CN117269531A - Motor rotation speed steering detection device and detection method thereof - Google Patents
Motor rotation speed steering detection device and detection method thereof Download PDFInfo
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- CN117269531A CN117269531A CN202311209138.8A CN202311209138A CN117269531A CN 117269531 A CN117269531 A CN 117269531A CN 202311209138 A CN202311209138 A CN 202311209138A CN 117269531 A CN117269531 A CN 117269531A
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- 238000001514 detection method Methods 0.000 title claims abstract description 91
- 230000006698 induction Effects 0.000 claims abstract description 52
- 238000000034 method Methods 0.000 claims description 21
- 238000003801 milling Methods 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 9
- 230000005674 electromagnetic induction Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
- G01P3/48—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage
- G01P3/481—Devices characterised by the use of electric or magnetic means for measuring angular speed by measuring frequency of generated current or voltage of pulse signals
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P1/00—Details of instruments
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P13/00—Indicating or recording presence, absence, or direction, of movement
- G01P13/02—Indicating direction only, e.g. by weather vane
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/42—Devices characterised by the use of electric or magnetic means
- G01P3/44—Devices characterised by the use of electric or magnetic means for measuring angular speed
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/34—Testing dynamo-electric machines
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Indicating Or Recording The Presence, Absence, Or Direction Of Movement (AREA)
Abstract
The invention relates to the technical field of motor detection, and discloses a motor rotation speed steering detection device and a detection method thereof, wherein the device comprises the following components: the induction gear ring is provided with at least two missing teeth on the outer ring; the total distribution of all the missing teeth is asymmetric on the induction tooth ring; the sensor is used for collecting corresponding electric signals when the induction gear ring rotates along with the motor rotor; and the detection component is used for processing the electric signals acquired by the sensor to obtain the rotating speed and the steering direction of the motor. The gear ring tooth number distribution is changed, the corresponding electric signals are collected by the sensor to sense pulse distribution conditions, and then the detection part is used for obtaining the rotating speed and the steering direction of the motor, so that the rotating speed of the motor can be detected, the steering direction of the motor can be detected, the cost is low, and the gear ring tooth number distribution sensor is suitable for application scenes with low requirements on the rotating speed and the steering signal precision.
Description
Technical Field
The invention relates to the technical field of motor detection, in particular to a motor rotating speed steering detection device and a motor rotating speed steering detection method.
Background
The existing motor rotation speed steering detection technology generally comprises electromagnetic induction type, hall type, photoelectric encoder, magnetic encoder and other modes.
Taking electromagnetic induction type as an example, as shown in fig. 1 and 2, a housing of a motor is fixedly installed with an electromagnetic coil 02 of an electromagnetic induction type sensor through a mounting bracket 01, and an induction gear ring 03 is coaxially installed with a motor rotor 04. As shown in fig. 3, the electromagnetic induction sensor converts a corresponding change in magnetic flux caused by a change in rotational speed into an electrical signal to measure the position and rotational speed of the motor rotor 04 according to the law of electromagnetic induction; when the induction gear ring 03 rotates, the magnetic field is enhanced when the teeth approach to and are opposite to the electromagnetic coil 02; upon exiting the electromagnetic coil 02, the field is reduced, and an alternating induced electromotive force is generated in the electromagnetic coil 02, the frequency and amplitude of which will increase linearly with increasing engine speed. Such a sensor does not require additional power, has a simple structure and low cost, and is thus widely used, but can only provide rotational speed detection, and cannot provide steering detection. And hall type, photoelectric encoder, magnetic encoder, etc. can only provide steering detection and have higher cost.
Therefore, how to use lower cost to detect the rotation speed and the steering signal is a technical problem to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a motor rotation speed and rotation direction detection device and detection method thereof, which can detect the rotation speed of a motor and the rotation direction of the motor, and which is low in cost. The specific scheme is as follows:
a motor speed-rotation-direction detecting device, comprising:
the induction gear ring is provided with at least two missing teeth on the outer ring; the total distribution of all the missing teeth is asymmetric on the induction tooth ring;
the sensor is used for collecting corresponding electric signals when the induction gear ring rotates along with the motor rotor;
and the detection component is used for processing the electric signals acquired by the sensor to obtain the rotating speed and the steering direction of the motor.
