SU1511772A1 - Device for controlling electromagnet - Google Patents

Abstract

The invention relates to electrical engineering and is intended to control electromagnetic devices used in automatic control systems. The purpose of the invention is to increase the control efficiency and reliability of the operation of the movable electromagnet system by fixing the response of the electromagnet only with a sufficient magnitude of the core stroke after the control signal is applied to the electromagnet winding. The device contains terminals for connecting an electromagnet, an electromagnet actuation control unit, a pulse generator, the first and second delay elements, eight keys, first to fourth elements OR, first and second pulse counters, a current sensor, first to fourth one-vibrators, a waiting multivibrator, the first and the second elements of the display, the first to the fourth elements BANGE, the device installation bus in the initial state, the first to the sixth triggers, the valve element, the differential amplifier, the comparator, the conclusions d L connect the power source and switch. By introducing the third and fourth BANKS, the fourth one-shot, the fifth and sixth triggers, the seventh and eighth keys, the valve element, the differential amplifier, the comparator and the peak detector, the electromagnet can be controlled in an automatic, cyclic mode with a fixed response of the electromagnet only with sufficient magnitude the course of the electromagnet core and full operation of the movable system of the electromagnet, which allows you to more effectively control the electromagnet and increases ostovernost full actuation movable electromagnet system after supplying a control signal to the electromagnet winding. 2 Il.

Description

one

(21) 4383770 / 24-07

(22) 02.29.88

(46) 09/30/89. Bul № 36 (72) G.I. Stetsenko (53) 621.318.3-5 (088.8)

(56) USSR Author's Certificate No. 1206843, cl. H 01 F 7/18, 1984.

USSR author's certificate W 1432620, cl. H 01 F 7/18, 1987.

(54) DEVICE FOR CONTROLLING AN ELECTROMAGNET

(57) The invention relates to electrical engineering and is intended to control electromagnetic devices used in automatic control systems. The purpose of the invention is to increase the efficiency of management.

and the reliability of the operation of the movable system of the electromagnet due to the recording of the operation of the electromagnet only with a sufficient magnitude of the course of the core after the supply of the control signal to the winding of the electromagnet. The device contains terminals for connecting an electromagnet, a control unit for the operation of an electromagnet, a pulse generator, the first and second delay elements, eight keys, the first through fourth elements of the SHS,

first and second pulse counters, current sensor, first to fourth one-shot, standby multivibrator, first and second display elements, first to fourth BAN elements, device reset bus, first to sixth triggers, valve element, differential amplifier, comparator, leads for connecting the power source and the switch. By introducing the third and fourth BANKS, the fourth one-oscillator, the fifth and sixth triggers, the seventh and eighth keys, the valve element, the differential amplifier, the comparator and the peak detector, the electromagnet can be controlled in an automatic, cyclical mode with the electromagnet triggering only at sufficient magnitude of the course of the electromagnet core and full operation of the moving system of the electromagnet, which allows for more efficient control of the electromagnet and creases accuracy full actuation movable electromagnet system after supplying a control signal to the electromagnet winding. 2 Il.

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The invention relates to electrical engineering and is intended to control electromagnetic devices (relays, contactors, electromagnets, etc.) used in automatic control systems.

The purpose of the invention is to increase the control efficiency and reliability of the complete actuation of the movable electromagnet system by recording the actuation of the electromagnet. only with a sufficient magnitude of the course of the core after the supply of the control signal to the winding of the electromagnet.

FIG. 1 shows a functional diagram of the device; in fig. 2

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diagrams that show how the device works.

The device contains the first pin 1 for connecting a power source connected to the first pin of the switch 2, the second pin of which is connected through the second 3 and third 4 keys connected in series to the input of the pulse generator 5. The output of the latter is connected to the input of the first counter of 6 pulses and to the second input of the element OR 7, the output of which is connected to the control input of the first 8 key. The first output of the latter is connected to the connection point of the second and third keys 3 and A, and the second output - to the first output 9 for connecting the electromagnet winding, the second output 10 for connecting which through the current sensor 11, shunted by the fourth key 12, is connected to the second output 13 for connecting the power supply. The output of the pulse counter 6 is via the first one 14 connected to the zero-setting input of the first and second triggers 15 and 16 through the first delay element 17 to the sound of the multivibrator 18, the output of which is connected to the first input of the first element OR 7 .

