hinge moment. The measuring device employs a piezoelectric quartz crystal group with a double electrode structure and integrates an X0 cutting type piezoelectric quartz crystal group into an internal portion of an aerofoil. The measuring device comprises a control surface, shafts, screws, a machine body, a right covering plate, pre-tighten bolts, the X0 cutting type quartz unit crystal group with the double electrode structure, a lead, fixing bolts and a left covering plate. The X0 cutting type piezoelectric quartz unit crystal group is formed by an upper X0 cutting type quartz crystal wafer, a lower X0 cutting type quartz crystal wafer, a front semi-annular-shaped extraction electrode, a rear semi-annular-shaped extraction electrode, an upper grounding electrode and a lower grounding electrode have same shapes. The piezoelectric type measuring device of the control surface hinge moment has the advantages of being simple in structure, good in manufacturability, good in stability, convenient to use, small in size, capable of being applied to occasions of an aerodynamics wind tunnel experiment research and aircraft development and having more applications in fields of aeronautics and astronautics and defense military projects.

Description

technical field [0001] The invention belongs to the field of piezoelectric sensors, in particular to a piezoelectric rudder surface hinge moment measuring device, which can be applied to aerodynamic wind tunnel experimental research and aircraft development occasions, and has many applications in the fields of aerospace, national defense and military industry application. Background technique [0002] In the field of traditional rudder surface hinge moment measurement, the strain gauge hinge moment measurement device is generally used for actual measurement in a wind tunnel. The strain-type rudder surface hinge torque measurement device is based on the physical changes of specific materials during the deformation process, such as resistance, and has the advantages of light weight, fast response, and small volume. Because the strain gauge has the characteristics of simple structure, flexible layout, high sensitivity, and good stability, various sensors using strain gauges ha...

AI Technical Summary

Problems solved by technology

In dynamic force measurement, if the dynamic performance of the force sensor is not ideal, it will not be able to reproduce the law of the force value signal changing with time quickly and without distortion, which will bring large measurement errors

In addition, the strain gauge measuring device is suitable to be arranged at the connection between the rudder blade and the wing, and it is easy to damage the rigid connection between the rudder blade and the wing, resulting in a large additional deformation during the wind tunnel test, which will bring great influence to the measurement results. error

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