Abstract: The present invention relates to an apparatus and method for generating digital electrical signals which are representative of the angular position and rotational velocity of a rotatable shaft or similar movable mechanical component in a servomechanism. In particular, the present invention utilizes oversampling techniques to create an accurate, flexible and responsive method for determining shaft position on a high speed motor. The present invention also includes methods for overcoming deadtime losses and velocity lag.

Abstract: The present invention provides a torque loop control method for servomotors utilizing discontinuous pulse width modulation that incorporates measuring the power factor in real time. Also included is a sine wave generator for software-based spectrum analysis.

Abstract: A modular current sensing system for a servo control system that includes a magnetic core with an open center portion and a connection plate that includes at least three wire connectors, wherein the wire connectors are capable of connecting at least two wires electrically in series. The system also includes a plurality of wires, including a first wire with a first end and a second end, wherein the first end of the first wire is electrically connected to a first power source, and the second end of the first wire is connected to the connection plate at the first wire connector and wherein the first wire passes through the open portion defined by the magnetic core at least once. A first motor current flowing through the first wire induces a core current to flow in the magnetic core, causing the magnetic core to emit a magnetic field. A Hall effect sensor detects the magnetic field, produces an output current, and delivers the output current to a control device within a servo control system.

Abstract: Methods of filling empty areas in a layout simulation. In one embodiment, a method of simulating an integrated circuit layout is disclosed. The method comprises automatically identifying empty areas in a layout that can be filled and generating fill patterns to fill the empty areas.

Abstract: A translation tool for the design of integrated circuits. In one embodiment, a method comprises translating select device parameters in a first database associated with a first process to device parameters in a second database associated with a second process and displaying a design based on the device parameters in the second database.