CN113309618B - Troubleshooting method for low-pressure rotating speed signal fluctuation of gas turbine - Google Patents
Troubleshooting method for low-pressure rotating speed signal fluctuation of gas turbine Download PDFInfo
- Publication number
- CN113309618B CN113309618B CN202110744749.7A CN202110744749A CN113309618B CN 113309618 B CN113309618 B CN 113309618B CN 202110744749 A CN202110744749 A CN 202110744749A CN 113309618 B CN113309618 B CN 113309618B
- Authority
- CN
- China
- Prior art keywords
- low
- rotating speed
- voltage rotating
- fault
- speed sensor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C9/00—Controlling gas-turbine plants; Controlling fuel supply in air- breathing jet-propulsion plants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
Abstract
The invention discloses a fault elimination method for low-pressure rotating speed signal fluctuation of a gas turbine, which comprises the following steps of 1, replacing a cable and a junction box; step 2, adjusting a gap between the low-voltage rotating speed sensor and the induction gear; step 3, detecting the waveform and frequency of the low-voltage rotating speed signal output by the low-voltage rotating speed signal conditioning board; step 4, adjusting the distance between the low-voltage rotating speed sensor and the motor; step 5, connecting an RC filter element on a port of a low-voltage rotating speed sensor controlled by a conditioning board in parallel; step 6, connecting a connecting terminal at the signal position of the low-voltage rotating speed sensor in parallel with an RC filter element; step 7, adjusting the low-voltage rotating speed signal switching terminal of the junction box and filtering elements; and 8, replacing the magnetic steel in the low-voltage rotating speed sensor to enable the diameter of the induction end of the magnetic steel to be smaller than the maximum tooth width of the testing tone wheel, and finishing fault removal. The signal of disturbing the rotational speed can be positioned fast, the troubleshooting period is greatly reduced. The magnetic induction intensity on the surface is improved, and the low-voltage rotating speed fluctuation fault is thoroughly avoided.
Description
Technical Field
The invention belongs to the field of aircraft engine fault elimination, and particularly belongs to a fault elimination method for low-pressure rotating speed signal fluctuation of a gas turbine.
Background
The gas turbine is an internal combustion type power machine which takes continuously flowing gas as a working medium to drive an impeller to rotate at a high speed and converts the energy of fuel into useful work, and is a rotary impeller type heat engine.
The gas turbine jumps at low pressure and rotating speed in the cold blowing operation ascending process, the starting process and the shutdown idling process, so that the gas generator is difficult to start, the air release valve is started to be abnormally switched, the fluctuation occurs in the shutdown idling process, and the maximum fluctuation is about 1000 r/min. The problem of long troubleshooting period and low efficiency of the troubleshooting method for low-pressure rotating speed signal fluctuation of the gas turbine in the prior art exists.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a troubleshooting method for low-pressure rotating speed signal fluctuation of a gas turbine, which can quickly position a signal interfering with the rotating speed and greatly reduce the troubleshooting period. And the structure of the low-voltage rotating speed sensor is improved, the surface magnetic induction intensity is improved, the anti-jamming capability is enhanced, and the low-voltage rotating speed fluctuation fault is thoroughly avoided.
In order to achieve the purpose, the invention provides the following technical scheme:
a method for eliminating the low-pressure rotation speed signal fluctuation of a gas turbine comprises the following steps,
step 1, replacing cables and junction boxes, eliminating hardware faults, and executing step 2 if the faults are not eliminated;
step 2, adjusting a gap between the low-pressure rotating speed sensor and the induction gear, confirming the influence of the gap on rotating speed fluctuation, and executing step 3 if the fault is not eliminated;
step 3, detecting whether the waveform and the frequency of the low-voltage rotating speed signal output by the low-voltage rotating speed signal conditioning board are stable or not and whether the low-voltage rotating speed signal does not jump or not, and if the fault is not eliminated, executing step 4;
step 6, connecting a connecting terminal at the signal position of the low-voltage rotating speed sensor in parallel with an RC filter element, adjusting the matching impedance characteristic of the low-voltage rotating speed signal connecting terminal in the connecting box, and executing step 7 if the fault is not eliminated;
and 7, replacing the magnetic steel in the low-voltage rotating speed sensor to enable the diameter of the induction end of the magnetic steel to be smaller than the maximum tooth width of the testing tone wheel, and finishing fault removal.
