CN114139670A - Data processing system and method of rotation sensor - Google Patents
Data processing system and method of rotation sensor Download PDFInfo
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Abstract
The invention discloses a data processing system and a data processing method of a rotary sensor, which belong to the technical field of data processing of rotary sensors, and comprise a rotary sensor, a curve module, a data receiving module and a server; the rotary sensor is arranged on the mechanical rotating part, and a self-control coil, a data acquisition unit and a wireless transmission unit are arranged in the rotary sensor; the self-made coil rotates along with the rotation of the rotation sensor, and cuts the geomagnetic field in the rotation process to generate a voltage signal; the data acquisition unit is used for acquiring voltage signals generated by cutting the geomagnetic field by the self-made coil, recording corresponding acquisition time, integrating the acquired voltage signals and the corresponding acquisition time into voltage acquisition data, and transmitting the voltage acquisition data to the wireless transmission unit, and the wireless transmission unit sends the received voltage acquisition data to the data receiving module; and the data receiving module transmits the received voltage acquisition data to the curve module.
Description
Technical Field
The invention belongs to the technical field of data processing of rotary sensors, and particularly relates to a data processing system and a data processing method of a rotary sensor.
Background
The rotation sensor is a high-precision sensor which is arranged on a rotating object and used for measuring the rotation number of the rotating object, but when the rotation number of the rotating object is measured by the conventional rotation sensor, a large amount of signal data needs to be analyzed, so that the data processing efficiency is low, and the space is also improved.
Disclosure of Invention
In order to solve the problems of the above solutions, the present invention provides a data processing system and method for a rotation sensor.
The purpose of the invention can be realized by the following technical scheme:
a data processing system of a rotation sensor comprises the rotation sensor, a curve module, a data receiving module and a server;
the rotary sensor is arranged on the mechanical rotating part, and a self-control coil, a data acquisition unit and a wireless transmission unit are arranged in the rotary sensor; the self-made coil rotates along with the rotation of the rotation sensor, and cuts the geomagnetic field in the rotation process to generate a voltage signal; the data acquisition unit is used for acquiring voltage signals generated by cutting the geomagnetic field by the self-made coil, recording corresponding acquisition time, integrating the acquired voltage signals and the corresponding acquisition time into voltage acquisition data, and transmitting the voltage acquisition data to the wireless transmission unit, and the wireless transmission unit sends the received voltage acquisition data to the data receiving module; the data receiving module transmits the received voltage acquisition data to the curve module;
the curve module analyzes the received voltage acquisition data, receives the voltage acquisition data sent by the data receiving module and receives the voltage acquisition data according to the voltage acquisition dataThe obtained voltage acquisition data establishes an induced electromotive force curve, the number of turns of a coil of a self-made coil and the area of the coil are obtained, the component of a geomagnetic field at the position of the current rotary sensor in the direction of a vertical rotation axis is acquired, the initial phase angle of induced electromotive force and the initial angular frequency of the self-made coil are identified from the induced electromotive force curve, and an induced electromotive force formula U (NSB) is establishedrω0sin (ω t + δ); the angular frequency omega of the current self-control coil is calculated in real time through an induced electromotive force formula, and then the rotation revolution of the rotation sensor is calculated according to the formula Vr f 2 pi omega.
Further, U is induced electromotive force in the self-made coil; n is the number of turns of the self-made coil; s is the area wound by the self-made coil; br is the component of the geomagnetic field at the current position of the rotation sensor in the direction vertical to the rotation axis; omega0The initial angular frequency of the self-made coil; omega is the angular frequency of the self-made coil; delta is an initial phase angle; vr is the rotation speed; f is the rotational frequency of the rotation sensor.
Further, the method for acquiring the component of the geomagnetic field in the direction perpendicular to the rotation axis at the current position of the rotation sensor comprises the following steps:
the geomagnetic field intensity and the corresponding magnetic field normal of the current position of the rotary sensor are obtained from the internet, the rotation axis angle of the current self-made coil is obtained, and the component of the geomagnetic field of the current position of the rotary sensor in the direction vertical to the rotation axis is calculated according to the trigonometric function relation.
