CN112285113A - Macroscopic defect inspection machine - Google Patents
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Abstract
The application discloses macroscopic defect inspection machine belongs to defect inspection technical field. The application discloses macroscopic defect inspection machine includes light source, first motion and second motion, and wherein, one side of light source is connected to first motion, and the opposite side of light source is connected to the second motion, can drive the light source and move, realizes the switching between the different light sources. Moreover, the first movement mechanism and the second movement mechanism are mutually independent and are respectively used for controlling the movement of the light source, so that the movement speeds of the first movement mechanism and the second movement mechanism for controlling the light source can be respectively adjusted, the movement speeds of the first movement mechanism and the second movement mechanism which are respectively positioned at two sides of the light source are close to or consistent with each other, the movement speed of the light source in the macro defect inspection machine provided by the application is stable, the alarming or downtime probability of the macro defect inspection machine can be further reduced, and the defect inspection efficiency is improved.
Description
Technical Field
The application relates to the technical field of defect inspection, in particular to a macroscopic defect inspection machine.
Background
In the manufacturing process of the intelligent device, the intelligent device is usually required to be placed on a macroscopic defect inspection machine for inspection so as to judge whether defects exist. The macro defect inspection machine is usually provided with different light sources, which are suitable for different inspection items, so that the macro defect inspection machine needs to be switched among different light sources. However, when the existing macro defect inspection machine switches the light source, the movement speed of the light source is unstable, which causes the blocking in the stretching process, thereby causing the macro defect inspection machine to alarm or crash, and reducing the defect inspection speed.
Disclosure of Invention
The technical problem that this application mainly solved provides a macroscopic defect inspection machine, can make the velocity of motion of light source stable to reduce the probability that macroscopic defect inspection machine reported to the police or shut down.
In order to solve the technical problem, the application adopts a technical scheme that:
provided is a macro defect inspection machine including:
a light source;
the first motion mechanism is connected with one side of the light source;
the second motion mechanism is connected with the other side of the light source;
the first motion mechanism and the second motion mechanism are independent of each other and are respectively used for controlling the motion of the light source.
The first movement mechanism comprises a first air cylinder and a first telescopic part, and the first air cylinder is used for controlling the first telescopic part to stretch; the second motion mechanism comprises a second cylinder and a second telescopic part, and the second cylinder is used for controlling the second telescopic part to stretch.
Wherein the macro defect inspection machine further comprises: and the first distance sensor and the second distance sensor are respectively arranged on the first movement mechanism and the second movement mechanism and are respectively used for acquiring a first movement distance and a second movement distance of the first movement mechanism and the second movement mechanism for controlling the movement of the light source.
Wherein the macro defect inspection machine further comprises: and the control device is coupled to the first motion mechanism, the second motion mechanism, the first distance sensor and the second distance sensor, and is used for controlling the first motion mechanism and the second motion mechanism according to the first motion distance and the second motion distance respectively so as to adjust the motion speed of the light source controlled by the first motion mechanism and/or the second motion mechanism, so that the absolute value of the distance difference value between the first motion distance and the second motion distance is within a distance difference threshold range.
The control device comprises a distance acquisition module, a distance judgment module and a speed adjustment module; the distance acquisition module is used for periodically acquiring the first movement distance and the second movement distance; the distance judgment module is used for acquiring the distance difference value and the absolute value of the distance difference value and judging the absolute value of the distance difference value and the magnitude of the distance difference threshold; the speed adjusting module is used for adjusting the first motion mechanism and/or the second motion mechanism to control the motion speed of the light source when the absolute value of the distance difference value is larger than or equal to the distance difference threshold value, so that the absolute value of the distance difference value is within the range of the distance difference threshold value.
Wherein the macro defect inspection machine further comprises: and the first speed sensor and the second speed sensor are respectively arranged on the first movement mechanism and the second movement mechanism and are respectively used for acquiring a first speed and a second speed of the first movement mechanism and the second movement mechanism for controlling the movement of the light source.
The control device is further coupled to the first speed sensor and the second speed sensor, and configured to control the first motion mechanism and the second motion mechanism according to the first speed and the second speed, respectively, on the premise that the absolute value of the distance difference is smaller than the distance difference threshold, so that the absolute value of the speed difference between the first speed and the second speed is within a speed difference threshold range.
