SU1135002A1 - Device for controlling thyratron motor - Google Patents

Abstract

1. A DEVICE FOR CONTROLLING A FAN ELECTRIC MOTOR containing a frequency converter for connecting an output to the main winding of a valve electric motor, an inductor position sensor for a electric motor, a unit for generating signals of a given direction of rotation, a control command setter associated with the control input of a chassis outlet unit. given direction of rotation, the information input of which is connected to the output of the inductor position sensor, and the output to the control Inverter input, characterized in that, in order to increase reliability in case of a failure in a valve motor due to a frequency converter failure, it is equipped with an inductor reverse signal shaping unit with control and driver inputs, an analyzer of the valve motor operating mode with one driver and at least one control input controlled by a switch with two information and one control input, a valve electric motor emergency sensor, roar A rotary frequency sensor, the output connected to the control input of the operating mode analyzer of a valve motor, whose driver input is connected to the output of the control command setter connected to one information input of the controlled switch, the other information input of which is connected to the output of the signal generator 9 reverse the inductor, the control input of the switch is with the output of the analyzer operating mode of the valve motor, and the output of the switch is connected to the control unit th entry signal generating unit a predetermined direction of rotation, the sensor output alarm state eleyu oo trodvigatel valve connected to the control input signal generating unit on. SP reverse inductor, the input of which is connected with the output of the control command setter. 2. Device according to claim 1, characterized in that the signal generating unit for inductor reverse is equipped with four two-input logic circuits EXCLUSIVE OR, two inverters, time with a reference circuit and an R5 trigger, input Setting zero and input Setting of which are connected to the outputs of the first and second logic circuits DEPOSIT or, respectively, the first input of the first logic circuit SPARK

Description

Most often OR through the first inverter, and the first input of the second logic circuit EXTENDANT OR is directly connected to the output of the third logic circuit EXCLUSIVE OR, which forms the output of the signal conditioning unit n reverser the inductor, the second inputs of these logic circuits are combined and form the control input of the signal generation unit for the inductor reverse whose input is formed by the interconnected input of the second inverter and the first input of the third logic circuit EXCLUSIVE OR, the second input of which through time back A connecting chain is connected to the output of the fourth logic circuit EXCLUSIVE OR, the first and second inputs of which are connected respectively to the output of the second inverter and to the output of the RS trigger;

3. The device according to claim 1, which is based on the fact that the analyzer of the operating mode of a valve electric motor contains a single-trade and regenerative comparators, rectifier, logic circuit EXCLUSIVE OR with direct and inverter switches and logic circuit OR NOT with direct and inverting treatments the output of which is the output of the analyzer of the operating mode of the valve electromotor, the control and master inputs of which serve respectively the input of a single-threshold comparator, combined with the input of the center of the gate, and the direct input of the logical This is an EXCLUSIVE OR circuit whose inverting input is connected to the one-turn output (a new comparator, and the output to the forward input of the OR-NOT logic circuit, the inverting input of which is connected to the output of the rectifier via a regenerator comparator.

4. The device according to claim 1, which is based on the fact that the controlled switch contains three two-input AND-NOT logic circuits and an inyertor whose output is connected to the first input of the first AND-NOT logic circuit, and the input is combined with the second pepper input the AND-NOT logic circuit and is the control input of the controllable switch, the output of which is the output of the third AND-NOT logic circuit, the first and second inputs of which are connected respectively to the output of the second and first AND-NOT logic circuits, the second inputs of which are first and the second information inputs of the controlled switch.

5. The device according to claim 1, characterized in that the reversible rotational frequency sensor is made in the form of a rotational direction sensor connected to the output of a multi-channel inductor position sensor and a non-reversible rotational frequency sensor, the analyzer of the operating mode of the valve motor contains a two-input logic circuit EXPLUSIVE OR, a logic circuit OR-NOT with direct and inverting inputs and regenerative comparator, the input of which serves as the first control of the input of the analyzer of the operating mode of the valve electric motor The device is connected to the output of a non-reverse rotational frequency sensor, the driver input of which is the first input of the TROLLEY OR logic circuit, the second input of which is the second control input of the operating motor analyzer of the valve motor, and the forward and inverting inputs of the logic circuit OR are NOT connected respectively to the output of the logic circuit EXCLUSIVE or to the output of the regenerative comparator, and the output of the logic circuit OR is NOT the output of the analyzer BLDC motor mode.

