SU1580495A1 - Device for adjusting moment thyratron motor - Google Patents

Abstract

The invention relates to electrical machines with contactless switching. The purpose of the invention is to reduce tuning time and increase accuracy. The adjustable torque valve motor contains a converter 1 with a two-phase winding 2 core and a rotor-inductor 3, two amplifiers 4 and two current sensors. The device for setting the torque valve motor has an angle sensor 6, an angle setting device 7, a torque sensor 8, a torque setting device 9, an adder 10, an integrator 11, a synchronous detector 12, an integrator 13, an adder 14, a functional converter 15, multipliers 16 and 17, a generator 18 reference voltage, klch 19, control device 20, pulse counter 21, memory 22. By means of an adder, a synchronous detector receives a signal with a small constant component, which improves the quality of operation of the synchronous detector. The use of a functional converter with two outputs allows optimization by two arguments I a, I c in the presence of an equality type constraint using a single synchronous detector. The use of a control device and a pulse counter automates the process of changing the required torque and write address to the memory device, which speeds up the setup process. 1 il.

Description

3

The invention relates to electric machines, namely, direct current electric motors with contactless switching, i.e. to valve electric motors, and is intended for adjustment in the process of manufacture and operation of electric machines operating as executive torque motors and drives of follow-up systems and systems. Stabilization for various purposes.

The aim of the invention is to reduce the setting time and to improve the accuracy of the setting of the torque venous electric motor (MVD). 1 The drawing shows a functional diagram of the device for configuring the MIA.

The adjustable MVD contains an electromechanical converter 1 with a two-phase winding 2 core and a rotor-inductor 3, two amplifiers 4 and Two current sensors 5.

The MVD adjustment device contains an angle sensor 6, a angle adjuster 7, a torque sensor 8, a setting generator 9, a combiner 10, an integrator 11, a synchronous detector 12, an integrator 13, an adder 14, an Functional prelorer 15, multipliers 16 and 17 a generator 18 reference voltage, switch 19, control device 2 (3, Pulse counter 21, memory 22.

The rotor inductor 3 is mechanically connected with the shafts of the angle sensor 6, the angle settings 7 and the torque sensor 8, the output of which is connected to the input of the adder 10, the second inverting input of which is connected to the output of the torque setting 9, and the output is connected to the inputs of the integrator 11 and the synchronous detector 12 connected in series on the input-output with the integrator 13 by the adder 14 and the functional converter 15. The outputs of the latter are connected respectively to the inputs of the multipliers 16 and 17, the second inputs of which are connected to the output of the integrator 11, and the outputs to the inputs of the first second amplifiers 4, as well as to the information inputs of the storage device 22, the outputs of the amplifiers 4 are connected to the corresponding phases of the winding 2 core via the inputs of current sensors 5, the outputs of which are connected to the second inputs of amplifiers 4.

The output of the generator 18 reference voltage is connected to the electrode

0

s

five

YU

35

40 45

50

55

reference voltage of the synchronous detector 12 and the second input of the adder

14 via key 19. Its control electrode is connected to the first output of the control device 20, the second and third outputs of which are connected respectively to the synchronization input of the storage device 22, the input of the pulse counter 21 and the torque sensor 9. The output of the pulse pulse 21 is connected to the address input of the storage device 22, the information inputs of which are connected to the outputs of the angle sensor 6, the torque setting device 9 and the multipliers

16 and 17.

Functional converter

15 implements at its outputs the functions - sinp and cosp with the input signal p. The storage device 22 may contain analog-to-digital converters for converting analog signals at information inputs to digital form.

The device for adjusting the MVD operates as follows.

With the aid of the angle adjuster 7, the rotor-inductor 3 is turned to a certain angle OЈ. The moment setting device 9 outputs the initial value of the required torque M0. At the output of the pulse counter 21, the initial value of the address A for the memory 22 is set.

I

MIA tuning is done by

periods, each of which consists of three stages l. At the first stage, the control device 20 generates a pulse at the first output that opens the switch 19. To the output signal of the integrator 13 a variable reference voltage U0 is added and from the output of the adder 14 to the input of the functional converter 15 is fed signal f uq. From its outputs, the signals –sinВ, cosjb are fed to the inputs of the multipliers 16 and 17, the second inputs of which receive a signal from the output of the integrator 11. Signals 1d 1щsch i Im cosp are fed to the inputs of amplifiers 4 covered by deep negative feedback using sensors 5 current and supply phases of the winding 2 cores i

ift; .

