CN114111687A - Detection method, correction method and rotation system - Google Patents
Detection method, correction method and rotation system Download PDFInfo
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- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
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Abstract
本发明的实施例提供一种检测方法、矫正方法和转动系统，检测方法用于检测转动系统的转动误差，包括如下步骤：控制动力装置驱动负载转动；获取第一转动角度，第一转动角度为动力装置的输出端从转动开始到结束所经过的角度；获取第二转动角度，第二转动角度为负载从转动开始到结束所经过的角度；根据第一转动角度和第二转动角度获取转动系统的转动误差。根据本发明实施例的检测方法、矫正方法和转动系统能够较为准确地检测转动系统的转动误差，以保证转动系统的转动精度。
Embodiments of the present invention provide a detection method, a correction method, and a rotation system. The detection method is used to detect the rotation error of the rotation system, and includes the following steps: controlling a power device to drive a load to rotate; acquiring a first rotation angle, where the first rotation angle is The angle passed by the output end of the power unit from the start to the end of rotation; obtain the second rotation angle, the second rotation angle is the angle passed by the load from the start to the end of rotation; obtain the rotation system according to the first rotation angle and the second rotation angle rotation error. The detection method, the correction method and the rotation system according to the embodiments of the present invention can more accurately detect the rotation error of the rotation system, so as to ensure the rotation accuracy of the rotation system.
Description
Technical Field
The invention relates to the technical field of testing, in particular to a detection method, a correction method and a rotation system.
Background
The rotating system is used for driving a load to rotate, and is one of the systems commonly used in the industry. In some usage scenarios, it is necessary to precisely control the rotation of a load to a predetermined angle, such as a control drum system of a reactor, and there is a risk of an accident if the rotation error thereof is large.
Disclosure of Invention
In view of the above, the present invention has been made to provide a detection method, a correction method and a rotation system that overcome or at least partially solve the above problems.
According to a first aspect of the present invention, there is provided a detection method for detecting a rotation error of a rotating system, the rotating system including: the method comprises the following steps of: controlling the power device to drive the load to rotate; acquiring a first rotation angle, wherein the first rotation angle is an angle which is passed by an output end of the power device from the beginning to the end of rotation; acquiring a second rotation angle, wherein the second rotation angle is an angle which is passed by the load from the beginning to the end of the rotation; and acquiring the rotation error of the rotating system according to the first rotation angle and the second rotation angle.
According to a second aspect of the present invention, there is provided a method of correction, the method comprising the steps of: detecting a rotation error of the rotating system according to the detection method according to the first aspect of the invention; and correcting the rotating system according to the rotating error.
According to a third aspect of the present invention, there is provided a rotary system comprising: a power plant; the transmission structure is connected with the power device; the load is connected with the transmission structure, so that the power device drives the load to rotate through the transmission structure; the first angle sensor is arranged at the output end of the power device; a second angle sensor disposed at the load; and one or more processors configured to perform the steps of: controlling the power device to drive the load to rotate; acquiring a first rotation angle through the first angle sensor, wherein the first rotation angle is an angle which is passed by an output end of the power device from the start to the end of rotation; acquiring a second rotation angle through the second angle sensor, wherein the second rotation angle is an angle which the load passes through from the beginning to the end of rotation; and acquiring the rotation error of the rotating system according to the first rotation angle and the second rotation angle.
According to the detection method, the correction method and the rotating system provided by the embodiment of the invention, the rotating error of the rotating system can be accurately detected so as to ensure the rotating precision of the rotating system.
Drawings
FIG. 1 is a schematic view of a rotational system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a detection method according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a detection method according to another embodiment of the present invention;
FIG. 4 is a schematic diagram of a transmission structure of a rotating system according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a correction method according to an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention. It should be apparent that the described embodiment is one embodiment of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the invention without any inventive step, are within the scope of protection of the invention.
It is to be noted that technical terms or scientific terms used herein should have the ordinary meaning as understood by those having ordinary skill in the art to which the present invention belongs, unless otherwise defined. If the description "first", "second", etc. is referred to throughout, the description of "first", "second", etc. is used only for distinguishing similar objects, and is not to be construed as indicating or implying a relative importance, order or number of technical features indicated, it being understood that the data described in "first", "second", etc. may be interchanged where appropriate. If "and/or" is presented throughout, it is meant to include three juxtapositions, exemplified by "A and/or B" and including either scheme A, or scheme B, or schemes in which both A and B are satisfied. Furthermore, spatially relative terms, such as "above," "below," "top," "bottom," and the like, may be used herein for ease of description to describe one element or feature's spatial relationship to another element or feature as illustrated in the figures, and should be understood to encompass different orientations in use or operation in addition to the orientation depicted in the figures.