Further, the wireless transmission unit processes the voltage acquisition data before sending the received voltage acquisition data to the data receiving module, and the specific method comprises the following steps:
the method comprises the steps of setting different address numbers for different rotary sensors, obtaining the address number of the current rotary sensor, matching the corresponding data receiving module, identifying the characteristic data of the data receiving module, establishing a data sending strip, wherein the data sending strip comprises an address block, a characteristic block and a data block, the address block, the characteristic block and the data block are sequentially connected, inputting the obtained address number into the address block, inputting the characteristic data of the identified data receiving module into the characteristic block, inputting the received voltage acquisition data into the data block, completing the anti-interference processing of the voltage acquisition data, and sending the current data sending strip.
Further, the method of identifying characteristic data of a data receiving module includes:
and an image matrix is arranged in the data receiving module, when the data receiving module is matched with the corresponding data receiving module, the image matrix in the data receiving module is identified, the identified image matrix is converted into a corresponding inverse matrix, and the converted inverse matrix is marked as characteristic data.
Further, the method for setting the image matrix in the data receiving module comprises the following steps:
when the matching with the rotary sensor is successful, a high-definition image is obtained arbitrarily, a coordinate system is established, a matrix coordinate template is set, the high-definition image is subjected to gray processing, the average gray value of the gray image is obtained, coordinates in the matrix coordinate template are marked on the gray image to serve as acquisition points, the gray value of the acquisition points is obtained, the gray value of the acquisition points is compared with the average gray value of the gray image, the gray value of the acquisition points larger than the average gray value is marked as 1 and is input to the corresponding position in the matrix coordinate template, the gray value of the acquisition points not larger than the average gray value is marked as 0 and is input to the corresponding position in the matrix coordinate template, the current matrix coordinate template is marked as an image matrix, and the image matrix is reversible.
Further, the method for receiving the voltage acquisition data sent by the wireless transmission unit by the data receiving module comprises the following steps:
acquiring an address number of a matched rotary sensor, receiving a data sending strip sent by a wireless transmission unit, matching the acquired address number with the received data sending strip, multiplying an image matrix by characteristic data after matching is successful, and acquiring corresponding voltage acquisition data when the multiplication of the image matrix and the characteristic data is equal to E; and when the multiplication of the image matrix and the characteristic data is not equal to E, the voltage acquisition data is failed.
Further, still be equipped with the rectifier unit in the rotary sensor, the rectifier unit is connected with self-control coil, and the rectifier unit is used for cutting the induced current with self-control coil and produces the induced current and carry out the rectification for induced current satisfies rotary sensor's power supply requirement.
A data processing method of a rotation sensor comprises the following steps:
the method comprises the following steps: arranging a self-made coil in the rotary sensor, collecting voltage signals generated by cutting a geomagnetic field by the self-made coil in a rotating process in real time, and integrating the collected voltage signals and corresponding collection time into voltage collection data;
step two: transmitting the voltage acquisition data in a wireless transmission mode, and performing anti-interference processing before transmission;
step three: receiving voltage acquisition data and establishing an induced electromotive force curve;
step four: and analyzing the induced electromotive force curve to obtain the rotation revolution of the rotary sensor.
Compared with the prior art, the invention has the beneficial effects that: the rotation characteristics of the rotation sensor such as the rotation angular velocity, the angular acceleration and the like change along with time, the number of turns and the area of the self-made coil are known quantities, so that the equivalent magnetic field intensity can be calculated, and under the condition that the included angle between the rotation axis of the rotation sensor and the normal line of the geomagnetic field and the geomagnetic field intensity are known, the method or the system provided by the application is simple, convenient, effective and feasible, and the rotation revolution number of the rotation sensor can be efficiently detected; the received voltage acquisition data are processed before being sent to the data receiving module, so that the anti-interference capacity of data transmission is improved, and the accuracy and the efficiency of subsequent voltage acquisition data processing are guaranteed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic block diagram of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, a data processing system of a rotation sensor includes a rotation sensor, a curve module, a data receiving module, and a server;
the rotary sensor is arranged on the mechanical rotating part, and a self-control coil, a data acquisition unit and a wireless transmission unit are arranged in the rotary sensor;
the self-made coil rotates along with the rotation of the rotation sensor, and cuts the geomagnetic field in the rotation process to generate a voltage signal; the data acquisition unit is used for acquiring voltage signals generated by cutting the geomagnetic field by the self-made coil, recording corresponding acquisition time, integrating the acquired voltage signals and the corresponding acquisition time into voltage acquisition data, and transmitting the voltage acquisition data to the wireless transmission unit, and the wireless transmission unit sends the received voltage acquisition data to the data receiving module;
the data receiving module is used for receiving the voltage acquisition data sent by the wireless transmission unit and transmitting the received voltage acquisition data to the curve module.
