UA60077C2 - System for control and monitoring of gas-turbine engine parameters - Google Patents

Abstract

A system for control and monitoring of a gas-turbine engine parameters has additionally a block of digital-analog transformer and an analysis block.

Description

Description of the invention

The invention relates to systems of automatic control of objects/ in particular systems of automatic control of 2 gas turbine engines (GTE) of aircraft.

Known systems: "Gas turbine engine control system" (see patent of Ukraine Mo 2101, class РО2С9/28), which includes an alarm unit, a reconfiguration control unit, a failure generation unit/ a unit of "n" - input elements "I", a unit of connection with the executive elements, the installation shaper block, the permission signal block, the control block, the "AND" element block, the "OR" element, the counter, the "No" element, the program block, the debugging level "tip" change block, the "tach" change block " debug level, block of elements "OR", block of sensor control, block of rotation failure, block of measurement of revolutions, control frequency encoder, element "1". "System of control and control of gas turbine engine parameters" (see patent of Ukraine Mo 22952, cl.

Е02С9/28), which contains a signaling unit, a reconfiguration control unit, a failure forming unit, a unit "n" - input elements "I", a communication unit with executive elements, a unit forming units, two blocks of permission signals, a control unit, two block of elements "AND", element "OR", counter, element "NOT", program block, block of change of the minimum level of agreement, block of change of the maximum level of agreement, block of elements "OR", sensor control block, block of rotation failure, block of measurement of revolutions , control frequency encoder, "I" element, commutator, analog-to-digital converter, operating unit, memory unit, start-up unit.

The above-mentioned systems do not provide registration of system channel failures.

The closest in terms of technical essence and achievable effect in relation to this technical solution is the well-known "Control and control system of gas turbine engine parameters" (see patent of Ukraine Mo 38854, class ГО2С9/28), which contains an alarm unit connected to a reset control unit, block of failure formation, launch block, block of permission signals, block "n" - input elements "1", the output of which is connected through the block of communication with executive elements and the block of shapers of the installation to the block of signals Ge) of permission, the output of the control unit connected to the signaling unit, the first block of "AND" elements and the "OR" element, the output of which is connected to the counter and the "AND" element, the second input of which is connected to the output of the counter, and the second and third inputs of the counter directly and through the element "NO" are connected to the program block, the output of which through the blocks for changing the minimum and maximum debugging levels and the block of elements - "OR" is connected to the signal block, the output of the program of the block is also connected to the reset control unit, the outputs of which are directly connected to the blocks for changing the minimum and maximum debugging levels and the first block of "AND" elements, the last input of which is connected to the output of the "NO" element and one from the inputs of the communication block with the executive elements, the output of the block of elements "I" through the block of formation of I and failure is connected to the block "n" - input elements "I" and the element "OR", the rest of the inputs of which are connected to the outputs of the sensor control unit, the rotation failure unit, which is connected by the same circuit to the input of the second block of elements "I", the input circuit of the system, from the rotation sensor, is connected to the input of the sensor control unit and the rotation measurement unit, the outputs of which are "connected to the second block of "I" elements, the rotation failure block, and to the program block, the output of which is connected through the control frequency encoder to the rotation measurement block, "and the rest of the inputs of which are connected to the sensor control block and the program block, the rest the outputs of which are connected to the block "n" - input elements "I", the failure formation block, the second block of "I" elements, the block of rotation failure, the block of permission signals, the communication block with executive elements, the last input of which connected to the output of the second unit of elements "1", the second output of the communication unit with the executive elements is the system outputs, and the third input of the signaling unit is the second system input, the switch input is connected to the output of the signaling unit, and the output through analog - the digital converter is connected to the operating unit, the outputs of which b" 75 are connected to the switch and the control unit for issuing commands, the second input of which is connected to the output of the unit for measuring revolutions, the output of the control unit for issuing commands is connected to the communication unit connection with the executive (av) elements, the input-output of the memory unit is connected to the input-output of the operating unit, the input of the control unit is connected to the output of the signaling unit, the output of the permission signal unit is connected to the second input through the start-up unit the house of the program block, the second output of the permission signal block is connected to the last input of the block "n" - -I 50 input elements "I", the control command control block is connected to the outputs of the communication block with executive -h elements and the system output , as well as with the inputs-outputs of the operating unit.

This system does not provide: - failure identification of the corresponding channel of the system (the system issues only an integral failure signal); - continuous channel-by-channel recording in the memory block through the operational block of failure signals from the output of block 59 generating a failure in the event of a failure of the signaling unit and signals from the output of the revolutions failure unit in the event of failure

GF) of the unit for measuring rotations when the gas turbine engine is running. t Therefore, to reduce the time of searching for failures in the system, especially when system channel failures occur in the transient modes of operation of the gas turbine engine, where there are very significant interference signals both from the electromagnetic influence of the electric units of the gas turbine engine and from vibration loads (because there are variable contacts in electrical circuits) and its repair, it is necessary to improve the specified system.

In the case of improving the system, its functional capabilities are expanded, the controllability and operational characteristics of the system are increased, and the time for finding a failure and repairing the system is reduced.

In addition, the utilization rate of system equipment increases. because the purpose of the invention is to expand the functional capabilities, increase the utilization rate of the equipment, controllability and operational characteristics of the system.

