SU1354384A1 - Stepping electric drive - Google Patents

Abstract

The invention relates to electrical engineering, to the control of electrical machines, and can be used in simple step electric drives. The goal is to extend the functionality by discretely adjusting the step length. The device contains an electric motor with a hysteresis rotor 11, on whose stator windings 6 and 7 are located with axes 8 and 10, as well as additional windings 22 and 24 with axes 23 and 25. All windings 7, 9, 22, 24 are misaligned together . The control circuit supplies a constant current from source 1 to the winding 7, securing the rotor 11. To complete the step, register 12 records the code combination, prohibition element 4 performs the current pause in the winding 7, and the control circuit supplies the voltage to the windings 9, 22, 24, which magnetizes the rotor 11 each along its axis. After the magnetization of the rotor 1t is reversed, a current enters the winding 7, and due to the mismatch of the direction of magnetization of the rotor zones with the axis 8 of the winding 7, torques arise under the action of which the rotor 11 takes a step whose magnitude is determined by the ratio of the rotor zones. 2 hp f-ly, 4 ill. С /) L. ЕНЭ Од ел 4 СО ОС 8 9ц.гЛ

Description

The invention is responsive to the control of electric machines and can be used to create simple electric stepper motors with hysteresis motors.

The purpose of the invention is the extension of functionality by discrete adjustment of the step length. In FIG. 1 shows a diagram of the drive; in FIG. 2 — engine, longitudinal section; in fig. 3 - the arrangement of the projections of the axes of the windings on p, the velocity perpendicular to the axis of the engine; in fig. 4 - timeline of the drive.

The electric drive (Fig. 1) contains a source of constant voltage or current 1, a source of 2 pulses, a pulse expansion element 3, a prohibition element 4 with wires 5 and 6, as well as an electric motor with a first winding 7 having an axis 8, a second winding 9, having an axis 10 and a hysteresis rotor 11. The windings 7 and 9 are located on the stator.

The output of the pulse source 2 is connected to the input of the pulse expansion element 3, the output of the constant voltage source 1 or current is connected to the first input of the prohibition element 4, the output of the pulse expansion element 3 is connected to the control input of the prohibition element 4, and the output of the prohibition element 4 is connected to the first winding 7 electric motor. The drive also contains a register 12, keys 13-15, which have output views 16-21.

On the stator of the electric motor are also located the first additional winding 22 having an axis 23, and the second additional winding 24 having an axis 25. All the windings 7, 9, 22 and 24 are non-coaxial with each other. If axis 8 has a projection on a plane perpendicular to the axis of rotation, in the form of axis 26 (FIGS. 1 and 3), then axes 10, 23 and 25 have projections on the same plane in the form of axes 27 to 29, respectively. Angles A ,, A4 and AE between the indicated projections of the winding axes are not equal to one another (Fig. 3). Each of the motor windings 7, 9, 22 and 24 has a non-unipolar magnetic system. The second winding 9 and additional windings 22 and 24 are located along the length of the stator 30 sequentially one after the other and with non-overlapping magnetic fields of the windings 9, 22

0

15

20

25

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thirty

35

40

and 24 with each other. The first winding 7 (Fig. 2) is located on the stator 30 with its magnetic field overlapping zones of the fields of the remaining windings 9, 22 and 24.

The output of the source 2 of pulses is connected to the first inputs of the keys 13-15, the bit outputs of the register 12 are connected to the inputs of the corresponding keys 13-15, the output of the first key 13 is connected to the second winding 9, and the outputs of the rest of the switches 14 and 15 are connected to the corresponding additional windings 22 and 24.

For greater independence of the magnetic fields of the windings 9, 22 and 24 (Fig. 2) from each other, the stator 30 can be laminated to the main planes of the magnetically conducting plates perpendicular to the axis of rotation of the rotor (the charge is shown in Fig. 2). Non-magnetic (non-magnetic) gaskets can be placed between the stator plates 30. The alignment can also be replaced in a number of cases by making the stator 30 of a material with magnetic irregularity, where the magnetic conductivity of the stator 30 along the longitudinal axis (Fig. 2) is minimal, and in planes perpendicular to the axis of rotation, maximum.

