| 摘要 |
PURPOSE:To converge an object to be controlled at an angle corresponding to a command angle to stop the object by using an output of a signal comparator as one input of a divider and DC voltage corresponding to an AC exciting power supply as the other input. CONSTITUTION:The angle thetas of a command position 1 is converted into a position signal by a position (angle) signal convertion circuit 2, a position command signal Vs is applied to one input side of a multiplier 15 and the voltage signal REF of the AC exciting power supply 7 is applied to the other input. A signal comparator 3 outputs an AC signal proportional to the difference between a signal Vx and an AC electric signal corresponding to the angle of a radar antenna and sends the AC signal to a demodulating circuit 10. The difference signal is applied to one input side of the divider 16 as a DC signal DELTABE by the demodulating signal 10, the voltage signal REF of the power supply 7 is converted into a DC signal proportional to the voltage and phase by a demodulating circuit 17 and the DC signal is applied to the other input side as DC voltage VR corresponding to the AC exciting power supply. The angle thetaL of the antenna 14 is converged and stopped to/at a value corresponding to a command angle thetas by inputting the output VR of the divider 16 to a signal conversion circuit 4. |
