CN117516901A - Clock synchronization method and system for fan blade monitoring based on inertial navigation technology - Google Patents
Clock synchronization method and system for fan blade monitoring based on inertial navigation technology Download PDFInfo
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
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- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
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- G01C21/12—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning
- G01C21/16—Navigation; Navigational instruments not provided for in groups G01C1/00 - G01C19/00 by using measurements of speed or acceleration executed aboard the object being navigated; Dead reckoning by integrating acceleration or speed, i.e. inertial navigation
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Abstract
The embodiment of the application provides a clock synchronization method and a clock synchronization system for fan blade monitoring based on inertial navigation technology, wherein the method comprises the following steps: acquiring frequency information of a master clock signal and phase information of the master clock signal; acquiring local clock signal frequency information and local clock signal phase information; comparing the frequency information of the main clock signal with the frequency information of the local clock signal to obtain a frequency drift amount; generating first correction information according to the frequency drift amount, and adjusting the frequency of the local clock signal to be the same as that of the main clock signal according to the first correction information; comparing the phase information of the master clock signal with the phase information of the local clock signal, generating second correction information according to the phase drift amount, and adjusting the phase of the local clock signal to be the same as the phase of the master clock signal according to the second correction information; the frequency and the phase are compared with the frequency and the phase of the local clock signal, and the frequency and the phase are adjusted, so that the frequency and the phase are kept the same, and the real-time synchronization of the clocks is realized.
Description
Technical Field
The application relates to the field of fan monitoring, in particular to a clock synchronization method and a clock synchronization system for fan blade monitoring based on inertial navigation technology.
Background
In the fan blade monitoring process, monitoring data can be generated, the monitoring data needs to be transmitted to a terminal in real time, in order to ensure the real-time performance and the accuracy of the monitoring data transmission, the clock signals of fan blade monitoring points and the main clock signals of the terminal need to be kept synchronous, the existing clock synchronization methods are all single and synchronous to the frequencies of the clock signals, the phases of the clock signals are not synchronized while the frequencies are synchronized, the complete synchronization of the clock signals cannot be ensured, the delay in the monitoring data transmission process is caused, the monitoring data has larger deviation, and aiming at the problems, the technical scheme to be effective is urgently needed at present.
Disclosure of Invention
The embodiment of the application aims to provide a clock synchronization method and a clock synchronization system for fan blade monitoring based on an inertial navigation technology, which are used for comparing a frequency and a phase of a main clock signal with a local clock signal, adjusting the frequency and the phase, keeping the frequency and the phase the same and realizing clock real-time synchronization.
The embodiment of the application also provides a clock synchronization method for fan blade monitoring based on inertial navigation technology, which comprises the following steps:
acquiring a master clock signal, and modulating and decomposing the master clock signal to obtain frequency information of the master clock signal and phase information of the master clock signal;
acquiring a fan blade monitoring signal to obtain a local clock signal, and modulating and decomposing the local clock signal to obtain frequency information and phase information of the local clock signal;
comparing the frequency information of the main clock signal with the frequency information of the local clock signal to obtain a frequency drift amount;
generating first correction information according to the frequency drift amount, and adjusting the frequency of the local clock signal to be the same as that of the main clock signal according to the first correction information;
comparing the phase information of the master clock signal with the phase information of the local clock signal to obtain a phase drift amount;
and generating second correction information according to the phase drift amount, and adjusting the phase of the local clock signal to be the same as the phase of the master clock signal according to the second correction information.
Optionally, in the clock synchronization method for fan blade monitoring based on inertial navigation technology according to the embodiment of the present application, a master clock signal is obtained, and the master clock signal is modulated and decomposed to obtain master signal frequency information and master signal phase information, which specifically includes:
Acquiring a master clock signal, and modulating the master clock signal to obtain a modulation signal;
comparing the modulation signal with a preset modulation signal to obtain a modulation deviation;
adjusting modulation parameters according to the modulation deviation, and obtaining an optimized modulation signal;
vector decomposition is carried out on the optimized modulation signal, and an amplitude vector and a phase vector are obtained;
generating a relation curve of the amplitude and the phase according to the amplitude vector and the phase vector;
and generating frequency information of the master clock signal and phase information of the master clock signal according to the relation curve.
Optionally, in the clock synchronization method for fan blade monitoring based on inertial navigation technology according to the embodiment of the present application, a fan blade monitoring signal is obtained to obtain a local clock signal, and the local clock signal is modulated and decomposed to obtain frequency information of the local clock signal and phase information of the local clock signal, which specifically includes:
acquiring fan blade monitoring signals of different monitoring points, and generating fan blade monitoring signal waveform diagrams of the different monitoring points;
analyzing waveform diagrams of fan blade monitoring signals of different monitoring points, and calculating Euclidean distances between waveforms of the different monitoring points;
generating waveform gain coefficients of different monitoring points according to the Euclidean distance, and carrying out amplitude and phase shift on the waveform gain coefficients and corresponding waveforms;
And adjusting the waveforms of different monitoring points according to the waveform gain coefficients to enable the waveforms of the different monitoring points to coincide.