Preferably, in step 1, the cable is replaced first to eliminate the influence of the original signal cable, if the fault is not eliminated, the junction box is replaced to eliminate the fault of the junction box, the cable of the low-voltage rotation speed sensor is directly connected to the control system, and if the fault is not eliminated, step 2 is executed.
Preferably, in step 2, the clearance between the low-pressure rotating speed sensor and the induction gear is reduced from the maximum clearance to the minimum clearance, the clearance range is 0.5mm-0.3mm, the influence on the rotating speed fluctuation is detected, and if the fault is not eliminated, step 3 is executed.
Preferably, in step 3, an oscilloscope is used for detecting the input end of the low-voltage rotating speed signal conditioning board, and whether the waveform and the frequency of the low-voltage rotating speed signal are stable or not and whether no jump occurs or not is detected; and (4) testing the input end of the low-voltage rotating speed signal conditioning board by adopting a universal meter frequency gear, detecting whether the frequency of the low-voltage rotating speed signal is stable or not and whether jumping does not exist or not, and entering the step 4 if the fault is not eliminated.
Preferably, in the step 4, the distance between the low-voltage rotating speed sensor and the motor is adjusted to be larger than 10m, and the threshold voltage amplitude of the conditioning plate is increased to 300-500 mv.
Preferably, in step 4, the cable is replaced with a low noise cable.
Preferably, in step 5, the resistor of the RC filter element is connected in parallel with the capacitor, the resistor range is 1.5K-2.0K, and the capacitor range is 0.33 μ f-0.5 μ f.
Preferably, in step 6, the low-voltage rotating speed signal terminal in the KX1 junction box is connected with an RC filter element in parallel, the resistance range is 1.5K-2.0K, and the parallel capacitance range is 0.33 μ f-0.5 μ f.
Preferably, in step 7, the tooth width of the test tone wheel ranges from 5.94mm to 2.33 m.
Preferably, the induction end N pole of the cylindrical magnetic steel is in a circular truncated cone shape.
Compared with the prior art, the invention has the following beneficial technical effects:
the invention provides a troubleshooting method of low-pressure rotating speed signal fluctuation of a gas turbine, which eliminates the quality problem of hardware products by replacing cables and a junction box, adjusts the influence of a gap between a low-pressure rotating speed sensor and an induction gear on the rotating speed fluctuation, detects the waveform and the frequency, improves the size of a magnetic steel induction end in the low-pressure rotating speed sensor, optimizes the design of magnetic steel under the condition of not changing the original structure and performance of the product, ensures that the diameter of the magnetic steel induction end is smaller than the maximum tooth width of a test tone wheel, leads magnetic force lines to be more concentrated, is better matched with the test tone wheel, ensures that the magnetic steel can completely induce the alternate change of tooth tops and tooth bottoms when the gear rotates, and further avoids the fault of the low-pressure rotating speed fluctuation.
Drawings
FIG. 1 is a flowchart of a method for eliminating the low-pressure rotational speed signal fluctuation of a gas turbine according to an embodiment of the present invention.
FIG. 2 is a magnetic flux distribution diagram of magnetic steel according to an embodiment of the present invention;
FIG. 3 is a schematic view of a test tone wheel mounting for a combustion engine according to an embodiment of the present invention;
FIG. 4 is a schematic view of a chamfered magnetic steel structure according to an embodiment of the present invention.
In the drawings: 1 is a testing tone wheel; 2 is a first tooth; 3 is a coil; 4 is the second tooth; and 5 is magnetic steel.
Detailed Description
The present invention will now be described in further detail with reference to specific examples, which are intended to be illustrative, but not limiting, of the invention.
