Electrically Adjustable Antenna Control System and Method

An electrically adjustable antenna control system comprising a controller, an actuation mechanism controlled by the controller, and a feedback loop connected to both of the controller and actuation mechanism, wherein,

• the controller comprises a control board and its embedded program;
• the actuation mechanism includes a DC geared motor controlled by the control board and the embedded program and an electrically adjustable antenna phase shifter driven by the geared motor;
• the feedback loop has a travel plate electrically coupled to both of the control board and the DC geared motor and a counter device installed on the geared motor;
• the DC geared motor is connected to the antenna phase shifter via a drawbar having a stop block;
• there are two travel switches on the travel plate, and each travel switch is provided with a contacting point;
• the control board sends commands to the DC geared motor to drive the motor to rotate and in turn, cause the movement of the drawbar;
• the stop block moves between the two travel switches of the travel plate;
• when the stop block touches the contacting point of a travel switch, the motor begin to rotate in a reverse direction and the counter device starts counting;
• and when the stop block touches the contacting point of the other travel switch, the counter device stops counting, and the total count value is returned to the control board;
• by using value of the counter device, the control board calculates required revolutions of the motor to move to a corresponding location.