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| Number | Title | Issue Date |
| 7368887 | Servo control device and method of adjusting servo system A servo control device that displays, by a two-dimensional image, evaluation of control precision of a servo system, includes: an instruction unit that instructs a position instruction having periodicity; a unit that records a track of position data based on a posit... | 05/06/2008 |
| 6940252 | DC motor control method and apparatus A DC motor control method and apparatus for reducing time required for deceleration without degrading positioning accuracy. In a device which drives a mechanism by using a DC motor as a power source, in deceleration of the DC motor, when the mechanism arrives at a p... | 09/06/2005 |
| 5990586 | Multi-actuator having position controller Feedback potentiometer-type servoactuator uses the ring gear of a planetary gear system to drive the wiper across a resistive arc of less than 360° where the actuator has a travel of multiple turns. The ring gear is supported by spaced struts in the actu... | 11/23/1999 |
| 5214364 | Microprocessor-based antenna rotor controller Apparatus and method for automatically controlling the rotation of an angularly positionable antenna from one angular position to a desired new angular position. The disclosed technique provides the user with a list of destination indicia, each of which c... | 05/25/1993 |
| 4680522 | Radiation path axis directing system A radiation path directing system, such as sighting means 10, (FIG. 1) has an imaging detector (not shown) below the apparatus has a field of view centered on a sightline deflected from the vertical axis 22 by mirror 12 rotatable in elevation about axis 1... | 07/14/1987 |
| 4403181 | Control system for stopping spindle at predetermined rotational position A system for stopping a spindle, which is provided in a machine tool, in such a manner that a specified point on the spindle is stopped at a predetermined rotational position. The system includes device for detecting the direction of spindle rotation. Whe... | 09/06/1983 |
| 4291262 | Servo positioning apparatus While a motor shaft (13) is moving from a previous position to a present command position, the number of steps between the present command position and a new command position is calculated. After the shaft (13) reaches the present command position, the sh... | 09/22/1981 |
| 4263539 | Automatic antenna positioning apparatus Apparatus for rotating an antenna to a predetermined position and maintaining said position is disclosed. The system comprises an antenna position sensing signal source, a desired position signal source, both of which provide analog signals, position comp... | 04/21/1981 |
| 4138633 | Position control apparatus for circular tables An angular position control apparatus for a machine tool circular table comprises a circuit for discriminating whether a command from a command register is such that the output from an absolute position detector for the table passes over the figure zero a... | 02/06/1979 |
| 4131840 | Circuit arrangement for setting a rotatable type carrier over the shortest path of rotation A circuit arrangement is provided for setting a type carrier, having character types arranged on the periphery thereof, from a present setting position to a new setting position over the shortest path of rotation, via a stepping motor, by means of pulse t... | 12/26/1978 |
| 4117386 | Digital continuous potentiometer servo feedback element A servo system feedback element including a potentiometer for providing a follow-up output having a waveform wherein the follow-up output increases linearly to a maximum value and decreases linearly to zero resulting in smooth operation of the servo for t... | 09/26/1978 |