This invention relates to electrical engineering and can be used by jB valve control systems.

electric motors, for example, in valve electric drives of aviation mechanisms.

A device is known for controlling a three-section transducer-frequency motor and a rotor position sensor with two sets of sensing elements. In this control unit, the frequency converter and the preliminary stages of amplification of the frequency converter are connected to their source of electrical energy through the corresponding power contacts, while the first and second sets of sensitive elements of the rotor position sensor are connected via normally closed and normally open contacts to the power source of the rotor position sensor fl,

The disadvantage of this device is the lack of funds that ensure engine start-up in emergency mode.

The closest technical solution to the invention is a device for controlling a valve electric motor comprising a frequency converter designed for. connecting the output to the root winding of the valve electric motor, the inductor position sensor of the electric motor, the signal generating unit of a given direction of rotation, the control command setting device, output connected to the control input of the signal generating unit of a given direction of rotation, the information input of which is connected to the output of the inductor position sensor and the output to the control input of the frequency converter 23.

The disadvantage of this device is the low probability of starting in case of any failure in the valve motor, equivalent to a failure of the type of break of the key of the frequency converter, which is not an absolute failure. With such a fault, the valve motor generally remains operable, which is especially important for a number of devices where the valve motor runs for a certain length of time without routine repairs, for example, in electric drives of aircraft mechanisms. Such valve motors require a very high reliability, since the failure of such objects can lead to a catastrophe. The use of a known device control: Leni valve motor is unacceptable in the specified class of objects. Due to low reliability. Since with any failure in a valve motor equivalent to a failure of the type of key breakage of the frequency converter, the valve motor does not develop the starting torque at certain positions of the synchronous machine inductor, and therefore does not start, although it can work with successful electromechanical characteristics due to the fact that one section or a combination of them is not connected to the power source.

The purpose of the invention is to increase the reliability of starting in case of a failure in a valve motor equivalent to a malfunction such as a broken key in the frequency converter.