The specified goal is achieved by the fact that in a known system that has a signaling unit connected to a reset control unit, a failure formation unit, a start-up unit, a permission signal unit, a "n" unit - input elements "I", the output of which is through a communication unit with executive elements and the unit of the device shapers is connected to the block of permission signals, the output of the control unit is connected to the signaling unit, the first block of "AND" elements and the "OR" element, the output of which is connected to the counter and the "AND" element, the second input of which is connected to the output of the counter, and the second and third inputs of the counter are directly and through the "NO" element connected to the program block, the output of which is through the blocks of changing the minimum and maximum levels /o debugging and the block of "OR" elements with connected to the signaling unit/ the output of the software unit is also connected to the reconfiguration control unit, the outputs of which are directly connected to the units for changing the minimum and maximum levels of debugging and reconfiguration this block of elements "I", the last input of which is connected to the output of the element "NO" and one of the inputs of the communication block with executive elements, the output of the block of elements "I" is connected to the block "n" through the block of failure formation - of the input elements "AND" and the element "OR", the remaining inputs of which are connected to the outputs of the sensor control unit and the rotation failure unit, which is connected by the same circuit to the input of the second block of elements "AND", the first input circuit of the system with connected to the input of the sensor control unit and the rotation measurement unit, the outputs of which are connected to the rotation failure unit, the second block of "I" elements and the program unit, the output of which is connected through the control frequency encoder to the rotation measurement unit, the rest of the inputs of which are connected connected to the sensor control unit and the program unit, the remaining outputs of which are connected to the "n" unit - the "I" input elements, the failure formation unit, the rotation failure unit, the permission signal unit, the communication unit with the executive elements, the last input of which with united with the output of the second block of "I" elements, the output of the communication block with executive elements is the system output, and the third input of the signaling unit is the second system input, the switch input is connected to the output of the signaling unit, and the output through the analog-to-digital converter is connected with the operating unit, the outputs of which are connected to the switchboard and the control unit for issuing commands/ the second input of which is connected to the output of the unit for measuring revolutions, the output of the control unit for issuing commands is connected to the communication unit with executive elements, and) the input-output of the memory unit is connected to the input-output of the operating unit, the input of the control unit is connected to the output of the signaling unit, the output of the permission signal unit through the start-up unit is connected to the second input of the program unit, the second output of the permission signal unit with connected to the last input of the block "n" - input Mzo elements "I", the control command control block is connected to the outputs of the communication block with executive elements and the output of the system, as well as to the inputs - outputs odes of the operating unit, a digital-to-analog converter unit and an analysis unit are additionally introduced, the inputs of which are connected to the failure formation unit and the rotation failure unit, and the output of the analysis unit through the digital-to-analog converter unit is connected to the switch, the last inputs of the operating unit are connected to the control unit, the sensor control unit and the rotation measuring unit, and the last input of the communication unit with executive elements is connected to element "1". "at

The introduction of additional features into the system, namely: the analysis block and the digital-to-analog converter block allows to ensure: - failure identification of the corresponding channel of the system; - continuous channel-by-channel recording in the memory block through the operating block of failure signals from the output of the block "formation of failure in case of failure of the signaling unit and signals from the output of the revolutions failure unit in case of sleep failure) from the unit for measuring revolutions when the gas turbine engine is running. And when the gas turbine engine is not working, identification of the failure of the corresponding channel of the system will be with the help of ground-based reading equipment with the condition that it is connected to the operating unit; - increasing the utilization rate of the switch, analog-to-digital converter, operating unit and memory unit. b As we can see from the above, the claimed technical solution according to the invention has significant features that allow to expand the functional capabilities, increase the utilization rate of the equipment, controllability and o operational characteristics of the system, which in turn will reduce the time for searching for failures in the system, its o repair and reduce the cost of operation, as well as reduce the idleness of aircraft equipment.

The principle of operation of the system is explained by the drawings where: Fig. 1 shows the structural diagram of the system; in Fig. 2, sh- is an example of a specific implementation of the control command control block; Fig. 3 is a concrete example

And filling out the control unit for issuing commands.

The system includes unit 1 of signaling devices, unit 2 of reconfiguration control, unit Z of failure formation, unit 4 of "n" input elements "I", unit 5 of communication with executive elements, unit b of installation shapers, unit 7 of analysis, unit 8 of control, the first block of 9 elements "AND", element 10 "OR", counter 11, element 12 "AND", element 13 "NO", program block 14, block 15 of changing the minimum debug level, block 16 of changing (F) the maximum debug level, unit 17 of "OR" elements, unit 18 of sensor control, unit 19 of failure of revolutions, the second unit of 20 "AND" elements, unit 21 of measurement of revolutions, encoder 22 of the control frequency, unit 23 of control of control commands, switch 24, analog-to-digital converter 25 , operating unit 26, unit 27 of the Digital-to-analog converter, memory unit 28, start-up unit 29, permission signal unit 31, and command output control unit 31.

Block 1 of signaling devices includes block 32 of normalizers and block 33 of boundary restrictions.

Block 23 control control commands contains a parallel-serial register 34 and block 35 galvanic separation. 65 Block 31 of command issuing control contains series-parallel register Z6 and block 37 of keys.

