SU1354383A1 - Stepping electric drive - Google Patents

Abstract

The invention relates to electrical engineering, to the control of electrical machines. The goal is to extend the functionality by discretely adjusting the step length. The device contains an electric motor, a hysteresis rotor 11, a stator, on which the main 7 and 9 and additional windings 27 and 29 are placed, misaligned with each other. The fixing of the rotor 11 is provided with a constant current, which the control circuit supplies to the winding 7 from the source 1. To perform a step, a code combination is recorded in the register 12. After that, the control circuit supplies from source 2 a pulse to the winding 7, the magnetizing rotor 11 along its axis, and then simultaneously with the supply of pulses to the windings 9, 27, 29, the magnetizing rotor 11 along their axes, is fed through the delay element 6 pause to the winding 7 Since the direction of the total magnetization vector of the rotor 11 does not coincide with the direction of the axis of the winding 7, a torque occurs that moves the rotor one step, the value of which is determined by the ratio of the directions of the axes of the windings and the register code 12. 6 Cp. f-ly, 7 ill. 23 (L 2 21 22 i9 co el a 00 oo with 2Q 6 fe./

Description

by cars

The invention relates to electrical engineering, electrical control.

, and can be used to create simple stepper drives with hysteresis motors,

The purpose of the invention is the extension. functionality by discretely adjusting the step length. In FIG. 1 shows a diagram of the drive; FIG. 2 — engine, longitudinal section; FIG. 3 shows the arrangement of the projections of the axes of the windings onto the plane perpendicular to the axis of the motor of FIG. 4 - cyclogram of work

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drive; in fig. 5 - 7 - schemes

electric drive, embodiments

The electric drive (FIG. 1) contains a source of 1 constant E1printer 1 OR a source of 2 pulses, a prohibition element 3 with output pins 4 and 5, a delay element 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 misaligned windings 7 and 9 are located on the stator. The rotor 11 may be smooth.

The output of a source of constant voltage or current 1 is connected to the first input of prohibition element 3, and its output is connected to winding 7,

The register 12 includes the first key 13, which has output pins 14 and 15, the second keys 16 ™ 18, which have output pins 19-24, the one-vibrator-shaper 25 pulses e and the constriction element 26. pulses.

The stator of the electric motor is located: the first additional winding 27, having an axis 28, and the second additional winding 2.9, having an axis 30, are located. The windings 7, .9, 27 and 29 are not connected. If the axis 8 of the winding 7 has a projection on a plane perpendicular to the axis of rotation of the electric motor, in the form of axis 31, then axes 10, 28 and 30 have projections on the same plane (FIG. 3) in the form of axes 32-34, respectively. Fig. 3, angles A, - A between said projections of the axes of the windings are not equal to each other. Coda of windings 7, 9, 27 and 29 of the electric motor (Fig. 2) has a non-rotary magnetic system.

The second winding 9 and additional windings 27 and 29 (Fig. 2) are located

the length of the stator 35 in series, one after the other and with non-overlapping zones of magnetic fields of the windings 9, 27 and 29 with each other. The first winding 7 is located along the entire length of the stator 35 with overlapping zones of magnetic fields of the remaining windings 9, 27 and 29. Elements 6, 13, 25 and 26 together form a pulse distributor,

which can be performed by other schemes. It may also contain a pulse-spreading element 36 connected by an input to the inputs of the element 37.

