SU741312A1 - Shadow projector of vehicle trainer - Google Patents

Description

one

The invention relates to training devices, in particular to vehicle simulators.

A shadow projector of a vehicle simulator is known, comprising a locally mounted on movable mutually perpendicular guides of the terrain model, a fixed light source, a shadow projector engine and actuators associated with the sensors of the position of the controls of the simulator 1.

Famous projector distorts the visual picture of the rotation of the vehicle.

The aim of the invention is to improve the imitation of the rotation of the vehicle.

The goal is achieved by the fact that the actuator of the rotation is made in the form of an individual self-braking of the electric drive with a control circuit and a tachogenerator mounted on the shaft of the shadow projector engine, while the control circuitry is connected to the position sensor of the simulator steering gear and the tachogenerator.

  , FIG. .1 shows the kinematic scheme of the projector; in fig. 2 - drive control circuit.

The shadow projector contains a motor 1 with which a tachogenerator 2 is connected kinematically, an executive motor 3 of an individual electric drive and a worm gear, self-braking gear 4, on the output shaft of which a bevel gear 5 is mounted, connecting the swivel base 6 with a mock-up through intermediate 10 frame terrain 7, two friction variators 8, placed perpendicularly to one another to communicate the terrain to a model of mutually perpendicular movements through the driven friction rollers, the position of which With respect to the drive plates, the cranks are set by the cranks of the crank mechanism. The drive disks of the variators 8 receive rotation from the engine 1 through a system of gears. To illuminate the layout of the area is a point source of light 9, located

20 is stationary along the axis of rotation of the rotary base.

The projector has an electromagnetic brake 10 and a flywheel 11 simulating the vehicle's moving mass, which is also a brake disc at the same time. The control circuit of the executive body 12 rotates the terrain, located in the simulator cabin, connected to the position sensor of the simulator steering gear and tachogenerator 2.

The electrical circuit for controlling the rotation of the layout of the terrain (Fig. 2) contains two opposite-connected thyristors 13 and 14, which are shunted by diodes. 15. Both thyristors are controlled by a pulse driver assembled on transistors 16 and 17. The pulse driver is powered by a full-wave voltage trapezoidal shape, the amplitude given and the shape of which is provided by the zener diode.

Resistors 19, 20, diodes 21-24, and potentiometer 25, which is the sensor position of the simulator steering wheel, form a balanced bridge. In the middle position of the potentiometer 25, the bridge is balanced and the pulse shaper is locked. The pulse shaper is connected to potentiometer 25 through diode 26.

The resistor 27 sets the threshold for unlocking the pulse driver. The tachometer 2 is connected to the engine of the potentiometer 28 through a smoothing filter 29, 30 and resistance 31.

Elements 32-36 are used to set the operating modes of semiconductor devices.

In an individual self-braking electric drive, a 3-D motor with independent excitation is used.

Shadow projector works as follows.

The shadow projector is controlled by a training driver who sits in the simulator cab, which is a copy, of the vehicle cab with all the controls. In front of the cabin there is a screen on which a moving image of the terrain model is projected. The training, giving a signal to the engine 1, drives the friction variators 8 through a gear system, which drive the layout 7 of the terrain through the belt and cable transmissions. Friction variators 8 tell the layout 7 of the terrain to move in mutually perpendicular planes. The rotational movement of the terrain to the model is reported by the executive engine 3, whose rotational speed is determined by the tachogenerator 2 depending on the revolutions of the main engine 1 and on the position of the steering wheel of the simulator. The rotation is transmitted to the worm self-braking gearbox 4, to the bevel gear 5 and the swivel base 6, on which the terrain model 7 is movably located. The result is the addition of three displacements: two reciprocating in mutually perpendicular planes and one rotational. A self-braking screw reducer 4 serves to dampen the inertia of the rotating masses after the turn has been completed.

When the steering wheel rotates, the position of the potentiometer 25 changes, the bridge balance is broken, and through the diode 26, the emitter of the transistor 16 of the voltage pulse generator receives positive or negative half-periods of the supply voltage and charges the capacitor 33. Depending on which direction the steering wheel rotates and therefore, potentiometer 25, depends on the polarity of the half-periods of the voltage supplied to the emitter of the transistor 16. During one of the half-periods, the voltage on the emitter 17 will exceed the opening voltage of a pulse rotator and at its output at the emitter of the transistor 18 in a Vits control pulse. This impulse unlocks one of the thyristors 13 or 14. If the potentiometer slider is shifted upward in the circuit, then the thyristor 13 is unlocked, since at this moment its anode is positive. If the slider is shifted down, then the thyristor 14 is unlocked. Current pulses of either positive or negative half-periods of the supply voltage flow through the measles of the engine, depending on which way the slider of the potentiometer is moved 28.

The potentiometer slider 28 through the smoothing filter 29, 30 receives a signal from the tachogenerator 2. The average current flowing through the motor measles is equal to the product of signals from the tachogenerator 2 and from the balanced bridge to the emitter of the transistor 17. As a result, the speed and direction of rotation of the translucent terrain model around the vertical axis depends on the linear speed of movement of the layout along mutually perpendicular guides and on the magnitude and direction of rotation of the simulator's steering wheel.

Claims (1)

Invention Formula Shadow projector of a vehicle simulator comprising a locally mounted, movable, mutually perpendicular guides of the locality, a stationary light source, a shadow projector engine and actuators associated with the position sensors of the simulator controls, in order to improve the imitation of the turn the vehicle, the turn actuator is made of a type of individual self-braking of the electric drive with control circuit and tachogenerator, installed on the motor shaft shadow projector, wherein the control circuit is connected to the sensor the position of the steering mechanism of the simulator and tachogenerator. Sources of information taken into account during the examination 1. V. Guslitz et al. Automotive simulators. M., 1975, p. 27.