The curve module is used for analyzing the received voltage acquisition data, and the specific method comprises the following steps:
the voltage acquisition data sent by the data receiving module is received, and the induced electromotive force curve is established according to the received voltage acquisition data, because the induced electromotive force generated by cutting the geomagnetic field according to the self-made coil is a sine function, the induced electromotive force curve can be directly established according to the received voltage acquisition dataAcquiring the number of turns of a coil of a self-made coil and the area of the coil, acquiring the component of a geomagnetic field at the position of the current rotary sensor in the direction vertical to the rotation axis, identifying the initial phase angle of induced electromotive force and the initial angular frequency of the self-made coil from an induced electromotive force curve, and establishing an induced electromotive force formula U-NSBrω0sin(ωt+δ)；
In the formula, U is induced electromotive force in the self-made coil; n is the number of turns of the self-made coil; s is the area wound by the self-made coil; br is the component of the geomagnetic field at the current position of the rotation sensor in the direction vertical to the rotation axis; omega0The initial angular frequency of the self-made coil; omega is the angular frequency of the self-made coil; delta is an initial phase angle; t is the process time, namely the time elapsed from the beginning of rotation, and ω t is the angle rotated by the self-made coil;
the angular frequency omega of the current self-made coil can be calculated in real time through an induced electromotive force formula, and the rotation revolution of the rotation sensor is calculated according to the formula Vr f 2 pi omega;
where Vr is a rotation speed, i.e., the number of rotation revolutions per second of the rotation sensor, which is defined to coincide with the frequency f of rotation of the rotation sensor.
The method for acquiring the component of the geomagnetic field at the position where the current rotation sensor is located in the direction vertical to the rotation axis comprises the following steps:
the geomagnetic field intensity and the corresponding magnetic field normal of the current position of the rotary sensor are obtained from the internet, the rotation axis angle of the current self-made coil is obtained, and the component of the geomagnetic field of the current position of the rotary sensor in the direction vertical to the rotation axis is calculated according to the trigonometric function relation.
The rotation characteristics of the rotation sensor such as the rotating angular velocity, the angular acceleration and the like change along with time, the number of turns and the area of the self-made coil are known quantities, so that the equivalent magnetic field intensity can be calculated, and under the condition that the included angle between the rotation axis of the rotation sensor and the normal line of the geomagnetic field and the geomagnetic field intensity are known, the method or the system provided by the application is simple, convenient, effective and feasible, and the rotation revolution number of the rotation sensor can be detected efficiently.
In one embodiment, the wireless transmission unit processes the voltage acquisition data before sending the received voltage acquisition data to the data receiving module, so as to improve the anti-interference capability of the wireless transmission data, because a large number of interference signals exist in the space and the anti-interference capability of the wireless transmission is poor, the subsequent data processing is influenced; therefore, certain anti-interference processing is required before voltage acquisition data transmission; the specific method comprises the following steps:
setting different address numbers for different rotary sensors, or directly acquiring communication addresses corresponding to the rotary sensors, acquiring the address number of the current rotary sensor, matching the corresponding data receiving module, identifying the characteristic data of the data receiving module, and establishing a data sending strip, wherein the data sending strip comprises an address block, a characteristic block and a data block, the address block, the characteristic block and the data block are sequentially connected, namely, the characteristic block matching can be carried out only when the address block is successfully matched, the data in the data block can be received only when the characteristic block is successfully matched, the address block is used for storing the address numbers, the characteristic block is used for storing the characteristic data, and the data block is used for storing the voltage acquisition data; and inputting the acquired address number into an address block, inputting the characteristic data of the identified data receiving module into the characteristic block, inputting the received voltage acquisition data into the data block, finishing the anti-interference processing of the voltage acquisition data, and sending the current data sending strip.