Converter 1 develops an electromagnetic momentum M, containing a constant component, different from the required moment M0, and a variable

component, having the frequency of the reference voltage Uo and amplitude proportional to the EM / Er. The moment sensor 8 generates a signal proportional to the moment M, which is compared with the required moment I0 on the adder 10. From its output, the signal 6M M-Mo is fed to the inverted input of the integrator, producing the signal Ijn from the condition of equality of the required time I0 to the constant component M and not reacting to its variable component, and the input of the synchronous detector 12, generating a signal proportional to the partial derivative EM / 9p and entering the input of the integrator 13. At its output, a signal is obtained according to the equation

J t

9m

where T is the time constant of integrator 13,

which corresponds to maximization of the moment M on the angle p according to the principle of synchronous detection in extreme regulators.

As a result, the values of 1 pc are obtained that correspond to the required moment Me with the minimum value of I (Yi, or 1 c, by solving

.about

are

M (sA, ift, iB) M0; i1 + iЈ c min.

(one)

15804956

values of phase cores

i fft (Me,); il -fft (Me, oC.).

A signal is used for two purposes. Its constant (smooth) component s is intended to achieve equality by changing the value of IH by the integrator 11, and the variable component is to maximize the moment M with Im const. Thanks to the adder 10 on

synchronous detector 12 enters

a signal with a small constant component, which improves the quality of the synchronous detector 12. The use of a functional converter 15

with two outputs, it allows optimization by two arguments ift, IB in the presence of an equality type constraint using a single synchronous detector. The use of the control device 20 and the pulse counter 21 allows to automate the process of changing the required torque and the address of the write to the storage device, which speeds up the setting process.

The control device can be made in the form of a pulse generator, pulse counters and a decoder. Multipliers, adders, keys, synchronous detectors, integrators are commercially available in the form of integrated circuits.

In the second stage, the control device 20 generates at the second output a pulse C, which arrives at the synchronization input (write enable input) of the memory 22 and provides recording according to the address formula

40

A device for adjusting a torque valve motor including an electromechanical transducer with a rotor induction A of the values cl, M0, i, 1 & a, a post and a gear, each phase of two-phase angles from the angle sensor 6, the setting winding of which connected to

9 points and multipliers 16 and 17.

In the third stage, the control device 20 issues a pulse from the third output, which increases the content A of the pulse counter 21 by one and re-adjusts the setpoint moment M0 to a new value. After adjusting the MVD for all required values of But, using the angle adjuster 7, the rotor-inductor 3 is set to a new angular position and the setting is repeated. As a result, in the storage device 22, the optimum output of the corresponding controlled current source is recorded, the control inputs of the sources are connected to the output of the rotor angle sensor through a functional converter containing a generator of reference pulses, which is connected via a control key to the synchronous reference input the detector and the first input of the adder, the output of the synchronous detector is connected through the integrator with the second input of the adder, the output of which is connected to the input of the sine-cosine function 55

Claims (1)

Invention Formula 40 the output of the corresponding controlled current source, the control inputs of the sources are connected to the output of the rotor angle sensor through a functional converter containing a generator of reference pulses, the output of which is connected through a controlled key to the reference input of the synchronous detector and the first input of the adder, the output of synchronous the detector is connected via an integrator with a second input of the adder, the output of which is connected to the input of the sine-cosine function transducer, the sine output of which is connected through the first multiplier to the control input of the first current source and cosine through the second multiplier to the control input of the second current source, a pulse control device capable of alternately generating pulses on its first, second and second the third output, the first output of which is connected to the control input of the key, the second output — to the write enable input of the auxiliary device, the third output — via a counter — to its address input, s two information inputs are connected h "cut analog-to-digital converters the outputs of the respective multipliers, ac The third information input is connected to the output of the angle sensor, and a moment sensor, characterized in that, in order to increase accuracy and reduce setup time, it is equipped with a second integrator, a second adder, a torque generator, the first input of the second adder is connected to the output of the torque sensor, the second input - with the output of the torque sensor and with the fourth information input of the storage device, the control input of the torque master is connected to the third output of the control device, the output of the second adder is connected to Odom synchronous detector and via the second integrator with the second inputs of the two multipliers.