Block 1 of signaling devices is connected by the first output to block 2 of the reset control, block Z of failure formation, block 29 of launch, block 30 of permission signals and block 4 of "n" - input elements "1", the output of which is through block 5 of communication with the executive elements and block b of the installation formers is connected to the block

ZO of permission signals/ the output of control unit 8 is connected to unit 1 of signaling devices, unit 9 of "And" elements, operating unit 26 and element 10 "OR", the output of which is connected to counter 11 and element 12 "And", the second input which is connected to the output of the counter 11, the second and third inputs of the counter 11 directly and through element 13 "NO" are connected to the program block 14, the output of which through blocks 15 and 16 of changing the minimum and maximum debugging level and block 17 of "OR" elements " is connected to the unit 1 of the signaling devices, the output of the program unit 14 is connected to the unit 2 of the reset control, the outputs of which are directly connected to the units 15 and 16 of changing the minimum and maximum debugging level and the unit 9 of the "I" elements, the last input which is connected to the output of element 13 "NO" and to one input of block 5 of communication with executive elements, the output of block 9 of elements "I" through the block Z of failure formation is connected to block 4 of "n'-input elements "I " and element 10 "OR", the rest and the inputs of which are connected to the outputs of the sensor control unit 18 and the rotation failure unit 19, which is connected by the same circuit to the input of the second unit 20 elements "I", input /5 of the system, from the rotation sensor, connected to the input of the sensor control unit 18 and the rotation measurement unit 21, the outputs of which are connected to the rotation failure unit 19, the "I" element unit 20, and the program unit 14, the output of which is connected to the rotation measurement unit 21 through the control frequency encoder 22, the remaining inputs of which are connected to the sensor control unit 18 and the program unit 14, the remaining outputs of which are connected to the unit 4 of the "n'-input elements "I", the unit C of failure formation, the second unit 20 of the "I" elements, the unit 19 rotation failure, block ZO of permission signals and block 5 of communication with executive elements, the last inputs of which are connected to the output of element 12 "I" and the second block 20 of elements "I", the second output of block 5 of communication with executive elements is outputs of the system, and the third input of block 1 of signaling devices is d the second input of the system, the input of the switch 24 is connected to the outputs of the unit 1 of the signaling devices and the unit 27 of the digital-to-analog converter, and the output to the analog-to-digital converter 25, the third input of the switch 24 is connected to the output of the operating unit 26, the input of which connected to the output of the analog-to-digital converter 25, the memory unit 28 is connected to the input-output of the operating unit 26, the input of the control unit 8 is connected to the output of the signaling unit 1, unit (8)

ZO of permission signals through block 29 of the launch is connected to the last input of program block 14. The last output of block 30 of permission signals is connected to the last input of block 4 of "n'-input elements "I". The inputs of block 31 control of issuing commands are connected with the outputs of the unit 21 measuring revolutions and the operating unit 26, and the output M 7 With the unit 5 of communication with the executive elements, the control unit 23 of control commands is connected to the output of the unit 5 of communication with the executive elements connected with the executive elements and by the input-output of the operating unit - block 26. The 7th analysis unit is connected by input to the failure formation unit and 19 rotation failure unit, and by the output it is connected to the digital-to-analog converter unit 27, the last inputs of the operating unit 26 are connected with control unit 8, sensor control unit 18 and rotation measurement unit 21. o

Block 1 of signaling devices contains block 32 of normalizers, the input of which is connected to the second input of the system (from "o sensors), and its output is connected to the first input of block 33 of the boundary restrictions of block 1, the second and third inputs of block 33 are respectively connected to the outputs block 17 and 8, the output of block 33 is connected to blocks 2, 3, 4, 29 and 30. The last two outputs of block 32 are connected to block 8 and switch 24.

Unit 21 for measuring revolutions can be completed on a standard single-chip microprocessor. "

Control unit 23 of control commands contains a parallel-serial register 34, connected to the inputs - with outputs of the operating unit 26, the last inputs of the register 34 through the galvanic isolation unit 35 are connected to the output of the unit 5 connected to the executive elements. with Block 31 for controlling the issuing of commands includes a series-parallel register 36 connected to the output of the operating unit 26, and the output of the register 36 through the block 37 of keys is connected to the block 5 of communication with executive elements, in addition, the second input of the register 36 with connected to unit 21 for measuring revolutions.

Ге» Control frequency selector 22 can be completed on the basis of generators of sinusoidal oscillations. The launch unit 29 can be shown as a set of elements "I" and a generator of clock pulses or generators of pulses, which are performed on a single-vibrator microcircuit. A block of 30 enable signals is presented, for example, as a set of counter triggers. Block b of the formers of the installation can be completed on the basis of microcircuits of formers and single vibrators. Block 19 of the failure of revolutions can be completed, for example, on the basis of a counting trigger.

Ш- The number of elements "I" in block 20 correspond to the number of measured levels of revolutions of the gas turbine engine, "M and the number of formers in block 6 corresponds to the number of parameters controlled by block 1 of signaling devices. Block 7 of the analysis can be completed on a standard single-crystal microprocessor. Switch 24, analog- Diff converter 25 and DAC block 27 can be implemented on two standard chips Memory block 28 can be implemented on standard flash memory chips.

Operating unit 26 can be completed on the basis of a standard multifunctional processor which

F) can use both internal and external memory (not shown in the drawing), which, in addition to computing functions, also has the function of measuring time intervals, as well as the function of receiving and issuing coded and single signals. The program unit 14 can work automatically according to the start signals from the start-up units 29 and 21 for measuring revolutions when the engine is running, as well as according to the request commands of the automated control system (ACS) of the object or the flight engineer's console.

The system works as follows.

When the power supply voltage is turned on, the system is set to the initial state, after which blocks 1, 21 and 26 6b5 begin to function according to the set algorithm. Signals from the program unit 14 are not issued except for the signals allowing the passage of unit 1 commands through unit 4 and the signal that comes to element 13 "NO". At the output of element 13 "NO" appears a signal that prohibits the operation of block C through elements "I" of block 9, memory elements of block 5 of communication with executive elements and counter 11.