The received voltage acquisition data are processed before being sent to the data receiving module, so that the anti-interference capacity of data transmission is improved, and the accuracy and the efficiency of subsequent voltage acquisition data processing are guaranteed.
The method for identifying the characteristic data of the data receiving module comprises the following steps:
and an image matrix is arranged in the data receiving module, when the data receiving module is matched with the corresponding data receiving module, the image matrix in the data receiving module is identified, the identified image matrix is converted into a corresponding inverse matrix, and the converted inverse matrix is marked as characteristic data.
The method for setting the image matrix in the data receiving module comprises the following steps:
when the matching with the rotary sensor is successful, randomly acquiring a high-definition image, establishing a coordinate system, setting a matrix coordinate template, wherein the matrix coordinate template is a coordinate corresponding to each element in the matrix, and replacing the corresponding element in the matrix with the corresponding value on the coordinate to form a matrix; carrying out gray processing on the high-definition image to obtain an average gray value of the gray image, marking coordinates in a matrix coordinate template on the gray image to be used as acquisition points, obtaining gray values of the acquisition points, comparing the gray values of the acquisition points with the average gray value of the gray image, marking the gray values of the acquisition points larger than the average gray value as 1, inputting the gray values of the acquisition points into corresponding positions in the matrix coordinate template, marking the gray values of the acquisition points not larger than the average gray value as 0, inputting the gray values of the acquisition points into corresponding positions in the matrix coordinate template, marking the current matrix coordinate template as an image matrix, wherein the image matrix is reversible.
The method for receiving the voltage acquisition data sent by the wireless transmission unit by the data receiving module comprises the following steps:
the method comprises the steps of obtaining an address number of a matched rotary sensor, receiving a data sending strip sent by a wireless transmission unit, matching the obtained address number with the received data sending strip, multiplying an image matrix with characteristic data after matching is successful, wherein the image matrix can be successfully matched because the image matrix is matched with the corresponding rotary sensor, when a non-matched data receiving module receives the data sending strip, the image matrix cannot be successfully matched, and when the multiplication of the image matrix and the characteristic data is equal to E, corresponding voltage acquisition data is obtained; when the multiplication of the image matrix and the characteristic data is not equal to E, the voltage acquisition data is failed; the reason for failure in acquiring the voltage acquisition data is that the received data sending strip is not sent to the current data receiving module, and the current data receiving module is matched with the rotary sensor and used for the address number of the rotary sensor, so that the matching is successful, but because the data receiving module is not corresponding, the multiplication of the image matrix and the characteristic data is not equal to E, so that the failure in acquiring the voltage acquisition data is caused.
In one embodiment, because the home-made coil performs magnetic line cutting motion, induced voltage is generated in the cutting process, and induced current is generated under certain conditions, if the generated induced current is utilized, the self-powered rotation sensor can be realized;
still be equipped with the rectifier unit in the rotation sensor, the rectifier unit is connected with self-control coil, and the rectifier unit is used for carrying out the rectification with self-control coil cutting earth magnetic line induced-current production, and the concrete method includes:
the power supply requirement of the rotary sensor is obtained, corresponding rectification parameters are set according to the obtained power supply requirement, the induced current generated by the self-made coil cutting the geomagnetic wire is obtained in real time, and the induced current is rectified according to the rectification parameters, so that the induced current meets the power supply requirement of the rotary sensor. Specifically, how to obtain the rectification parameters can be set according to the existing power generation principle.