Optionally, in the clock synchronization method for fan blade monitoring based on inertial navigation technology according to the embodiment of the present application, waveform gain coefficients of different monitoring points are generated according to the euclidean distance, and amplitude and phase translation is performed on the waveform gain coefficients and corresponding waveforms, including:
acquiring signal waveforms of two different monitoring points, and performing Euclidean distance calculation on the two signal waveforms;
comparing the Euclidean distance with a preset distance value to obtain a distance deviation rate;
judging whether the distance deviation rate is larger than a preset distance deviation rate threshold value or not;
if the signal waveform of the first monitoring point is larger than the signal waveform of the second monitoring point, generating a first waveform gain coefficient according to the signal waveform of one of the monitoring points, generating a second waveform gain coefficient according to the signal waveform of the other monitoring point, and bidirectionally adjusting the signal waveforms of the two monitoring points according to the first waveform gain coefficient and the second waveform gain coefficient;
if the signal waveform of one monitoring point is smaller than the signal waveform of the other monitoring point, generating a waveform approaching coefficient, and approaching the signal waveform of one monitoring point to the signal waveform of the other monitoring point according to the waveform approaching coefficient.
Optionally, in the clock synchronization method for fan blade monitoring based on inertial navigation technology according to the embodiment of the present application, comparing phase information of a master clock signal with phase information of a local clock signal to obtain a phase drift amount, including:
Acquiring a master clock signal waveform, and performing smoothing on the master clock signal waveform to obtain an optimized master clock signal waveform;
calculating a master clock signal zero point according to the optimized master clock signal waveform, and calculating the difference value between two adjacent master clock signal zero points to obtain the phase of the master clock signal;
acquiring a local clock signal waveform, and performing smoothing treatment on the local clock signal waveform to obtain an optimized local clock signal waveform;
calculating a local clock signal zero point according to the optimized local clock signal waveform, and calculating the difference value between two adjacent local clock signal zero points to obtain the phase of the local clock signal;
and calculating the difference value between the phase of the main clock signal and the phase of the local clock signal to obtain the phase drift amount.
Optionally, in the clock synchronization method for fan blade monitoring based on inertial navigation technology according to the embodiment of the present application, a master clock signal waveform is obtained, and the master clock signal waveform is smoothed to obtain an optimized master clock signal waveform, which specifically includes:
acquiring a main clock signal waveform, extracting waveform characteristics, and comparing the waveform characteristics with preset characteristics to obtain a characteristic deviation rate;
If the characteristic deviation rate is larger than the first characteristic deviation rate threshold and smaller than the second characteristic deviation rate threshold, generating feedback information, and correcting the waveform of the main clock signal according to the feedback information;
if the characteristic deviation rate is larger than the second characteristic deviation rate threshold value, eliminating the corresponding waveform characteristic;
the first characteristic deviation rate threshold is less than the second characteristic deviation rate threshold.
In a second aspect, embodiments of the present application provide a clock synchronization system for inertial navigation technology-based fan blade monitoring, the system comprising: a memory and a processor, wherein the memory comprises a program for a clock synchronization method for fan blade monitoring based on inertial navigation technology, and the program for the clock synchronization method for fan blade monitoring based on inertial navigation technology realizes the following steps when being executed by the processor:
acquiring a master clock signal, and modulating and decomposing the master clock signal to obtain frequency information of the master clock signal and phase information of the master clock signal;
acquiring a fan blade monitoring signal to obtain a local clock signal, and modulating and decomposing the local clock signal to obtain frequency information and phase information of the local clock signal;
Comparing the frequency information of the main clock signal with the frequency information of the local clock signal to obtain a frequency drift amount;
generating first correction information according to the frequency drift amount, and adjusting the frequency of the local clock signal to be the same as that of the main clock signal according to the first correction information;
comparing the phase information of the master clock signal with the phase information of the local clock signal to obtain a phase drift amount;
and generating second correction information according to the phase drift amount, and adjusting the phase of the local clock signal to be the same as the phase of the master clock signal according to the second correction information.
Optionally, in the clock synchronization system for fan blade monitoring based on inertial navigation technology according to the embodiment of the present application, a master clock signal is obtained, and the master clock signal is modulated and decomposed to obtain master signal frequency information and master signal phase information, which specifically includes:
acquiring a master clock signal, and modulating the master clock signal to obtain a modulation signal;
comparing the modulation signal with a preset modulation signal to obtain a modulation deviation;
adjusting modulation parameters according to the modulation deviation, and obtaining an optimized modulation signal;
vector decomposition is carried out on the optimized modulation signal, and an amplitude vector and a phase vector are obtained;
Generating a relation curve of the amplitude and the phase according to the amplitude vector and the phase vector;
and generating frequency information of the master clock signal and phase information of the master clock signal according to the relation curve.
Optionally, in the clock synchronization system for fan blade monitoring based on inertial navigation technology according to the embodiment of the present application, a fan blade monitoring signal is obtained to obtain a local clock signal, and the local clock signal is modulated and decomposed to obtain frequency information of the local clock signal and phase information of the local clock signal, which specifically includes:
acquiring fan blade monitoring signals of different monitoring points, and generating fan blade monitoring signal waveform diagrams of the different monitoring points;
analyzing waveform diagrams of fan blade monitoring signals of different monitoring points, and calculating Euclidean distances between waveforms of the different monitoring points;
generating waveform gain coefficients of different monitoring points according to the Euclidean distance, and carrying out amplitude and phase shift on the waveform gain coefficients and corresponding waveforms;
and adjusting the waveforms of different monitoring points according to the waveform gain coefficients to enable the waveforms of the different monitoring points to coincide.