Block 30 of the permission signals issues signals to the block 29 of the start, which allow the start of the software block 14 at the appearance of signals at the output of the block 1, indicating that the engine parameters have reached the limit values and signals to the block 4 of "n"'-input elements "I" which prohibit its operation.

When the engine is running, the signals from the sensors are sent to the unit 32 of the normalizers of the unit 1 of the signaling devices, where they are converted into a set level of constant voltage convenient both for analog-to-digital conversion and for use by the unit 33 of the boundary restrictions of the unit 1 and the control unit 8, functioning according to the set /o algorithms. The limiters of unit 33 of unit 1 are adjusted to the limit values of the parameters (both minimum and maximum) and issue commands both upon reaching the emergency operating modes of the gas turbine engine and upon reaching the specified (non-emergency) operating modes to turn on the engine automation.

During the operation of the system, both a sequential check of the technical condition of unit 21 and then of unit 1 is performed at the request of the ACS or the flight engineer, as well as an automatic check when the parameters of the gas turbine /5 engine reach the limit (set) value during its operation.

From the speed sensor (not shown), a frequency signal proportional to the engine speed is sent to block 21, which processes it according to the given algorithm. When the circuit of the speed sensor is broken, a signal / appears at the output of block 18, which prohibits the output of signals of the applied speed levels from block 21 and enters through element 10 "OR" to the input of counter 11, where it is registered during the operation of software block 14.

Upon reaching the specified level of revolutions, in the absence of a violation of the sensor chain, unit 21 issues a signal to start the software unit 14. After receiving the start signal from unit 21, the software unit 14 on circuit 14-1 removes the signal from element 13 "NO", as a result of which at the output at the latter, a signal appears that enables the functioning of memory elements - triggers of unit 5 of communication with executive elements, as well as unit 9 of "I" elements and counter 11. Next, program unit 14 issues a signal to unit 5 via chain 14-2 and fixes with the help of triggers the state of the outputs of the unit 21 for measuring revolutions. If the signal about reaching the specified speed level is issued by block 21 through block 20 of "I" elements, it is fixed by block 5 during the self-check. and)

This ensures the continuity of issuing commands to the executive elements for the duration of self-control of unit 21.

Next, with the given time interval "T" after issuing a signal to unit 5, the program unit 14 issues via chain M

From 14-3, the signal to the revolution measuring unit 21, which prohibits the passage of the speed sensor signal (not shown) and allows the passage of the pulses of the control frequency timer 22 along the path of the unit 21. The signal which - is issued by the program unit 14 to the unit 21 on the circuit 14-3 , also removes the prohibition signal coming from unit 18 in the event of a sensor chain violation and prevents issuing commands from unit 21 during self-monitoring. The control frequency from the encoder 22 ensures the fixation of all measured levels of revolutions by block 21. If the revolution measurement unit 21 is working, then it does not issue a signal to the revolution failure unit 19. If there are malfunctions in the path of block 21, it sends a signal to block 19 of the failure of revolutions, which will ensure the fixation of the failure when receiving signals from block 14.

With a time interval determined by the speed of the rotation measurement path of block 21, a signal is sent to the input of block 19 via circuit 14-4. If there is no disturbance in the functioning of the rotation measurement path, then the failure is not recorded in block "19. If there is a violation in the functioning of the rotation measurement path, then a failure is recorded in block 19 with c. The failure signal from block 19 reaches block 20 of the "I" elements and prohibits the passage of signals from block 21 after the end of self-monitoring. ;" With the time interval "T" from the end of signal 14-4 to block 19, a signal is received from block 14 to setter 22 of the control frequency through circuit 14-5, which causes its mode of operation, in which the input of block 21 receives a frequency signal that removes the fixation of all measured levels of rotation.

Ge» Under the influence of the signal from the encoder 22, the measuring path of the unit 21 processes the control signal and removes the fixation of all the measured levels of revolutions, which indicates the serviceability of the measuring path of the unit 21. o If the revolution measurement unit 21 is working, then it does not issue a signal to the revolution failure unit 19 . If there are malfunctions in the path of block 21, it sends a signal to block 19 of the failure of revolutions, which will ensure the fixation of the failure when receiving signals from block 14.

Ш- With a time interval determined by the speed of the rotation measurement path of block 21, a signal is sent to the input of block 19 via "M" of circuit 14-6. If there is no malfunction in the operation of the rotation measurement path, then the failure is not recorded in block 19. If there is a malfunction in functioning path of rotation measurement, then a failure is detected in block 19. The failure signal from block 19 reaches block 20 of the "I" elements and prohibits the passage of signals from block 21 through them after the end of self-monitoring. In addition, the failure signal from block 19 is sent to block 7 of the analysis (F) After that, the signals that came via circuits 14-3 and 14-5 from the output of block 14 to block 21 and the encoder 22 are removed. At the same time, the signal from encoder 22 of the control frequency, which passes to the measuring path of block 21, is stopped to the initial state, and the measuring path of block 21 receives a signal from the speed sensor of the gas turbine engine.

In addition, from the unit 21, a signal in the form of rectangular pulses, the period of which is proportional to the number of revolutions of the gas turbine engine, is sent to the operating unit 26.

When changing the operating mode of the gas turbine engine, the revolutions reach the next higher level, a signal appears at the output of block 21, which starts the program block 14. At the same time, the self-monitoring cycle 65 of block 21, described above, is repeated.

Thus, signals about the achievement of the set speed levels are sent to the executive elements only after passing the self-check, absence of failures in the path of measurement of the speed levels of block 21 and only upon repeated confirmation of the achievement of the set speed level. After checking the technical condition of unit 21 of revolution measurement, you can start checking the technical condition of unit 1 of signaling devices.

