CN112326124A - Control method and control device for dynamic balance of automobile transmission shaft and storage medium - Google Patents
Control method and control device for dynamic balance of automobile transmission shaft and storage medium Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M1/00—Testing static or dynamic balance of machines or structures
- G01M1/14—Determining imbalance
- G01M1/16—Determining imbalance by oscillating or rotating the body to be tested
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M1/00—Testing static or dynamic balance of machines or structures
- G01M1/30—Compensating imbalance
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Abstract
The invention discloses a control method and a control device for dynamic balance of an automobile transmission shaft and a storage medium. The control method comprises the following steps: s1, controlling the automobile to run according to the preset speed, detecting the vibration signal of the transmission shaft, extracting the vibration component a caused by the unbalance of the transmission shaft in the vibration signal0(ii) a S2, trisecting the section circle of the transmission shaft at the position needing to be moved to balance, sequentially installing mass blocks with preset weight at the three equi-dividing points, and extracting the vibration component a caused by unbalance of the transmission shaft after the mass blocks are installed at the points according to the method of the step S11、a2And a3(ii) a S3, according to a0、a1、a2And a3The dynamic balance point M and the unbalanced mass delta M of the section of the transmission shaft at the position needing dynamic balance are determined, and the mass block with the mass delta M is installed at the point M to realize the dynamic balance of the transmission shaft. The method can quickly, simply and conveniently determine the dynamic balance point and the unbalanced mass of the automobile transmission shaft, and is simple and low in cost.
Description
Technical Field
The present invention relates to automotive technology, and in particular, to a method and an apparatus for controlling dynamic balance of an automotive transmission shaft, and a storage medium.
Background
The transmission shaft of the automobile is mainly used for a four-wheel drive or a rear drive vehicle, and the power generated by the engine is transmitted to the rear shaft of the vehicle through the transmission shaft to drive the vehicle to run. Meanwhile, the transmission shaft is used as a part rotating at a high speed in the running process of the vehicle, if the dynamic balance control is not good, large unbalanced mass eccentricity exists, obvious unbalanced force changing along with the rotating speed of the transmission shaft is generated, and then vibration noise is generated, so that the quality of the vehicle is influenced.
In order to solve the problem of vibration noise caused by dynamic balance of a transmission shaft of a vehicle, the unbalance of the transmission shaft can be reduced by carrying out dynamic balance processing on the transmission shaft, and then the vibration noise is reduced or eliminated.
In the prior art, in order to obtain the size and the position of the unbalance amount of the transmission shaft and compensate the unbalance amount, the transmission shaft can be disassembled and sent back to a manufacturer, and a relatively accurate test result can be obtained only by adopting a special dynamic balancing machine and special clamp equipment for the transmission shaft. However, the special dynamic balancing machine and the clamp are very expensive, and the cost of sending back to a manufacturer for dynamic balancing treatment is very high, so that when the dynamic balance of the transmission shaft exceeds the standard, the transmission shaft is often directly replaced by a new transmission shaft.
Disclosure of Invention
In order to solve the technical problem, the invention provides a control method, a control device and a storage medium for dynamic balance of an automobile transmission shaft.
In a first aspect, an embodiment of the present invention provides a method for controlling a dynamic balance of an automobile transmission shaft, including the following steps:
s1, controlling the automobile to run according to the preset speed, detecting the vibration signal of the transmission shaft, extracting the vibration component a caused by the unbalance of the transmission shaft in the vibration signal0；
S2, trisecting the section circle of the transmission shaft at the position needing action balance, wherein three bisecting points are A, B, C;
a mass block of a predetermined weight is installed at the point a, and a vibration component a due to unbalance of the drive shaft after the mass block is installed at the point a is extracted according to the method of step S11；
A mass block of a predetermined weight is installed at the point B, and a vibration component a due to unbalance of the drive shaft after the mass block is installed at the point B is extracted according to the method of step S12；
A mass block of a predetermined weight is installed at the point C, and a vibration component a due to unbalance of the drive shaft after the mass block is installed at the point C is extracted according to the method of step S13；
S3, according to a0、a1、a2And a3The dynamic balance point M and the unbalanced mass delta M of the section of the transmission shaft at the position needing dynamic balance are determined, and the mass block with the mass delta M is installed at the point M to realize the dynamic balance of the transmission shaft.