A data processing method of a rotation sensor is applied to any one of the data processing systems of the rotation sensor, and comprises the following steps:
the method comprises the following steps: arranging a self-made coil in the rotary sensor, collecting voltage signals generated by cutting a geomagnetic field by the self-made coil in a rotating process in real time, and integrating the collected voltage signals and corresponding collection time into voltage collection data;
step two: transmitting the voltage acquisition data in a wireless transmission mode, and performing anti-interference processing before transmission;
setting different address numbers for different rotary sensors, acquiring the address number of the current rotary sensor, matching the corresponding data receiving module, identifying the characteristic data of the data receiving module, establishing a data sending strip, wherein the data sending strip comprises an address block, a characteristic block and a data block, the address block, the characteristic block and the data block are sequentially connected, inputting the acquired address number into the address block, inputting the characteristic data of the identified data receiving module into the characteristic block, inputting the received voltage acquisition data into the data block, completing the anti-interference processing of the voltage acquisition data, and sending the current data sending strip;
step three: receiving voltage acquisition data and establishing an induced electromotive force curve;
acquiring an address number of a matched rotary sensor, receiving a data sending strip sent by a wireless transmission unit, matching the acquired address number with the received data sending strip, multiplying an image matrix by characteristic data after matching is successful, and acquiring corresponding voltage acquisition data when the multiplication of the image matrix and the characteristic data is equal to E; when the multiplication of the image matrix and the characteristic data is not equal to E, the voltage acquisition data is failed;
step four: analyzing the induced electromotive force curve to obtain the rotation revolution of the rotary sensor;
acquiring the number of turns of a coil of a self-made coil and the area of the coil, acquiring the component of a geomagnetic field at the position of the current rotary sensor in the direction vertical to the rotation axis, identifying the initial phase angle of induced electromotive force and the initial angular frequency of the self-made coil from an induced electromotive force curve, and establishing an induced electromotive force formula U-NSBrω0sin (ω t + δ); the angular frequency omega of the current self-control coil can be calculated in real time through an induced electromotive force formula, and the rotation revolution of the rotation sensor is calculated according to the formula Vr f 2 pi omega.
The above formulas are all calculated by removing dimensions and taking numerical values thereof, the formula is a formula which is obtained by acquiring a large amount of data and performing software simulation to obtain the closest real situation, and the preset parameters and the preset threshold value in the formula are set by the technical personnel in the field according to the actual situation or obtained by simulating a large amount of data.
The working principle of the invention is as follows: arranging a self-made coil in the rotary sensor, collecting voltage signals generated by cutting a geomagnetic field by the self-made coil in a rotating process in real time, and integrating the collected voltage signals and corresponding collection time into voltage collection data; transmitting the voltage acquisition data in a wireless transmission mode, and performing anti-interference processing before transmission; receiving voltage acquisition data and establishing an induced electromotive force curve; and analyzing the induced electromotive force curve to obtain the rotation revolution of the rotary sensor.
Although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the spirit and scope of the present invention.
Claims (9)
1. The data processing system of the rotation sensor is characterized by comprising the rotation sensor, a curve module, a data receiving module and a server;
the rotary sensor is arranged on the mechanical rotating part, and a self-control coil, a data acquisition unit and a wireless transmission unit are arranged in the rotary sensor; the self-made coil rotates along with the rotation of the rotation sensor, and cuts the geomagnetic field in the rotation process to generate a voltage signal; the data acquisition unit is used for acquiring voltage signals generated by cutting the geomagnetic field by the self-made coil, recording corresponding acquisition time, integrating the acquired voltage signals and the corresponding acquisition time into voltage acquisition data, and transmitting the voltage acquisition data to the wireless transmission unit, and the wireless transmission unit sends the received voltage acquisition data to the data receiving module; the data receiving module transmits the received voltage acquisition data to the curve module;
the curve module analyzes the received voltage acquisition data, establishes an induced electromotive force curve according to the received voltage acquisition data, acquires the number of turns of a coil of a self-made coil and the area of the coil wound, acquires the component of a geomagnetic field at the position of the current rotary sensor in the direction of a vertical rotation axis, identifies the initial phase angle of induced electromotive force and the initial angular frequency of the self-made coil from the induced electromotive force curve, and establishes an induced electromotive force formula U (NSB)rω0sin (ω t + δ); the angular frequency omega of the current self-control coil is calculated in real time through an induced electromotive force formula, and then the rotation revolution of the rotation sensor is calculated according to the formula Vr f 2 pi omega.
2. Data processing of a rotation sensor according to claim 1The system is characterized in that U is induced electromotive force in the self-made coil; n is the number of turns of the self-made coil; s is the area wound by the self-made coil; br is the component of the geomagnetic field at the current position of the rotation sensor in the direction vertical to the rotation axis; omega0The initial angular frequency of the self-made coil; omega is the angular frequency of the self-made coil; delta is an initial phase angle; vr is the rotation speed; f is the rotational frequency of the rotation sensor.
