| 摘要 |
It is an object of the present invention to provide a wide range azimuth (AZ) driving system for an antenna which has a simple structure and enables costs to be lowered and a producing time to be short. A first worm reducer which is connected to a worm shaft of a motor and a second worm reducer which is intermittently driven by the worm shaft and a clutch are provided, and gears of the two worm reducers engage with a large gear which is arranged to an antenna yoke. Further, one motor can arbitrarily control backlash and both wide range driving at a high speed and tracking driving with high precision are simultaneously possible by properly controlling the clutch and the motor.
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