| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a radiator revolution number control device of a radar antenna which controls the device to a desired revolution number according to an operation state.SOLUTION: A three-phase motor M is in operation based on a radiator 2 of a radar antenna rotated by the three-phase motor M, a three-phase inverter 3 for controlling a rotation of the three-phase motor M; an operation state acquisition part 41 for detecting an operation state of the three-phase motor M; a rotation number detection part 42 for detection a rotation number of the three-phase motor M; an operation state of the three-phase motor, and the rotation number of the three-phase motor M. When the rotation number of the three-phase M is equal to or more than a desired value, a brake signal is transmitted to the three-phase motor M so that its rotation number becomes equal to or less than the desired value, and when the three-phase motor M is in non-operation and the rotation number of the three-phase motor is equal to or more than zero, a signal control part 43 for transmitting the brake signal is provided to control and suppress the rotation of the three-phase motor M.</p> |
