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为了实现自动搜索目标,我们设计安装了一种自动搜索装置,从而实现了陀螺导引头的自动搜索、自动跟踪。 1.自动搜索原理在陀螺头的进动线圈中,若有一个频率与大磁铁旋转频率一致的正弦交变电流流通时,陀螺头就能产生进动。若陀螺能按预定的方向进动,即实现自动搜索。当陀螺转子轴偏离导引头几何轴时,电锁线圈切割永久磁铁的磁力线得到感应电动势,其幅值与导引头偏角的大小成正比,相位则取决于陀螺转子相对导引头几何轴的偏离方向。当陀螺转轴与导引头几何轴重合时,无感应电动势产生。因此利用电锁线圈中的感应电动势的变化,即可控制自动搜索。也就是说,只要能控制进动电流的大小,即可改变搜索角速度。
In order to achieve the goal of automatic search, we designed and installed an automatic search device, which enabled the automatic search and automatic tracking of the gyro seeker. 1. Automatic search principle In the precession coil of the gyro head, if there is a sinusoidal alternating current with the same frequency as the large magnet rotating frequency, the gyro head can generate precession. If the gyro can be pre-determined direction of precession, that is to achieve automatic search. When the gyro rotor shaft deviates from the geometrical axis of the seeker, the electric lock coil cuts the magnetic flux of the permanent magnet to obtain the induced electromotive force. The magnitude of the gyro rotor shaft is proportional to the magnitude of the seeker declination angle. The phase depends on the geometry of the gyro rotor relative to the seeker Deviation from the direction. When the gyro shaft and seeker geometric axis coincide, no induced electromotive force. Therefore, the use of electric locking coil in the induced electromotive force changes, you can control the automatic search. In other words, as long as you can control the size of the precession current, you can change the search angular velocity.