Harmonic Drive
Camera Head Pan and Tilt Axes
Sub-assembly
Hollow-shaft actuator
The smooth running characteristics and compact design make FHA hollow-shaft actuators ideal for the pan and tilt axes of camera heads. This design example shows a camera head used in the security field for border observation. Similar designs are also used attached to remote camera booms for sport coverage. The cables from the camera pass through the hollow-shaft of the tilt-axis actuator (axis 2).
The hollow-shaft of the pan-axis actuator (axis 1) is used for the camera cables as well as the cables from the tilt-axis actuator. The small envelope and light weight of the FHA actuators means that this arrangement can also be used for airborne camera mounts, or for stabilised camera platforms mounted on moving vehicles. This basic design is also used for satellite tracking, where the extremely smooth low speed output of the actuator is a further important advantage.
