 Programmable shunt voltage regulator circuit |
| What is claimed is: 1. A shunt regulator circuit having an output terminal, a sample voltage ... |
|
| Self-starting amplifier circuit |
| What is claimed is: 1. In a circuit comprising first and second terminals for application of an ... |
|
| Crossover and spectral preemphasis networks for adaptive inverse control |
| The present invention relates to a feedback control system providing an adjusted command signal to ... |
|
| Switching regulator |
| It is an object of the present invention to provide a switching regulator which overcomes the ... |
|
| Low power CMOS reference generator with low impedance driver |
| The present invention is a CMOS, low power, low output impedance, on-chip, voltage reference. The ... |
|
| Output stage current limit circuit |
| In the amplifier output stage of the present invention, current limiting is provided without ... |
|
| Integrated circuit with on-chip voltage converter |
| What is claimed is: 1. An integrated circuit comprising an external and an internal supply terminal ... |
|
| Focussing error detection device for use in optical disk type recording system |
| What is claimed is: 1. A focussing error detection device for use in an optical disk type recording ... |
|
| Color display system in ultrasonic sonar |
| The primary object of the present invention is therefore to provide a color display device for a ... |
|
|
Control system for tracking a moving target
| Details |
Inventors: Clement, Gilbert L.; Buttman, Rene F.;
Assignee: Etat Francais (FR)
Primary Examiner: Schaefer; Robert K.
Assistant Examiner: Feldhaus; John J.
Attorney, Agent or Firm: Larson, Taylor and Hinds
A digital electronic control system is provided for tracking a target and for directing an aiming system such as a gun. The control system comprises digital circuitry for determining the aiming angle required to aim the gun directly at the target and for determining an aiming angle correction which provides for leading the target by an amount such that a projectile fired by the gun will strike the target. The control system further includes a pair of motors controlled by the digital circuitry, one of which positions the gun to lead the target by a calculated aiming angle correction and the other of which positions, in a generic sense, the telescope an angular amount equal to the aiming angle correction behind the gun. In a preferred embodiment, an input is received by the control system from a tracking system which is positioned along with the gun and which can include, for example, a telescope which has an independently positionable optical axis. |
|
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The preferred embodiment of the invention is described hereinbelow in relation to a gun fire control system.
The gun fire control system could be one used in a tank equipped with a rotatable turret on which a gun is mounted.
Referring to FIG.
1, there is shown in a generic embodiment of a weapons system positionable by the present invention, a gun 10 mounted on a turret 11 which is rotatably mounted on a support platform 12.
A turret motor, schematically represented at 14, rotates turret 11 and hence, gun 10, in accordance with inputs signals from the fire control system.
A sighting system 16 having a telescope 18 with an optical axis indicated by dashed line 20, is pivotably supported on a mounting 22.
Mounting 22 is, in turn, rotatably mounted on support platform 12 and can be rotatably positioned independently of gun 10 by a motor schematically shown at 24.
Also shown in FIG.
1 is a part of the fire control geometry.
The present invention positions gun 10 such that a projectile fired therefrom will strike a target 26 moving relative to gun 10.
Target 26 is located a distance D from gun 10 in a direction indicated by line 28.
Line 28 is often referred to as the line of sight.
At a distance D, a projectile fired from gun 10 will take a time "t" to reach target 26.
If gun 10 were aimed in the same direction as the direction of the line of sight and a projectile were fired therefrom, after a time "t" had elapsed, the projectile would arrive at the location where target 26 was when the projectile was fired.
However, target 26, which is moving at a velocity V, would have moved a distance of Vt from that location and the projectile would miss the target.
One function of a fire control system is to calculate an angle, called the lead angle or the aiming angle correction, to which gun 10 is positioned so that a projectile fired therefrom will hit target 26.
In FIG.
1, the aiming angle correction has been denoted .
alpha.
.
The velocity vector V of target 26 can be resolved into its component vectors, wherein the velocity component in a direction perpendicular to the line of sight, indicated by line 28, is denoted V
|
| Related patents |
|
|
Device for indicating the rate of charge in an AC generator
Accordingly, it is a general object of the present invention to obviate the disadvantages of the prior art devices described above. It is another object of the present ...
|
|
|
Optical tracer back-up circuit
The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows: 1. In a pattern tracing system, a circular scanning ...
|
|
|
Actuating means for a flap in motor vehicles
I claim: 1. An actuating mechanism for a flap in motor vehicles, having an electric step motor for adjusting the flap between two end positions fixed by limit stops, the ...
|
|
|
Methods and apparatus for producing electrical batteries
OF PREFERRED EMBODIMENT The steps of the method depicted in FIG. 1 are as follows. Along a circle-shaped course 1 are found three work stations, namely a feeding or ...
|
|
|
Apparatus for converting light signals into digital electrical signals
Accordingly, it is an object of the present invention to provide an apparatus for converting light with wide dynamic range, especially, very weak light accurately into a ...
|
|
|
Probe for a radiometer
It is accordingly one object of this invention to provide apparatus for measuring the intensity of light in a zone immediately adjacent the surface of a solid. It is ...
|
|
|
Reference voltage sources
What is claimed is: 1. A bipolar reference voltage source comprising: a pair of ratio-matched transistors arranged to pass respective currents having different ...
|
|
|
Combination flashlight and circuit tester
Briefly, the above and other objects of the invention are attained in one aspect thereof by providing a combination flashlight and circuit tester which includes a ...
|
|
|
Apparatus for charging camera cells through flash bulb package receptacle
The foregoing and other objects and advantages which will be apparent in the following detailed description of the preferred embodiment are achieved by the invention ...
|
|
|
Electromagnetic power generator
OF THE PREFERRED EMBODIMENT In FIG. 1 of the drawings, a schematic illustration of a truck is given with only the major components of the inventive low tire pressure ...
|
|
|
Electrical and Wave 