Control inputs 1 1 and 4 and 12 o are connected and connected to the direct output of the trigger 15, the first pin 9 to connect the electromagnet winding to connect the first pin of the sixth key 19. The second pin 10 to connect the winding of the electromagnet through the fifth the key 20 is connected to the input of the electromagnet operation control unit 21, the output of which is connected to the installation input to the zero state of the sixth trigger 22.

The second output of switch 20 is connected via the seventh switch 23 to the input of the peak detector 24, as well as to the first input of the differential amplifier, 25, the second input of which is connected to the | Output of the peak detector 24. The output of the differential amplifier 25 is connected to the first input 26 the comparator 27, the second input of which is connected to the reference pin Uon device. The output of the comparator 27 through the valve element 28 (for example, a diode) is connected to the input to the zero-state setting of the fifth trigger 29, whose direct output is connected to the inverting input of the third

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BENCH 30, the direct input of which is connected to the inverse output of the trigger 22, and the output through the fourth one-shot 31 - to the input of the zero-state setting of the fourth trigger 32.

The second one-shot 33 input is connected to the key 19, and the output is connected to the installation input to the zero state of the third trigger 34, the inverse output of which is connected to the direct input of the first BANE element 35, the inverting input of which is connected to the output 9, and the output to the input the third one-shot-36. The output of the last one is connected to the first input of the second ISh 37 element, the output of which is connected to the installation inputs to the trigger state 16 and 34 and to the forward input of the fourth BANGE 38 element. The second output of the trigger 32, and the output with the installation of the trigger state 22 in one state and the control input of the peak detector 24.

The second element BANGE 39 is connected with an inverting input to the inverse output of the trigger 32, the direct input to the output of the one-shot 36, and the output to the first input of the third element OR 40 and through the second delay element 41 to the first input of the fourth element OR 42, the output of which connected to the installation input to the single state of the trigger 15, and the second input to the second inputs of the SHSh 37 and 40 elements. The output of the OR 40 element is connected to the input of the installation to zero zero of the first counter 6, pulses. The inverse output T15igger 16 is connected to the control inputs of the keys 19, 20 and 26.

The second counter 43 pulses input is connected to the output of the one-shot 36, and the output -. with a control input of the key 3. The first display element 44, implemented, for example, on the LED, is connected to the direct output of the trigger 34. The second display element 45, made for example, on the LED, is connected to the direct output of the trigger 32. installation 46 the device in the initial state is connected to the inputs of the installation in a single state of the flip-flops 29 and 32, with the second input of the SHSh 37 element and with the input of the installation into the zero state of the second pulse counter 43.

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current in the winding of the electromagnet. The voltage from the output of the peak detector 24 is fed to the second input of the differential amplifier 25, the first input of which through the closed switch 20 receives the voltage from the output of the current sensor 11 .. The differential amplifier 25 detects the absence of voltage difference at the inputs, resulting in its output the voltage level is zero (Fig. 2 and). As a consequence, the output of the diode maintains a zero voltage level, which does not change the state of flip-flop 29 (Fig. 2 m), from the direct output of which 1 goes to the inverting input of the BAN 30 and prohibits its triggering.

At the same time, the control voltage (Fig. 2 g) from pin 9 is fed to the inverting input of the BANGE 35 element and prohibits its triggering, and on the leading edge of this voltage, the one-shot 33 triggers through the switch 19 and generates a trigger at the output is set to the zero state, and the signal 1 from the inverse output of the trigger 34 is fed to the direct input of the BAN 35 element.

At the end of the control signal (Fig. 2 g, point in time - point 64), the inhibit signal is removed from the inverting input of the BANNER element 35, which triggers it because there is 1 from the inverse output of the trigger 34 on its direct input.

On the leading edge of the voltage 1 from the output of the prohibition element 35, a single vibrator 36 is started, at the output of which a pulse is formed (Fig. 7. P point in time - point 64), which, having passed the OR element 37, sets the triggers 16 and 34 to one state as a result, keys 19, 20 and 26 are opened and, accordingly, signal 1 is removed from the direct input of prohibition element 35, and the prohibition element 39 and element OR 40 are passed, sets counter 6 to the zero state.