Optionally, in the clock synchronization system for fan blade monitoring based on inertial navigation technology according to the embodiment of the present application, waveform gain coefficients of different monitoring points are generated according to euclidean distances, and amplitude and phase translation is performed on the waveform gain coefficients and corresponding waveforms, including:
Acquiring signal waveforms of two different monitoring points, and performing Euclidean distance calculation on the two signal waveforms;
comparing the Euclidean distance with a preset distance value to obtain a distance deviation rate;
judging whether the distance deviation rate is larger than a preset distance deviation rate threshold value or not;
if the signal waveform of the first monitoring point is larger than the signal waveform of the second monitoring point, generating a first waveform gain coefficient according to the signal waveform of one of the monitoring points, generating a second waveform gain coefficient according to the signal waveform of the other monitoring point, and bidirectionally adjusting the signal waveforms of the two monitoring points according to the first waveform gain coefficient and the second waveform gain coefficient;
if the signal waveform of one monitoring point is smaller than the signal waveform of the other monitoring point, generating a waveform approaching coefficient, and approaching the signal waveform of one monitoring point to the signal waveform of the other monitoring point according to the waveform approaching coefficient.
In a third aspect, an embodiment of the present application further provides a computer readable storage medium, where a clock synchronization method program for fan blade monitoring based on inertial navigation technology is included in the computer readable storage medium, where the clock synchronization method program for fan blade monitoring based on inertial navigation technology is executed by a processor, and the steps of the clock synchronization method for fan blade monitoring based on inertial navigation technology are implemented as described in any one of the foregoing.
As can be seen from the above, according to the clock synchronization method and system for fan blade monitoring based on inertial navigation technology provided in the embodiments of the present application, a master clock signal is obtained, and is modulated and decomposed to obtain frequency information of the master clock signal and phase information of the master clock signal; acquiring a fan blade monitoring signal to obtain a local clock signal, and modulating and decomposing the local clock signal to obtain frequency information and phase information of the local clock signal; comparing the frequency information of the main clock signal with the frequency information of the local clock signal to obtain a frequency drift amount; generating first correction information according to the frequency drift amount, and adjusting the frequency of the local clock signal to be the same as that of the main clock signal according to the first correction information; comparing the phase information of the master clock signal with the phase information of the local clock signal to obtain a phase drift amount; generating second correction information according to the phase drift amount, and adjusting the phase of the local clock signal to be the same as the phase of the master clock signal according to the second correction information; the frequency and the phase are compared with the frequency and the phase of the local clock signal, and the frequency and the phase are adjusted, so that the frequency and the phase are kept the same, and the real-time synchronization of the clocks is realized.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of a clock synchronization method for inertial navigation technology based fan blade monitoring provided in an embodiment of the present application;
fig. 2 is a flowchart of obtaining frequency information of a main signal and phase information of the main signal of a clock synchronization method for fan blade monitoring based on inertial navigation technology according to an embodiment of the present application;
fig. 3 is a waveform adjustment flowchart of different monitoring points of a clock synchronization method for fan blade monitoring based on inertial navigation technology according to an embodiment of the present application.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, are intended to be within the scope of the present application.
It should be noted that like reference numerals and letters refer to like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures. Meanwhile, in the description of the present application, the terms "first", "second", and the like are used only to distinguish the description, and are not to be construed as indicating or implying relative importance.
Referring to fig. 1, fig. 1 is a flowchart of a clock synchronization method for fan blade monitoring based on inertial navigation technology in some embodiments of the present application. The clock synchronization method for fan blade monitoring based on the inertial navigation technology is used in terminal equipment and comprises the following steps:
s101, obtaining a master clock signal, and modulating and decomposing the master clock signal to obtain frequency information of the master clock signal and phase information of the master clock signal;
s102, acquiring fan blade monitoring signals to obtain local clock signals, and modulating and decomposing the local clock signals to obtain frequency information and phase information of the local clock signals;
s103, comparing the frequency information of the main clock signal with the frequency information of the local clock signal to obtain frequency drift amount;
S104, generating first correction information according to the frequency drift amount, and adjusting the frequency of the local clock signal to be the same as that of the master clock signal according to the first correction information;
s105, comparing the phase information of the main clock signal with the phase information of the local clock signal to obtain a phase drift amount;
s106, generating second correction information according to the phase drift amount, and adjusting the phase of the local clock signal to be the same as the phase of the master clock signal according to the second correction information.
It should be noted that, comparing the local clock signal with the master clock signal, judging the deviation of the two clock signals, adjusting the frequency and the phase, so as to keep the two synchronous in real time, realize the clock synchronization of the fan blade and the far end, and improve the accuracy of the fan blade monitoring data.