5 pulse narrowing, and pulse shaper 38 (Fig. 5) or delay element 39 connected: by output to the pulse narrowing element 40, and by input to the input of the lower element 41, neither pulses (Fig. 6) or consist of a single element 40 taper pulses

In the drive circuit, the output of the pulse source 2 is connected to the input of the pulse driver 25, the output of the pulse source 2 is connected to the input of the first switch 13, the output of which is connected to the first motor winding 7, the output of the pulse driver 25 is connected to the input of the delay element 6 element 3 of the ban. The output of the delay element 6 is connected to the input of the pulse decimation element 26, the output of which is connected to the control inputs of the second keys 16-18, the discharge outputs of the register 12 are connected to the inputs of the corresponding keys 16-18, the output of the key 16 is connected to the second winding 9 of the electric motor, and the outputs of the keys 17 and 18 are connected with the corresponding additional windings 27 and 29,

For greater independence of the magnetic fields of the windings 9, 27, and 29 from each other (FIG. 2), the motor stator 35 can be made to be laminated with the main planes of the magnetic conducting plates perpendicular to the axis of rotation of the electric motor. Non-magnetic spacers can be placed between the magnetically conductive plates of the stator 35. In a number of cases, the alignment can be replaced by making the stator 35 out of 5 material with magnetic irregularity, where the magnetic conductivity of the stator 35 along the longitudinal axis (Fig 2) is minimal, and the magnetic conductivities in planes perpendicular

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the rotational axes of rotation of the motor are maximized.

The register 12 in each bit may have a unit signal in the form of a high level of the direction of the bend zero in the form of a low level of voltage. It is possible to execute the register for the ternary code, in this case each register bit may have a signal of three values (a positive unit is a positive voltage level, a zero is a zero voltage level, and a negative one is a negative voltage level) .

Key 13 is powered by a separate power source. If the key 13 is supplied with voltage or with current from source 1, the prohibition element 3 should include a voltage attenuator i. In the initial position, prohibition element 3 is open and the DC signal passes from source 1 through element 3 to the winding 7. This ensures rotor fixture 11. The magnetizing force from the current of the winding 7 is small, insufficient for half the magnetic systems of the windings 9, the magnetic reversal of the rotor 11. 27, 29 are independent of each other, and

To complete the step of a specific winding 7 when rotating the roto. The values for register 12 are fed and the recording of PZ 11 pulses in the windings of a p - code codeword. In simplicity 9, 27, and 29 are de-energized, then the forwarding code can be simple, binary. After writing the code combination (setting the step size) on the register 12, the source 2 receives at its output a voltage pulse U, (Fig. 4), for example, with a duration,. The voltage pulse U, is a command to perform a step. The voltage pulse and, from the source 2, falling on the input of the key 13, results in the output at the output of the specified key 13, the magnetization pulses of the indicated zones of the rotor 11 practically do not depend on the instability of the currents and parameters of the windings and keys. Zo

After magnetization of the rotor 11 zones in different (indicated) directions and when the current pulses in their respective windings are finished, the current IQ from the output of element 3 enters the winding 7 again. Since the direction of the total magnetization vector of the rotor 11 does not coincide with the direction the axis 8 of the winding 7, then a current into the electrovisible current that is supplied to the winding. Thus, a current pulse I acts in winding 7, therefore winding 7 charts the entire rotor 11 along axis 8.

From the trailing edge of the source 2 pulse, the pulse shaper 25 is triggered, which delivers a delay element 6 and a wide voltage pulse Uj of duration t, -t to the control input of the bar element 3. The element 3 at the same time does not pass a direct current signal, and in the winding 7 a current pause with a duration t is formed, - 55 the angle of rotation or the step size.

1.J ,. The voltage pulse, appearing after a certain delay time at the input of the pulse narrowing element 26, causes the formation of an Elemental Formula Crash at the output.

1..Step electric drive containing a hysteresis motor located on the stator misaligned about 543834

26 voltage pulse U, duration t - t. This voltage pulse U is fed to the control inputs of the keys 16-18, and they pass through the windings 9, 27 and 29 the currents of those signals that are on the bit outputs of the register 12 and correspond to its code combination.

10 So, for example, if binary code combination 101 is recorded on register 12, then, respectively, at the outputs of keys 16 and 18 (and in windings 9 and 29), the high-level pulses in the TC are 15 n, and at the output of the key 17 (and in the winding 27) there is no impulse.