The invention relates to a method for eliminating engine speed signal interference, which comprises the following steps,
the method comprises the following steps: troubleshooting cable faults: the signal cable from the low-voltage rotating speed sensor to the junction box is replaced by a cable wire qualified in engine debugging, and the influence of the original signal cable is eliminated. And if the fault is not eliminated, the step two is carried out.
Step two: removing faults of the junction box: and the assembled junction box is replaced by a junction box qualified in engine debugging, and the fault of the original junction box is eliminated. And if the fault is not eliminated, the step three is carried out.
Step three: and (4) adjusting the influence of the maximum clearance to the minimum clearance on the fluctuation of the rotating speed by reducing the clearance between the low-pressure rotating speed sensor and the induction gear from the maximum clearance, and entering a step four if the fault is not eliminated.
Step four: detecting the input end of the low-voltage rotating speed signal conditioning board by using an oscilloscope, and detecting whether the waveform and the frequency of the low-voltage rotating speed signal are stable and have no jump or not; and (4) testing whether the input end of the low-voltage rotating speed signal conditioning board detects that the frequency of the low-voltage rotating speed signal is stable and has no jump by using a universal meter frequency gear, and entering a fifth step if the fault is not eliminated.
Step five: and (3) checking the distance between the induction sensor and the motor, ensuring that the distance between the low-voltage rotating speed sensor and the motor is more than 10m, improving the threshold voltage of the conditioning plate, replacing the cable with a low-noise cable, and entering a sixth step if the fault is not eliminated.
Step six: and (4) outputting matched impedance characteristics (parallel resistance and parallel capacitance) at the signal output of the low-voltage rotating speed sensor of the conditioning plate, and entering a seventh step if the fault is not eliminated.
Step seven: matching impedance characteristics (parallel resistance and parallel capacitance) of the low-voltage rotating speed signal wiring terminal in the wiring box, and entering step eight if the fault is not eliminated.
Step eight: and replacing the improved low-voltage rotating speed sensor structure, and removing the fault.
The structure of the low-pressure rotating speed sensor after the concrete improvement is as follows: when the test tone wheel 1 rotates, the tooth top and the tooth bottom of the test tone wheel 1 are alternately close to the magnetic steel 4, as shown in fig. 3, the maximum tooth width of the test tone wheel 1 is 5.94mm, and the minimum tooth width is 233 m. The diameter of the magnetic steel 4 induction end of the low-voltage rotating speed sensor is 8.2mm, which is larger than the maximum tooth width of the testing tone wheel 1 by 5.94m, and the low-voltage rotating speed sensor is not beneficial to the work of the magnetoelectric rotating speed sensor. The condition that the tooth top and the tooth root simultaneously cut magnetic lines of force exists in the rotation process of the test tone wheel 1, so that the magnetic steel 4 cannot completely sense the alternating change of the tooth top and the tooth root, and then some interference signals are generated.
From magnetoelectric tachometric transducer principle and design experience that tests the speed, magnet steel 4 response end diameter should be less than 1 tooth width of test tone wheel for suitable, when guaranteeing the gear rotation, magnet steel 4 can be complete to sense the alternation of addendum and dedendum.
Under the condition of not changing the original structure and performance of the product, the magnetic steel 4 is designed and optimized, the diameter of the induction end of the magnetic steel 4 is smaller than the maximum tooth width of the testing tone wheel 1, so that magnetic force lines are more concentrated and are better matched with the testing tone wheel 1. The magnetic steel 4 is optimized in design as follows, and the magnetic steel 4 after process optimization is shown in fig. 4.
Examples
The method comprises the following steps: troubleshooting a cable fault;
the signal cable from the low-voltage rotating speed sensor to the junction box is replaced by a cable wire qualified in engine debugging, and the influence of the original signal cable is eliminated. And if the fault is not eliminated, the step two is carried out.
Step two: removing the fault of the junction box;
and the assembled junction box is replaced by a junction box qualified in engine debugging, and the fault of the original junction box is eliminated. And (5) directly connecting the cable of the low-voltage rotating speed sensor to the control system, and if the low-voltage rotating speed fluctuation fault still exists, entering a step three.