Passing the element OR 37 and the element BANCH 38, the indicated pulse arrives at the control input of the peak detector 24, as a result of which the key 48 is closed and the condenser 772 is discharged

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the capacitor 49. To eliminate the effect of the capacitor discharge voltage on the operation of the circuit, the input of the comparator 27 through the switch 26 is disconnected from the output 5 of the differential amplifier 25.

In addition, having passed the element BAN 39, the specified pulse arrives at the input of the delay element 41.

the delay time of which is chosen from the condition of the return of the moving system of the electromagnet to the initial state after the influence of the control signal, and the pulse itself is counted by a pulse counter 43. From the output of the delay element 41, a pulse (Fig. 2c) through the OR element 42 is fed to the installation input to the trigger one state 15. At this, the trigger 15 is set to the single state, resulting in closing the keys 4 and 12 and starting a new pulse formation cycle shake and control signal (Fig. 2, interval

time between points 65-66) is similar to the specified.

The total number of pulse supply cycles is determined by the counter 43, depends on its size and may be, in the general case, n, where n 1,2, 3 .... If the moving system of the electromagnet fails for the entire time of electromagnet control, no one time after the counter 43 is filled with signal 1 from its output to

the control input of the switch 3 is instructed to stop the supply of the shaking pulses and the control signal to the coil of the electromagnet. In this case, the key 3 opens and turns off

power supply from an electromagnet control circuit.

If the moving system of the electromagnet is triggered, then the current increase in the winding of the electromagnet

walks with a characteristic failure, due to the movement of the moving system of the electromagnet (Fig. 2 h, the point in time between points 65-66). Voltage drop on current sensor 11,

21 proportional to current, dd) is differentiated in time by a differentiating amplifier. Amplifier limiter. 60 highlights and amplifies the otrig impulse, of meaningful polarity (Fig. 2 K),

the falling edge of which the trigger 22 is set to the zero state on the direct output, thereby opening the key 23, and on the inverse output

eleven

15

a level 1 is set (fig. 2 l) which is fed to the direct input of the prohibition element 30,

According to the circuit, the capacitor 49 is charged to an amplitude value of a voltage corresponding to the operation current of the electromagnet. This voltage is supplied to the second input of Differentiating amplifier 25, the first input of which is supplied from the current sensor 11. At the output of differentiating amplifiers 25 a voltage equal to the difference of the voltages corresponding to the beginning of U and the end and the movements of the moving core is set. Electromagnet system (FIG. 2) when it is triggered. This voltage from the output of the differential amplifier 25 through the switch 26 is fed to the input of the comparator 27, Moreover, if the difference, j, which determines the course of the electromagnet core, does not exceed the voltage of the reference bus Uof, (FIG. 2) selected by the minimum allowable the magnitude of the core stroke at which the full operation of the moving system of the electromagnet is detected, the voltage at the output of the comparator 27 is negative, and the voltage at the output of the Diode 28 is zero, which does not replace the trigger state 29 (Fig. 2m) . From the direct output of the last 1 is fed to the inverting input of the element BANGE 30, which does not work, despite the presence of 1 at the direct input from the inverse output of the trigger 22,

The indication element 45 remains in the on state, indicating that the electromagnet has not fully activated. The remaining hour of the device's circuit works similarly to the specified one. In this case, the pulse from the output of the one-shot 36 (Fig. 2 p) is also recorded in the counter 43, in the cohtor in this case two pulses are recorded, and the back front of this pulse, through the elements SH 37 and 13 APRET 38, sets the trigger state 22 , in consequence of which the key 23 closes and the level O is established (Fig. 2 l) at the direct input of the element BAN 30.

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If the movable system of the electromagnet is triggered, the difference is on) gf of Uj-U (FIG. 2 h),

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0

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45

50

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Since the course of the electromagnet core exceeds the voltage of the reference bus Uon (FIG. 2), then a positive polarity pulse is generated at the output of the comparator 27, which through diode 28 enters the installation input to the zero state of the trigger 29. The latter triggers, as a result At its direct output, a signal O is set (FIG. 2 m), which is fed to the inverting input of the BAN 30 element and does not affect its operation.

As a result, the element BAN 30 works, because on its direct input there is a signal 1 from the inverse output of the trigger 22 (Fig. 22 L), which is set to the zero state on the falling edge of the pulse from the output of the limiting amplifier 60 (Fig. 2 to). On the leading edge of the voltage 1 from the output of the BANNER 30 element, the one-vibrator 31 is triggered and generates a pulse (Fig. 2n), under the action of which the trigger 32 is set to the zero state, as a result of which its inverse output sets the signal 1 (Fig. p), which is fed to the inverting inputs of the elements of the prohibition 38 and 39 and prohibits their operation.