After checking the technical condition of unit 21 of revolution measurement (in the case of a sequential check), the technical condition check of unit 1 of the signaling devices begins.

Checking the technical condition of block 1 of signaling devices consists of the following.

The program block 14 on the chain 14-7 issues a signal to the input of block 5 and fixes in it with the help of triggers the state of the outputs of block 1 of signaling devices, if there is an enabling signal from the block 30 of the enabling signals at the input 70 of the corresponding element "I" of block 4.

If the signal that the corresponding parameter has reached the set value is issued by block 33 of block 1 through block 4 of the "I" elements and an enabling signal is received from block 30 at the input of the corresponding element "I" of block 4, then it is fixed by block 5 during the self-check.

Simultaneously with sending a signal to block 5 via circuit 14-7, program block 14 via circuit 14-8 sends a signal /5 to reset control block 2, which fixes the initial state of block 33 of boundary restrictions of block 1 to ensure their reset to issue or remove signals from outputs of unit 1 and to control the operation of the unit Z forming a failure through unit 9 of the "I" elements.

Then, a signal is sent from the program unit 14 through the chain 14-9 to unit 4 and prohibits the passing of commands from unit 1 of signaling devices to unit 5 of communication with executive elements. The following command, which arrives 2o on the chain 14-10 in accordance with blocks 15 and 16 of changing the minimum and maximum debugging level, in the presence of appropriate signals from the reset control unit 2, resets block 33 of block 1 to issue signals (if signals have not been issued until now) or for their removal (if signals have been issued up to that time). At the same time, signals do not pass through block 4 of the "n" input elements "I" due to the presence of a prohibiting signal at its input from the program block 14. c

If the reconfiguration of block 33 of block 1 is done in accordance with the self-monitoring algorithm determined by the signals from the output of block 1 that come directly, and the signals that come from the output of block 2 i) control of the reconfiguration through block 9 of the "I" elements to block C of failure formation, then the failure in block 3, upon receipt of the next command on chain 14-11 from software block 14, is not recorded. The block of 9 elements "I" is designed to control the operation of the block C in order to increase its interference resistance. If Mzo readjustment of one of the channels of block 33 of the boundary restrictions of block 1 due to a violation of its sensor chain does not occur in accordance with the control algorithm, then due to the action of the prohibiting signal from block 8 on the input of the corresponding element "I" of block 9 in block C, a failure is also not recorded on this channel. at

If at least one of the channels of unit 1 does not emit a signal (as a result of reconfiguration, and it should have emitted it), or does not remove the signal even though it should have removed it from the output (in the absence of a violation of the sensor circuit), then as the signal arrives from program block 14, a failure is recorded in block C. The failure signal "o" is received at the input of element "I" of block 4, corresponding to the failed channel. This eliminates the false issuance of signals to the executive elements after passing the self-check. In addition, the failure signal through the "OR" element 10 enters the input of the counter 11 and is recorded in it when the signal is received through the circuit 14-12 from the program block 14. When the signal is received through the circuit 14-12 in the counter 11, the failure of the block 21 is also recorded rev measurement and sensor circuit disruption of both annunciators and revs. At the same time as the program unit 14 issues a signal to the counter 11, it removes the reconfiguration command from units 15 and 16 through the circuit 14-10 to change the minimum and maximum debugging levels and the channels of unit 33 of unit 1;" are readjusted to the imposed (working) levels of restrictions.

Since the signals from the sensors of the controlled parameters will correspond to the imposed limit levels, signals will be issued at the output of unit 1 of the signaling devices, which will enter the inputs of unit 29 of the launch, unit 30

Ge" of permission signals and block 4 of "n'-input elements "I". With a time interval after removing the signal on circuit 14-10 from block 14 on circuit 14-13, a signal is issued, under the action of which the triggers of block 30, on the control inputs o in which there are signals of reaching the limit values by the parameters, change their initial state. At the same time, signals that prohibit the start of block 14 will be received at the corresponding inputs of the start block 29, and signals corresponding to the set levels will be received at the corresponding 5p elements "I" of block 4 limiting the parameters, allowing passage through them to block 5 and further to the executive elements. "M After that, the prohibiting signal, which came through circuit 14-9 of block 14, is removed, and a signal is issued, allowing the passage of signals of the imposed parameter limitation levels through block 4 of "n'-input elements "I" and then through block 5 to executive elements.

From the above, we can see that block 30 of the permission signals ensures the issuing of commands, the imposed levels of limitation of parameters, to executive elements upon reaching the imposed levels of limitation only after

Ф) control of the functioning of unit 1 of signaling devices. This eliminates the false issuance of signals to the executive elements.

If, when changing the operation mode of the gas turbine engine, the value of the parameter became below the limit level, then the signal at the input of block 5 is removed. Removing the signal of the applied restriction level from the output of block 5 leads to the appearance of a signal at the output of the corresponding generator of block 6, which sets the corresponding trigger in the block 30 of permission signals to the initial state, in which the corresponding element of block 4 will receive a signal prohibiting the passage of commands to the executive element corresponding levels of parameter limitation, and to block 29 - a signal allowing the start of the software block 14 upon re-attainment of the previously removed signal 65 of the applied parameter limitation level.

Thus, the executive elements receive signals about reaching the limit levels of the parameter limitation only after passing the self-check, the absence of failures in the path of block 1 of the signaling devices, and only when the parameter reaches its limit value again. The latter removes the signal that comes from the program unit 14 to the input of element 13 "NO" on circuit 14-1 and the program unit 14 is set to the initial state.