Step three: and (4) adjusting the influence of the clearance between the sensor and the sensing gear (increasing to the maximum (0.50mm) and reducing to the minimum (0.30mm)) on the fluctuation of the rotating speed, and if the fault is not eliminated, entering the step four.
Step four: detecting the input end of the low-voltage rotating speed signal conditioning board by using an oscilloscope, and detecting whether the waveform and the frequency of the low-voltage rotating speed signal are stable and have no jump or not; and (4) testing whether the input end of the low-voltage rotating speed signal conditioning board detects that the frequency of the low-voltage rotating speed signal is stable and has no jump by using a universal meter frequency gear, and entering a fifth step if the fault is not eliminated.
Known by the product theory of operation, when test tone wheel 1 rotated, tooth top and tooth root on the test tone wheel 1 were close to magnet steel 4 in turn, constantly cut the magnetic line of force on the 4 surfaces of magnet steel, and the 4 outside magnetic lines of force of cylindrical magnet steel distribution schematic diagrams are seen in figure 2 to output periodic induced electromotive force.
Magnetic lines of force of magnet steel 4 are outside to get back to the S utmost point of magnet steel 4 from the N utmost point, and the first tooth 2 of test tone wheel 1 and second tooth 5 go to cut the magnetic lines of force that 4 terminal surfaces of magnet steel edge converged simultaneously to can cause interference signal, under the unchangeable condition of magnetic lines of force convergence quantity, coil 3 twines in the outside of magnet steel 4, and magnet steel 4 terminal surface magnetic induction is stronger, and the voltage amplitude of the interference signal who produces is just bigger.
Step five: the low-voltage rotating speed sensor is arranged near the motor through on-site understanding, a product transmission cable is improved into a low-noise cable, 2 variable-frequency motors are adopted for starting, and the threshold voltage amplitude (70-80) mv of a conditioning plate is adjusted. The interference signal generated by the output signal of the low-voltage rotating speed sensor and the interference signal in the transmission process are analyzed and not effectively filtered, and the amplitude of the interference signal is superposed to occasionally exceed the threshold voltage amplitude of the conditioning plate, so that the low-voltage rotating speed sensor is caused to control the vehicle platform to display rotating speed jump in the cold blowing and idling processes.
And (2) checking the distance between the low-voltage rotating speed sensor and the motor, ensuring that the distance between the low-voltage rotating speed sensor and the motor is more than 10m, improving the threshold voltage amplitude (300-500) mv of the conditioning plate, replacing the cable with a low-noise cable, and entering a sixth step if the fault is not eliminated.
Step six: matching impedance characteristics are output on the conditioning board low-voltage rotating speed sensor signals, the terminals are switched over and RC filter elements (resistors and capacitors are connected in parallel), the range of the resistors is 1.5K-2.0K, the range of the capacitors is 0.33 muf-0.5 muf, signals controlling the low-voltage rotating speed sensor on one conditioning board are specifically connected in parallel, and if faults are not eliminated, the step seven is carried out.
Step seven: and outputting a matched impedance characteristic by a low-voltage rotating speed signal in a KX1 junction box, switching a terminal and an RC (resistance-parallel capacitance) filter element, wherein the resistance range is 1.5K-2.0K, the capacitance range is 0.33 muf-0.5 muf, and specifically, connecting a connecting terminal at the signal position of a low-voltage rotating speed sensor in parallel if the fault is not eliminated, and entering the step eight.
And (4) matching impedance characteristics (a resistor with 1.5K is connected in parallel and a capacitor with 0.33 muf is connected in parallel) of low-voltage rotating speed signal terminals (62, 63) (65, 66) in the KX1 junction box, and if the fault is not eliminated, entering the step eight.
Step eight: and replacing the improved low-voltage rotating speed sensor structure, and removing the fault.
