| 摘要 |
PURPOSE:To reduce the weight of a controlled system by forming given conditions logically through a switching control circuit and then controlling a changeover switch. CONSTITUTION:Under the condition of a speed operation instruction Li1, the changeover switch SW1 is placed at a position ON. Consequently, a speed command signal thetaVS from a speed command signal generating circuit 1 is inputted to the signal comparing circuit 3a of a speed system. Then, an rader antenna 10 is driven to turn at an angular speed corresponding to the speed command signal thetaVS. An angle difference signal thetaE, on the other hand, is inputted to a signal converting circuit 5 and an angle difference discriminating circuit 12. This circuit 12 converts the inputted angle difference to input a condition L when the position angle thetaL of the antenna 10 is 0-180 degrees for the command position angle thetaS assumed to be 0 degree, or a condition H when 180-360 degrees (0 degree) to the switching control circuit 13 as an output signal Ltheta. |