As a result, the fflyc (fig, 2 p) generated at the output of the one-shot 36 after the termination of the control signal (fig, 2 g) is not passed through the BANNER elements 38 and 39. Passing through the W 37 element sets the pulse to Tpitrrepbi 16 and 34, the pulse itself is recorded in the counter 43, WHEN this is not set to the zero state, the pulse counter 6, and the trigger 15 remains in the zero state, as a result of which the shaking pulses and the control signal do not form, the keys 19 open, 20, 26 and the signal 1. is taken from the direct of the BREAK element 35, the trigger 22 is not set to one and the capacitor 49 of the peak detector 24 is not discharged, and the output terminal 58 can measure the voltage Uj, which is proportional to the operation current of the electromagnet. To measure the magnitude of the magnet current, it is advisable to calibrate the scale of the voltmeter in current units.

51

Peak detector 24 has a unit gain and is configured, for example, on diode 47, switch 48, capacitor 49, and operational amplifiers 50 and 51. The differential amplifier is implemented, for example, operational amplifier 25 and resistors 52-55. The comparator is made, for example, on an operational amplifier 27 and resistors 56 and 57.

The terminal 58 of the device is an output and is intended to control the actuation current of the electromagnet,. The electromagnet control unit 21 is made, for example, on a differentiating amplifier 59 and a limiter amplifier 60.

The device works as follows.

Before starting the operation of the circuit, to the conclusions 1 and 13 connect the power source J. A to the terminals 9 and 10 - the winding of the controlled electromagnet. A short pulse is fed to the device installation bus 46 (FIG. 2 a) to reset the device to its initial state, under which the counter 43 is set to the zero state, as a result of which the key 3 remains in the closed state. The flip-flop 29 is set to one state, as a result of which 1 (fig.2m) is set at the direct output, which is fed to the inverting input of the BAN 30 element and prohibits its triggering.

The trigger 32 is set to one state, as a result, the display element 45 is turned on, and O is set at the inverse output (Fig. 2n), which is fed to the inverting inputs of BANKS 38 and 39 and does not affect their triggering. Through the OR element 37, the triggers 16 and 34 are set to one state, as a result of which the inverse output of the trigger 16 is set to O (FIG. 2 d), under which the keys 19, 20 and 26 remain in the open state, and O from the trigger output 34 doing; the direct entry element BAN 35.

As a consequence, the level O is also maintained at the output of the BAN 35, and also the display element 44 is turned on. Pass advanced5

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through the BANCH element 38, the indicated pulse arrives at the control input of the peak detector 24, as a result of which the switch 48 is activated for the duration of the pulse (Fig. 2a), ensuring the discharge of the capacitor 49. This maintains the level O at the output of the peak detector 24 ,

,, and the trigger 22 is set to one state, due to which, under the action of 1 from its direct output, the key 23 is triggered and connects the input of the peak detector 24 to the second

. the output of the key 20, and O of the inverse output of the trigger 22 (Fig. 2 l) is fed to the forward input of the element BAN 30.

Through the element OR 40, the counter 6 is set to the zero state.

Q and through the element OR 42 is set to one state trigger 15. Signal 1 from its way out (Fig. 2 b) goes to control inputs of keys 4 and 12, which close and connect respectively control input of generator 5 through closed a key 3 to the switch 2 and a second terminal 10 for connecting the winding of the electromagnet to the second terminal 13 for connecting a power source, thereby eliminating the additional resistance of the current sensor 11 connected in series with the winding of the electromagnet.

The mode of operation of one-shot 14,

5 31, 33, 36 is chosen such that when the power is applied to the circuit, a zero voltage level is established at their outputs.

Modes of operation of the differential

0, the amplifier 25 and the comparator 27 are selected such that the output of the amplifier 25 is set to zero voltage, and the output of the comparator is negative, due to

5 of which, at the output of the diode 28, a zero voltage is maintained, which is fed to the input of the installation in the zero state of the trigger 29. The device is in such a state before the start of the electromagnet control.