The goal is achieved by the device for controlling a valve electric motor containing a frequency converter for connecting the output to the core winding of a valve electric motor, the position sensor of the electric motor, the unit for generating signals of a given direction of rotation, the control command setter, the output connected to the control the input of the signal generating unit of a given direction of rotation, the information input of which is connected to the output of the position sensor inductor, and the output to the control input of the frequency converter, is additionally equipped with a signal shaping unit on the inductor roar with control and master inputs, an analyzer of the operating mode of the electric motor with one master and at least one control input controlled by a switch with two information and one control inputs, an emergency state sensor of the valve electric motor and a reversible rotational speed sensor, output connected to the control input of the analyzer its valve motor mode, the input of which is connected to the output of the control command setter, is connected to one information input of a controllable switch, the other information input of which is connected to the output of the signal generator to inductor reverse, the control input of the switch with the output of the operating mode analyzer motor, and the output of the switch is connected to the control input of the signal generating unit of a given direction of rotation, the output of the emergency sensor, a valve or a motor connected to the control input signal generating unit on the reverse inductor defining input of which is coupled to the output of the set point control commands.  In addition, in the device, the reverse-induction signal-shaping unit is equipped with a four-double-sucked logic circuitry SPARKLING OR, two inverters, time h. Adding chain and RS-trigger, input Setting zero and input Setting the unit of which is connected to the outputs of the first and second logic circuits, EXCLUSIVE OR, respectively, the first input of the first logic circuit EXCLUSIVE OR via the first inverter, and the first input of the second logic circuit EXCLUSIVE OR directly The third logic circuit EXCLUSIVE OR is connected to the output of the third logic circuit, which forms the output of the signal-shaping unit to the inductor reverse, the second inputs of the specified logic circuits are combined and form the control input of the unit The signal to the reverse of the inductor, the back input of which is formed by the interconnected input of the second inverter and the first input of the third logic circuit EXCLUSIVE OR, the second input “through time, the driver circuit is connected to the output of the fourth logic circuit EXCLUSIVE OR, the first and second inputs of which are connected respectively to the output of the second inverter and the output of the R5 flip-flop.  At the same time, the operating mode of the valve electric motor contains a single-threshold and regenerative comparators, an expander, a logic circuit EXCLUSIVE OR with direct and inverting inputs and a logic, OR-NOT circuit with direct and inverting inputs, the output of which is the output of the analyzer operating mode of the valve motor which control and master inputs of which serve respectively the input of a single-threshold comparator, combined with the input of the miter, and the direct input of the logical circuit EXCLUSIVE or iruyuschy input of which is connected to the output odnoporogovogo computer. rator, and the output is to the forward input of the OR-NOT logic circuit, the inverting input of which is connected to the output of the rectifier via a regenerative one.  comparator  In the device, the controlled switch can contain three two-input AND-NES logic circuits and an inverter, the output of which is connected to the first input of the first N-logic logic circuit, and the input is combined with the first input of the second N-logic logic circuit and is a control input of the controlled the switch, the output of which is the output of the third AND-NOT logic circuit, the first and second inputs of which are connected respectively to the output of the second and first AND-NOT logic circuits, the second inputs of which are respectively the first second information and the inputs of the controlled switch. In addition, in the device a reversible rotational speed sensor is made in a vice directional rotation sensor connected to the output of a multi-channel inductor position sensor and a non-reversible rotational speed sensor, the analyzer of the operating mode of the valve motor contains a two-input logic circuit EXCLUSIVE OR, a logic circuit OR NOT with direct and inverting inputs and a regenerative comparator, the input of which serves as the first control input of the operating mode analyzer in The central electric motor is connected to the output of the irreversible rotational speed sensor, whose master input is the first input of the logic circuit EXCLUSIVE SH, second. the input of which is the second control input of the analyzer of the operating state of the valve motor and connected to the output of the rotational direction sensor, the direct and inverting inputs of the logic circuit OR NOT connected respectively to the output of the logic circuit EXCLUSIVE OR and to the output of the regenerator comparator, and the output of the logic circuit OR -NOT serves as the output of the analyzer operating mode of the valve motor, FIG.  I depicts a block diagram.  