Antenna dish system having constrained rotational movement

摘要

An antenna dish system for tracking satellites includes an antenna dish having peripheral edges. A tripod stand has first and second front legs and a rear leg. An apex is formed by the interconnection of the two front legs and the rear leg. A first linear actuator is mounted on the first front leg and has an output shaft connected to a peripheral edge of the antenna dish. A second linear actuator is mounted on the second front leg and has an output shaft connected to a peripheral edge of the antenna dish. A universal joint is positioned at the apex of the tripod stand and mounts the antenna dish to the tripod stand. The universal joint constrains rotation of the antenna dish about the normal axis, but allows pitch and yaw motion of the antenna dish. A controller is connected to the first and second linear actuators for controlling their output shafts and enabling controlled motion of the antenna dish, such as for tracking satellites.