磁-重力耦合悬垂平衡的全向倾角传感器优化设计OA

To address the issues of limited measurement directions and complex structures in existing magnetic-effect tilt sensors,a suspended,gravity-balanced omnidirectional inclinometer was proposed based on a magneto-gravitational coupling design.Finite element simulations were used to determine the optimized engineering parameters for the permanent magnet dimensions and the detection air gap.Under small perturbations,the natural restoring process was analyzed to evaluate the influences of ball material properties and contact surface geometry on the contact behavior,which guided the optimization of the spherical crown concave structures and ball material selection.Calibration experiments were conducted to verify the accuracy of the simulation models.Through systematic characterization,mapping models were established between the X、Y-axis magnetic field signals and displacement,and between displacement and inclination angle.Additionally,an analytical model was constructed between the Z-axis magnetic field and the inclination angle.The combination of these models enabled simultaneous estimation of inclination angle θ and azimuth angle φ.To fully exploit the response characteristics of each magnetic field component across different tilt angle ranges,a segmented tilt angle calculation strategy was proposed.Validation ex-periments show that within the measurement range of-20° to 20°,the maximum tilt angle error under vari-ous azimuth angles does not exceed±0.3°.