Virtek Vision International Inc.

Prakash Naidu

Andrew A Goldenberg

Nenad M Kircanski

A high precision positioning device includes an end effector and a platen spaced therebelow for receiving a workpiece. One of the end effector and the platen is moveable in the X-Y plane. One of the end effector and the platen is moveable in the Z direction. The device includes senors for sensing the position of the end effector in the X, Y and Z directions relative to the platen. The apparatus includes a control system for controlling the movement of the end effector relative to the platen and adjusting the position of the end effector relative to the X. Y and Z position as sensed by the sensors. Preferably the platen is generally parallel to the X-Y plane and the Z direction is normal to the platen. Preferably the control system uses a position, velocity and acceleration control system for controlling the movement in the X and Y direction and an impedance control system for controlling the movement in the Z direction. The method of operating the high precision positioning device uses a host computer and an embedded computer. The method includes the steps of receiving and checking data; sending and decoding the checked data and determining when a move command appears; instructing a move command and determining set-point data for the move command; sending set-point data to regulator task module and sending data from the positional sensors to the regulator task module; determining the control parameters in the regulator task module and activating the motors to move the end effector.

Growing community of inventors

Bengaluru, India

Prakash Naidu