Abstract: A servomechanism having an actuator configured to convert electrical energy into mechanical energy and a controller configured for electrical connection to a power source. A power cable electrically connects the actuator and the controller. The power cable is configured to transmit electrical current from the controller to the actuator. At least one transducer is coupled to the actuator. The transducer is electrically connected to the power cable and is configured to transmit data over the power cable.

Abstract: A servomechanism having an actuator configured to convert electrical energy into mechanical energy and a controller configured for electrical connection to a power source. A power cable electrically connects the actuator and the controller. The power cable is configured to transmit electrical current from the controller to the actuator. At least one transducer is coupled to the actuator. The transducer is electrically connected to the power cable and is configured to transmit data over the power cable.

Abstract: A labeling machine servo motor to drive the label feed is combined with a control system which tracks the surface of the item to be labeled wherein all of the parameters affecting the placement of the label are instantly programmable. Label motion starting position, label acceleration and deceleration rates, label speed, and label stop position are all under program control and may be adjusted within the control system or by an external device utilizing a network, a serial interface, or a discrete input/output interface to the control system. In the preferred embodiment, the control system comprises a servo controller easily programmable and reprogrammable in the necessary parameters to effect more accurate and faster label application.

Abstract: A labeling machine servo motor to drive the label feed is combined with a control system which tracks the surface of the item to be labeled wherein all of the parameters affecting the placement of the label are instantly programmable.

Abstract: A brushless AC servo motor control and modified motor to minimize the rotational acceleration and deceleration of a semiconductor wafer during processing steps where fluid is applied in a thin coating on the wafer. The control utilizes sine and cosine encoder outputs of single cycle and multiple cycle per revolution to calculate motor shaft position by an inverse tangent calculation of sine and cosine ratios. Resolution of motor shaft position is greatly improved as is rotational velocity control. In response to a prediction of desired shaft position in comparison with actual position the three field currents are adjusted to change the torque applied to the rotor and shaft. In the semiconductor wafer manufacturing application the motor shaft is modified to permit vacuum attachment of the wafer to the disc that rotates with the shaft.