If the sensor circuit of one of the channels of block 33 of block 1 is broken or one of the normalizers of block 32 of block 1 fails, which leads to the disappearance of the signal at its output, which is equivalent to an emergency state of the gas turbine engine, for example, according to the minimum oil pressure in the engine oil system, or to an increase signal at the input of the corresponding channel of block 33 of block 1, which is also equivalent to the emergency state of the engine/ for example/ due to /about the maximum oil temperature in the engine oil system, a signal will appear at the output of block 8, which, affecting the corresponding channel of block 33, in the sensor circuit which normalizer of block 32 was violated, forbids them from issuing a command to the executive element.

The signal about the violation of the sensor circuit in case of failure of the normalizer of block 32 of block 1 from the output of block 8 also reaches the corresponding element "I" of block 9 and, thus, prohibits the generation of a failure signal on the /5 Current channel in block C when passing self-control, as it is violated mode of operation of the alarm in the event of failures in the sensor circuit. The failure of the corresponding normalizer of block 32 of block 1 will be detected by the consequences of decryption of the flight data registered in the block 28 of the memory after each flight of the aircraft.

In addition, a signal about a violation of the sensor circuit or a failure of the normalizer of block 32 of block 1 through the "OR" element is received at the input of the counter 11 and is fixed in it when passing the self-check.

If a short-term violation of the sensor circuit occurred during the period of lack of self-control, for a time longer than the time constant of the normalizers of block 32 of block 1, then only the issuance of an erroneous command from the output of the corresponding channel of block 33 of block 1 will be prohibited. If the command is issued due to the failure of one of the channels of block 33 block 1, then during self-monitoring, the failure of the corresponding channel is recorded, and in this case, the command is not issued to the executive element. If during the passage of several control cycles, for example three cycles, at the output of block C, a failure signal of at least one channel of block 33 of block 1 is stored, in the event of a violation of at least one of the controlled sensor chains or failure of at least one of the channels of block 32 of block 1, as well as when (8) a failure signal appears at the output of block 19, a stable failure signal or sensor chain violation is issued at the output of counter 11. If there is a signal from the output of counter 11 and element 10 "OR", a signal appears at the output of element 12 "I", which is sent to the on-board registration system through block 5 and is registered in block 28 through blocks M zo 23126.

In the event of a short-term accidental disruption of the sensor circuit during the action of vibration loads, or - receiving a failure signal of the alarm unit 33 of unit 1, or unit 21 of the measurement of revolutions from an accidental failure during functioning or self-monitoring, the next control cycle does not provide confirmation of the specified failures, as a result of which the counter 11 is reset to zero , that is, returns to the initial state. at

The automatic mode of control of the functioning of the block 1 tract according to the start signal from the block 29 is determined as follows. When one of the parameters reaches its limit value, block 1 issues a signal to start-up block 29, which, due to the presence of enabling signals from block 30 of enable signals at its second input, issues a signal to start software block 14. After receiving a signal from block 29 program block 14 on circuit 14-1 removes the signal from element 13 "NO", as a result of which a signal appears at its output, which allows "functioning of memory elements of block 5 of communication with executive elements, block 9 of elements "I" and from c of counter 11.

Next, the program block 14 sends a signal to block 5 through chain 14-7 and fixes the state of the outputs of block 1 with the help of triggers, if there is an enabling signal at the input of block 4 of "n'-input elements "I", which comes from block 30 of enabling signals .

If the signal indicating that the parameter has reached its limit value is issued by block 1 through

If block 4 of elements "I" has an enabling signal from block 30 at its input, it is fixed by block 5 for the period of self-monitoring. This ensures the continuity of issuing commands to the executive elements o for the period of self-monitoring of unit 1. o Simultaneously with the issuance of a signal to unit 5 through chain 14-7, program unit 14 through chain 14-8 issues signal 5o to unit 2 of the reset control and control cycle of the unit’s operation 1 is performed according to the above-mentioned algorithm. "M The failure signals of the channels of block 1 and block 21 from the outputs of the block Z of failure formation and block 19 of the failure of revolutions enter the inputs of the analysis block 7. Each failure signal at the output of block 7 corresponds to the given value of the binary code that enters the input of block 27 of the digital-analog every two values of the binary code at the output of block 27 will have a corresponding value of the constant voltage that enters the input of the switch 24. As a result, the failure (F) of the corresponding channel of block 1 and 21 is coded by the corresponding levels of constant voltage from the output of block 27. ka Registration of current values the parameters of the gas turbine engine from its start to stop, the failure of the channels of the unit 1 and 21, as well as the state of the sensor circuits are performed in the following order: in the operating unit 26 outputs signals, for example, in the form of a binary code, to the switch 24 to alternately connect the signals from the output of the unit 32 normalizers of block 1, the values of which characterize the state of the parameters of the gas turbine engine and the signal iv from the output of block 27, the value of which characterizes the state of failures in the channels of blocks 1 and 21. As a result, the signal from the output of block 32 of block 1 through the switch 24 is sent to the analog-to-digital converter 25, where it is converted into a binary code. With a time interval determined 65 by the bystrodia of the converter 25, after issuing a signal from the output of the switch 24 to its input, the operating unit 26 registers the binary code from the output of the analog-to-digital converter 25 in its memory.

After the conversion of all analog signals from the output of block 32 of block 1 and block 27, as well as recording the conversion results in the memory of block 26, the latter stops issuing signals to the switch 24.

As mentioned above, a sequence of rectangular pulses, the period of which is proportional to the number of revolutions of the gas turbine engine, is supplied from the output of the revolution measuring unit 21 to the input of the operating unit 26. In addition, signals that indicate a violation in the circuits of analog and frequency sensors from the output of blocks 8 and 18 are fed to the input of the operating block 26.

