Abstract: The invention relates to a positioning system which is suitable for micrometric regulating valves. The invention comprises a micro-regulating valve which is connected to the shaft of a servomotor by a flexible coupler and which is fixed to the same using a support. The aforementioned motor is, in turn, coupled to a potentiometer which transmits the position of the shaft of the motor and, consequently, of the rod of the valve to a control system which compares a signal received from an external control system with the position of the value, the position of the valve being corrected with a movement of the motor. In this way, a quick and precise positioning system can operate at high pressures and with very low flow rates.

Abstract: An electric mirror control device provided with a proportionality constant conversion means for converting the proportionality constant of a detection output voltage to the angle of a mirror surface to be positive or negative. When an up-down sensor and a right-left sensor for detecting the angle of the mirror surface have a plurality of specifications, each of which has a different proportionality constant of the detection output voltage to the angle of the mirror surface, controller determines the specification of the angle sensors based on whether the proportionality constant of the detection output voltage output via the proportionality constant conversion means is positive or negative, and controls an up-down motor or a right-left motor in accordance with the determined specification stored in advance.

Abstract: 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 position feedback of a servo system according to the position instruction; and a first drawing unit that draws position data based on the position feedback, data before a quarter cycle or after a quarter cycle of the position data or position data based on the position instruction before a quarter cycle or after a quarter cycle, on a two-dimensional plane including orthogonal two axes, as the axis data of the orthogonal two axes respectively.

Abstract: 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.degree. where the actuator has a travel of multiple turns. The ring gear is supported by spaced struts in the actuator housing.

Abstract: 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 corresponds to a geographic location. The user is also provided with a selector for choosing one or more of the available destination indicia. Once the user selects a destination index, a retrieval system automatically retrieves the appropriate geographic reference location from a destination indicia table stored in memory. A calculation is then automatically performed to determine the desired angular position of the antenna with respect to an arbitrary reference angle. The antenna rotor shaft is then energized to rotate the shaft to the desired angular position.

Abstract: 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 13 in yoke 14 and directed in azimuth by rotation of the yoke about orthogonal azimuth axis 22. To enable rapid changes in sightline azimuth and/or if the yoke assembly has a limited extend of rotation the mirror 12 can be flipped about axis 13 to divert the sightline azimuth by 180.degree. insteads of moving the complete (and possibly heavy) yoke assembly. In one simple construction a yoke rotation of .+-.90.degree. and mirror flipping enables a 360.degree. sightline to be described. Preferably conditions are defined relating current yoke position and demanded sightline azimuth (FIG. 5) to determine whether the sightline is achieved by yoke rotation with or without mirror flipping.

Abstract: 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. When the spindle arrives at a region where it is to be controlled in order to stop at the predetermined rotational position, a position deviation signal is applied as the input signal of a speed control loop for controlling the rotation of the spindle. This signal turns the specified point on the spindle to the predetermined rotational position, in the same direction in which the spindle is rotating, on the basis of the direction signal from the detecting means. That is, the specified point on the spindle is rotated to the predetermined rotational position in a direction which is the same as the direction of rotation during tool operation.

Abstract: 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 shaft (13) is driven to the new command position in accordance with the calculated number of steps.

Abstract: 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 comparator means, and antenna drive means. Comparison of the desired position signal and actual position signal generates a direction relay signal and an antenna rotor drive relay signal which together activate the antenna rotor drive means for rotation in the proper direction to the desired position. Circuitry is included for automatic operation in conjunction with equipment utilizing predetermined channels, such as a radio or television receiver, and for manual override or testing and calibration of the automatic operation.

Abstract: 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 and an angular converter for converting a present or stopped position of the table detected by the position detector into an angular value. The output of the angular converter is compared with the command to drive the circular table. The resulting compared difference controls the clockwise or counterclockwise rotation of the table and table rotation in the neighborhood of the figure zero of the position detector is smoothed.

Abstract: 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 train elements derived from information characters input in binary form, where the relevant position of the type carrier can be read as a binary coded position character, in business machines, data machines, teleprinters or the like.

Abstract: 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 the full 360.degree. displacement of the potentiometer arm. Circuitry is provided to insure that the feedback element follows the shortest path to its command position.