Optionally, step S3 specifically includes:
r with point O as center0Making a circle with radius, trisecting the circle, and setting r as three bisected points A ', B ' and C ' respectively0：ri：r2：r3＝a0：a1：a2：a3At point A ', with A' as the center, r1Making a circle with radius, at the point B ', using B' as the center of the circle, r2Making a circle with radius, at the point C ', using C' as the center of the circle, r3Making a circle with radius, wherein the circle with A ' as the center of a circle, the circle with B ' as the center of a circle and the circle with C ' as the center of a circle intersect at a point M, and the point M is a dynamic balance point of the section of the transmission shaft at the position needing to be dynamically balanced;
setting the length of the line segment OM as r, and the unbalanced mass Deltam of the section of the transmission shaft at the position needing dynamic balance as follows: Δ m ═ m0r0R; wherein m is0The initial unbalance mass of the transmission shaft is determined according to the mass of the transmission shaft.
Optionally, in step S1, the vibration frequency of the transmission shaft due to dynamic balance at a predetermined rotation speed is set to h, a0Is the vibration component at the vibration frequency h.
Optionally, let the speed of the transmission shaft be n0Then h is n0/60。
Optionally, the predetermined vehicle speed is 80-120km/h in step S1, and the predetermined weight is 8-12g in step S2.
Optionally, step S1 is preceded by the step of:
and S, mounting a vibration detection device around the section of the automobile at the position where the transmission shaft needs to be dynamically balanced.
Optionally, m0The value of (b) is 0.05-0.15% of the mass of the transmission shaft.
Optionally, m0Taking 0.1 percent of the mass of the transmission shaft.
In a second aspect, an embodiment of the present invention provides a control apparatus, including:
one or more processors;
a memory for storing one or more programs;
when the one or more programs are executed by the one or more processors, the one or more processors are caused to implement the method for controlling dynamic balance of a vehicle transmission shaft as described above.
In a third aspect, an embodiment of the present invention provides a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to implement the method for controlling the dynamic balance of the transmission shaft of the automobile.
The invention has the advantages that: the vibration components at three equal points on a section circle of the transmission shaft at the position needing dynamic balance are detected only by a simple vibration detection device, namely the dynamic balance point M and the unbalanced mass delta M of the section of the transmission shaft at the position needing dynamic balance can be determined by the vibration components, and the dynamic balance of the transmission shaft can be realized by installing a mass block with the mass delta M at the point M.
Drawings
FIG. 1 is a block flow diagram of a method for controlling dynamic balance of an automotive transmission shaft according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a propeller shaft according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of section F-F of FIG. 2 in accordance with the present invention;
fig. 4 is a schematic diagram of a mapping method for determining a dynamic balance point M and an unbalanced mass Δ M according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Example one
The embodiment provides a method for controlling dynamic balance of an automobile transmission shaft, as shown in fig. 1, the method for controlling dynamic balance of the automobile transmission shaft includes the following steps:
s100, controlling the automobile to run according to a preset speed, detecting a vibration signal of a transmission shaft, and extracting a vibration component a caused by unbalance of the transmission shaft in the vibration signal0。
Specifically, the vibration of the transmission shaft may be detected by a vibration detection device, and the vibration detection device may employ a vibration acceleration sensor. A vibration acceleration sensor is arranged on the periphery of a section of the automobile, which is positioned at the position where the dynamic balance of a transmission shaft is needed, and then the automobile runs according to a preset speed, wherein the preset speed can be 80-120km/h for example. In the driving process, a vibration acceleration sensor is used for detecting a vibration signal of a transmission shaft, and a vibration component a caused by unbalance of the transmission shaft in the vibration signal is extracted0Vibration component a due to unbalance of the propeller shaft0The vibration component of the transmission shaft under the vibration frequency caused by dynamic balance under the preset vehicle speed is set as h, and then the vibration component a is set as0Is the vibration component a at the vibration frequency h0. Let the rotation speed of the transmission shaft at a preset vehicle speed be n0Then h is n0/60, due to n0Has the unit of r/min, 1 minute is 60 seconds, so n is0Divided by 60.