As a result of the further functioning of the operating unit 26, the pulse sequence coming from the output of the unit 21 is converted into a binary code. Signals that indicate a violation in the circuits of analog / o and frequency sensors from the output of blocks 8 and 18 and a binary code proportional to engine revolutions are fixed in the memory of the operating block 26.

The operating unit 26, from the information recorded in its memory, forms a frame, which is rewritten to the corresponding addresses of the memory unit 28.

This completes the cycle of recording the parameters of the gas turbine engine, the state of the sensor circuits and failures in /5 Measuring channels of the system in the memory of the unit 28, after which the operating unit 26 issues signals to the switch 24 and the cycle of recording information that characterizes the state of the parameters of the gas turbine engine, circuits of sensors and failures in the measuring channels of the system is repeated according to the algorithm described above.

When the engine is running, the output commands, for example, in the form of on-board voltage, the value of which can be, for example, plus 27 volts, are sent from unit 5 to the input of unit 35 of the galvanic isolation unit 23 of the Control Commands control. Block 35 of block 23 is intended for galvanic decoupling of the on-board network of the aircraft and the power supply voltage of the blocks and elements of the gas turbine engine control and control system to ensure its immunity. When the voltage of the on-board network is received at the inputs of the unit 35 of the unit 23, at its corresponding outputs, signals are obtained, for example, in the form of a logical "I", which are received at the inputs of the parallel-serial register 34 of the unit 23 and are registered in it according to the signal from the operating unit 26. Then FROM the OUTPUT of the operating block 26 to the clock input of the register 34 of the block 23, clock pulses are received under the influence of which the signals registered in the register 34 of the block 23, from the output of the block 34 of the block 23, for example, in the form of i) a unipolar sequential binary code, are received at the input of the block 26 and are fixed in his memory.

The operating unit 26, from the information recorded in its memory, which characterizes the state of the output commands of the system, forms a frame, which is rewritten by it to the corresponding addresses of the memory unit 28. This completes the M zo cycle of Recording the output commands of the system, which are sent to the executive elements of the gas turbine engine and the aircraft, in the memory of block 28. -

After the flight of the aircraft or the ground races of the engines is completed, a reading device is connected to the system, which outputs information to the input of the operating unit 26 through the communication chain, for example, in the form of a binary code, under the influence of which the unit 26 switches to the mode of reading the accumulated information about the unit 28 memory. In this mode, the operating unit 26 outputs sequential address code values to the unit 28 to "ensure sequential reading of the binary code (accumulated information") through the operating unit 26.

The read information goes to the flight data decryption center, where the state of the system's output commands, the state of the parameters of the gas turbine engine in the same account and sensor chains, as well as the presence of failures in the measuring channels of the system are analyzed, and the need to carry out various "preventive (repair) measures or subsequent its exploitation. With an engine that is not working, for example, during the production of an aircraft or after its overhaul, as well as when performing routine work / searching for failures in the chains of executive elements, or ;" to check the functioning of the executive elements themselves, ground equipment is connected to the system, which sends information to the input of the operational unit 26 via the communication line, for example, in the form of a sequential unipolar binary code, under the influence of which the unit 26 switches to the mode of monitoring the state of the output circuits of the system.

Ge" When the gas turbine engine is not working, commands in the form of voltage plus 27 volts at the output of unit 5 must be absent. Issuance of commands by block 5 indicates its malfunction. To determine the serviceability of the system, the ground equipment connected to block 26 issues code parcels and block 26 goes into the mode of monitoring the presence of outgoing commands from block 5. Then the system works according to the control command control algorithm described above when the engine is running. In the event that the block issues 5 erroneous commands, the system is missing and a working system is installed instead.

And To check the issuing of commands by block 5 of the system, when the engines are not working, as well as to check the operability of executive elements (various units of the aircraft and the gas turbine engine) and communication lines with them, for example, when performing routine work or checking on-board circuits and the operability of units during the production of the aircraft or after major repairs, the ground equipment issues code parcels to block 26, which switches to the mode of operation with block 31 for controlling the issuing of commands. In this mode (Ф) from the output of the block 26 to the input of the series-parallel register 36 of the block 31, a serial unipolar ka binary code is received, which is converted into a parallel binary code in the Zb register of the block 31. As a result of the conversion, signals appear at the outputs of the register, for example, in the form of a logical "1", which enter the inputs of block 37 of block 31. Moreover, the number of channels in block 37 of block 31 corresponds to the number of outputs of block 5 of the system. When the engine is not working, a signal is sent to the last input of the series-parallel register 36 of the block 31 from the output of the block "21, for example, in the form of a logical "17, which allows the passage of signals from the output of the register 36 of the block 31 to the input of the block 37 of the keys of the block 31, the outputs of which connected to the inputs of block 5 of communication with executive elements. 65 When a signal arrives, for example, in the form of a logical "1" at the corresponding input of block 37 of block 31, the corresponding key of block 37 of block 31 is opened and affecting the corresponding output element of block 5,

for example, on the relay, as a result of which the relay activates, closes its contacts and at the output of block 5, and accordingly

A command appears at the output of the system, for example, in the form of a voltage of plus 27 volts. The presence of the command at the output of the system indicates that the system is working, and the absence of the command indicates that the system has failed. Day off

The command of block 5, if the chains and the executive elements themselves are in good condition, includes the appropriate unit of the aircraft or gas turbine engine. The activation of the executive element indicates the serviceability of it itself and the lines of communication with it. In the case of failure of the executive element, the cause of the failure is determined, which consists in checking the presence of the output command of block 5 of the system (checked according to the command control algorithm described above when the engine is running), the communication line and the functioning of the executive element itself. 7/0 Identified malfunctions are eliminated.

