SU1417934A1 - Apparatus for controlling articulated locomotives - Google Patents

Abstract

The invention relates to automatic control devices for railway rolling stock and can be used to control locomotives in a multi-unit system. The purpose of the invention is to increase reliability. A device for controlling articulated locomotives on each locomotive contains sensors 25 and 20, respectively, of the excitation and recovery currents, which are connected to the inputs of analog-digital converters 24 and 19, the outputs of which are connected to the inputs of the regeneration current limiting unit 23 connected to the output of one from the inputs of the comparison unit 10, to the output of which one of the inputs of the correction unit 13 is connected, the other inputs of which are connected to the output of the comparison unit 5 and the controlled key; cha.14. The outputs of the command apparatuses 1 and 12, respectively, of the power supply and recovery modules are associated with the locomotive control unit 7 and the recovery current control unit 22. 1 il. i WITH

Description

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The invention relates to railway automation and can be used in the management of locomotives on the system of many units in the mode of regenerative braking.

The purpose of the invention is to increase reliability.

The drawing shows a block diagram of a device for controlling articulated locomotives.

A device for controlling articulated locomotives contains on each locomotive a command device of 1 ti, the outputs of which are connected to one of the inputs of the OR 2 and decoder 3, to the output of which one of the inputs of the signaling unit 4 and the comparison 5 and the other input of the OR 2, the output of which is connected to the first input of coding unit 6 and the input of the locomotive control unit 7, the outputs of which are connected to the second input of coding unit 6, which is connected to one of the inputs of the comparison unit 8, and one of the inputs of the controllable key 9, the other input of the latter and one of the inputs of the comparison unit 10 are connected to the output of the decoder 3, the output of the controllable key 9 is connected to one of the inputs of the logic element OR 11, the other inputs of which are connected to the output of the regener 12 controller and the output of the unit 13 of the correction connected by the inputs to the outputs of blocks 5 and 10 of the comparison and controlled key 14, the inputs of which are connected to the outputs of the block 5 of comparison and the logic element OR 15 connected by one input to the output of timer 16, and the other to the output of the block A comparison circuit 17, to which one of the inputs of the memory unit 18 is connected, while the other input of the latter and one of the inputs of the comparison unit 17 are connected to the outputs of the analog-digital converter 19 connected by the input to the output of the current recovery sensor 20 of the traction motors 21. The regeneration current control unit 22 is connected by an input to the output of an OR 11 logic element, and the output is connected to a traction motor 21, and the regeneration current limiting unit 23 is connected by inputs to the outputs of analog-to-digital converters 19 and 24, the last of which is connected log in th 25 with the current output of the sensor drive the traction motors

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21, the output of block 23 is connected to another input of block 10 of ripping. The output of the coding unit 6 of the driving locomotive 26 is connected to the other inputs of the decoder 3 and the comparing unit 8 of the slave locomotive 27, the output of the coding unit 6 is connected to the other inputs of the decoder 3 and the comparing unit 8 of the leading locomotive 27.

A device for controlling articulated locomotives operates as follows.

In regenerative braking mode, when the controllers 1 and 12 are turned on on the lead locomotive 26, the signals from their outputs go to one of the inputs of the decoder 3 and the logical element OR 11, respectively. The incoming signal turns off the output of the decoder 3 from the corresponding inputs of the logic element OR 2 controlled by key 9, from blocks 5 and 10 of the comparison and includes a block 4 alarm. In this case, on the lead locomotive 26, the operation of the slave locomotive 27 control unit 7 is signaled. The signal arriving at one of the inputs of the OR 11 logic element from the output of the recovery unit 12 includes the regeneration current control unit 22. Regeneration current control unit 22, depending on this signal, dials the corresponding braking position. The regeneration current sensor 20 measures the recovery current of the traction motors 21 and generates a signal at the output of the analog-digital converter 19. From the output of the analog-digital converter 19, the second input of the comparison unit 5 and the third input of the coding unit 6 receive information about the inclusion of the recovery current lead locomotive 26, represented in binary code. The other inputs of the coding unit 6 receive information for switching the control unit 7 of the slave locomotive 27. From the output of the coding unit 6, the signal goes to one of the inputs of the comparison unit 8 and the communication information on the communication line to the input of the decoder 3 of the slave motive power 27 and the current recovery rate of the traction machines of the lead locomotive 26,