Referring to fig. 2, fig. 2 is a flowchart of obtaining primary signal frequency information and primary signal phase information of a clock synchronization method for fan blade monitoring based on inertial navigation technology according to some embodiments of the present application. According to the embodiment of the invention, a master clock signal is acquired, and is modulated and decomposed to obtain master signal frequency information and master signal phase information, specifically:
s201, obtaining a master clock signal, modulating the master clock signal to obtain a modulation signal, and comparing the modulation signal with a preset modulation signal to obtain a modulation deviation;
S202, adjusting modulation parameters according to the modulation deviation, and obtaining an optimized modulation signal;
s203, vector decomposition is carried out on the optimized modulation signals to obtain amplitude vectors and phase vectors;
s204, generating a relation curve of the amplitude and the phase according to the amplitude vector and the phase vector;
s205, generating frequency information of the master clock signal and phase information of the master clock signal according to the relation curve.
It should be noted that, the main clock signal is modulated, so that a larger deviation range does not appear in the frequency of the signal, and the amplitude and the phase of the modulated signal are ensured to be in an analyzable range, thereby improving the analysis effect.
Referring to fig. 3, fig. 3 is a waveform adjustment flowchart of different monitoring points of a clock synchronization method for fan blade monitoring based on inertial navigation technology according to some embodiments of the present application. According to the embodiment of the invention, a fan blade monitoring signal is obtained to obtain a local clock signal, and the local clock signal is modulated and decomposed to obtain frequency information of the local clock signal and phase information of the local clock signal, which comprises the following steps:
s301, fan blade monitoring signals of different monitoring points are obtained, and fan blade monitoring signal waveform diagrams of the different monitoring points are generated;
S302, analyzing waveform diagrams of fan blade monitoring signals of different monitoring points, and calculating Euclidean distances between waveforms of the different monitoring points;
s303, generating waveform gain coefficients of different monitoring points according to the Euclidean distance, and carrying out amplitude and phase shift on the waveform gain coefficients and corresponding waveforms;
s304, adjusting waveforms of different monitoring points according to the waveform gain coefficients to enable the waveforms of the different monitoring points to coincide.
It should be noted that, by analyzing the signal waveforms of different monitoring points, waveform adjustment is performed to make the signal waveforms of different monitoring points coincide, that is, the frequency and the phase of the signal waveforms of different monitoring points are the same, so that when the clock signal of the monitoring point and the master clock signal are analyzed, errors are reduced.
According to the embodiment of the invention, the waveform gain coefficients of different monitoring points are generated according to the Euclidean distance, and the waveform gain coefficients and the corresponding waveforms are subjected to amplitude and phase shift, which comprises the following steps:
acquiring signal waveforms of two different monitoring points, and performing Euclidean distance calculation on the two signal waveforms;
comparing the Euclidean distance with a preset distance value to obtain a distance deviation rate;
judging whether the distance deviation rate is larger than a preset distance deviation rate threshold value or not;
If the signal waveform of the first monitoring point is larger than the signal waveform of the second monitoring point, generating a first waveform gain coefficient according to the signal waveform of one of the monitoring points, generating a second waveform gain coefficient according to the signal waveform of the other monitoring point, and bidirectionally adjusting the signal waveforms of the two monitoring points according to the first waveform gain coefficient and the second waveform gain coefficient;
if the signal waveform of one monitoring point is smaller than the signal waveform of the other monitoring point, generating a waveform approaching coefficient, and approaching the signal waveform of one monitoring point to the signal waveform of the other monitoring point according to the waveform approaching coefficient.
It should be noted that, the Euclidean distance judgment is performed by judging the signal waveforms of the two monitoring points, when the signal waveforms of the two monitoring points have larger deviation, the signal waveforms of the two monitoring points are simultaneously subjected to bidirectional adjustment, so that the processing error in the adjustment process is reduced, and the processing precision is improved.
According to the embodiment of the invention, the phase drift amount is obtained by comparing the phase information of the main clock signal with the phase information of the local clock signal, and the method specifically comprises the following steps:
acquiring a master clock signal waveform, and performing smoothing on the master clock signal waveform to obtain an optimized master clock signal waveform;
calculating a master clock signal zero point according to the optimized master clock signal waveform, and calculating the difference value between two adjacent master clock signal zero points to obtain the phase of the master clock signal;
Acquiring a local clock signal waveform, and performing smoothing treatment on the local clock signal waveform to obtain an optimized local clock signal waveform;
calculating a local clock signal zero point according to the optimized local clock signal waveform, and calculating the difference value between two adjacent local clock signal zero points to obtain the phase of the local clock signal;
and calculating the difference value between the phase of the main clock signal and the phase of the local clock signal to obtain the phase drift amount.
The signal zero point is calculated by analyzing waveforms of the master clock signal and the local clock signal, the master clock signal and the local clock signal are sinusoidal signals and have a plurality of signal zero points, a phase value is obtained by calculating a difference value between adjacent signal zero points, and phase adjustment is performed according to phase deviation of the master clock signal and the local clock signal, so that the phase of the master clock signal is overlapped with the phase of the local clock signal, thereby realizing clock synchronization.
According to the embodiment of the invention, a master clock signal waveform is obtained, and is subjected to smoothing processing to obtain an optimized master clock signal waveform, which specifically comprises the following steps:
acquiring a main clock signal waveform, extracting waveform characteristics, and comparing the waveform characteristics with preset characteristics to obtain a characteristic deviation rate;
If the characteristic deviation rate is larger than the first characteristic deviation rate threshold and smaller than the second characteristic deviation rate threshold, generating feedback information, and correcting the waveform of the main clock signal according to the feedback information;
if the characteristic deviation rate is larger than the second characteristic deviation rate threshold value, eliminating the corresponding waveform characteristic;
the first characteristic deviation rate threshold is less than the second characteristic deviation rate threshold.