As shown in fig. 1, the method for controlling the dynamic balance of the transmission shaft of the automobile further comprises the following steps:
s200, trisecting the section circle of the transmission shaft at the position needing action balance, wherein three bisecting points are A, B, C;
a mass block of a predetermined weight is installed at the point a, and a vibration component a due to unbalance of the drive shaft after the mass block is installed at the point a is extracted according to the method of step S11；
A mass block of a predetermined weight is installed at the point B, and a vibration component a due to unbalance of the drive shaft after the mass block is installed at the point B is extracted according to the method of step S12；
A mass block of a predetermined weight is installed at the point C, and a vibration component a due to unbalance of the drive shaft after the mass block is installed at the point C is extracted according to the method of step S13。
Specifically, fig. 2 is a schematic structural view of a transmission shaft in an embodiment of the present invention, fig. 3 is a schematic sectional view of a section F-F in fig. 2, and as shown in fig. 2 and fig. 3, a sectional circle of a position where the transmission shaft needs to be moved into equilibrium is divided into three equal divisions, which are divided into points a, B and C in fig. 3, and it can be understood that central angles corresponding to an arc AB, an arc AC and an arc BC are all 120 °. A mass of a predetermined weight is sequentially installed at a point A, B, C, and a vibration component a due to unbalance of a drive shaft after the mass is installed at the point is extracted according to the method of step S1001. The predetermined weight is typically 8-12g, with a 10g mass being used in the present invention.
It will be appreciated that the masses are mounted at points a, B and C individually, and not simultaneously, for example when the mass is mounted at point a, there is no mass mounted at points B and C. In addition, point A, B is the same mass as the mass mounted at C, and preferably the same mass is used to ensure accuracy of the test results.
As shown in fig. 1, the method for controlling the dynamic balance of the transmission shaft of the automobile further comprises the following steps:
s300, according to a0、a1、a2And a3To determine the propeller shaftAnd mounting a mass block with the mass delta M at the point M to realize the dynamic balance of the transmission shaft at a dynamic balance point M and an unbalanced mass delta M of the section of the position needing dynamic balance.
According to a0、a1、a2And a3The method is simple and low in cost, and the mass block with the mass as the balance mass delta M is added at the dynamic balance point M after the dynamic balance point M and the unbalanced mass delta M are determined, so that a new transmission shaft does not need to be replaced or the transmission shaft is sent back to a factory for testing, and the cost is reduced.
Referring to fig. 4, step S300 specifically includes:
using point 0 as center of circle, r0Making a circle with radius, trisecting the circle, and setting r as three bisected points A ', B ' and C ' respectively0：r1：r2：r3＝a0：a1：a2：a3At point A ', with A' as the center, r1Making a circle with radius, at the point B ', using B' as the center of the circle, r2Making a circle with radius, at the point C ', using C' as the center of the circle, r3Making a circle with radius, wherein the circle with A ' as the center of a circle, the circle with B ' as the center of a circle and the circle with C ' as the center of a circle intersect at a point M, and the point M is a dynamic balance point of the section of the transmission shaft at the position needing to be dynamically balanced;
setting the length of the line segment OM as r, and the unbalanced mass Deltam of the section of the transmission shaft at the position needing dynamic balance as follows: Δ m ═ m0r0R; wherein m is0The initial unbalance mass of the transmission shaft is determined according to the mass of the transmission shaft.
Specifically, in step S100, a vibration component a caused by unbalance of the propeller shaft is extracted0Vibration component a caused by unbalance of transmission shaft after mass block is installed at point A1Vibration component a caused by unbalance of transmission shaft after mass block is installed at point B2And vibration component a due to unbalance of transmission shaft after mounting mass block at point C3Then, as shown in fig. 4, the dynamic balance point M and the unevenness of the propeller shaft can be determined by a mapping methodThe balance mass Δ m. Referring to FIG. 4, r is a circle centered at point 00Is a radius of a circle, r0The size of (d) can be arbitrarily selected, and the circle is trisected, and the trisected points are respectively a ', B', and C ', and the points a', B ', and C' can be understood as respectively corresponding to the points A, B, C shown in fig. 3. As shown in FIG. 4, r is centered at point A 'with A' as the center1Making a circle with radius, at the point B ', using B' as the center of the circle, r2Making a circle with radius, at the point C ', using C' as the center of the circle, r3Is a radius of a circle, wherein r0：r1：r2：r3＝a0：a1：a2：a3That is to say r1＝r0a1/a0，r2＝r0a2/a0，r3＝r0a3/a0Due to r0Is known, so can be according to r0Determining r1、r2And r3R with A' as the center of circle1A circle with radius, B' as the center of the circle, r2A circle with radius and with C' as the center, r3The circle with radius is intersected at a point M, namely a dynamic balance point of the section of the transmission shaft at the position needing dynamic balance. Connecting point O and point M, and setting the length of line segment OM as r, the unbalanced mass Δ M of the section of the transmission shaft at the position needing dynamic balance is as follows: Δ m ═ m0r0R; wherein m is0For the initial unbalance mass of the drive shaft, the value of which is determined on the basis of the mass of the drive shaft, typically m0The value of (b) is 0.05-0.15% of the mass of the drive shaft, and in one embodiment, m is0Taking 0.1% of the mass of the transmission shaft, if the automobile is a passenger car, then m010g of the crude oil is generally taken.