The improved low-voltage rotation speed sensor structure: when the test tone wheel 1 rotates, the tooth top and the tooth bottom of the test tone wheel 1 are alternatively close to the magnetic steel 4, as shown in fig. 3; the maximum tooth width of the testing tone wheel 1 is 5.94mm, and the minimum tooth width is 2.33 m; the diameter of the magnetic steel 4 induction end of the low-voltage rotating speed sensor is 8.2mm, which is larger than the maximum tooth width of the testing tone wheel 1 by 5.94mm, and the low-voltage rotating speed sensor is not beneficial to the work of the magnetoelectric rotating speed sensor. The condition that the tooth top and the tooth root simultaneously cut magnetic lines of force exists in the rotation process of the test tone wheel 1, so that the magnetic steel 4 cannot completely sense the alternating change of the tooth top and the tooth root, and then some interference signals are generated.
From magnetoelectric tachometric transducer principle and design experience that tests the speed, magnet steel 4 response end diameter should be less than 1 tooth width of test tone wheel for suitable, when guaranteeing the gear rotation, magnet steel 4 can be complete to sense the alternation of addendum and dedendum. Under the condition of not changing the original structure and performance of the product, the magnetic steel 4 is designed and optimized, the diameter of the induction end of the magnetic steel 4 is smaller than the maximum tooth width of the testing tone wheel 1, so that magnetic force lines are more concentrated and are better matched with the testing tone wheel 1. The magnetic steel 4 is optimized in design as follows, and the magnetic steel 4 after process optimization is shown in fig. 4. Through tests, the magnetic force lines of the magnetic steel 4 subjected to process optimization are more concentrated on the central part of the magnetic steel 4, and a specific data chart 1 shows.
TABLE 1 magnetic steel 4 parameter comparison table
In order to verify the scheme, the product is installed and a dynamic vortex thermal state 8-hour examination test is carried out along with the combustion engine, and the control vehicle platform displays stable rotating speed.
Claims (7)
1. A method for eliminating the low-pressure rotation speed signal fluctuation of a gas turbine is characterized by comprising the following steps,
step 1, replacing a cable, eliminating the influence of an original signal cable, replacing a junction box to eliminate the fault of the junction box if the fault is not eliminated, directly connecting the cable of the low-voltage rotating speed sensor to a control system, and executing step 2 if the fault is not eliminated;
step 2, reducing the clearance between the low-pressure rotating speed sensor and the induction gear from the maximum clearance to the minimum clearance, wherein the clearance range is 0.5mm-0.3mm, detecting the influence on the rotating speed fluctuation, and if the fault is not eliminated, executing the step 3;
step 3, detecting the input end of the low-voltage rotating speed signal conditioning board by using an oscilloscope, and detecting whether the waveform and the frequency of the low-voltage rotating speed signal are stable or not and whether no jump occurs or not; testing the input end of the low-voltage rotating speed signal conditioning board by adopting a universal meter frequency gear, detecting whether the frequency of the low-voltage rotating speed signal is stable and has no jump, and if the fault is not eliminated, entering the step 4;
step 4, checking and adjusting the distance between the low-voltage rotating speed sensor and the motor, improving the threshold voltage of the conditioning plate, replacing the cable again, and executing step 5 if the fault is not eliminated;
step 5, connecting an RC filter element on a port of the conditioning board for controlling the low-voltage rotating speed sensor in parallel, adjusting the signal output matching impedance characteristic of the conditioning board low-voltage rotating speed sensor, and executing step 6 if the fault is not eliminated;
step 6, connecting a connecting terminal at the signal position of the low-voltage rotating speed sensor in parallel with an RC filter element, adjusting the matching impedance characteristic of the low-voltage rotating speed signal connecting terminal in the connecting box, and executing step 7 if the fault is not eliminated;
and 7, replacing the magnetic steel in the low-voltage rotating speed sensor to enable the diameter of the induction end of the magnetic steel to be smaller than the maximum tooth width of the testing tone wheel, and finishing fault removal.
2. The method as claimed in claim 1, wherein in step 4, the distance between the low-pressure speed sensor and the motor is adjusted to be greater than 10m, and the threshold voltage amplitude of the conditioning plate is increased to 300-500 mv.
3. The method for eliminating the low pressure rotational speed signal fluctuation of the gas turbine as claimed in claim 1, wherein in the step 4, the cable is replaced with a low noise cable.