The method is characterized in that the waveform characteristics are extracted, the waveform of the main clock signal is analyzed, the characteristic deviation of the waveform of the main clock signal is judged, the waveform characteristics are processed, and the response accuracy of the waveform characteristics of the main clock signal is improved.
According to an embodiment of the present invention, further comprising: each independent monitoring point corresponds to a local clock, and count values are obtained by analyzing zero crossing points of periodic output signals of the monitoring points and counting the zero crossing points;
when the count value reaches a preset value, the interrupt response generates a clock signal, the counter is refilled with an initial value, and a new round of counting is started.
According to an embodiment of the present invention, further comprising: after the master clock and the slave clock acquire time stamp information according to an IEEE1588 protocol synchronization process, calculating time deviation and delay value, and adjusting the time of the local clock to be consistent with the time of the master clock through a local clock algorithm; the local clock algorithm comprises step adjustment, temporary rate adjustment and PI control, and the application of the algorithm determines the speed, precision and stability of clock synchronization.
In a second aspect, embodiments of the present application provide a clock synchronization system for inertial navigation technology-based fan blade monitoring, the system comprising: the device comprises a memory and a processor, wherein the memory comprises a program for a clock synchronization method for fan blade monitoring based on the inertial navigation technology, and the program for the clock synchronization method for fan blade monitoring based on the inertial navigation technology realizes the following steps when being executed by the processor:
acquiring a master clock signal, and modulating and decomposing the master clock signal to obtain frequency information of the master clock signal and phase information of the master clock signal;
acquiring a fan blade monitoring signal to obtain a local clock signal, and modulating and decomposing the local clock signal to obtain frequency information and phase information of the local clock signal;
comparing the frequency information of the main clock signal with the frequency information of the local clock signal to obtain a frequency drift amount;
generating first correction information according to the frequency drift amount, and adjusting the frequency of the local clock signal to be the same as that of the main clock signal according to the first correction information;
comparing the phase information of the master clock signal with the phase information of the local clock signal to obtain a phase drift amount;
and generating second correction information according to the phase drift amount, and adjusting the phase of the local clock signal to be the same as the phase of the master clock signal according to the second correction information.
It should be noted that, comparing the local clock signal with the master clock signal, judging the deviation of the two clock signals, adjusting the frequency and the phase, so as to keep the two synchronous in real time, realize the clock synchronization of the fan blade and the far end, and improve the accuracy of the fan blade monitoring data.
According to the embodiment of the invention, a master clock signal is acquired, and is modulated and decomposed to obtain master signal frequency information and master signal phase information, specifically:
acquiring a master clock signal, and modulating the master clock signal to obtain a modulation signal;
comparing the modulation signal with a preset modulation signal to obtain a modulation deviation;
adjusting modulation parameters according to the modulation deviation, and obtaining an optimized modulation signal;
vector decomposition is carried out on the optimized modulation signal, and an amplitude vector and a phase vector are obtained;
generating a relation curve of the amplitude and the phase according to the amplitude vector and the phase vector;
and generating frequency information of the master clock signal and phase information of the master clock signal according to the relation curve.
It should be noted that, the main clock signal is modulated, so that a larger deviation range does not appear in the frequency of the signal, and the amplitude and the phase of the modulated signal are ensured to be in an analyzable range, thereby improving the analysis effect.
According to the embodiment of the invention, a fan blade monitoring signal is obtained to obtain a local clock signal, and the local clock signal is modulated and decomposed to obtain frequency information of the local clock signal and phase information of the local clock signal, which comprises the following steps:
acquiring fan blade monitoring signals of different monitoring points, and generating fan blade monitoring signal waveform diagrams of the different monitoring points;
analyzing waveform diagrams of fan blade monitoring signals of different monitoring points, and calculating Euclidean distances between waveforms of the different monitoring points;
generating waveform gain coefficients of different monitoring points according to the Euclidean distance, and carrying out amplitude and phase shift on the waveform gain coefficients and corresponding waveforms;
and adjusting the waveforms of different monitoring points according to the waveform gain coefficients to enable the waveforms of the different monitoring points to coincide.
It should be noted that, by analyzing the signal waveforms of different monitoring points, waveform adjustment is performed to make the signal waveforms of different monitoring points coincide, that is, the frequency and the phase of the signal waveforms of different monitoring points are the same, so that when the clock signal of the monitoring point and the master clock signal are analyzed, errors are reduced.
According to the embodiment of the invention, the waveform gain coefficients of different monitoring points are generated according to the Euclidean distance, and the waveform gain coefficients and the corresponding waveforms are subjected to amplitude and phase shift, which comprises the following steps:
Acquiring signal waveforms of two different monitoring points, and performing Euclidean distance calculation on the two signal waveforms;
comparing the Euclidean distance with a preset distance value to obtain a distance deviation rate;
judging whether the distance deviation rate is larger than a preset distance deviation rate threshold value or not;
if the signal waveform of the first monitoring point is larger than the signal waveform of the second monitoring point, generating a first waveform gain coefficient according to the signal waveform of one of the monitoring points, generating a second waveform gain coefficient according to the signal waveform of the other monitoring point, and bidirectionally adjusting the signal waveforms of the two monitoring points according to the first waveform gain coefficient and the second waveform gain coefficient;
if the signal waveform of one monitoring point is smaller than the signal waveform of the other monitoring point, generating a waveform approaching coefficient, and approaching the signal waveform of one monitoring point to the signal waveform of the other monitoring point according to the waveform approaching coefficient.