The valve motor control devices of FIG.  2 is a functional diagram of the device in FIG.  3 is a functional diagram of the analyzer operating mode of the valve motor; in fig.  4 is a functional diagram of the timing of the reference chain in FIG.  5 shows voltage diagrams in functional nodes of FIG.  2 and 4 in case of a successful launch; in fig.  6 - the same when working in an emergency condition; in fig.  7 shows the instantaneous values of the currents in the switchable f and j connected sections and the frequency of rotation of the valve motor when operating in an emergency state.  A device for controlling a valve electric motor made in the form of a synchronous machine 1 (FIG. 1) with a three-section crust winding 2 and an inductor 3, contains a position sensor 5 on the inductor shaft 4 with three output channels 6-8, a frequency converter 9, to outputs 3-12 of which a three-section root winding 2 is connected, control circuit 13-15 (control input) with the keys of the frequency converter 9 are connected to the output of the signal generating unit 16 of a predetermined rotational direction, having the control input 17 and the information input, which is connected to the channels 6-8 (output) of the inductor position sensor 5.  In the device, the sensor 18 of the emergency state of the valve motor J reversing speed sensor 19, the signal generating unit 20 for reversing the inductor with control 21 and driver 22 inputs, the analyzer 23 of the operating motor valve with driver 24 and controlling 25 inputs, setting unit 26 control commands, having at least one output 27, and a control switch 28 with information 29 and 30 and control 31 inputs and output 32.  The output 33 of the rotational speed sensor 19 is connected to the control input 25 of the operating mode analyzer 23, which determines the input 24 of which is connected to the output 27 of the control command setpoint sender 26 connected to one information input 29 of the controlled switch 28, another information input 30 of which is connected to the output 34 block 20 signal formation on the reverse.  The control input 31 of the switch 29 is connected to the output 35 of the operating mode analyzer 23, and the output 32 of the switch is connected. to the control input 17 of the signal generation unit 16 of a predetermined direction of rotation.  f The code 36 of the emergency state sensor 18 is connected to the control input 21 of the reverse signal generating unit 20, the input 22 of which is connected to the output of the command setting device 26.  The inductor position sensor 5 can be of any type, for example, inductive with magnetization.  In its channels 6-8, signals are generated about the position of the inductor 3 of the synchronous machine 1, in this case displaced relative to each other by 2 liters / 3 el. hail.  The duration of each signal corresponds to the angular rotation of the rotor on L e. hail.  Frequency converter 9 can be of any type, for example, half-wave or full-wave, performed on transistors.  The switching cycle for a full-wave frequency converter is 2J (/ / 3 el.  hail, for full-wave Ji / 3 el. hail.  The signal generating unit 16 of a predetermined rotational direction can be executed on the basis of various logic circuits, for example, on three logical circuits EXCLUSIVE OR.  When there is a single input signal on the abnormal input 17, the signals from channels 6 to 8 of the inductor position sensor 5 pass through the unit 16 for generating signals of a given direction of rotation on the control circuit 1315 of the keys of the frequency converter 9 without change.  At the same time, the inductor position sensor 5 is installed in a valve motor to ensure rotation to the right.  When the input signal at control input 17 is zero, signals from channels 6-8 of sensor 5 of the inductor position are inverted in block 16 of generating signals of a given direction of rotation.  This is equivalent to the shift of the sensor 5 position of the inductor on the El. hail, which provides a reverse valve motor.  9 .  1 The sensor 18 of the emergency state of the valve electric motor detects the inductor states in which the control signal from the sensor 5 position of the inductor arrives at the faulty key of the frequency converter 9 and can be made in various ways, for example, as a current sensor 37 (FIG.  2) 5 power supply 38 included in the circuit - purity converter 9.  The output 39 of the current sensor 37 is connected to a threshold device 40, the output 41 of which serves as the output 36 of the sensor 18 sensor of the emergency state of a valve motor. The threshold device 40 can be implemented, for example, on the basis of a comparator.  For example, a reverse tachogenerator mounted on the shaft 4 of a valve electric motor can be used as a reversible rotational speed sensor 1, with the amplitude of the output of the tachogenerator proportional to the rotational frequency, and the sign of the output signal determines the direction of rotation.  A reverse rotational frequency sensor 19 can also be implemented based on a non-reversible rotational speed sensor 42 (Fig.  2), for example, CHHXpqHHoro of a tachogenerator with a straightener at the output, and a rotational control sensor 43.  At the same time, the rotational speed sensor 19 has two outputs: the output 44 of the irreversible rotational speed sensor 42 and the output 45 of the rotational speed sensor 43.  The control command setting unit 26 sets the required operating mode of the valve electric motor and can be performed in various ways.  FIG.  2 shows a control command setting unit 26 consisting of a switch 46 and a resistor 47, one output of the switch 46 is connected to a positive power supply, and the second to a resistor 47 and is the output 27 of the setting control command 26, which provides the setting of the direction of rotation.  