4. The method as claimed in claim 1, wherein in step 5, the RC filter element is connected in parallel with a capacitor, the resistor is in the range of 1.5K to 2.0K, and the capacitor is in the range of 0.33 μ f to 0.5 μ f.
5. The method for eliminating the low-pressure rotating speed signal fluctuation of the gas turbine as claimed in claim 1, wherein in the step 6, the low-pressure rotating speed signal terminal is connected with the RC filter element in parallel in the KX1 junction box, the resistance range is 1.5K-2.0K, and the parallel capacitance range is 0.33 muf-0.5 muf.
6. The method as claimed in claim 1, wherein in step 7, the tooth width of the test tone wheel is in the range of 5.94mm-2.33 m.
7. The method of claim 1, wherein the magnetic steel has a cylindrical structure, and the N pole of the sensing end of the magnetic steel is truncated cone-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110744749.7A CN113309618B (en) | 2021-06-30 | 2021-06-30 | Troubleshooting method for low-pressure rotating speed signal fluctuation of gas turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110744749.7A CN113309618B (en) | 2021-06-30 | 2021-06-30 | Troubleshooting method for low-pressure rotating speed signal fluctuation of gas turbine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113309618A CN113309618A (en) | 2021-08-27 |
| CN113309618B true CN113309618B (en) | 2022-08-02 |
Family
ID=77381381
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110744749.7A Active CN113309618B (en) | 2021-06-30 | 2021-06-30 | Troubleshooting method for low-pressure rotating speed signal fluctuation of gas turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113309618B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5729127A (en) * | 1994-09-13 | 1998-03-17 | Nippondenso Co., Ltd. | Magnetism detecting apparatus having gear teeth dimensions for minimal pulse signal distortion |
| JP2011066960A (en) * | 2009-09-15 | 2011-03-31 | Toshiba Corp | Rotor position detecting device |
| CN102645548A (en) * | 2012-05-12 | 2012-08-22 | 中国兵器工业集团第七0研究所 | Magnetoelectricity revolution speed transducer |
| CN112379119A (en) * | 2020-12-07 | 2021-02-19 | 中国航发沈阳发动机研究所 | High-robustness magnetoelectric rotation speed sensor demodulation device and method |
| CN112746875A (en) * | 2019-10-31 | 2021-05-04 | 中国航发商用航空发动机有限责任公司 | Active control system and method for complex vibration of rotor shaft system of aircraft engine |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6798192B2 (en) * | 2002-06-11 | 2004-09-28 | Honeywell International, Inc. | Speed sensing system with automatic sensitivity adjustment |
| JP2004219383A (en) * | 2003-01-17 | 2004-08-05 | Central Japan Railway Co | Wheel speed detection system |
| CN102854333A (en) * | 2012-09-18 | 2013-01-02 | 哈尔滨工程大学 | Hot-redundant magnetic-electric rotational-speed sensor |
| DE102012222202A1 (en) * | 2012-12-04 | 2014-06-05 | Robert Bosch Gmbh | Method for monitoring a rotation of a compressor wheel |
| JP2018054510A (en) * | 2016-09-29 | 2018-04-05 | トヨタ自動車株式会社 | Angular velocity measurement device and relative angular velocity measurement device |
| CN106771322B (en) * | 2016-11-22 | 2020-08-04 | 中国航发沈阳黎明航空发动机有限责任公司 | Method for processing signal distortion of magnetoelectric revolution speed transducer |
| US10571301B2 (en) * | 2017-07-20 | 2020-02-25 | Allegro Microsystems, Llc | Frequency of an output signal of a magnetic field sensor to detect speed and direction of angular rotation of a rotating magnetic structure or a fault |
| US10634519B2 (en) * | 2017-09-07 | 2020-04-28 | Infineon Technologies Ag | Magnetic sensor for system-level diagnostics |
| GB201904123D0 (en) * | 2019-03-26 | 2019-05-08 | Rolls Royce Plc | Methods of monitoring vibration and trim balance using speed probes |