It should be noted that, the Euclidean distance judgment is performed by judging the signal waveforms of the two monitoring points, when the signal waveforms of the two monitoring points have larger deviation, the signal waveforms of the two monitoring points are simultaneously subjected to bidirectional adjustment, so that the processing error in the adjustment process is reduced, and the processing precision is improved.
According to the embodiment of the invention, the phase drift amount is obtained by comparing the phase information of the main clock signal with the phase information of the local clock signal, and the method specifically comprises the following steps:
Acquiring a master clock signal waveform, and performing smoothing on the master clock signal waveform to obtain an optimized master clock signal waveform;
calculating a master clock signal zero point according to the optimized master clock signal waveform, and calculating the difference value between two adjacent master clock signal zero points to obtain the phase of the master clock signal;
acquiring a local clock signal waveform, and performing smoothing treatment on the local clock signal waveform to obtain an optimized local clock signal waveform;
calculating a local clock signal zero point according to the optimized local clock signal waveform, and calculating the difference value between two adjacent local clock signal zero points to obtain the phase of the local clock signal;
and calculating the difference value between the phase of the main clock signal and the phase of the local clock signal to obtain the phase drift amount.
The signal zero point is calculated by analyzing waveforms of the master clock signal and the local clock signal, the master clock signal and the local clock signal are sinusoidal signals and have a plurality of signal zero points, a phase value is obtained by calculating a difference value between adjacent signal zero points, and phase adjustment is performed according to phase deviation of the master clock signal and the local clock signal, so that the phase of the master clock signal is overlapped with the phase of the local clock signal, thereby realizing clock synchronization.
According to the embodiment of the invention, a master clock signal waveform is obtained, and is subjected to smoothing processing to obtain an optimized master clock signal waveform, which specifically comprises the following steps:
acquiring a main clock signal waveform, extracting waveform characteristics, and comparing the waveform characteristics with preset characteristics to obtain a characteristic deviation rate;
if the characteristic deviation rate is larger than the first characteristic deviation rate threshold and smaller than the second characteristic deviation rate threshold, generating feedback information, and correcting the waveform of the main clock signal according to the feedback information;
if the characteristic deviation rate is larger than the second characteristic deviation rate threshold value, eliminating the corresponding waveform characteristic;
the first characteristic deviation rate threshold is less than the second characteristic deviation rate threshold.
The method is characterized in that the waveform characteristics are extracted, the waveform of the main clock signal is analyzed, the characteristic deviation of the waveform of the main clock signal is judged, the waveform characteristics are processed, and the response accuracy of the waveform characteristics of the main clock signal is improved.
According to an embodiment of the present invention, further comprising: each independent monitoring point corresponds to a local clock, and count values are obtained by analyzing zero crossing points of periodic output signals of the monitoring points and counting the zero crossing points;
when the count value reaches a preset value, the interrupt response generates a clock signal, the counter is refilled with an initial value, and a new round of counting is started.
According to an embodiment of the present invention, further comprising: after the master clock and the slave clock acquire time stamp information according to an IEEE1588 protocol synchronization process, calculating time deviation and delay value, and adjusting the time of the local clock to be consistent with the time of the master clock through a local clock algorithm; the local clock algorithm comprises step adjustment, temporary rate adjustment and PI control, and the application of the algorithm determines the speed, precision and stability of clock synchronization.
A third aspect of the present invention provides a computer readable storage medium having embodied therein a clock synchronization method program for inertial navigation technology based fan blade monitoring, which when executed by a processor, implements the steps of the clock synchronization method for inertial navigation technology based fan blade monitoring as in any of the above.
The invention discloses a clock synchronization method and a clock synchronization system for fan blade monitoring based on inertial navigation technology, which are characterized in that a master clock signal is obtained, and is modulated and decomposed to obtain frequency information and phase information of the master clock signal; acquiring a fan blade monitoring signal to obtain a local clock signal, and modulating and decomposing the local clock signal to obtain frequency information and phase information of the local clock signal; comparing the frequency information of the main clock signal with the frequency information of the local clock signal to obtain a frequency drift amount; generating first correction information according to the frequency drift amount, and adjusting the frequency of the local clock signal to be the same as that of the main clock signal according to the first correction information; comparing the phase information of the master clock signal with the phase information of the local clock signal to obtain a phase drift amount; generating second correction information according to the phase drift amount, and adjusting the phase of the local clock signal to be the same as the phase of the master clock signal according to the second correction information; the frequency and the phase are compared with the frequency and the phase of the local clock signal, and the frequency and the phase are adjusted, so that the frequency and the phase are kept the same, and the real-time synchronization of the clocks is realized.