According to an embodiment of the present invention, firstly, a detection method is provided for detecting a rotation error of a rotating system, and fig. 1 is a schematic diagram of an embodiment of a rotating system, which may include a power device 10, a transmission structure 20 connected to the power device 10, and a load 30 connected to the transmission structure 20.
The power device 10 may drive the load 30 to rotate through the transmission structure 20, the power device 10 may be a power device such as a motor, an engine, etc., and the power output by the power device 10 may be transmitted to the load 30 through the transmission structure 20 to rotate the load 30. The transmission structure 20 may be, for example, a transmission shaft, a transmission gear, or the like.
In some embodiments, the transmission structure 20 may rotate the load 30 the same angle as the output of the power plant 10. In some embodiments, the transmission structure 20 may cause the load 30 to rotate at a different angle than the output of the power plant 10, for example, the transmission structure 20 may include one or more gears such that when the output of the power plant 10 rotates 1 turn (360 degrees), the load 30 may rotate 2 turns, 2.5 turns, 3 turns, etc., or the load 30 may rotate 0.2 turns, 0.3 turns, 0.5 turns, etc. In some embodiments, the transmission structure 20 may enable the load 30 and the output end of the power device 10 to have the same rotation direction, in some embodiments, the transmission structure 20 may enable the load 30 and the output end of the power device 10 to have different rotation directions, for example, a connection structure such as a universal joint may be included in the transmission structure 20, so that the power output by the power device 10 can be transmitted in a variable angle. It is understood that besides the transmission structure 20 described in the above embodiments, a person skilled in the art may select any other suitable transmission structure to form the rotating system according to actual requirements, and details are not described herein.
The load 30 may be a load to which the rotating system is connected in actual use, i.e., the actual use of the rotating system is completely restored when the rotating system is detected using the detection method of the present invention, in some embodiments, the load connected in actual use of the rotating system may not be conveniently detected, and in such embodiments, the load 30 may be configured to have the same or similar size and/or weight, etc. as the load connected in actual use of the rotating system.
Referring to fig. 2, the detection method according to the embodiment of the present invention includes the steps of:
step S202: controlling a power device to drive a load to rotate;
step S204: acquiring a first rotation angle, wherein the first rotation angle is an angle which is passed by the output end of the power device 10 from the beginning to the end of rotation;
step S206: acquiring a second rotation angle, which is an angle that the load 30 passes through from the start to the end of rotation;
step S208: and acquiring the rotation error of the rotating system according to the first rotation angle and the second rotation angle.
In steps S204 and S206, the first rotation angle may be obtained by an angle sensor or the like, for example, referring to fig. 1, a first angle sensor 41 may be provided at the output end of the power device 10, and a second angle sensor 42 may be provided at the load 30. When acquiring the first rotation angle and the second rotation angle, the readings of the first angle sensor 41 and the second angle sensor 42 may be zeroed before the rotation starts, and the first rotation angle and the second rotation angle may be acquired through the readings after the rotation ends.
In some embodiments, the first rotation angle and the second rotation angle may not be the angle that the rotation starts to pass through, but may be the angle that the output end of the power device 10 and the load 30 rotate within a certain period of time during the rotation, for example, the first rotation angle is the angle that the output end of the power device 10 passes through from t1 to t2, and then the second rotation angle is the angle that the load 30 passes through from t1 to t 2. The skilled person can set the first rotation angle and the second rotation angle in other ways, as long as they can correspond to the same time period.
In step S208, the rotation error of the rotating system is obtained according to the first rotation angle and the second rotation angle, the first rotation angle records the rotation angle of the output end of the power device 10 and actually represents the power output by the power device 10, so that the angle at which the load 30 should rotate in the ideal state can be calculated according to the first rotation angle and the specific transmission structure used, and the second rotation angle represents the actual rotation angle of the load 30, and the difference between the actual rotation angle and the angle at which the load 30 should rotate in the ideal state calculated according to the first rotation angle is the rotation error of the rotating system, so that the rotation error of the rotating system can be obtained according to the first rotation angle and the second rotation angle.