To control the electromagnet, turn on switch 2. At the same time, the voltage from the output of the power source through pin 1, switch 2 and

5 closed keys 3 and 4 are fed to the control input of the generator 5 pulses, which begins to form rectangular pulses, the duration

0

Which is chosen from the condition of ensuring the beginning of the motion of the moving system of the electromagnet, and the pause from the condition of ensuring the return of the moving system to its initial state.

Pulses from the output of the generator 5 appear on the input of the counter 6, which counts them. Through element

LI 7 pulses arrive at the control input of the key 8. For the duration of the pulses., The switch 8 closes, and during the pause it opens, thus the voltage from the power supply output to the electromagnet winding is switched to the pulses from the generator 5 output. forming and feeding pulses shaking the movable system of the electromagnet (Fig. 2 b, the time interval between points 61-62). In this case, the number of shaking pulses in the general case can be m, where m is 1, 2, 3, ..., and depends on the width of the pulse counter 6 (in Fig. 2 in m 3).

By filling the counter 6 pulses, a signal 1 is generated at its output, under the action of which the one-shot 14 is triggered and forms a pulse at its output (FIG. 2 g, time point is point 62), which is fed to the inputs of the zero-setting of the triggers 15 and 16 , as well as the input element 17 of the delay. In this case, the trigger 15 is set to the zero state, as a result of which the HcL of its direct output is set to O (Fig. 2b, time point is point 62), under the action of which the keys 4 and 12 open. When the key 4 is opened, the generator control input 5 pulses and the formation of pulses at the output of the generator of 5 pulses ceases, as a result of which the key 8, which remains in the open state, ceases to operate, and the shaking pulses are generated and fed (Fig. 2, moment of time - point 62).

When the switch 12 is turned off, the winding of the electromagnet through the current sensor 11 is connected to the second output 13 of the power source, thereby providing the possibility of monitoring the operation of the movable system of the electromagnet. The trigger 16 is also set to zero.

on its inverse code, 1 is set (Fig. 2 d), under the action of which the keys 19, 20 and 26 are closed.

Passing the delay element 17, the time of which is selected from the condition of ensuring the return of the moving system of the electromagnet to its initial state after the shaking pulses are applied to the winding of the electromagnet, the pulse (Fig. 2e) is fed to the input of the waiting multivibrator 18, which is triggered and generates a pulse at its output which, through the element OR 7, enters the control input of the switch 8. The latter closes for the duration of the pulse from the output of the multivibrator 18 and connects the power supply to the winding of the electromagnet. Thereby, a control signal (Fig. 2 g) is generated on the electromagnet winding. Passing through the winding of the electromagnet, the control signal is fed to the current sensor 11. Current in

5 winding of an electromagnet increases according to a certain law.

If the moving system of the electromagnet does not work, then the current increase in the winding of the electromagnet

Q occurs without a characteristic dip (Fig. 2 3, the time interval between points 63-64), due to the movement of the moving system of the electromagnet.

Voltage drop on the sensor

 11, a current proportional to the current, is received through the switch 20 to the input of the unit 21 and differentiated in time by a differentiating amplifier 59.

The absence of a characteristic dip in the rising current curve in the electromagnet leads to the fact that: at the output of the amplifier is a limiter 60, and therefore at the output

5 of the electromagnet actuating control unit 21 (Fig. 2k, time point between points 63-64) there is no impulse fixing the electromagnet actuation. As a consequence, the 0 flip-flop 22 remains in a single co. on its inverse output, the level O (Fig. 2, l) is maintained, which is fed to the direct input of the element BAN 30.

5 In this case, the switch 23 remains in the closed state and the capacitor 49 of the peak detector 24 is charged to the amplitude voltage, respectively.

Based on the readings of the counter 43, it is determined on which control cycle the full operation of the moving system of the electromagnet is recorded. The extinction of the display element 45 notifies of the operation of the moving system of the electromagnet and the sufficiently large stroke of the core necessary for the normal functioning of the electromagnet.

The device allows visual monitoring of each electromagnet control cycle. In the event of a failure, the display element 44 is periodically turned on and off, and the display element 45 remains on all the time. With the full operation of the moving electromagnet system, the display element 44 is turned on, and the display element 45 is turned off. At the end of the operation of the control device, the switch 2 opens.