The signal generation unit 20, the inductor reversal in case of an emergency condition sensor 18, the engine in which the control signal arrives at the defective key of the frequency converter 9, generates, at output 34, a command to move the inductor in the opposite direction.  02 Block 20 of forming a signal for inductor reverse may, for example, contain four two-input logic circuits EXCLUSIVE WDI, two inverters, time specifying a chain 48 RS-flip-flop 49, inputs Setting zero 50 and Setting unit 51 which are connected to the outputs of the first 52 and second 53 logic circuits EXCLUSIVE OR, the first input of the first logic circuit EXCLUSIVE OR 52 through the first inverter 54, and the first input of the second logic circuit EXCLUSIVE OR 53 directly connected to the output 55 of the third logic circuit EXCLUSIVE OR 56- Which is the output 34 of the signal generating unit 20 to the inductor reverse, controlling 21 and setting 22 inputs of which serve respectively, the combined second inputs of the logic circuits EXCLUSIVE OR 52 and 53 and the input 57 of the second inverter 58 connected with p. The first input 59 of the third logic circuit is the KEYBOARD OR 56, the second input 60 of which through time specifies the chain 48 is connected to the output 61 of the fourth logic circuit EXCLUSIVE OR 62, the first 63 and the second 64 inputs of which are connected, respectively, to the output of the second inverter 58 and to. output 65 RS trigger 49.  The analyzer 23 of the operating mode of the valve motor, if there is a command specifying the direction of rotation from the setting device 26, and the inductor moving in a given direction with the speed at which it can pass by inertia the angular interval during which the control signal enters the defective key of the frequency converter 9, and if there is a current-free pause, it generates a signal, under the action of which the controlled switch 28 ensures the passage of a signal about a given direction of rotation to the output 32, without changing stepping on his first information entry 29.  If there is a command specifying the direction of rotation and the inductor does not move in a given direction, a signal is picked up at the required speed, under the action of which the signal arriving at the second information input 30 passes without a change to the output 32 of the controlled switch 26.  . Analyzer 23 working mode. The valve motor can be made in various versions.  According to FIG.  3, the analyzer 23 contains a single-threshold comparator 66 and a regenerative comparator 67, a rectifier 68, a logic circuit EXCLUSIVE W1I 69 with a direct 70 and inverting 71 inputs and a logic circuit 72 OR NOT with a direct 73 and inverting 74 inputs, 75 output of which is The output 35 of the analyzer 23 of the operating mode of the valve electric motor, which controls 25 and which assigns 24 inputs, respectively, are input 76 of a single-threshold comparator 66, combined with input 77 of the rectifier 68, and direct input 70 of the logical circuit EXCLUSIVE OR 69, which inverts d 71 of which is connected to the output 78 of the single-threshold comparator 66, and the output 79 to the direct input 73 of the logical circuit 72 OR NOT, the inverting input 74 of which is connected to the output of the VO rectifier 68 through the regenerator comparator 6 In this analyzer the single-threshold comparator 66 and the regenerator comparator 67 can be made on the basis of operational amplifiers, and the rectifier can be made on the basis of a diode array.  If the reversible rotational speed sensor T9 is made in the form of a rotational direction sensor 43 connected to the output of the multichannel inductor position sensor 5 and a non-reversible rotational speed sensor 42, the operating analyzer 23 contains a two-input logic circuit EXCLUSIVE OR 81 (FIG. 2) OR-NOT 82 logic circuitry with a direct 83 and 84 inverting inverters and a regenerator comparator 85, the input 86 of which serves as the first control input 87 of the analyzer 23 operating mode and is connected to the output 44 of the irreversive speed sensor 42, The analyzer's driver input 24 serves as the first input 88 of the logic circuit EXCLUSIVE OR 81, the second input 89 of which is the second control input 90 of the operating analyzer 23 and connected to the output 45 of the rotational direction sensor 43, forward 83 and inverting 84 inputs of the logic circuit OR NOT 82 connect , respectively, to the output of the logic circuit EXCLUSIVE OR 81 and to the output 91 of the regenerative comparator 85, which can be performed on the operational amplifier.  The control switch 28, in accordance with the information supplied to the control input 31, allows the output signal 32 to pass either from the first 29 or from the second 30 information inputs.  A control switch may, for example, contain three two-input AND-NES logic circuits and an inverter 92, whose output 93 is connected to the first input 94 of the first AND-95 logic circuit 95, and the input 96 is combined with the first input 97 of the second IS-98 logic circuit and is the control input 31 of the control switch 28, the output 32 of which is the output 99 of the third AND-NE logic 100, the first 101 and the second 102 inputs of which are connected, respectively, to the output of the second; 98 and the first 95 NAND logic circuits, the second inputs of which are, respectively, the first 29 and second 30 information inputs of the controlled switch 28.  The power supply 38 is connected to the converter 9 clock through contact 103.  The timing of the reference chain 48 of block 20 may include RC-chain 104 connected in series (FIG. 4), a regenerative comparator 105 and an inverter 106, the output 107 of which serves as the output 108 of the driver circuit 48, the input 109 of which is the input of the RC chain 104.  