In some embodiments, when the transmission structure 20 rotates the load 30 by the same angle as the output end of the power device 10, the rotation error can be obtained directly according to the difference between the first rotation angle and the second rotation angle, for example, the first rotation angle is δ1The second rotation angle is delta2If the rotation error δ is equal to | δ1-δ2|。
In some embodiments, when the transmission structure 20 makes the rotation angle of the load 30 and the output end of the power device 10 in a desired multiple relationship, for example, when the power device 10 rotates 1 turn, the load 30 rotates 2 turns, that is, the rotation angle of the load 30 is powerWhen the device 10 rotates twice, the first rotation angle and/or the second rotation angle may be converted according to the desired multiple relation, and then the rotation error of the rotating system may be obtained according to the difference between the converted first rotation angle and the converted second rotation angle, for example, the rotation error δ is ═ δ in the above example1-0.5δ2|。
It can be understood that, when designing the rotating system, the power device 10 and the transmission structure 20 can drive any load 30 within the load range thereof and can achieve the same rotating effect, however, in the actual use process, different loads 30 may have a certain influence on the rotating error, and therefore, in the detection method of the embodiment of the present invention, the actual rotating angle of the load 30 is obtained for calculation, and compared with the method for obtaining the rotating angle calculation of the output end of the transmission structure 20, the method is closer to the actual use condition of the rotating system, so as to obtain the rotating error of the rotating system more accurately.
In some embodiments, after the rotation error is obtained, the correction or improvement of the rotation system may be guided according to the rotation error, for example, according to the interval or frequency of the rotation error, the possible cause of the rotation error may be analyzed and the rotation system may be corrected or improved in a targeted manner.
In some embodiments, the rotating system may be operated in a specific working environment, for example, the rotating system may be integrally disposed in a device, or the load 30 may be disposed in a device, so that the detection may be performed in the real working environment of the rotating system to obtain a result more accurately reflecting the real rotating error of the rotating system, and only the angle sensors are disposed at the connection of the power device 10 and the load 30, respectively. In some embodiments, the rotating system may not be provided with an angle sensor, so that the rotating system may be provided in a simulated environment for detection, the simulated environment may simulate the working environment of the rotating system, such as the resistance of the transmission structure 20, the load 30, and the like, during the rotation process, and the simulated environment may also provide only the support for the transmission structure 20, the load 30, and the like, that is, provide a more ideal working environment. Those skilled in the art can select the target according to actual needs, and the details are not described herein.
In some working situations, the load 30 in the rotating system only needs to rotate back and forth within a certain angle range, or the load 30 needs to rotate in the forward direction and the reverse direction, for this reason, in some embodiments, the power device may be controlled to rotate by a predetermined angle in step S202, and a person skilled in the art may select a suitable predetermined angle according to actual test requirements, for example, the rotation angle within the rotation range required by the load 30 is selected as the predetermined angle, and in some embodiments, a certain conversion may be needed to obtain the predetermined angle (for example, when the rotation angle of the power device 10 is proportional to the rotation angle of the load 30) according to the rotation angle required by the load 30. The predetermined angle may also include a direction, for example, the predetermined angle may be a clockwise rotation or a counterclockwise rotation from a certain position, and the use of the predetermined angle to perform the targeted detection of the rotation system can obtain a more accurate rotation error detection result.
In some embodiments, referring to fig. 3, in step S302, the power plant is controlled to rotate by a predetermined angle; in step S304, a first rotation angle is acquired; then, in step S306, a difference between the first rotation angle and the predetermined angle is calculated, when the difference is greater than a first preset threshold, the control device of the power system may be corrected in step S308, and then the power device is controlled again to drive the load to rotate by the predetermined angle, and when the difference is less than or equal to the first preset threshold, a second rotation angle may be obtained in step S310, and a rotation error may be obtained from the first rotation angle and the second rotation angle in step S301.
In conjunction with the above related contents, the first rotation angle and the second rotation angle respectively come from the output end of the power device 10 and the load 30, and represent rotation errors caused by losses occurring in the process of transmitting the power output by the power device 10 to the load 30. However, in actual operation, the power device 10 may not output the desired power according to the control command, so that the load 30 cannot rotate to the desired angle. For this reason, in the present embodiment, a difference between the first rotation angle and the predetermined angle may be calculated, and when the difference is greater than the first preset threshold, it means that the power plant 10 cannot output the desired power according to the control command, and therefore, a certain correction may be required for the control device of the power plant 10, and after the correction is completed, the subsequent detection is performed. The first preset threshold actually reflects the accuracy of the control command of the power plant 10, and can be set by those skilled in the art according to actual needs, which will not be described in detail.
