In order to solve the unknown parameter problem of magnetic focusing torque sensor model and achieve more ac-curate measurement,based on the mechanism analysis of this sensor,a mathematical model and a system model under non-zero initial conditions were established,and the identification parameter matrix was determined.A parameter identification method was proposed combining the prediction error method and adaptive particle swarm optimization(PSO).The sinusoidal excitation cali-bration experiment system was set up to verify the method.The results show that the method can effectively identify the sensor pa-rameters,and the sensor model obtained has a high precision,which provides a reliable basis for dynamic characteristic analysis and error compensation.
维普
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