We also assume that at the time of the start-up, the voltage on the capacitor 110 of the RC-chain is zero, which can easily be accomplished by simple circuit engineering means, for example, by short-circuiting the capacitor before starting the engine.  When the device is connected to a source of electrical energy, in particular when the contact 103 is closed and the rotation direction is specified, for example, to the right, input 29 of the controlled switch 28, the driver 22 of the reverse signal conditioning unit 20 and the driver 24 of the operating mode analyzer 23 a single signal appears (fig. 5 and 6, time i).  A single task signal, arriving at input 22, inverting, passes to input 63 of logic circuit 62.  At time point -t, the capacitor 110 is discharged, and at the output 108 of the time of the driving chain 48, the signal O occurs, therefore, the single task signal received at the input 59 of the logic circuit 56 passes without a change to its output 55, which is the output of the generating unit signal to the reverse, and to the output 65 of the RZ-flip-flop 49 because the signal from the alarm state sensor 18 is absent.  A single signal from the output of the 65 R5 flip-flop 49 passes without change to the input 109, the time of the driving chain and causes the charge of the capacitor 110.  At the same time, the charge time of the capacitor 110 to the level of the input signal is determined by the time constant of the RC-chain 48, equal to T 1 / RC, where C is the capacitance of the capacitor, R is the resistance of the resistor.  The RC circuit parameters are selected so that during the discharge time of the capacitor 1U from the upper and lower C / n thresholds of the comparator 105, the motor current reaches the value needed to create a torque that exceeds the resistance moment on the shaft 4 of the valve electric motor.  During the charging time of the capacitor to the upper threshold of the operation of the comparator 105, determined by the voltage value of a single signal at the output 61 of the logic circuit 62, the reference signal from the input 22 passes without change to the output 34 of the signal forming unit 20 for the reverse, causing the identical signal on the first 29 and the second. 30 information inputs of a controllable switch 28 (time interval -tj of FIG. 6) In this case, in the case where the direction of rotation is set to the right, a single signal and takes place at the control input 17 of the signal generation unit 16 of the specified direction of rotation. signal with The channels 6-8 of the position sensor -5 passes on the control circuit 13-15 of the keys of the frequency converter 9 without changing, and the sensor 5 of the inductor position is installed in the valve motor to ensure rotation to the right.  If, at time point -t, the control signal arrives at an operative key or combination key of frequency converter 9, the valve motor starts rotating in a given direction at time tj (Fig.  5) when the motor current reaches a value sufficient to create a torque greater than the moment of resistance of the motor shaft 4, and a single signal appears at the output 36;  This single signal leads to the appearance of a zero signal at the output of the 65 R5 trigger, which, in turn, causes the transfer to the state O of the signal at the output 61 of the logic circuit 62. and recharging capacitor 110, the voltage (J at which, at time t, does not reach the upper threshold and the operation of the comparator 105.  The capacitor 110 is discharged, while maintaining a single signal at the output 34 of the signal conditioning unit on the reverse 20.  At time f, the voltage at the output 44 of the irreversible speed sensor 42 reaches the upper threshold of the comparator 85.  The upper threshold Ug of the operation of the comparator 85 is determined by the voltage corresponding to the rotational frequency at which the inductor can slip through the inertia of the angular interval of ° C during which the control signal enters the faulty key of the frequency converter 9.  Thus, at time tj, the inductor rotates at the required speed in a given direction, which leads to the appearance of a single signal at control input 31 of switch 28 and causes the reference signal to the first information input to pass to its output 32.  In case the engine is in good condition, starting from the moment k, the signals at the output of the blocks do not change their value until the appearance of a new control command.  If there is a fault in the motor, such as a broken frequency converter key (e.g. frequency, a dead pause occurs and O appears at the output 36 of the emergency state sensor 18 (time interval i-i.  in fig.  five).  The situation considered above by the time of the dead time (the moment of use is: moment, created.  sections (belt interval t.  - i), is sufficient for an inductor to scan through an inertial interval, about 5, as evidenced by a single signal output 35 of the analyzer 23 of the operating mode (time interval i - t).  At the same time, although the motor speed during the current-free pause, consequently, and the signal at the output 44 of the rotational speed sensor 42 decreases, a single signal at the output 35 of the analyzer 23 of the alarm condition is saved due to the fact that the time point -tg does not reach the lower threshold and, when the comparator 85 is triggered, the lower threshold of the comparator 85 is selected from the condition of maintaining a single signal 20 at the output 35 of the operating-mode analyzer 23 during the current-free pause