Preferably, in the motor rotation speed steering detection device provided by the embodiment of the present invention, the detection component is specifically configured to convert an electrical signal collected by the sensor into a corresponding pulse signal, calculate the rotation speed of the motor according to the pulse count and time of the pulse signal, and obtain the steering of the motor according to the negative pulse distribution corresponding to the position where the missing tooth is located in the pulse signal.
Preferably, in the motor rotation speed and steering detection device provided by the embodiment of the invention, the outer ring of the induction gear ring is provided with a first missing tooth and a second missing tooth with different lengths;
the distance from the first missing tooth to the second missing tooth along the clockwise direction is unequal to the distance from the first missing tooth to the second missing tooth along the anticlockwise direction.
Preferably, in the motor rotation speed and rotation direction detection device provided by the embodiment of the present invention, the first missing tooth is formed by milling at least one tooth; the second missing tooth is formed by milling at least two teeth.
Preferably, in the above motor rotation speed steering detection device provided by the embodiment of the present invention, the detection unit is specifically configured to determine that the motor is steered in a first direction if a negative pulse distribution corresponding to a position where the first missing tooth is located first appears in the pulse signal, and then a negative pulse distribution corresponding to a position where the second missing tooth is located appears; and if the negative pulse distribution corresponding to the position of the second missing tooth appears in the pulse signal, and then the negative pulse distribution corresponding to the position of the first missing tooth appears, judging that the steering direction of the motor is a second direction opposite to the first direction.
Preferably, in the motor rotation speed and steering detection device provided by the embodiment of the present invention, when at least three missing teeth are provided on the outer ring of the induction gear ring, the length of each missing tooth is different.
Preferably, in the motor rotation speed and rotation direction detecting device provided by the embodiment of the present invention, when at least three missing teeth are provided on the outer ring of the induction gear ring, the length of at least one missing tooth is different from the lengths of other missing teeth.
The embodiment of the invention also provides a detection method of the motor rotation speed steering detection device, which comprises the following steps:
when the induction gear ring rotates along with the motor rotor, the sensor acquires corresponding electric signals; at least two missing teeth are arranged on the outer ring of the induction gear ring; the total distribution of all the missing teeth is asymmetric on the induction tooth ring;
the detection component processes the electric signals collected by the sensor to obtain the rotating speed and the steering direction of the motor.
Preferably, in the method for detecting the rotation speed and the rotation direction of the motor provided by the embodiment of the present invention, the detecting component processes the electric signal collected by the sensor to obtain the rotation speed and the rotation direction of the motor, and the method includes:
the detection part converts the electric signals acquired by the sensor into corresponding pulse signals, calculates the rotating speed of the motor according to the pulse count and time of the pulse signals, and obtains the steering of the motor according to the negative pulse distribution corresponding to the position of the missing tooth in the pulse signals.
Preferably, in the detection method of the motor rotation speed steering detection device provided by the embodiment of the present invention, when the outer ring of the induction gear ring has a first missing tooth and a second missing tooth with different lengths, the obtaining the steering of the motor according to the negative pulse distribution corresponding to the location of the missing tooth in the pulse signal includes:
if the negative pulse distribution corresponding to the position of the first missing tooth appears in the pulse signal, and then the negative pulse distribution corresponding to the position of the second missing tooth appears, judging that the steering direction of the motor is the first direction;
and if the negative pulse distribution corresponding to the position of the second missing tooth appears in the pulse signal, and then the negative pulse distribution corresponding to the position of the first missing tooth appears, judging that the steering direction of the motor is a second direction opposite to the first direction.
According to the technical scheme, the motor rotating speed steering detection device provided by the invention comprises the following components: the induction gear ring is provided with at least two missing teeth on the outer ring; the total distribution of all the missing teeth is asymmetric on the induction tooth ring; the sensor is used for collecting corresponding electric signals when the induction gear ring rotates along with the motor rotor; and the detection component is used for processing the electric signals acquired by the sensor to obtain the rotating speed and the steering direction of the motor.