In the several embodiments provided in this application, it should be understood that the disclosed apparatus and method may be implemented in other ways. The above described device embodiments are only illustrative, e.g. the division of units is only one logical function division, and there may be other divisions in actual implementation, such as: multiple units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. In addition, the various components shown or discussed may be coupled or directly coupled or communicatively coupled to each other via some interface, whether indirectly coupled or communicatively coupled to devices or units, whether electrically, mechanically, or otherwise.
The units described above as separate components may or may not be physically separate, and components shown as units may or may not be physical units; can be located in one place or distributed to a plurality of network units; some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in each embodiment of the present invention may be integrated in one processing unit, or each unit may be separately used as one unit, or two or more units may be integrated in one unit; the integrated units may be implemented in hardware or in hardware plus software functional units.
Those of ordinary skill in the art will appreciate that: all or part of the steps for implementing the above method embodiments may be implemented by hardware related to program instructions, and the foregoing program may be stored in a readable storage medium, where the program, when executed, performs steps including the above method embodiments; and the aforementioned storage medium includes: a mobile storage device, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk or an optical disk, or the like, which can store program codes.
Alternatively, the above-described integrated units of the present invention may be stored in a readable storage medium if implemented in the form of software functional modules and sold or used as separate products. Based on such understanding, the technical solution of the embodiments of the present invention may be embodied in essence or a part contributing to the prior art in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: a removable storage device, ROM, RAM, magnetic or optical disk, or other medium capable of storing program code.
Claims (10)
1. A clock synchronization method for fan blade monitoring based on inertial navigation technology, comprising:
acquiring a master clock signal, and modulating and decomposing the master clock signal to obtain frequency information of the master clock signal and phase information of the master clock signal;
acquiring a fan blade monitoring signal to obtain a local clock signal, and modulating and decomposing the local clock signal to obtain frequency information and phase information of the local clock signal;
comparing the frequency information of the main clock signal with the frequency information of the local clock signal to obtain a frequency drift amount;
generating first correction information according to the frequency drift amount, and adjusting the frequency of the local clock signal to be the same as that of the main clock signal according to the first correction information;
comparing the phase information of the master clock signal with the phase information of the local clock signal to obtain a phase drift amount;
and generating second correction information according to the phase drift amount, and adjusting the phase of the local clock signal to be the same as the phase of the master clock signal according to the second correction information.
2. The clock synchronization method for fan blade monitoring based on inertial navigation technology according to claim 1, wherein the method is characterized in that a master clock signal is obtained, and the master clock signal is modulated and decomposed to obtain master signal frequency information and master signal phase information, specifically:
Acquiring a master clock signal, and modulating the master clock signal to obtain a modulation signal;
comparing the modulation signal with a preset modulation signal to obtain a modulation deviation;
adjusting modulation parameters according to the modulation deviation, and obtaining an optimized modulation signal;
vector decomposition is carried out on the optimized modulation signal, and an amplitude vector and a phase vector are obtained;
generating a relation curve of the amplitude and the phase according to the amplitude vector and the phase vector;
and generating frequency information of the master clock signal and phase information of the master clock signal according to the relation curve.
3. The clock synchronization method for fan blade monitoring based on inertial navigation technology according to claim 2, wherein obtaining a fan blade monitoring signal to obtain a local clock signal, and performing modulation decomposition on the local clock signal to obtain frequency information of the local clock signal and phase information of the local clock signal, comprises:
acquiring fan blade monitoring signals of different monitoring points, and generating fan blade monitoring signal waveform diagrams of the different monitoring points;
analyzing waveform diagrams of fan blade monitoring signals of different monitoring points, and calculating Euclidean distances between waveforms of the different monitoring points;
Generating waveform gain coefficients of different monitoring points according to the Euclidean distance, and carrying out amplitude and phase shift on the waveform gain coefficients and corresponding waveforms;
and adjusting the waveforms of different monitoring points according to the waveform gain coefficients to enable the waveforms of the different monitoring points to coincide.
4. The clock synchronization method for fan blade monitoring based on inertial navigation technology according to claim 3, wherein generating waveform gain coefficients of different monitoring points according to the euclidean distance, and performing amplitude and phase shift on the waveform gain coefficients and corresponding waveforms, specifically comprising:
acquiring signal waveforms of two different monitoring points, and performing Euclidean distance calculation on the two signal waveforms;
comparing the Euclidean distance with a preset distance value to obtain a distance deviation rate;
judging whether the distance deviation rate is larger than a preset distance deviation rate threshold value or not;
if the signal waveform of the first monitoring point is larger than the signal waveform of the second monitoring point, generating a first waveform gain coefficient according to the signal waveform of one of the monitoring points, generating a second waveform gain coefficient according to the signal waveform of the other monitoring point, and bidirectionally adjusting the signal waveforms of the two monitoring points according to the first waveform gain coefficient and the second waveform gain coefficient;
if the signal waveform of one monitoring point is smaller than the signal waveform of the other monitoring point, generating a waveform approaching coefficient, and approaching the signal waveform of one monitoring point to the signal waveform of the other monitoring point according to the waveform approaching coefficient.