(time intervals, 2, which allow the control input 17 of the block 16 generating a signal 2 of a predetermined direction of rotation of the reference signal to the first information input 29 of the switch 28 to pass. At time tj, the control signal connects to the power source one of sections, and the engine accelerates in a predetermined direction until the reappearance of a current-free pause. Working in this mode, the engine has a degraded electromechanical characteristics due to the fact that one of the sections does not connect a power source for the angular interval d, which is evident from the graphs of instantaneous values SRI-4o currents i and disconnectable plug-sections 1C and rotation audio frequency U) of the valve motor (FIG. 7).

At the moment of time (Fig. 5) a command is issued to rotate the inductor to the left, O appears at output 27, inputs 29, 22, 57, 59, 24. The engine starts to brake, and at the time, the signal -ij from the 36 output of the JQ 18 sensor, the alarm condition becomes O, indicating that the current in the motor changes direction. At time. the output from the output 44 of the rotational speed sensor 42 reaches the threshold U triggered by the comparator 85, and at time t the engine starts to rotate left and

O appears at the output 45 of the rotational sensor 43. The signal from the output 35 of the analyzer 23 operating mode is equal to O and provides passage to the control input

17 of the signal generating unit 16 of a predetermined direction of rotation of the signal from the output 34 of the signal generating unit 20 to the reverse, which in the ddn case corresponds to the reference signal. At a time, the inductor reaches the desired rotational frequency, therefore, the angular interval. 6, during which the control signal is fed to the faulty key of the frequency converter 9, the inductor will slip

by inertia (time interval-fc-t). At the same time, starting from the moment of time 1, a single signal is generated at the output 35 of the analyzer 23 of the operating mode, which allows the set signal rotation direction to the control input 17 of the set signal directly from the output 27 of the command setter 26 directly. , the reverse is carried out in a similar way (time interval C - D2 but starting from time i. signals at the output of the blocks do not change the sign

If at the moment of switching on (moment of time t), the inductor takes a position at which the control signal arrives at the faulty key of the frequency converter 9 or by the time (time {,, Fig. 5) of the dead pause the torque created by the above section It is not sufficient to slip the angular interval c by inertia (the output signal O occurs at the output 35 of the analyzer 23 of the operating mode. The control device operates as follows.

As noted above, at time i (Fig. 6), a single signal at the output 61 of the logic circuit 62 causes a capacitor to charge, and a zero signal at the output 35 of the operating analyzer 23 provides the passage to the control input 17 of the signal generating unit 16 rotation of the signal to the second information input 30 of the switch 28. from the output 34 of the signal generation unit 20 to the reverse. Sensor output 36

There is no 18 fault condition due to roroj that the core winding section is not connected to the power source 5 if the inductor is in the angular interval o. Therefore, the cocden sator 110 is charged up to the top of the horn and the trigger of the comparator 105 (time interval 2 The comparator 105 is activated (time moment t) and causes the appearance of O at the output 34 of the reverse signal conditioning unit 20 and, as a result, at the control input 17 of the signal generating unit of the predetermined rotational direction. At a zero input signal at the control input 17, the signals from the channels 6-8 of the inductor position sensor 5 are inverted in the control unit 16 of the generation of the signal of the specified rotational direction. This is equivalent to a shift An inductor's position sensor 5 on J el. that provides connection to a power source of a section or combination of sections and creates prerequisites for successful start of a valve motor. At the time J the engine starts to the left and by the time-t; reaches the speed required for the current to flow, but since the direction of rotation does not correspond to the given one, this does not lead to the appearance of a single signal at the control input 31 of the switch 28, When an inductor hits the angular interval oL, Kova pause CMOment of time}. In this case, a zero signal appears at the output 61 of the logic circuit 62, which causes the discharge of the capacitor. When the voltage and the J-capacitor reach the lower threshold of operation Uj of the comparator 10, 1 appears at the output 34 of the shaping unit 20 (A reversing signal, therefore, at the input 17 of the signal shaping unit 16 for a given direction of rotation, which generates signals of the set direction of rotation: to the right. In this case, the control signal is fed to a working key, or a combination of keys, the engine of the JQ 02 effect is effectively braked in the anti-switching mode (time interval t t.) and begins to rotate in the specified direction (time . ), R By the time of the dead time (time interval i - 1) the speed reaches the required value (time tj), the inductor passes the angular interval d by inertia, and the motor continues to rotate in a given direction. Otherwise, the process repeats The condition for the operation of a valve motor with a failure such as a break in the key of the frequency converter in the event of a successful start is the presence of a kinetic energy reserve in order to pass the current-free angular interval oL by inertia whether the operating mode of the valve motor analyzer 23 configured according to the functional circuit (feat. 3) and there is a reversing rotational speed sensor 19, the control device operates in a similar manner. The start-up reliability in the device is increased due to the fact that in the event of an emergency state fixation, a command is given to move the inductor in the opposite direction along the key chains of the frequency converter, which allows you to remove the inductor of the valve motor from a dead center, because The signal from the sensing element of the inductor position sensor is fed to a working key or combination of keys of the frequency converter. Giving the command to move the inductor along any other circuit, for example, changing the polarity of the source of electrical energy in case of two-wire keys of the frequency converter, does not cause any movements of the inductor, since the control signal is received by the faulty key.

Sch4

rsl

FIG.