According to the motor rotating speed steering detection device provided by the invention, at least two missing teeth are arranged on the induction gear ring, the total distribution of all missing teeth is asymmetric on the induction gear ring, so that the tooth number distribution of the gear ring is changed, the corresponding electric signals are collected by the sensor to sense pulse distribution conditions, and then the rotating speed and steering of the motor are obtained by adopting the detection component. In addition, the invention also provides a corresponding detection method for the motor rotation speed steering detection device, so that the detection device has more practicability, and the detection method has corresponding advantages.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the related art, the drawings that are required to be used in the embodiments or the related technical descriptions will be briefly described, and it is apparent that the drawings in the following description are only embodiments of the present invention, and other drawings may be obtained according to the provided drawings without inventive effort for those skilled in the art.
FIG. 1 is a schematic diagram of a conventional motor;
FIG. 2 is an enlarged schematic view of the electromagnetic induction sensor in FIG. 1;
FIG. 3 is a schematic diagram of the structure between the electromagnetic coil and the inductive ring gear of the sensor of FIG. 2;
fig. 4 is a schematic structural diagram of a motor rotation speed and rotation direction detection device according to an embodiment of the present invention;
FIG. 5 is a diagram showing the comparison between a pulse signal and a conventional original signal according to an embodiment of the present invention;
fig. 6 is a flowchart of a detection method of a motor rotation speed steering detection device according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention provides a motor rotation speed steering detection device, as shown in fig. 4, comprising:
the induction gear ring 1 is provided with at least two missing teeth on the outer ring; the total distribution of all the missing teeth is asymmetric on the induction tooth ring;
the sensor 2 is used for collecting corresponding electric signals when the induction gear ring rotates along with the motor rotor;
and the detection component is used for processing the electric signals acquired by the sensor to obtain the rotating speed and the steering direction of the motor.
In the motor rotating speed and steering detection device provided by the embodiment of the invention, at least two missing teeth are arranged on the induction gear ring, the total distribution of all missing teeth is asymmetric on the induction gear ring, so that the tooth number distribution of the gear ring is changed, the corresponding electric signals are collected by the sensor to induce pulse distribution conditions, and then the rotating speed and steering of the motor are obtained by adopting the detection component.
Further, in a specific implementation, in the motor rotation speed steering detection device provided by the embodiment of the invention, the detection component can be specifically used for converting the electric signal collected by the sensor into a corresponding pulse signal, calculating the rotation speed of the motor according to the pulse count and time of the pulse signal, and obtaining the steering of the motor according to the negative pulse distribution corresponding to the position where the missing tooth is located in the pulse signal.
After receiving the electric signal collected by the sensor, the detecting component processes the electric signal and converts the electric signal into a corresponding pulse signal, and the current rotating speed of the motor can be calculated according to the pulse count and the system time; and because the tooth number distribution of the gear ring is asymmetric, the non-equidistant negative pulse distribution generated at the position of the missing tooth during forward and reverse rotation can be changed, and the detection component can calculate the steering of the motor according to the negative pulse distribution.
In a specific implementation, in the motor rotation speed and rotation direction detection device provided by the embodiment of the invention, as shown in fig. 4, the outer ring of the induction gear ring 1 is provided with a first missing tooth 11 and a second missing tooth 12 with different lengths; the distance from the first missing tooth 11 to the second missing tooth 12 in the clockwise direction is not equal to the distance from the first missing tooth 11 to the second missing tooth 12 in the counterclockwise direction.
In practice, as shown in fig. 4, when the outer ring of the induction ring gear 1 has two missing teeth, namely, the first missing tooth 11 and the second missing tooth 12, the lengths of the first missing tooth 11 and the second missing tooth 12 must be different, so that the steering of the motor can be obtained conveniently. In addition, the distance (i.e., the shortest distance) between the first missing tooth 11 and the second missing tooth 12 along the clockwise direction is not equal to the distance (i.e., the longest distance) between the first missing tooth 11 and the second missing tooth 12 along the counterclockwise direction, so that the distribution of the first missing tooth 11 and the second missing tooth 12 on the induction gear ring 1 is asymmetric, and thus the judgment of the motor steering is not affected.