5. The clock synchronization method for fan blade monitoring based on inertial navigation technology according to claim 4, wherein comparing the phase information of the master clock signal with the phase information of the local clock signal to obtain the phase drift amount, specifically comprising:
acquiring a master clock signal waveform, and performing smoothing on the master clock signal waveform to obtain an optimized master clock signal waveform;
calculating a master clock signal zero point according to the optimized master clock signal waveform, and calculating the difference value between two adjacent master clock signal zero points to obtain the phase of the master clock signal;
acquiring a local clock signal waveform, and performing smoothing treatment on the local clock signal waveform to obtain an optimized local clock signal waveform;
calculating a local clock signal zero point according to the optimized local clock signal waveform, and calculating the difference value between two adjacent local clock signal zero points to obtain the phase of the local clock signal;
and calculating the difference value between the phase of the main clock signal and the phase of the local clock signal to obtain the phase drift amount.
6. The clock synchronization method for fan blade monitoring based on inertial navigation technology according to claim 5, wherein obtaining a master clock signal waveform, and smoothing the master clock signal waveform to obtain an optimized master clock signal waveform, specifically comprising:
Acquiring a main clock signal waveform, extracting waveform characteristics, and comparing the waveform characteristics with preset characteristics to obtain a characteristic deviation rate;
if the characteristic deviation rate is larger than the first characteristic deviation rate threshold and smaller than the second characteristic deviation rate threshold, generating feedback information, and correcting the waveform of the main clock signal according to the feedback information;
if the characteristic deviation rate is larger than the second characteristic deviation rate threshold value, eliminating the corresponding waveform characteristic;
the first characteristic deviation rate threshold is less than the second characteristic deviation rate threshold.
7. A clock synchronization system for fan blade monitoring based on inertial navigation technology, the system comprising: a memory and a processor, wherein the memory comprises a program for a clock synchronization method for fan blade monitoring based on inertial navigation technology, and the program for the clock synchronization method for fan blade monitoring based on inertial navigation technology realizes the following steps when being executed by the processor:
acquiring a master clock signal, and modulating and decomposing the master clock signal to obtain frequency information of the master clock signal and phase information of the master clock signal;
acquiring a fan blade monitoring signal to obtain a local clock signal, and modulating and decomposing the local clock signal to obtain frequency information and phase information of the local clock signal;
Comparing the frequency information of the main clock signal with the frequency information of the local clock signal to obtain a frequency drift amount;
generating first correction information according to the frequency drift amount, and adjusting the frequency of the local clock signal to be the same as that of the main clock signal according to the first correction information;
comparing the phase information of the master clock signal with the phase information of the local clock signal to obtain a phase drift amount;
and generating second correction information according to the phase drift amount, and adjusting the phase of the local clock signal to be the same as the phase of the master clock signal according to the second correction information.
8. The clock synchronization system for fan blade monitoring based on inertial navigation technology according to claim 7, wherein the method comprises the steps of obtaining a master clock signal, and performing modulation decomposition on the master clock signal to obtain master signal frequency information and master signal phase information, and specifically comprises the following steps:
acquiring a master clock signal, and modulating the master clock signal to obtain a modulation signal;
comparing the modulation signal with a preset modulation signal to obtain a modulation deviation;
adjusting modulation parameters according to the modulation deviation, and obtaining an optimized modulation signal;
vector decomposition is carried out on the optimized modulation signal, and an amplitude vector and a phase vector are obtained;
Generating a relation curve of the amplitude and the phase according to the amplitude vector and the phase vector;
and generating frequency information of the master clock signal and phase information of the master clock signal according to the relation curve.
9. The clock synchronization system for fan blade monitoring based on inertial navigation technology according to claim 8, wherein the fan blade monitoring signal is obtained to obtain a local clock signal, and the local clock signal is modulated and decomposed to obtain frequency information of the local clock signal and phase information of the local clock signal, and the clock synchronization system specifically comprises:
acquiring fan blade monitoring signals of different monitoring points, and generating fan blade monitoring signal waveform diagrams of the different monitoring points;
analyzing waveform diagrams of fan blade monitoring signals of different monitoring points, and calculating Euclidean distances between waveforms of the different monitoring points;
generating waveform gain coefficients of different monitoring points according to the Euclidean distance, and carrying out amplitude and phase shift on the waveform gain coefficients and corresponding waveforms;
and adjusting the waveforms of different monitoring points according to the waveform gain coefficients to enable the waveforms of the different monitoring points to coincide.
10. The clock synchronization system for fan blade monitoring based on inertial navigation technology according to claim 9, wherein generating waveform gain coefficients of different monitoring points according to euclidean distance, and performing amplitude and phase shift on the waveform gain coefficients and corresponding waveforms, specifically comprises:
Acquiring signal waveforms of two different monitoring points, and performing Euclidean distance calculation on the two signal waveforms;
comparing the Euclidean distance with a preset distance value to obtain a distance deviation rate;
judging whether the distance deviation rate is larger than a preset distance deviation rate threshold value or not;
if the signal waveform of the first monitoring point is larger than the signal waveform of the second monitoring point, generating a first waveform gain coefficient according to the signal waveform of one of the monitoring points, generating a second waveform gain coefficient according to the signal waveform of the other monitoring point, and bidirectionally adjusting the signal waveforms of the two monitoring points according to the first waveform gain coefficient and the second waveform gain coefficient;
if the signal waveform of one monitoring point is smaller than the signal waveform of the other monitoring point, generating a waveform approaching coefficient, and approaching the signal waveform of one monitoring point to the signal waveform of the other monitoring point according to the waveform approaching coefficient.
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