On the slave locomotive 27, the command-- apparatuses 1 and 12 are turned off and the circuits from the output of the decoder 3 are turned on, except for the signaling unit 4, which is on the beacon

house locomotive 27 is turned off. Information from the output of the decoder 3 through the logical element OR 2 is fed to the input of the control unit 7. From one of the outputs of the control unit 7, information is received about the state of the slave locomotive control devices. From the other output of the control unit 7, a signal is received at the input of the control key 9. This signal allows the code signal from the output of the decoder 3 to pass through the control key 9 and the OR gate 11 to the input of the recovery current control unit 22. Thus, the brake positions corresponding to the brake positions of the lead locomotive 26 are gained on the driven locomotive 27. When entering the recovery mode of the driven locomotive, the signal from the output of the control unit 7 closes the control key 9 and thus prohibits the signal from the output of the decoder 3 from passing input unit 22 regulation of the current recovery. At the same time, on the lead locomotive 26, the recuperation current control unit 22 continues to recruit brake positions. After entering the recovery mode of the lead locomotive or, if the lead locomotive 26 enters the recovery mode earlier than the slave, then the input of the comparison unit 5 will receive information from the output of the decoder 3 about the recovery current of the lead locomotive, while the other input of the comparison block 5 arrives information on the recovery current of the slave locomotive 27 from the output of the analog-digital converter 19 of the slave locomotive 27. I

In block 5 comparison occurs

the comparison of the values of the recovery currents of the slave and driving locomotives and the output signal tulp appears at its output. This signal is also fed to the input of the correction unit 13, to the input of the timer 16 and to the input of the control key 14. If the error signal is & , it turns on timer 16. and allows the passage of the signal from the output of block 5

 through the control key 14 to the input of the block 13 correction. The memory unit 18 memorizes the magnitude of the current recovery IP at the previous time, and in unit 17 comparison occurs

 comparison of this current value

radios with the current value of the current recovery IP.

The recording in the memory block 18 occurs according to the error signal from the output of the comparison block 17. After recording in the multi-charge memory unit 18 a new value of the regeneration current, the error signal at the output of the comparison unit 17 becomes equal to zero.

At the first moment of time after entering the slave locomotive recovery mode (1p. 1p., Ipj. Since 1p 0, and to the input of correction unit 13 through a logical element OR 15 and controlled key 14 passes the signal from the output of comparison block 17. According to this signal and depending on the sign of In, the correction unit 13 increases or

0 decreases the brake position number by one. Information on the brake position number through the logical element OR 11 is fed to the input of the regeneration current control unit 22.

5 Depending on the brake position number, the resistance of the excitation circuit of the traction machine 21 changes. In so doing, the excitation current changes, and hence the recovery current.

0 The current sensor 20 measures the changed value of the recovery current, and the analog-to-digital converter 19 converts it into a binary code, which is fed to another input of the comparison unit 5, to the input of the memory unit 18 and to the input of the comparison unit 17. In comparison block 17, the preceding comparison is repeated (its recovery current value is changed from the changed one. If a mismatch signal ± ulp is present at the input of the comparison block 5, then the control key 14 passes the signal from the output of the logical element OR 15 to the input of the correctional block 13

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.

The process continues until

until the signal ± Л1р at the output of the comparison unit 5 becomes zero, i.e. the value of the slave locomotive recovery current will become equal to the recovery current value of the driving locomotive. By a signal, the control key 14 is closed and a further set of brake positions is terminated.

The presence of timer 16 is due to the fact that, at the first brake positions, a slight difference in the recovery currents between adjacent brake positions is possible. In that

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In the case of the comparison block input 5, if there is an error signal at the output of the comparison block 5, the signal from the timer 16 output comes after a specified time. Next, the control key 14 receives a signal on the input of the correction block 13, which increases or decreases the brake position number.