In some embodiments, in order to ensure the accuracy of the test result, the power device may be controlled to drive the load to rotate for multiple times, and after each rotation is finished, a rotation error is obtained according to the first rotation angle and the second rotation angle obtained in the current rotation, so that multiple rotation errors will be obtained. The detection method may further include determining the rotation accuracy of the rotating system according to the plurality of rotation errors, for example, the rotation accuracy of the rotating system may be determined by taking an average or a weighted average of the plurality of rotation errors, and the rotation accuracy may reflect the accuracy of the rotating system as a whole.
It will be appreciated that, in addition to controlling the power plant to make a plurality of rotations, a plurality of first rotation angles and a plurality of second rotation angles may be obtained during one rotation, for example, t1, t2, t3 … t may be obtained during a rotationnAnd then calculating a rotation error according to the first rotation angle and the second rotation angle obtained at each moment. The first rotation angle and the second rotation angle acquired at a certain time may be the rotation angle from the start of rotation to the time, and may be acquired by directly reading at the time, or may be the rotation angle between the previous time and the time, for example, the first rotation angle and the second rotation angle acquired at time t2 are the rotation angles in the time period t1-t2, and may be acquired by the difference between the reading at the time and the reading at the previous time. The skilled person can set up to obtain a plurality of rotation errors according to actual requirements, inThis will not be described in detail.
In some embodiments, when the power means is controlled to drive the load through a plurality of rotations, each rotation may be through the same angle. For example, each time the power device rotates 20 degrees, so that the rotating precision of the power device at the rotating angle can be more accurately obtained. In some embodiments, each rotation may be a different angle, so as to obtain the rotation accuracy of the power device in different working ranges.
In some embodiments, referring to fig. 4, the transmission structure 20 may include a transmission shaft 21 connected to the power unit 10, and a rotation shaft 22 connected to the transmission shaft 21 and the load 30. In some embodiments, the transmission structure 20 may further include a universal joint 23 for connecting the transmission shaft 21 and the rotation shaft 22 and changing the power direction. In some embodiments, the drive structure 20 may also include other structures, such as more drive shafts.
It can be understood that the first rotation angle and the second rotation angle can only detect the rotation error occurring in the transmission process of the power output by the power device 10 from the transmission structure 20 to the load 30, and it cannot detect the specific location where the rotation error occurs, and in the case that the transmission structure 20 is complicated in the above embodiment, it is desirable to further clarify the location where the rotation error occurs so as to correct the rotation error accordingly.
To this end, in some embodiments, the detection method further comprises: a third rotation angle, which is an angle of the transmission shaft 21 from the start to the end of rotation, and a fourth rotation angle, which is an angle of the rotation shaft 22 from the start to the end of rotation, are obtained. When the rotation error is greater than the second preset threshold value, that is, when the rotation system has a large rotation error, the position where the rotation error occurs can be further determined according to the first rotation angle, the second rotation angle, the third rotation angle and the fourth rotation angle. The second preset threshold may be set by a person skilled in the art according to the precision requirement of the rotating system in actual work, and will not be described herein.
Specifically, whether a rotation error occurs between the power device and the transmission shaft 21 may be determined according to the third rotation angle and the first rotation angle, the principle is similar to that of calculating a rotation error of the rotation system according to the first rotation angle and the second rotation angle described above, an angle that the transmission shaft 21 should rotate in an ideal state may be obtained according to the first rotation angle and the connection manner between the transmission shaft 21 and the output end of the power device 10, the third rotation angle is an actual rotation angle of the transmission shaft 21, and an excessively large difference value indicates that a rotation error occurs in the process.
Similarly, it is possible to determine whether a rotation error occurs between the transmission shaft 21 and the rotation shaft 22 based on the third rotation angle and the fourth rotation angle, and it is possible to determine whether a rotation error occurs between the rotation shaft 22 and the load based on the fourth rotation angle and the second rotation angle. And will not be described in detail herein.