| CN110161851B (en) * | 2019-05-07 | 2021-08-06 | 南京航空航天大学 | Design method of fault-tolerant controller for actuating mechanism of aviation electric fuel pump |
-
2021
- 2021-06-30 CN CN202110744749.7A patent/CN113309618B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5729127A (en) * | 1994-09-13 | 1998-03-17 | Nippondenso Co., Ltd. | Magnetism detecting apparatus having gear teeth dimensions for minimal pulse signal distortion |
| JP2011066960A (en) * | 2009-09-15 | 2011-03-31 | Toshiba Corp | Rotor position detecting device |
| CN102645548A (en) * | 2012-05-12 | 2012-08-22 | 中国兵器工业集团第七0研究所 | Magnetoelectricity revolution speed transducer |
| CN112746875A (en) * | 2019-10-31 | 2021-05-04 | 中国航发商用航空发动机有限责任公司 | Active control system and method for complex vibration of rotor shaft system of aircraft engine |
| CN112379119A (en) * | 2020-12-07 | 2021-02-19 | 中国航发沈阳发动机研究所 | High-robustness magnetoelectric rotation speed sensor demodulation device and method |
Non-Patent Citations (2)
| Title |
|---|
| 某型航空发动机转速信号故障分析;贾淑芝等;《航空发动机》;20080615(第02期);46-47+50 * |
| 航空用磁电式转速传感器测速系统匹配技术研究;郑超超;《科技创新与应用》;20180328(第09期);53-55 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113309618A (en) | 2021-08-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102721465B (en) | System and method for diagnosing and preliminarily positioning loosening faults of iron core of power transformer | |
| Popa et al. | Condition monitoring of wind generators | |
| CN101387257B (en) | Knock sensor diagnostic system and method | |
| CN103713235B (en) | Rotor of steam turbo generator interturn short-circuit failure diagnosing method based on end distortion effect | |
| JP2000045786A (en) | Rotation speed detecting device for turbo-supercharger | |
| CN207096309U (en) | A kind of steam turbine generator shaft current and shaft voltage on-Line Monitor Device | |
| CN113391235B (en) | System and method for detecting dynamic turn-to-turn short circuit fault of synchronous generator rotor | |
| CN113309618B (en) | Troubleshooting method for low-pressure rotating speed signal fluctuation of gas turbine | |
| CN202734953U (en) | Power transformer iron core loosening fault diagnosis apparatus | |
| CN112881910A (en) | Dynamic eccentric fault detection method for rotating permanent magnet synchronous motor | |
| CN109324217A (en) | A kind of steam turbine generator shaft current and shaft voltage on-Line Monitor Device | |
| CN111413641A (en) | Microcomputer relay protection method using HHT transient characteristic quantity detection | |
| CN102854333A (en) | Hot-redundant magnetic-electric rotational-speed sensor | |
| CN113390643B (en) | Method and device for measuring rotating speed of aircraft engine | |
| CN108106827B (en) | Method for identifying loosening of amplifier terminal under rotor platform rotation speed state | |
| Al-Ahmar et al. | DFIG-based wind turbine fault diagnosis using a specific discrete wavelet transform | |
| CN110161395B (en) | Method and system for monitoring insulation state of inverter driving motor on line | |
| Jin et al. | Envelope analysis on vibration signals for stator winding fault early detection in 3-phase induction motors | |
| Kumar et al. | EWT Implementation for Examining Demagnetization Fault in PMSM using FEM | |
| CN113359030A (en) | Wind driven generator short circuit fault simulation platform based on external magnetic flux leakage detection | |
| CN204705490U (en) | A kind of smoking car fault test set | |
| CN104849070A (en) | Smoke vehicle fault detection equipment and smoke vehicle fault detection method | |
| CN112098891A (en) | Repetitive pulse parameter optimization method and device for generator rotor turn-to-turn short circuit diagnosis | |
| De Pinho et al. | Tool for power quality assessment of motor fed by variable speed electric drivers | |
| CN219142881U (en) | Rotational speed signal processing system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |