Linear motor driven six-degree-of-freedom vibration simulation device

Abstract

The invention discloses a six-degree-of-freedom vibration simulation device driven by a linear motor. The six-degree-of-freedom vibration simulation device comprises a six-degree-of-freedom parallel mechanism, a linear motor driving mechanism and a six-degree-of-freedom measurement control system. The linear motor driving mechanism serves as a static platform of the six-degree-of-freedom parallel mechanism at the same time, and a movable platform of the six-degree-of-freedom parallel mechanism is located at the upper end of the static platform and connected with the linear motor driving mechanism through six movement branch chains. The six-degree-of-freedom parallel mechanism is high in design rigidity, high in bearing capacity and stable in overall structure. The six-degree-of-freedom measurement control system is composed of a linear grating sensor, an accelerometer and a controller so as to achieve real-time feedback of the motion position of the six-degree-of-freedom parallel mechanism and motion control of the linear motor driving device. The six-degree-of-freedom vibration simulation device can be used for testing the dynamic response characteristics of the sensor under complex multi-degree-of-freedom vibration excitation, the problem that in the prior art, a six-degree-of-freedom vibration simulation device is small in working space is solved, and the precision, efficiency and range of sensor testing are improved.

Description

technical field [0001] The invention relates to the technical field of vibration test equipment design and testing, in particular to a six-degree-of-freedom vibration simulation device driven by a linear motor. Background technique [0002] Vibration measurement is widely used in mechanical processing, aerospace, precision machining and other fields, and correspondingly, there are more and more types of sensors used for vibration measurement. In order to test whether the performance of the vibration sensor meets the corresponding requirements and ensure the validity of the measurement data, it is necessary to improve the vibration simulation device for vibration excitation. The main task of the vibration calibration device is to provide excitation acceleration for the vibration sensor under test. It is often used to provide multi-degree-of-freedom vibration excitation under different motion trajectories, to calibrate and verify the functional performance of sensors in comple...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the problems in the prior art that the mechanical structure occupies a large space and the working space of the vibration table is small, and provides a new six-degree-of-freedom vibration simulation device driven by a linear motor

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