位标器陀螺广泛应用于红外导引头中，为满足对其研究的需要，从位标器陀螺中的电磁作用入手，以旋转和进动线圈的工作为重点，提出了一套建模方法。以此模型为基础对位标器的工作过程进行了实时仿真，仿真结果说明了陀螺转子归零漂移的规律以及旋转磁场耦合对进动跟踪性能的影响，与实际位标器陀螺的测试结果相一致，表明了这种建模方法的可行性。%To satisfy the need of study on the seeker gyro which is widely used in infrared seeker,proceeding from electro⁃magnetic effect in the seeker gyro,a method of modeling is proposed and the study emphasis is on the spin coils and precession coils. The real⁃time simulation of the seeker's working process was carried out based on this model. The law of zero drift of gyro rotor and the effect of spin magnetic field coupling on precession tracking performance were illustrated by simulation results, which were consistent with those achieved in actual measurement of seeker gyro. The feasibility of the modeling method was vali⁃dated by the simulation.
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