Study on a Pan - tilt Control Technique for the Airship Camera Orientation
نویسندگان
چکیده
A pan-tilt control technique for the camera orientation of the airship is proposed. This technique is constructed by combining the airship states and the error of the image centre as a feedback. For the ground target coordinates testing system installed in airship, a two dimension pan-tilt is used to drive the camera tracking the ground target in order to catch the image of the measured target reliably. The control method of a double adaptive varying velocity PID with dead zone is proposed. Based the movement characteristic of the airship, the relationship between the movement of the target tracking and the angular velocity of the pan-tilt is analyzed; the control algorithm of the angular velocity of the pan-tilt is designed. This method make the camera continue to monitor the testing region and get the original image of the target in time. The result of experimentation shows that the method can track the ground target rapidly and steadily. Copyright © 2013 IFSA.
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