CS251711B1 - Pulse driven servo amplifier - Google Patents

Abstract

Servo amplifier controlled by pulses from the transmitter generator and a built-in monostable generator, connected via a feedback potentiometer to the motor shaft, arranged so that the monostable generator is connected to a power switch, to the output of which one motor pole is connected, the other motor pole is connected to the output of another power switch, the output of which is simultaneously connected to the input of the monostable generator by any coupling of the transmitter generator. The simplified type of servo amplifier allows for simplified wiring without the construction of special integrated circuits.

Description

The invention relates to a pulse-controlled servo amplifier.

So far, servo amplifiers have been used in which the pulses of a monostable generator and input pulses from a source are compared in special comparators with evaluation circuits, resulting in considerable complexity of the device.

These servoamplifiers use a monostable flip-flop circuit, logic elements, fault pulse extension circuits and power switches. This type of servo amplifier also usually requires the production of special integrated circuits.

We have now found a new type of pulse-controlled servo amplifier with a built-in monostable flip-flop, connected via a return potentiometer to the motor shaft, which is based on the fact that the monostable flip-flop is connected to a power switch to which it outputs. one pole of the motor is connected and the other pole of the motor is connected to the output of another power switch, the input of which is simultaneously with the input of the monostable flip-flop connected via any connection path to the transmitter generator. the maximum pulse length of the monostable flip-flop must be the maximum pulse length of the transmitter generator. The use of this new type of servo amplifier greatly simplifies wiring and eliminates the need for special integrated circuits.

Commercially available components can be used to build a new type of servo amplifier. The motor retains its torque thanks to pulsed power. In the event of a transmitter pulse transmission failure, the servo remains in the last position.

251 711

The type of servo amplifier according to the invention can be used to control models or other devices by any means. communication paths.

F

In the accompanying drawings, FIG. 1 shows a diagram of a beta amplifier according to the invention. The monostable flip-flop 1, which is connected via feedback via potentiometer 6 to motor 2, is provided with a season-connected power switch 2, the output of which is connected to one motor half. parallel to the single flip flop 1 and the power switch 2.

The signal from the 1: 1 rectangular pulse transducer generator, preferably tunable to twice the 100th fundamental frequency, is directed directly to the power switch 4 and also excites the monostable flip-flop 1 whose output switches the power switch 2. The outputs of both power switches are connected each for one half of the motor 2 · The comparison of the impulses is therefore directly on the motor 2 ·

FIG. 2 shows a detailed connection of the amplifier. Power switches 2 and 4 switch the voltage for motor 2 * Monostable flip-flop 1 has a time constant given by: T - 0.8 C (R + P), where C is a capacitor in a single flip-flop, R is the resistance determining the lowest pulse length and P is a feedback potentiometer that is connected to motor 3 with a 1: 75 ratio *

Claims (1)

Pulse-driven servo amplifier with built-in monostable flip-flop, connected via a feedback potentiometer to the motor shaft, characterized in that the monostable flip-flop (1) is connected to a power switch (2) to which one half of the motor (3) is connected and the second half of the motor (3) is connected to the output of another power switch (4), the input of which is simultaneously with the input of the monostable flip-flop (1) connected to the transmitter generator (5).