As shown in FIG. 4, the dynamic balance point is M and the unbalanced mass is M0That is, a mass having a weight Δ M needs to be added at the point M to complete the dynamic balance of the transmission shaft on the balance plane, but the point M is inside the circle and corresponds to the point M in the cross-sectional circle shown in fig. 3, and the mass cannot be added inside the transmission shaft in actual operation, so that the intersection point of OM and the circumference is taken as the dynamic balance point in actual operation.
Example two
The second embodiment of the present invention further provides a control device, and components of the control device may include but are not limited to: a vibration detection device, one or more processors, and a memory.
The vibration detection device is used for detecting a vibration signal of an automobile transmission shaft, and the memory is used as a computer readable storage medium and can be used for storing a software program, a computer executable program and modules, such as program instructions corresponding to the control method of the dynamic balance of the automobile transmission shaft in the embodiment of the invention. The processor realizes the control method of the dynamic balance of the automobile transmission shaft by running the software program, the instructions and the modules stored in the memory.
The memory can mainly comprise a program storage area and a data storage area, wherein the program storage area can store an operating system and an application program required by at least one function; the storage data area may store data created according to the use of the terminal, and the like. Further, the memory may include high speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other non-volatile solid state storage device.
EXAMPLE III
The third embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the method for controlling dynamic balance of an automobile transmission shaft, where the method for controlling dynamic balance of an automobile transmission shaft includes:
s100, controlling the automobile to run according to a preset speed, detecting a vibration signal of a transmission shaft, and extracting a vibration component a caused by unbalance of the transmission shaft in the vibration signal0；
S200, trisecting the section circle of the transmission shaft at the position needing action balance, wherein three bisecting points are A, B, C;
a mass block of a predetermined weight is installed at the point a, and a vibration component a due to unbalance of the drive shaft after the mass block is installed at the point a is extracted according to the method of step S11；
Mounting a mass of predetermined weight at point BExtracting a vibration component a caused by unbalance of the drive shaft after the mass block is installed at the point B according to the method of the step S12；
A mass block of a predetermined weight is installed at the point C, and a vibration component a due to unbalance of the drive shaft after the mass block is installed at the point C is extracted according to the method of step S13；
S300, according to a0、a1、a2And a3The dynamic balance point M and the unbalanced mass delta M of the section of the transmission shaft at the position needing dynamic balance are determined, and the mass block with the mass delta M is installed at the point M to realize the dynamic balance of the transmission shaft.
Of course, the embodiment of the present invention provides a computer-readable storage medium, and the computer-executable instructions thereof are not limited to the operations of the method described above, and may also perform related operations in the control method for dynamic balance of a vehicle transmission shaft provided in any embodiment of the present invention.
From the above description of the embodiments, it is obvious for those skilled in the art that the present invention can be implemented by software and necessary general hardware, and certainly, can also be implemented by hardware, but the former is a better embodiment in many cases. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which can be stored in a computer-readable storage medium, such as a floppy disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a FLASH Memory (FLASH), a hard disk or an optical disk of a computer, and includes several instructions for enabling a computer device (which may be a personal computer, a server, or a network device) to execute the methods according to the embodiments of the present invention.
