High-range and resolution determinate mount and positioner.

摘要

The invention relates to a device for accurately positioning an object, such as a mirror 3 used to precisely aim a laser. The invention uses kinematic principles to hold the object. Here a 2-2-2 kinematic bipod system is employed. The invention uses three actuators 5 to position the object. Each actuator acts as a bipod restricting the object in two of its six degrees of freedom. Each actuator has three degrees of freedom it can transmit to the object. The actuator can rotate on its single-axis flexure 7 so that the actuator can rotate on one axis relative to support 4. Each actuator has a two-axis coincident flexure 8 on one end for allowing the object to be moved in two rotational degrees of freedom and the roller sleeve 50 allows a third rotational degree of freedom. Each actuator is positioned circumferencially about the central coordinate axis of the object to be moved, 120 degrees apart. Each actuator is powered by a stepper motor 6 which drives the differential roller screw accurately, providing translational movement to the system in the shortest length possible.