When the brake position number changes, the resistance of the excitation circuit of the traction machine 21 changes and, therefore, the excitation current changes. An excitation current sensor 25 measures the excitation current value and transmits it to an analog-to-digital (input) converter 24. From the output of the latter, the excitation current value in a binary code is fed to one of the inputs of the regeneration current limiting unit 23. At the other input of the unit 23, information is received from the output of the analog-to-digital converter 19 on the magnitude of the recovery current. Block 23 calculates the ratio of the recovery and excitation currents. Depending on the connection of the traction motors (sequential, series-parallel or parallel), this ratio should not exceed a certain value. A signal corresponding to the ratio of the recovery and excitation currents passes to one of the inputs of the comparison unit 10, and to the other input from the output of the decoder 3 a signal corresponds to a value that this ratio should not exceed for this connection of the traction motors. In the event that the ratio of the recovery and excitation currents exceeds the permissible value, then a signal from the output of the comparison unit 10 to the input of the correction unit 13 receives a signal that prohibits a further increase in the brake position number. To monitor the health of the device, there is a comparison unit 8, which compares the output signals of the coding units 6 on the driven and driving locomotives. If the output signals of the coding blocks are the same, this means that the sets of equipment on the slave and master locomotives are working properly. If the comparison block 8 detects a discrepancy between the 3 output signals of the coding block of the driving and slave locomotives, then the output of the comparison block 8 receives a signal the input of the block And alarm about having 7934 -6

with malfunction. Since there is no locomotive brigade on the driven locomotive, block 4

driven locomotive off. five

A device for controlling articulated locomotives is constructed in such a way that the locomotive can be Q either leading or following. Switching the operating mode of the locomotive from master to slave can be done by toggle switches in the command devices 1 and 12,

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Claims (1)

Invention Formula 0 0 A device for controlling articulated locomotives, which contains on each locomotive a command gear, the outputs of which are connected to one of the inputs of the first OR logical unit and the decoder, to the output of which one of the inputs is connected 5 block alarm first unit comparison and another input of the first OR logic element, the output of which is connected to the first input of the coding unit and the input of the locomotive control unit, connected by one of the outputs to the second input of the coding unit, the output of which is connected to one of the inputs of the second comparison unit, connected to the output of another . the input of the alarm unit, one of 5 analog converters, with the output of which is connected the third input of the coding unit and another input of the first comparison unit, and with the input - the output of the current recovery sensor, the control unit of the current recovery, the connected output with the traction machines, and the input - with the output of the second logic element OR, one of the inputs of which are connected to the outputs of the 5 of the recovery unit and the correction unit, the first input of which is connected to the output of the first comparison unit, to which the timer input is connected, and the other inputs of the second comparison unit are connected to the output of the coded driving unit. and a slave locomotive decoder, to the output of the coding block of which other inputs of the second comparison block and the decoder of the lead locomotive are connected, characterized in that, in order to increase reliability, it is equipped with a key-controlled memory block,  14 Neither the regeneration current, the excitation current sensor and additional comparison units, the OR logic element and the analog-digital converter, the input of which is connected to the output of the excitation current sensor, and the output - to one of the inputs of the regeneration current limiting unit, the other input connected to the output of one of analog-to-digital converters, and the output with one of the inputs of the third comparison unit connected by another input to the output of the decoder, and the output to the second input of the correction unit, the third input of which is connected to the output house one of actuated keys whose inputs podklyuche79348 to the outputs of the first comparison unit and the third logical element OR, connected by one input to the output of the timer, and the other to the output of the fourth comparison unit, to which one input of the memory unit is connected, to the output of which one input of the fourth comparison unit is connected, the other input and the other input of the memory unit is connected to the output of one of the analog-to-digital converters, with one and the other inputs and the output of the other controlled key connected respectively to the other output of the locomotive control unit, the output of the decrypt Ora and another input of the second logical element OR, five 0 15