Fichl

Claims (5)

1. DEVICE FOR CONTROL OF A VENTAL ELECTRIC MOTOR, comprising a frequency converter for connecting an output to an anchor winding of a valve motor, a position sensor of an inductor of a valve motor, a signal generating unit of a predetermined rotation direction, a control command adjuster, an output connected to a control input of a signal generating unit of a predetermined direction rotation, the information input of which is connected to the output of the position sensor of the inductor, and the output to the control input frequency converter, characterized in that, in order to increase reliability in case of failure of the valve motor due to a malfunction of the frequency converter, it is equipped with a signal conditioning unit for reverse inductor with control and master inputs, an operating mode analyzer of the valve motor with one master and at least at least one control inputs controlled by a switch with two information and one control inputs, a sensor for the emergency state of the valve electric motor, reverse date a speed sensor connected to the control input of the operating mode analyzer of the valve electric motor, the input of which is connected to the output of the control command dial connected to one information input of the controlled switch, the other information input of which is connected to the output of the signal conditioning unit to the inductor reverse, the control input of the switch - with the output of the analyzer of the operating mode of the valve motor, and the output of the switch is connected to the control input of the forming unit signal of a given direction of rotation, the output of the sensor of emergency state of the valve motor is connected to the control input of the signal conditioning unit to reverse the inductor, the input of which is connected with the output of the master command control. 2. The device according to π. 1, characterized in that the block for generating a signal for reversing the inductor is equipped with four two-input EXCLUSIVE OR logic circuits, two inverters, a timing circuit and an R5 trigger, an input Zero setting and an input Unit setting which are connected to the outputs of the first and second logic circuits EXCLUSIVE OR , the first input of the first logic circuit ISKPYU1135002 NEXT OR through the first inverter, and the first input of the second logic circuit EXCLUSIVE OR directly connected to the output of the third logic circuit EXCLUSIVE OR, forming the output of the signal conditioning unit to reverse the inductor, the second inputs of these logic circuits are combined and form the control input of the • signal generating unit to reverse the inductor , the input of which is formed by connecting between itself the input of the second inverter and the first input of the third logic circuit EXCLUSIVE OR, the second input of which through time conductive chain coupled to the output of the fourth exclusive OR logic circuit, the first and second inputs which are respectively connected to the output of the second inverter and to the output of RS -triggera; 3. The device according to claim 1, characterized in that the analyzer of the operating mode of the valve motor contains a single-peg and regenerator comparators, a rectifier, an exclusive OR logic circuit with direct and inverting inputs and an OR-HE logic circuit with direct and inverting inputs, the output of which is the output the analyzer of the operating mode of the valve motor, the control and master inputs of which are, respectively, the input of a single threshold comparator, combined with the input of the rectifier, and a direct input of a logic circuit we are an EXCLUSIVE OR, whose inverting input is connected to the output of a single-path / comparator, and the output is to the direct input of the OR-HE logic circuit, whose inverting input is connected to the output of the rectifier through a regenerator; * a comparator. . 4. The device according to π. 1, due to the fact that the controlled switch contains three two-input logic circuits AND NOT and an inverter, the output of which is connected to the first input of the first logic circuit AND NOT, and the input is combined with the first input of the second logic circuit AND NOT is the control input of a controlled switch, the output of which is the output of the third AND-NOT logic circuit, the first and second inputs of which are connected respectively to the output of the second and first logical AND-NOT logic circuits, the second inputs of which are respectively the first and second information mi inputs of a controlled switch. 5. The device according to claim 1, characterized in that the reversible speed sensor is made in the form of a rotation direction sensor connected to the output of a multi-channel inductor position sensor and a non-reversible speed sensor, the valve motor operating mode analyzer contains a two-input logic circuit EXCLUSIVE OR, a logic circuit OR NOT with direct and inverting inputs and a regenerator comparator, the input of which serves as the first control input of the analyzer of the operating mode of the valve electric motor I am connected to the output of a non-reversible speed sensor, the input of which is the first input of the EXCLUSIVE OR logic circuit, the second input of which is the second control input of the valve operating mode analyzer of the valve motor and is connected to the output of the rotation direction sensor, direct and inverting inputs of the OR-HE logic circuit are connected respectively to the output of the EXCLUSIVE OR logic circuit and to the output of the regenerator comparator, and the output of the OR-HE logic circuit serves as the output of the operating mode analyzer ma valve motor.