To determine the presence of an outgoing command, and, accordingly, the system's serviceability, the ground equipment connected to unit 26 issues code parcels and unit 26 switches to the mode of monitoring the presence of outgoing commands of unit 5. Further, the system works according to the control command control algorithm described above while the engine is running. This concludes the check of the system, executive elements and lines of communication with them.

To prevent the issuing of erroneous control commands to unit 31, when the engine is running, a signal is sent to its input from unit 21, for example/ in the form of a logical "0" that blocks the operation of unit 31. This prevents the unauthorized influence of unit 31 on the operation of unit 5 when the engine is running .

The invention makes it possible to eliminate emergency situations on board the aircraft by eliminating the issuance of erroneous commands by means of self-monitoring of the signaling unit and the 2o rotation measuring unit before issuing commands to the executive elements and thereby increasing flight safety.

The technical solution according to the invention also by ensuring the registration of parameters that characterize the state of the parameters of the gas turbine engine and the control and control system itself, the state of the sensor circuits and the state of block 5 of the system, will allow to ensure reliable operation of the gas turbine engine according to the technical state, reduce the time to eliminate failures in the equipment of the system itself and the engine, the aircraft, and the circuits of sensors and, as a result, to increase the reliability and reduce the cost of operation of the gas turbine engine, as well as to reduce the idleness of aviation equipment. and)

Controlling the issuance of erroneous commands from the system output and the issuance of commands by the system to check the functioning of the executive elements and their communication lines when the engine is not working will allow to determine which specific executive element is in failure, or to determine the failure in the corresponding chain of the executive element of the gas turbine engine or aircraft apparatus, and as a result, reduce the time of searching for failures of executive elements and their chains, as well as reduce the inactivity of aviation equipment. -

In addition, the identification and registration of failures of the measuring channels of the management and control system (gu) will allow to determine which specific measuring channel is in failure and, as a result, reduce the time to restore the system, as well as reduce the inactivity of aviation equipment. o (Se)

MANAGEMENT AND CONTROL SYSTEM

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Claims (1)

The formula of the invention (Ce) The system of control and control of parameters of a gas turbine engine, which contains a block of signaling devices, connected to a block of control of readjustment, a block of forming a failure, a block of starting, a block of permission signals, a block of "n'-input elements "I", the output of which Through the communication block with the executive elements "lo And the block of shapers of the installation is connected to the block of permission signals, the output of the control block is connected to the block of signaling devices, the first block of "AND" elements and the "OR" element, the output of which from connected to the counter and the "I" element, the second input of which is connected to the output of the counter, and the second and third inputs of the "z" counter directly and through the "NO" element are connected to the program block, the output of which is through the blocks for changing the minimum and maximum debugging levels and the block of "OR" elements is connected to the alarm unit, the output of the software block is also connected to the reset control unit, the outputs of which are directly connected to the mine change blocks minimum and maximum debugging levels and the first block of elements "1", the last input of which is connected to the output of the element "NO" and one of the inputs of the block of communication with the executive ("in elements, the output of the block of elements "And" through the failure formation block connected to the "n"-input block of the "AND" elements and the "OR" element, the remaining inputs of which are connected to the outputs of the sensor control unit and the rotation failure unit, which is connected by the same circuit to the input of the second unit elements "I", the first input circuit - the system is connected to the input of the sensor control unit and the rotation measurement unit, the outputs of which are connected to the "M unit of rotation failure, the second unit of elements "I" and the program block, the output of which is through the setter of the control frequency is connected to the rotation measurement unit, the remaining inputs of which are connected to the sensor control unit and the program unit, the remaining outputs of which are connected to the "n'-input elements "I" unit, the failure forming unit, the rotation failure unit, the permission signals, communication unit in with executive elements, the last input of which is connected to the output of the second block of elements "I", the output of the communication block with (F; executive elements are the output of the system, and the third input of the signaling unit is the second input of the system, the input of the GI switch is connected to the output of the signaling unit, and the output through the analog-to-digital converter is connected to the operating unit, the outputs of which are connected to the switch and the unit control of issuing commands, the second input of Yako is connected to the output of the revolution measuring unit, the output of the command issuing control unit is connected to the communication unit with executive elements, the input-output of the memory unit is connected to the input-output of the operating unit , the input of the control unit is connected to the output of the signaling unit, the output of the authorization signal unit through the start unit is connected to the second input of the software unit, the second output of the authorization signal unit is connected to the last input of the block of "n'-input elements "I", the control command control unit is connected to the outputs of the communication unit with 65 executive elements and the output of the system, as well as to the inputs-outputs of the operating unit, which differs in that the system has an additional a digital-to-analog converter block and an analysis block are introduced, the inputs of which are connected to the failure formation block and the rotation failure block, and the output of the analysis block through the digital-to-analog converter block is connected to the switch, the last inputs of the operating block are connected to the block control, the sensor control unit and the rotation measurement unit, the last input of the communication unit with executive elements is connected to element "1". Official bulletin "Industrial Property". Book 1 "Inventions, useful models, topographies of integrated microcircuits", 2005, M 2, 15.02.2005. State Department of Intellectual Property of the Ministry of Education and Science of Ukraine. s schi 6) cha cha «c) «c) (Se) - with . and? (o) («c) («c) -And what is there) 60 b5