In the initial position, the prohibition element 4 is open and the DC signal passes from the source 1 through the element 4 to the winding 7. This ensures the fixation of the rotor 11, since the magnetizing force of the winding 7 is made small and insufficient for complete reversal of the rotor 11.

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To complete a step of a predetermined value, a code combination is supplied and recorded to register 12. After recording the code combination on register 12, the source of 2 pulses causes a voltage pulse U, for example, with a duration, to be output. The pulse LOT of the source 2, arriving at the input of the pulse expansion element 3, causes a wide voltage pulse U with a duration t, -t, to form at the output of the element 3 6oJlee, which enters the control input of the prohibition element 4 and causes a pause in winding 7 current I, with a corresponding duration. At the same time, the voltage pulse and also falls on the control inputs of the keys 13-15, which drop out m0

313543844

pulses of currents corresponding to the code from the source 2 of the sequential combination recorded in the regenetitude of the pulse commands for completing the steps can be obtained many

Claims (3)

The current pulses, acting in accordance with a specific, given by the code corresponding to the windings 9, 22, and 24, register 12, cause reversal of the corresponding cylindrical zones or the scope of the invention of the rotor 11 according to the axes of the windings 9, 22 and 24. Since Yu 1. Stepper motor drive, containing each of windings 9, 22 and 24, the corresponding hysteresis motor with its own cylindrical zone located on the stator misaligned of the motor 11 (in Fig. 2 these zones are divided). in hanks of motion and remagion you are prerevolutionaries and lines in the rotor 11), and a control unit comprising the source of the magnetization of each of the indicated pulses is nick DC source GOVERNMENTAL zones is determined by the current direction, the pulse spreading element corresponding winding axis. For example, a prohibition element, the input of which is a measure, the rotor zone 11, which is under a single source of direct current, winding 9, is magnetized along axis 10, the output is connected to the winding of motion, winding 9, and, for example, - 20a, the control input is magnetized through the element of the winding 24 along the pulse width axis 25 connected to the winding source 24. Since the magnetic pulses, the distinctive windings 9, 22 and 24 are independent so that expanding from each other, and winding 7, with a re-functional capability, by magnetizing Accurate, then the direction of the discrete step length regulation, nor the 1–1 magnetization of the indicated zones, the rotor-stator of the motor is equipped with an additional 11 practically independent of the alternating magnetization windings, the stability of the currents and parameters of the control unit is entered into the register and windings .key on the number of windings peremahnichiva-, After the magnetization reversal of the rotozine zones, with all the windings of the magnetizer 11 and when the winding current pulses have non-parallel axes and are 9, 22, and 24 times ended, the circuits in the arranged series 7 again begin to arrive along the length of the stator, the zones with non-overlap I /. Due to the mismatch between the magnetic circuits, the winding of the magnetization directions of the rotor movement zones intersects the active length of 11 with the axis 8 of the winding 7, in accordance with the stator, the pins of the keys are connected to the driver {their rotating zones appear. windings, key inputs are connected moments. Under the action of their cumulative register, and their control torque, the rotor 11 rotates at the inputs to the source of pulses, a certain angle, i.e. commits d 2. The electric drive according to claim 1, the step is a step, and is subsequently fixed with the fact that the stator is dissipated by the winding current 7. The value of the angle is divided along the axis into zones of non-magnetic rotation or pitch of the rotor 11 defined by gaskets. is the ratio of the directions 3. Electric Motion according to claim 1, about the t-magnetization of the rotor zones and, consequently, that statorically depends on the code combination made by the perpendicular to the register 12. on the engine axis. t fl Ti.lL I T I I I I 2f -22 at.2 Vi 0 ITgj 25 L /.J Compiled by V. Alfimov Editor M. Vlanar Tehred I. Veres Proofreader M. Pojo Order 5711/53 Circulation 659 Subscription .VNIIPI USSR State Committee for inventions and discoveries. 113035, Moscow, Zh-35, Raushsk nab. 4/5 Production and printing company, Uzhgorod, Projecto st., 4 t / bww 3t f tji 2.4