The current pulses, acting in the corresponding windings (for example, windings 9 and 29), cause the magnetization reversal of the corresponding cylindrical zones of the rotor 11 along the axes of these windings. At the same time, the magnetization zones of the rotor 11 under the windings, where the signals-zeros from

25 of the register 12, are determined by the direction of the axis 8 of the winding 7. By the winding 7 when the rotor is rotating. ZO P 11 pulses in the windings from p - yes 9, 27 and 29 are de-energized, then directed

The laziness of magnetization of the said zones of the rotor 11 is practically independent of the instability of the currents and the parameters of the circuit windings and switches. Zo

After magnetization of the rotor 11 zones in different (indicated) directions and when the current pulses in their respective windings are finished, the IQ current from the output of the winding 7 again flows into the winding 7, when the roto-ZO P 11 is magnetized by pulses in the windings from p - yes 9, 27 and 29 are de-energized, then

element 3. Since the direction of the total magnetization vector of the rotor 11 does not coincide with the direction of the axis 8 of the winding 7, a torque is generated in the electric motor 45, which rotates the rotor 11 until the directions of the total magnetization of the rotor 11 and the axis 8 of the winding 7 coincide. Only stable ratios of the directions of the axes of the windings and the -register code is 50. The code combinations in register 12 can be changed or adjusted accordingly.

Claims (3)

1..Step electric drive containing a hysteresis motor with non-axial located on the stator coils of motion and magnetization reversal and a control unit including a source of pulses, a source of direct current and a prohibition element whose input is connected to a source of direct current and the output connected to a winding of motion, characterized in that in order to extend the functionality by discrete length adjustment steps, the motor stator is supplied with additional magnetization reversal windings 5, keys are entered into the control unit according to the number of reversal magnetization windings, the register and pulse distributor, and all windings are magnetizations have non-parallel axes and are located in zones arranged sequentially along the length of the stator with non-overlapping magnetic wires, the motor winding covers the active length of the stator, the terminals of the keys are connected to the windings The magnetized inputs of the keys are connected to the outputs of the register, the input of the pulse distributor is connected to the source of pulses, and its outputs with the prohibition element and the control inputs of the keys 2, an electric drive according to, and 1, that is, in that the pulse distributor includes a series-connected one-vibrator delay element and a pulse-narrowing element, the output of which is connected to the key inputs connected to the magnetization reversal windings, the single-vibrator output is connected to control input of the prohibition unit, and its input with the control input of the key, the output of which is connected to the output of the prohibition element. 6 3. The actuator according to claim 1, characterized in that the pulse distributor includes a first pulse narrowing element and serially connected delay element /, and a second pulse narrowing element Q g 0 five 0 . „L and The key inputs, the input of the delay element are connected to the source of pulses, the control inputs of the prohibition element and the first element of the pulses narrowing, the output of which is connected to the output of the prohibition element. 4, an electric drive according to claim 1, characterized in that the pulse distributor includes a pulse expansion element, a pulse narrowing element and a one-shot connected by inputs to the source of pulses, and outputs are respectively to a control input and output of the prohibition element and control inputs keys. 5, an electric drive according to claim 1, characterized in that the pulse distributor is made in the form of a pulse contraction element, the input of which is connected to the control input of the prohibition element and the source of pulses, and the output - to the control inputs of the keys. 6, Electric drive on PP. 1-5, t l and The reason is that the stator of an electric motor contains non-magnetic spacers dividing it into action zones of different magnetization reversal windings. 7, Electric drive according to PP, 1-5, due to the fact that the stator of the electric motor is filled with laminated perpendicular to its axis, (Jl 18 12 / 7 sixteen 2 h- I 35 I 43i Ihi 37 J 25 „ 2Af 12 19 X 20 Fig 5 18 i2 f7 23 2V yy f thirty a eight .ff  one f0 12 7 f 4 AND ff IIIF L Fi.7 Compiled by V.Alfimov Editor V.Petrash 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., d, 4/5 Production and printing company, Uzhgorod, Proektna str., 4