The control device also comprises a speed acquisition module and a speed judgment module; the speed acquisition module is used for periodically acquiring the first speed and the second speed; the speed judging module is used for acquiring the speed difference value and the absolute value of the speed difference value; the speed adjustment module is further configured to adjust the first speed of the first motion mechanism and/or the second speed of the second motion mechanism when the absolute value of the speed difference value is greater than or equal to the speed difference threshold value, so that the absolute value of the speed difference value is within the speed difference threshold range.
Wherein the control device is a proportional-integral-derivative controller.
The first motion mechanism and the second motion mechanism both comprise a first limiting piece and a second limiting piece, and the first limiting piece and the second limiting piece are used for limiting the light source to reciprocate between a first position and a second position.
The beneficial effect of this application is: be different from prior art's characteristic, the macroscopic defect inspection machine that this application provided includes light source, first motion and second motion, and wherein, one side of light source is connected to first motion, and the opposite side of light source is connected to the second motion, can drive the light source and move, realizes switching between the different light sources. Moreover, the first movement mechanism and the second movement mechanism are mutually independent and are respectively used for controlling the movement of the light source, so that the movement states of the first movement mechanism and the second movement mechanism for controlling the light source can be respectively adjusted, the movement states of the first movement mechanism and the second movement mechanism which are respectively positioned at two sides of the light source are close to or consistent with each other, the movement state of the light source in the macro defect inspection machine provided by the application is stable, the alarming or downtime probability of the macro defect inspection machine can be further reduced, and the defect inspection efficiency is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts. Wherein:
fig. 1 is a schematic structural diagram of an embodiment of the macro defect inspection machine of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments that can be obtained by a person skilled in the art without making any inventive step based on the embodiments in the present application belong to the protection scope of the present application.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of a macro defect inspection machine according to the present application, which includes a light source 10, a first motion mechanism and a second motion mechanism, wherein the first motion mechanism is connected to one side of the light source 10, i.e., side a in fig. 1, and the second motion mechanism is connected to the other side of the light source 10, i.e., side B in fig. 1. Also, the first and second movement mechanisms are independent of each other and are used to control the movement of the light source 10, respectively. Wherein, the first motion mechanism and the second motion mechanism can comprise a cylinder, a motor connecting rod and the like.
Specifically, the first motion mechanism and the second motion mechanism are respectively located at two opposite sides of the light source 10, and can drive the light source 10 to perform a telescopic motion in the Y direction in fig. 1, that is, perform a reciprocating motion between the first position M and the second position N. When the light source 10 is required to be used, it is extended to the first position M, and when the light source 10 is not required to be used, it is retracted to the second position N, so as to realize switching with other light sources. The motion state of the light source 10 in the telescopic motion process is affected by the first motion mechanism and the second motion mechanism, and when the first motion mechanism and the second motion mechanism respectively control the motion state of the light source 10 to have a large difference, the motion state of the light source 10 is unstable, so that the light source is stuck in the telescopic motion process, and the switching with other light sources cannot be smoothly realized.
In this embodiment, the first motion mechanism and the second motion mechanism are independent of each other and are respectively used for controlling the motion of the light source 10, that is, the first motion mechanism and the second motion mechanism can be respectively adjusted to control the motion of the light source 10, so that the states of the first motion mechanism and the second motion mechanism respectively located at two sides of the light source 10 are close to or consistent with each other, and thus the motion speed of the light source 10 in the macro defect inspection machine provided by the application is stable, the alarm or downtime probability of the macro defect inspection machine can be further reduced, and the defect inspection efficiency is improved.
Further, with reference to fig. 1, in the macro defect inspection machine provided by the present application, each of the first motion mechanism and the second motion mechanism includes a first limiting member 131 and a second limiting member 132, and the first limiting member 131 and the second limiting member 132 are respectively located at a first position M and a second position N, and are used for limiting the light source 10 to reciprocate between the first position M and the second position N, so as to limit the motion range of the light source 10 between the first position M and the second position N. In fig. 1, two first limiting members 131 and two second limiting members 132 are schematically illustrated, and in other embodiments, other numbers may be provided. The first limiting member 131 and the second limiting member 132 can limit the movement range of the light source 10 in the Y direction in fig. 1, so as to accurately control the position of the light source 10, and reduce the alarm probability of the macro defect inspection machine.
