Research on Calibration Method of Test Platform of Seismic Reduction and Isolation Device Based on Three-Dimensional Force Sensor

Aiming at the problem of low calibration accuracy of large-scale isolation device testing machine, by comparing the advantages and disadvantages of existing testing machine calibration methods, a new idea of using multi-component force measurement system based on three-way force sensor to calibrate the testing machine is proposed. By transforming the complex force situation of the test machine of the isolation device into the form of six-dimensional force, a theoretical model for measurement by multi-component force measurement system based on three-direction force sensor is established.The calculation formula of the eccentric position of the force point and the real-time force is derived, and the coupling between the dimensions of the force measurement system is briefly analyzed. The results show that the calibration method is feasible to improve the force calibration accuracy of large-scale testing machine.