| With the development of information technology,the application of sensors is very extensive.Sensors are widely used in the fields of defense,aerospace,transportation,energy,electricity,machinery,petrochemicals,light industry and other industries,environmental protection and biomedical engineering.Although load cells have been widely used in various fields and most of them have been commercialized,there are still many problems to be solved for the research of multi-dimensional force sensors.This subject first constructed a square three-dimensional force sensor elastic body.The finite element simulation was performed on this elastic body.The sensitivity and modal characteristics of the elastic body were analyzed and compared with other structural characteristics of the elastomer.The structural elasticity of the elastomer is better than other structural elastomers.Two methods for the identification of the sensor model,the mechanism analysis method and the experimental modeling method are introduced.The application of the least squares method in the system identification modeling is described in detail.The experimental simulation verifies the practicability of nonlinear least squares method in system identification;introduces the reason why the sensor needs dynamic compensation and the principle of dynamic compensation;and introduces the application of zero-pole configuration method in designing dynamic compensation link,through MATLAB simulation.Get the output response curve of the unit step signal after the sensor compensation.It can be seen that the dynamic characteristics of the sensor are significantly improved after compensation.Several feasible methods for static and dynamic decoupling of multi-dimensional force sensors are described in detail.An automatic clamping device was designed and an experimental platform was set up.Static and dynamic characteristics experiments were performed on the constructed square three-dimensional force sensor. |
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