Arm Based Automatic Control System of Nano Positioning Stage for Micromanufacturing

A microcontroller based control system to drive the Physik Instrumente (PI ) piezoelectric ultrasonic nano-positioning (PUN) stage for a micro-factory has been proposed by the author. The tuning parameters of the PI Line Controller are chosen such that the PUN stage shows optimum step response. The microcontroller i.e. LPC2478R provides the user with the choices of operations on the 3.2” QVGA LCD screen and the choice can be made by a 5-key joystick. The PUN stage moves in different geometrical patterns as chosen by the user. The stage is placed in the workspace of the Clark-MXRR,Inc. CPA-2101 femto-second laser. Different patterns are made on the material in question. As compared to the previous works in this area, the user is given the power for position control, real time tracking, and trajectory planning of the actuator. The user interface has been made very easy to comprehend. The repeatability of tasks, portability of the assembly, the reduction in the size of the system , power consumption and the human involvement are the major achievements after the inclusion of a microcontroller.