In a specific implementation, in the motor rotation speed and rotation direction detection device provided by the embodiment of the invention, the first missing tooth 11 is formed by milling at least one tooth; the second missing tooth 12 is milled from at least two teeth.
In practice, as shown in fig. 4, the first missing tooth 11 is formed by milling one tooth; the second missing tooth 12 is formed by milling two teeth. Of course, the first missing tooth 11 may be formed by milling two teeth, the second missing tooth 12 may be formed by milling three teeth, or the first missing tooth 11 may be formed by milling three teeth, the second missing tooth 12 may be formed by milling four teeth, and so on. The first missing tooth 11 and the second missing tooth 12 are not limited herein as long as they are different in length.
Further, in a specific implementation, in the above-mentioned motor rotation speed steering detection device provided by the embodiment of the present invention, the detection component may be specifically configured to determine that the motor is turned to the first direction if the first missing tooth signal position corresponding to the first missing tooth 11 occurs and then the second missing tooth signal position corresponding to the second missing tooth 12 occurs in the pulse signal; if the missing tooth signal position corresponding to the second missing tooth 12 appears in the pulse signal, and then the missing tooth signal position corresponding to the first missing tooth 11 appears, the steering direction of the motor is judged to be a second direction opposite to the first direction.
Fig. 5 shows a comparison of a pulse signal provided by an embodiment of the present invention with an existing original signal. As shown in fig. 5, the original signal is a pulse signal obtained by converting an electric signal acquired by a sensor aiming at the existing induction gear ring (the outer ring is provided with a plurality of uniformly distributed teeth); in the Counter-Clockwise rotation (CCW) signal, the position of the missing tooth signal corresponding to the first missing tooth 11 appears firstly, and then the position of the missing tooth signal corresponding to the second missing tooth 12 appears, at this time, the steering direction of the motor is anticlockwise; in the Clockwise rotation (CW) signal of the motor, the corresponding missing tooth signal position of the second missing tooth 12 appears first, and then the corresponding missing tooth signal position of the first missing tooth 11 appears, at this time, the steering direction of the motor is Clockwise.
In a specific implementation, in the motor rotation speed steering detection device provided by the embodiment of the invention, when at least three missing teeth are arranged on the outer ring of the induction gear ring, the lengths of the missing teeth can be set to be different. Therefore, the negative pulse distribution corresponding to the position of the missing tooth is different, and the steering of the motor can be judged according to the different negative pulse distribution.
In a specific implementation, in the motor rotation speed steering detection device provided by the embodiment of the invention, when at least three missing teeth are arranged on the outer ring of the induction gear ring, the length of at least one missing tooth a can be different from the length of other missing teeth b. Therefore, the negative pulse distribution corresponding to the position of at least one missing tooth a is different from the negative pulse distribution corresponding to the positions of other missing teeth b, and the steering of the motor can be judged according to the negative pulse distribution corresponding to the position of at least one missing tooth a and the negative pulse distribution corresponding to the positions of any one missing tooth b.
Based on the same inventive concept, the embodiment of the invention also provides a detection method of the motor rotation speed steering detection device, and because the principle of solving the problem of the method is similar to that of the motor rotation speed steering detection device, the implementation of the method can refer to the implementation of the motor rotation speed steering detection device, and the repetition is omitted.
In specific implementation, the detection method of the motor rotation speed steering detection device provided by the embodiment of the invention, as shown in fig. 6, specifically includes the following steps:
s601, when the induction gear ring rotates along with a motor rotor, a sensor acquires corresponding electric signals; at least two missing teeth are arranged on the outer ring of the induction gear ring; the total distribution of all the missing teeth is asymmetric on the sensing tooth ring.
