SU1170425A1 - Electromechanical multistable translation device - Google Patents

Abstract

ELECTROMECHANICAL MULTI-STABLE DEVICE OF LINEAR MOVEMENT, containing a DC motor, the shaft of which is mechanically connected to a movement type transducer, and a phase-sensitive detector with a low-pass filter, characterized in that, in order to increase functionality, by obtaining small discrete linear displacements, resulting in small discrete linear displacements, in which one can obtain small discrete linear displacements, in the case of linear displacements, in which one can not move. of steady states, it additionally contains a control voltage block, a frequency multiplier, the first and second pulse shapers c, direct current amplifier, selsyn, whose rotor winding through the first pulse shaper, phase-sensitive detector with a low-pass filter and direct current amplifier is connected to a direct current electric motor, and the stator windings are connected to an alternating voltage power and frequency multiplier input which, via the second pulse shaper, is connected to the second input of the phase-sensitive detector with S with a low-pass filter, the control voltage unit is connected to the control (L input amplify DC.

Description

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Phie. one

The invention relates to a discrete technique and can be used in industrial automation, measurement and computing technology, in tracking systems.

The aim of the invention is to enhance the functionality by obtaining small discrete linear mixes, with varying number of stable states.

FIG. 1 shows a block diagram of the device; in fig. 2 is a schematic diagram illustrating a variant of the technical implementation of the device; in fig. 3 - electrical diagrams illustrating the operation of the device.

The device includes an alternating voltage power bus 1, a selsyn 2, a first pulse shaper 3, a phase-sensitive detector 4 with a low pass filter, a control voltage block 5, a DC amplifier 6, a DC motor 7, a motion type converter 8, a multiplier frequency 9, the second pulse shaper 10.

The device works as follows.

The reference excitation signal P with a frequency of 50 Hz from the power bus 1 is fed to the stator windings of the selsynin 2 and to the input of the frequency multiplier 9. The frequency multiplier required to obtain various steady states is provided by the frequency multiplier 9. A voltage with a phase dependent position the shaft from the rotor winding of the selsyn 2, is connected to the input of the first driver 3 pulses, these pulses are fed to the first input of the phase-sensitive detector 4 with a low-pass filter, which must have a duration equal to the duration and nF pulses (-. The frequency multiplier factor of frequency multiplier 9 determines the number of stable states (i.e., linear displacement step) that can be changed. The phase-sensitive detector 4 with a low-pass filter provides a constant alternating voltage ± lo. Block 5 of the control voltage is connected to the control input of the dB amplifier, the voltage from which is supplied to the electric motor 4

J of direct current, the shaft of which is directly connected to the mechanical device 8 and the selsyn 2. The element is transferred from one steady state to another (control) by control voltage U-ynp, which is fed from the output of block 5

0 control voltage. When an element is in one of the stable states, it has a certain linear displacement and voltage with a phase shift corresponding to this displacement. When the control pulses of the Ulrna are applied, the control input of the amplifier 6 of the direct current, the shaft of the electric motor 7, turning in one direction or another (depending on the sign of Uvuf) will rise to the next steady state (Fig. 3).

Thus, the device converts the number of pulses into discrete linear displacements. FIG. 3 shows the voltage plots in the characteristic nodes of the circuit of FIG. 2, characterizing the principle of action

5 devices. The steady states of the device are indicated by the numbers 1-8 on the characteristic of FIG. 3d. In the circuit diagram, a frequency doubler circuit is used as a frequency multiplier 9 (other known frequency multipliers can also be used). Practically, to obtain eight stable states, it is necessary that Hz, with Hz, therefore, the frequency multiplier circuit 9 is selected as two serially connected frequency doublers (Fig. 2).

Thus, using the proposed electromechanical multistable linear motion device, it is possible to obtain small discrete linear displacements with varying number of stable states that do not require a special high frequency generator.

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Claims (1)

ELECTROMECHANICAL MULTI-STABLE LINEAR MOVEMENT DEVICE, comprising a direct current motor, the shaft of which is mechanically coupled to a motion converter, and a phase-sensitive detector with a low-pass filter, characterized in that, in order to increase the function FIG. 1 national capabilities by obtaining small discrete linear displacements with a varying number of stable states, it additionally contains a control voltage unit, a frequency multiplier, first and second pulse shapers, a DC amplifier, selsyn, whose rotor winding through the first pulse shaper, a phase-sensitive detector with a lower filter frequency and a DC amplifier connected to a DC motor, and the stator windings are connected to an AC power bus apryazheniya frequency multiplier and the input of which, via a second pulse generator coupled to a second input of the phase-sensitive detector _with a low pass filter block $ 8 upravlyayu- present voltage is connected to the control input of the DC amplifier. SU. „. 1170425