| 摘要 |
PURPOSE:To enable accurate tracking of a target by extremely narrowing the range in which an antenna lock point occurs with a second compensation by the angular speed component at an AZ axis corresponding to the angle of an EL axis through a speed detector mounted to an EL axis structural body. CONSTITUTION:In an EL axis control system (a), a rotating shaft of a servo motor 6 is connected to an EL axis 101 of an antenna 1 through a reduction mechanism or the like set at a proper ratio. A rotating shaft of a tachometer generator 7 is connected direct to a rotating shaft of the servo motor 6. The tachometer generator 7 is so set that signals proportional to the rotational speed of the servo motor 6 are fed back to a speed controller 5 for driving and controlling the servo motor 6. This is a control system widely known as servo control mechanism for controlling the rotary angular speed according to input signals. In an AZ axis control system (b), the relationship of a servo amplifier 9, a speed controller 10, a servo motor 12 and a tachometer generator 13 with the AZ axis 102 is the same with the EL axis. |