S602, the detection part processes the electric signals acquired by the sensor to obtain the rotating speed and the steering direction of the motor.
In the detection method of the motor rotation speed steering detection device provided by the embodiment of the invention, the sensor is used for collecting the electric signals generated when the induction gear ring rotates along with the motor rotor to induce pulse distribution, wherein the induction gear ring is provided with at least two missing teeth, the total distribution of all missing teeth is asymmetric on the induction gear ring, and the detection part is used for processing the electric signals collected by the sensor to obtain the rotation speed and steering of the motor, so that the rotation speed of the motor can be detected, the steering of the motor can be detected, and the cost is low.
In a specific implementation, in the detection method of the motor rotation speed and steering detection device provided by the embodiment of the present invention, the processing, by the detection component, the electric signal collected by the sensor to obtain the rotation speed and steering of the motor in step S602 may specifically include: the detection part converts the electric signals acquired by the sensor into corresponding pulse signals, calculates the rotating speed of the motor according to the pulse count and time of the pulse signals, and obtains the steering of the motor according to the negative pulse distribution corresponding to the position of the missing tooth in the pulse signals.
In a specific implementation, in the detection method of the motor rotation speed steering detection device provided by the embodiment of the present invention, when the outer ring of the induction gear ring has a first missing tooth and a second missing tooth with different lengths, the obtaining the steering of the motor according to the negative pulse distribution corresponding to the location of the missing tooth in the pulse signal in the above steps specifically may include: if the negative pulse distribution corresponding to the position of the first missing tooth appears in the pulse signal, and then the negative pulse distribution corresponding to the position of the second missing tooth appears, judging that the steering direction of the motor is the first direction; if the negative pulse distribution corresponding to the position of the second missing tooth appears in the pulse signal, and then the negative pulse distribution corresponding to the position of the first missing tooth appears, the steering direction of the motor is judged to be a second direction opposite to the first direction.
For more specific working procedures of the above steps, reference may be made to the corresponding contents disclosed in the foregoing embodiments, and no further description is given here.
In this specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, so that the same or similar parts between the embodiments are referred to each other. For the method disclosed in the embodiment, since it corresponds to the device disclosed in the embodiment, the description is relatively simple, and the relevant points are referred to the device part description.
Those of skill would further appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the various illustrative elements and steps are described above generally in terms of functionality in order to clearly illustrate the interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
In summary, the motor rotation speed steering detection device provided by the embodiment of the invention comprises: the induction gear ring is provided with at least two missing teeth on the outer ring; the total distribution of all the missing teeth is asymmetric on the induction tooth ring; the sensor is used for collecting corresponding electric signals when the induction gear ring rotates along with the motor rotor; and the detection component is used for processing the electric signals acquired by the sensor to obtain the rotating speed and the steering direction of the motor. According to the motor rotating speed steering detection device, at least two missing teeth are arranged on the induction gear ring, the total distribution of all missing teeth is asymmetric on the induction gear ring, so that tooth number distribution of the gear ring is changed, corresponding electric signals are collected by a sensor to sense pulse distribution conditions, and then the rotating speed and steering of the motor are obtained by adopting a detection part. In addition, the invention also provides a corresponding detection method for the motor rotation speed steering detection device, so that the detection device has more practicability, and the detection method has corresponding advantages.
Finally, it is further noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The motor rotation speed steering detection device and the detection method thereof provided by the invention are described in detail, and specific examples are applied to the description of the principle and the implementation mode of the invention, and the description of the examples is only used for helping to understand the method and the core idea of the invention; meanwhile, as those skilled in the art will have variations in the specific embodiments and application scope in accordance with the ideas of the present invention, the present description should not be construed as limiting the present invention in view of the above.
Claims (10)
1. A motor speed-rotation-direction detecting device, characterized by comprising:
the induction gear ring is provided with at least two missing teeth on the outer ring; the total distribution of all the missing teeth is asymmetric on the induction tooth ring;
the sensor is used for collecting corresponding electric signals when the induction gear ring rotates along with the motor rotor;
and the detection component is used for processing the electric signals acquired by the sensor to obtain the rotating speed and the steering direction of the motor.