3. The data processing system of claim 1, wherein the method for acquiring the component of the geomagnetic field in the vertical rotation axis direction at the current position of the rotation sensor comprises:
the geomagnetic field intensity and the corresponding magnetic field normal of the current position of the rotary sensor are obtained from the internet, the rotation axis angle of the current self-made coil is obtained, and the component of the geomagnetic field of the current position of the rotary sensor in the direction vertical to the rotation axis is calculated according to the trigonometric function relation.
4. The data processing system of the rotation sensor as claimed in claim 1, wherein the wireless transmission unit processes the voltage acquisition data before sending the received voltage acquisition data to the data receiving module, and the specific method comprises:
the method comprises the steps of setting different address numbers for different rotary sensors, obtaining the address number of the current rotary sensor, matching the corresponding data receiving module, identifying the characteristic data of the data receiving module, establishing a data sending strip, wherein the data sending strip comprises an address block, a characteristic block and a data block, the address block, the characteristic block and the data block are sequentially connected, inputting the obtained address number into the address block, inputting the characteristic data of the identified data receiving module into the characteristic block, inputting the received voltage acquisition data into the data block, completing the anti-interference processing of the voltage acquisition data, and sending the current data sending strip.
5. The data processing system of a rotary sensor of claim 4, wherein the method of identifying the characteristic data of the data receiving module comprises:
and an image matrix is arranged in the data receiving module, when the data receiving module is matched with the corresponding data receiving module, the image matrix in the data receiving module is identified, the identified image matrix is converted into a corresponding inverse matrix, and the converted inverse matrix is marked as characteristic data.
6. The data processing system of claim 5, wherein the method for setting the image matrix in the data receiving module comprises:
when the matching with the rotary sensor is successful, a high-definition image is obtained arbitrarily, a coordinate system is established, a matrix coordinate template is set, the high-definition image is subjected to gray processing, the average gray value of the gray image is obtained, coordinates in the matrix coordinate template are marked on the gray image to serve as acquisition points, the gray value of the acquisition points is obtained, the gray value of the acquisition points is compared with the average gray value of the gray image, the gray value of the acquisition points larger than the average gray value is marked as 1 and is input to the corresponding position in the matrix coordinate template, the gray value of the acquisition points not larger than the average gray value is marked as 0 and is input to the corresponding position in the matrix coordinate template, the current matrix coordinate template is marked as an image matrix, and the image matrix is reversible.
7. The data processing system of the rotary sensor as claimed in claim 4, wherein the method for receiving the voltage acquisition data transmitted by the wireless transmission unit by the data receiving module comprises:
acquiring an address number of a matched rotary sensor, receiving a data sending strip sent by a wireless transmission unit, matching the acquired address number with the received data sending strip, multiplying an image matrix by characteristic data after matching is successful, and acquiring corresponding voltage acquisition data when the multiplication of the image matrix and the characteristic data is equal to E; and when the multiplication of the image matrix and the characteristic data is not equal to E, the voltage acquisition data is failed.
8. The data processing system of the rotation sensor according to claim 1, wherein a rectifying unit is further disposed in the rotation sensor, the rectifying unit is connected to the home-made coil, and the rectifying unit is configured to rectify an induced current generated by the home-made coil cutting the geomagnetic line, so that the induced current meets a power supply requirement of the rotation sensor.
9. A data processing method of a rotation sensor, which is applied to the data processing system of a rotation sensor according to any one of claims 1 to 8, the data processing method comprising:
the method comprises the following steps: arranging a self-made coil in the rotary sensor, collecting voltage signals generated by cutting a geomagnetic field by the self-made coil in a rotating process in real time, and integrating the collected voltage signals and corresponding collection time into voltage collection data;
step two: transmitting the voltage acquisition data in a wireless transmission mode, and performing anti-interference processing before transmission;
step three: receiving voltage acquisition data and establishing an induced electromotive force curve;
step four: and analyzing the induced electromotive force curve to obtain the rotation revolution of the rotary sensor.
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| 张凤阁，贾广隆，郑阳，关涛: "无刷电励磁同步电机的特性仿真与实验研究", 《电工技术学报》 * |
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| CN114139670B (en) | 2022-07-01 |
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