In such embodiments, the position where the rotation error occurs may be refined, thereby facilitating the analysis of the position where the rotation error occurs by those skilled in the art for further correction and improvement of the rotation system. It will be appreciated that if more drive shafts or other similar structures are included in the drive structure 20, or other structures are included in the rotational system, the rotational angles of these components may be further obtained to refine the location where the rotational error occurs.
In some embodiments, when the position where the rotation error occurs is determined, the cause of the rotation error may also be detected.
In some embodiments, when it is determined that a rotation error occurs between the power unit 10 and the transmission shaft 21, a mounting angle and/or a mounting gap between the power unit 10 and the transmission shaft 21 may be detected, and it is understood that if the mounting angle between the power unit 10 and the transmission shaft 21 deviates from a predetermined angle or an unreasonable mounting gap exists, it may be a main cause of the occurrence of the rotation error, and a person skilled in the art may perform a targeted correction based on the detection result. Similarly, in some embodiments, the mounting angle and/or mounting clearance between rotating shaft 22 and load 30 may also be detected when determining that a rotational error has occurred between rotating shaft 22 and load 30.
In some embodiments, when it is determined that a rotation error occurs between the transmission shaft 21 and the rotation shaft 22, the coaxiality and/or the straightness of the transmission shaft 21 and the rotation shaft 22 may be detected, for example, in some embodiments, when the transmission shaft 21 and the rotation shaft 22 need to be coaxially arranged, if an angular deviation of the two shafts in actual installation is excessively large, the occurrence of the rotation error may be caused, or if the transmission shaft 21 and/or the rotation shaft 22 are bent due to machining or the like, the occurrence of the rotation error may be caused, and for this reason, the coaxiality, the straightness or the like of the transmission shaft 21 and the rotation shaft 22 may be detected to determine the occurrence of the rotation error.
In the above embodiments, after determining the location of the rotation error, an exemplary detection method is provided to detect the specific cause of the rotation error, so as to guide further improvement or correction, and those skilled in the art may use a related measurement device to complete the detection, and meanwhile, those skilled in the art may add related detection items according to the cause that may cause the rotation error to occur in the actually used rotation system, so as to more comprehensively judge the cause of the rotation error.
There is also provided, in accordance with an embodiment of the present invention, a method for correcting a rotational error of a rotating system, the method including: detecting a rotation error of a rotating system according to the detection method as described in any of the above embodiments; and correcting the rotating system according to the rotating error.
As described above, in some embodiments, the cause of the error may be analyzed and the rotating system may be corrected according to the value of the rotating error, the operating interval and frequency of occurrence, etc. In some embodiments, the detection method may further detect the location and possible cause of the rotation error, so that the rotation system may be further corrected for the location and cause. The specific implementation details refer to the description of the relevant parts above, and are not repeated herein.
There is also provided, in accordance with an embodiment of the present invention, a rotary system, including: a power plant; the transmission structure is connected with the power device; the load is connected with the transmission structure, so that the power device drives the load to rotate through the transmission structure; the first angle sensor is arranged at the output end of the power device; a second angle sensor disposed at the load; and one or more processors configured to perform the steps of: controlling a power device to drive a load to rotate; acquiring a first rotation angle through a first angle sensor, wherein the first rotation angle is an angle which is passed by an output end of the power device from the beginning to the end of rotation; acquiring a second rotation angle through a second angle sensor, wherein the second rotation angle is an angle which is passed by the load from the beginning to the end of rotation; and acquiring the rotation error of the rotating system according to the first rotation angle and the second rotation angle.
The rotating system according to the embodiment of the invention can be a rotating system specially used for testing or a rotating system actually used. The rotating system provided by the embodiment of the invention can accurately detect the self rotating error and give the rotating error after each rotating task is finished, so that related workers are reminded to perform corresponding adjustment in time. In some embodiments, the one or more controllers may be further configured to issue an alert when the rotational error is greater than a preset threshold.
In some embodiments, the transmission structure may include a transmission shaft connected to the power device, and a rotation shaft connected to the transmission shaft and the load, the transmission shaft may be provided with a third angle sensor, the rotation shaft may be provided with a fourth angle sensor, and the one or more processors may further determine a position where the rotation error occurs according to data of each angle sensor when the rotation error is greater than a preset threshold, so as to remind a relevant worker to correct the rotation error. The specific implementation details can refer to the description of the relevant parts above, and are not repeated herein.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (15)
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Application publication date: 20220301 |