2. The motor rotation speed steering detection device according to claim 1, wherein the detection component is specifically configured to convert an electrical signal collected by the sensor into a corresponding pulse signal, calculate the rotation speed of the motor according to the pulse count and time of the pulse signal, and obtain the steering of the motor according to the negative pulse distribution corresponding to the position where the missing tooth is located in the pulse signal.
3. The motor speed-rotation-direction detecting device according to claim 2, wherein the outer ring of the induction ring gear has first missing teeth and second missing teeth with different lengths;
the distance from the first missing tooth to the second missing tooth along the clockwise direction is unequal to the distance from the first missing tooth to the second missing tooth along the anticlockwise direction.
4. A motor speed and rotation direction sensing device according to claim 3, wherein the first missing tooth is formed by milling at least one tooth; the second missing tooth is formed by milling at least two teeth.
5. The motor rotation speed turning detection device according to claim 3, wherein the detection means is specifically configured to determine that the motor turns in the first direction if a negative pulse distribution corresponding to the position where the first missing tooth is located appears first in the pulse signal, and then a negative pulse distribution corresponding to the position where the second missing tooth is located appears; and if the negative pulse distribution corresponding to the position of the second missing tooth appears in the pulse signal, and then the negative pulse distribution corresponding to the position of the first missing tooth appears, judging that the steering direction of the motor is a second direction opposite to the first direction.
6. The motor speed-rotation-direction detecting apparatus according to claim 2, wherein when at least three of the missing teeth are provided on the outer ring of the induction ring gear, the length of each of the missing teeth is different.
7. The motor speed-rotation-direction detecting apparatus according to claim 2, wherein when at least three missing teeth are provided on the outer ring of the induction ring gear, a length of at least one missing tooth is different from a length of other missing teeth.
8. A detection method of a motor rotation speed steering detection apparatus according to any one of claims 1 to 7, comprising:
when the induction gear ring rotates along with the motor rotor, the sensor acquires corresponding electric signals; at least two missing teeth are arranged on the outer ring of the induction gear ring; the total distribution of all the missing teeth is asymmetric on the induction tooth ring;
the detection component processes the electric signals collected by the sensor to obtain the rotating speed and the steering direction of the motor.
9. The method according to claim 8, wherein the detecting means processes the electric signal collected by the sensor to obtain the rotation speed and the rotation direction of the motor, and comprises:
the detection part converts the electric signals acquired by the sensor into corresponding pulse signals, calculates the rotating speed of the motor according to the pulse count and time of the pulse signals, and obtains the steering of the motor according to the negative pulse distribution corresponding to the position of the missing tooth in the pulse signals.
10. The method for detecting a motor rotation speed and rotation direction detecting device according to claim 9, wherein when the outer ring of the induction gear ring has a first missing tooth and a second missing tooth with different lengths, the obtaining the motor rotation direction according to the negative pulse distribution corresponding to the missing tooth position in the pulse signal includes:
if the negative pulse distribution corresponding to the position of the first missing tooth appears in the pulse signal, and then the negative pulse distribution corresponding to the position of the second missing tooth appears, judging that the steering direction of the motor is the first direction;
and if the negative pulse distribution corresponding to the position of the second missing tooth appears in the pulse signal, and then the negative pulse distribution corresponding to the position of the first missing tooth appears, judging that the steering direction of the motor is a second direction opposite to the first direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311209138.8A CN117269531A (en) | 2023-09-18 | 2023-09-18 | Motor rotation speed steering detection device and detection method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311209138.8A CN117269531A (en) | 2023-09-18 | 2023-09-18 | Motor rotation speed steering detection device and detection method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN117269531A true CN117269531A (en) | 2023-12-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311209138.8A Pending CN117269531A (en) | 2023-09-18 | 2023-09-18 | Motor rotation speed steering detection device and detection method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN117269531A (en) |
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2023
- 2023-09-18 CN CN202311209138.8A patent/CN117269531A/en active Pending
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