The technical effect of using the invention is expressed in increasing the control efficiency and reliability of the full response of the moving system of a contactless electromagnet. This is expressed in that the proposed device, in comparison with the prototype, provides not only an impact on the moving system of an electromagnet by swinging and generating a control signal with control of the fact of electromagnet operation, but also allows controlling the electromagnet in an automatic mode with fixing the operation of an electromagnet only with sufficient magnitude the course of the core and full operation of the moving system of the electromagnet. In addition, when the electromagnet is fully activated, the device allows to measure the actuating current at the required magnitude of the electromagnet core stroke.

The proposed device can be used as a device for controlling a contactless electromagnet located in inaccessible and inaccessible places and structures of automation devices with a remote control signal applied to the winding of a controlled electromagnet with a simultaneous increase in control efficiency due to the termination of the control signal only if recorded pol11772

my actuation of a moving electromagnet system. This circumstance makes it possible to increase the reliability of the complete operation of the moving system of the electromagnet. At the same time, the reliability of the automation devices, where the controlled electromagnet is used, is increased.

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formula of invention

A device for controlling an electromagnet containing terminals for connecting an electromagnet, a control unit for operating an electromagnet, a pulse generator, first and second delay elements, first through sixth keys, first through fourth

Q elements SHS, first and second pulse counters, current sensor, first to third one-shot, stand-by multivibrator, first and second display elements, first and second

 BANKS, device reset bus, first to fourth triggers, leads for connecting a power source and a switch, the first lead of which is connected to the first lead for connecting a power source, and the second lead is connected in series with the second and third terminals connected to the generator and fflylcov, the output of which is connected to the second

5 with the input of the first element 1ShI and with the input of the first pulse counter, the output of which is connected to the input of the first one-oscillator, the output of which is connected to the inputs of the installation of the first and the second in the zero state

Triggers and through the first delay element - with the input of the waiting multivibrator, the output of which is connected to the first input of the first OR element,

5 by the output of the first key connected to the control input, the first output of which is connected to the connection point of the second and third keys, and the second output is connected to the first output

0 for connecting an electromagnet winding, the second terminal for connecting which through a current sensor, shunted by a fourth key, is connected to a second terminal for connecting a power source, the control inputs of the third and fourth keys are combined and connected to the forward output of the first trigger, the first terminal for connecting the winding of the electromagnet

151

connected to the inverting input of the first element. a BAN and through the sixth key connected in series And the second one-shot to the input of setting the third trigger to the zero state, the direct output of which is connected to the first display element, the inverse output to the direct input of the first BANE, and the installation input to the single state is connected to the output of the second OR element and to the installation input to the single state of the second trigger, the inverse output of which is connected to the control inputs of the sixth key and the iroro key, the first The second output is connected to the second output to connect the winding of the electromagnet, and the second output to the input of the electromagnet control unit, the output of the first BANNER element is connected to the input of the third one-oscillator, the output of which is connected to the first input of the second SH, and the second input pulse counter and with the direct input of the second element BANGE, the inverting input of which is connected to the inverse output of the fourth trigger, and the output to the first input of the third OR element and through the second delay element to the first | input the fourth element of the ESh, the output of which is connected to the input of the first trigger, and the second input — to the second inputs of the second and third OR elements, with the installation input of the second pulse counter to the zero state, to the initial state and to the installation input: to the single state of the fourth trigger, the direct code of which is connected to the second display element, the output of the third element: OR is connected to the installation input to the zero state of the first pulse counter, the second output pulse counter: connected to the control

1177216

the input of the second key, characterized in that, in order to increase the control efficiency and reliability of the full response 5 of the moving system of the electromagnet, the third and fourth elements of the BAN, the fifth and sixth triggers, the seventh and the fourth, are entered into it

my and eighth keys, valve element, differential amplifier, comparator and peak detector, the input of which is connected to the second output of the fifth key through the seventh key and to the first input of the differential amplifier, the second input of which is connected to the output of the peak detector and output terminal of the device, and the output through the eighth key is connected to the first

the input of the comparator, the second input of which is connected to the device support bus, and the output through the valve element is connected to the installation input to the zero state of the fifth trigger,

the installation input in the single state is connected to the device installation bus in the initial state, and the direct OUTPUT is connected to the inverting input of the third BAN element, the output of which through the fourth single vibrator is connected to the installation input to the fourth state of the fourth trigger, and the direct input - with the inverse output of the sixth trigger, the direct output of which is connected to the control

the input of the seventh key, the installation input to the zero state — with the output of the electromagnet control unit, and the installation input into the single state is connected to the control input of the peak detector and the output of the fourth BAN element, the direct input of which is connected to the output of the second CM element, and the inverting 1st input is connected to the inverse output of the fourth trigger, the control input of the eighth key is connected to the inverse output of the second trigger.