In the above embodiment, each included unit and module is only divided according to functional logic, but is not limited to the above division as long as the corresponding function can be realized; in addition, specific names of the functional units are only for convenience of distinguishing from each other, and are not used for limiting the protection scope of the present invention.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A control method for the dynamic balance of an automobile transmission shaft is characterized by comprising the following steps:
s1, controlling the automobile to run according to the preset speed, detecting the vibration signal of the transmission shaft, extracting the vibration component a caused by the unbalance of the transmission shaft in the vibration signal0；
S2, trisecting the section circle of the transmission shaft at the position needing action balance, wherein three bisecting points are A, B, C;
a mass block of a predetermined weight is installed at the point a, and a vibration component a due to unbalance of the drive shaft after the mass block is installed at the point a is extracted according to the method of step S11；
A mass block of a predetermined weight is installed at the point B, and a vibration component a due to unbalance of the drive shaft after the mass block is installed at the point B is extracted according to the method of step S12；
A mass block of a predetermined weight is installed at the point C, and a vibration component a due to unbalance of the drive shaft after the mass block is installed at the point C is extracted according to the method of step S13；
S3, according to a0、a1、a2And a3The dynamic balance point M and the unbalanced mass delta M of the section of the transmission shaft at the position needing dynamic balance are determined, and the mass block with the mass delta M is installed at the point M to realize the dynamic balance of the transmission shaft.
2. The method for controlling the dynamic balance of the automobile transmission shaft according to claim 1, wherein the step S3 specifically comprises:
r with point O as center0Making a circle with radius, trisecting the circle, and setting r as three bisected points A ', B ' and C ' respectively0：r1：r2：r3＝a0：a1：a2：a3At point A ', with A' as the center, r1Making a circle with radius, at the point B ', using B' as the center of the circle, r2Making a circle with radius, at the point C ', using C' as the center of the circle, r3Making a circle with radius, wherein the circle with A ' as the center of a circle, the circle with B ' as the center of a circle and the circle with C ' as the center of a circle intersect at a point M, and the point M is a dynamic balance point of the section of the transmission shaft at the position needing to be dynamically balanced;
setting the length of the line segment OM as r, and the unbalanced mass Deltam of the section of the transmission shaft at the position needing dynamic balance as follows: Δ m ═ m0r0R; wherein m is0The initial unbalance mass of the transmission shaft is determined according to the mass of the transmission shaft.
3. The method for controlling the dynamic balance of a vehicular drive shaft according to claim 1, wherein in step S1, the vibration frequency of the drive shaft due to the dynamic balance at the predetermined rotational speed is set to h, a0Is the vibration component at the vibration frequency h.
4. The method for controlling the dynamic balance of a vehicular drive shaft according to claim 3, wherein the rotational speed of the drive shaft is set to n0Then h is n0/60。
5. The method as claimed in claim 1, wherein the predetermined vehicle speed is 80-120km/h in step S1 and the predetermined weight is 8-12g in step S2.
6. The method for controlling the dynamic balance of the automobile transmission shaft according to claim 1, wherein step S1 is preceded by the step of:
and S, mounting a vibration detection device around the section of the automobile at the position where the transmission shaft needs to be dynamically balanced.
7. The method for controlling the dynamic balance of an automotive driveshaft according to claim 2, characterized in that m0The value of (b) is 0.05-0.15% of the mass of the transmission shaft.
8. The method for controlling the dynamic balance of an automotive driveshaft according to claim 2, characterized in that m0Taking 0.1 percent of the mass of the transmission shaft.
9. A control device, characterized in that the control device comprises:
one or more processors;
a memory for storing one or more programs;
when executed by the one or more processors, cause the one or more processors to implement the method of controlling dynamic balance of a vehicle driveline as recited in any one of claims 1-8.
10. A computer-readable storage medium, on which a computer program is stored, which program, when being executed by a processor, is adapted to carry out a method for controlling the dynamic balance of a vehicle drive shaft according to any one of claims 1 to 8.
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| CN114813116A (en) * | 2022-04-07 | 2022-07-29 | 中国第一汽车股份有限公司 | Dynamic balance sensitivity test analysis method for passenger car transmission system |
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| CN113588167A (en) * | 2021-07-13 | 2021-11-02 | 一汽奔腾轿车有限公司 | Indirect monitoring method for dynamic balance of automobile tire |
| CN114813116A (en) * | 2022-04-07 | 2022-07-29 | 中国第一汽车股份有限公司 | Dynamic balance sensitivity test analysis method for passenger car transmission system |
| CN114813116B (en) * | 2022-04-07 | 2024-06-11 | 中国第一汽车股份有限公司 | Dynamic balance sensitivity test analysis method for passenger car transmission system |
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