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Claims (1)

Claim A device for controlling an electromagnet containing terminals for connecting an electromagnet, an electromagnet response control unit, a pulse generator, first and second delay elements, first to six keys, first to fourth 2Q OR elements, first and second pulse counters, a current sensor, from the first according to the third one-shot, waiting multivibrator, the first and second display elements, the first and second 25 elements are FORBID, the bus to set the device to its initial state, from the first to the fourth triggers, conclusions for connecting power supply and a switch, the first output of which is connected to the first output for connecting the power source, and the second output is connected in series to the second and third keys connected to the input of the pulse generator, the output of which is connected to the second 35 input of the first OR element and to the input of the first pulse counter, output which is connected to the input of the first one-shot, the output of which is connected to the inputs! zeroing the first state of the first and second triggers and through the first delay element with the input of the standby multivibrator, the output of which is connected to the first input of the first OR element, 45 with the output connected to the control input of the first key, the first output of which is connected to the connection point of the second and third keys and the second terminal is connected to the first terminal 50 for connecting the electromagnet winding, the second terminal for connecting which through a current sensor shunted by the fourth key is connected to the second terminal for connecting is55 source of power, the control inputs of the third and fourth keys are coupled and connected to a direct output of the first flip-flop, a first terminal for connecting the electromagnet winding 15 15 is connected to the inverting input of the first element BAN and through the sixth key connected in series AND the second one-shot oscillator - with the input to the zero state of the third trigger, the direct output of which is connected to the first indication element, the inverse output - with the direct input of the first element BAN, and the installation input in the single state is connected to the output of the second OR element and to the input 'of the installation in the single state of the second trigger, the inverse output of which is connected to the control inputs of the sixth key and fifth key, the first the first output of which is connected to the second output for connecting the electromagnet winding, and the second output is to the input of the electromagnet response control unit, the output of the first FORBID element is connected to the input of the third one-shot, I The output of which is connected to the first | input of the second OR element, to the input of the second counter pulses and with the Direct input of the second element is FORBID, the inverting input of which is connected to the inverse output of the fourth trigger, and the output to the first input of the third element OR and through the Second delay element to the first Input the fourth element of the IL, the output of which is connected to the setup input in the single state of the first trigger, and the second input is connected to the second inputs of the second and third elements OR, with the setup input in the zero state of the second Pulse counter, with the device reset bus and the setup input : in the single state of the fourth trigger, the direct output of which is connected to the second indication element, the output of the third IL element is connected to the input to the zero state of the first pulse counter, the output of the second counter ka pulses: connected to the control 11772 16 by the input of the second key, characterized in that, in order to increase the control efficiency and the reliability of the complete operation of the ³ mobile electromagnet systems, the third and fourth elements are PROHIBITED, the fourth one-shot (radio, the fifth and sixth triggers, the seventh and eighth keys, a gate element, a differential amplifier, a comparator and a peak detector, the input of which through the seventh key is connected to the second output of the fifth key and with ^ 5 the first input of the differential amplifier, the second input of which is connected to the output of the peak flow and the output terminal of the device, and the output through the eighth key is connected to the first 2θ input of the comparator, the second input of which is connected to the support bus of the device, and the output through the valve element is connected to the input of the fifth state of the fifth trigger, 25 the input of which is in the single state is connected with the bus to set the device to its initial state, and the direct output to the inverting input of the third element is FORBID, the output of which through the fourth one-shot is connected to the input of the installation to the zero state of the fourth iggera and direct input - with inverted output of the sixth flip-flop, a direct output of which is connected to the control 35 by the input of the seventh key, the input of the installation in zero state - with the output of the control unit of operation of the electromagnet, and the input of the unit in a single state is connected to the control ”input of the peak detector and with the output of the fourth element BAN, the direct input of which is connected to the output of the second OR element, and the inverting input is connected to the inverse45 output of the fourth trigger, the control input of the eighth key is connected to the inverse output of the second trigger. figure 1