In some embodiments, please continue to refer to fig. 1, the first moving mechanism includes a first cylinder 111 and a first telescopic portion 112, and the second moving mechanism includes a second cylinder 121 and a second telescopic portion 122, wherein the first cylinder 111 is used for controlling the extension and retraction of the first telescopic portion 112, and the second cylinder 121 is used for controlling the extension and retraction of the second telescopic portion 122. The air inlets and the air sources of the first cylinder 111 and the second cylinder 121 are independent from each other, and the first moving mechanism and the second moving mechanism can be adjusted respectively, so that the air inflow of the two cylinders can be controlled respectively, and the first telescopic part 111 and the second telescopic part 112 can be controlled respectively. When the difference between the movement distances of the first telescopic part 111 and the second telescopic part 112 is large, the air inflow of the first air cylinder 111 and/or the second air cylinder 121 is adjusted to make the movement distances of the first telescopic part 111 and the second telescopic part 112 close to or consistent, so that the movement state of the light source 10 is stable in the telescopic movement process, the alarm or downtime probability of the macro defect inspection machine can be reduced, and the defect inspection efficiency is improved. In each of the embodiments described below, the adjustment process of the movement mechanism is described by taking a cylinder and an expansion and contraction portion as examples.
In some embodiments, with reference to fig. 1, the macro defect inspection machine further includes a first distance sensor 141 and a second distance sensor 142 respectively disposed on the first motion mechanism and the second motion mechanism for obtaining a first motion distance L1 and a second motion distance L2 that are used by the first motion mechanism and the second motion mechanism to control the motion of the light source 10. For example, the first and second distance sensors 141 and 142 may be laser range finders, the first distance sensor 141 may be disposed at an end of the first cylinder 111 near the first telescopic part 112 to obtain a first movement distance L1 by which the first telescopic part 112 is extended or retracted, and the second distance sensor 142 may be disposed at an end of the second cylinder 121 near the second telescopic part 122 to obtain a second movement distance L2 by which the second telescopic part 122 is extended or retracted.
Further, in the present embodiment, the macro defect inspection machine further includes a control device (not shown) coupled to the first motion mechanism, the second motion mechanism, the first distance sensor 141 and the second distance sensor 142, for controlling the first motion mechanism and the second motion mechanism according to the first motion distance L1 and the second motion distance L2, respectively, to adjust the first motion mechanism and/or the second motion mechanism to control the motion speed of the light source 10, so that the absolute value of the distance difference between the first motion distance L1 and the second motion distance L2 | L1-L2 is within the distance difference threshold Δ L.
Specifically, the control device comprises a distance acquisition module, a distance judgment module and a speed adjustment module. The distance acquisition module is used for periodically acquiring a first movement distance L1 and a second movement distance L2; the distance judgment module is used for obtaining the distance difference (L1-L2) and the absolute value | L1-L2 | of the distance difference and judging the absolute value | L1-L2 | of the distance difference and the size of the distance difference threshold delta L; the speed adjusting module is used for adjusting the first motion mechanism and/or the second motion mechanism to control the motion speed of the light source 10 when the absolute value of the distance difference | L1-L2 | is greater than or equal to the distance difference threshold Δ L, so that the absolute value of the distance difference | L1-L2 | is within the range of the distance difference threshold Δ L. The periodic time period is less than the time for the light source 10 to move from the first position M to the second position N, and is also less than the time for the light source 10 to move from the second position N to the first position M.
In a specific application scenario, the distance obtaining module obtains the first moving distance L1 and the second moving distance L2, and the distance determining module determines that the absolute value of the distance difference | L1-L2 | is greater than the distance difference threshold Δ L, which indicates that the speed adjusting module needs to be invoked to adjust the moving speed of the light source 10 controlled by the first moving mechanism and/or the second moving mechanism.
Specifically, whether the distance difference (L1-L2) is greater than zero or less than zero can be further determined, that is, the magnitude relationship between the first movement distance L1 and the second movement distance L2 is determined.
For example, if L1 is greater than L2, it indicates that the movement speed of the first motion mechanism controlled light source 10 is too fast, and the movement speed of the second motion mechanism controlled light source 10 may be kept unchanged (e.g., the amount of intake air for the second cylinder 121 is controlled to be unchanged), and the movement speed of the first motion mechanism controlled light source 10 may be reduced (e.g., the amount of intake air for the first cylinder 111 is reduced). The moving speed of the second moving mechanism controlled light source 10 may be increased while keeping the moving speed of the first moving mechanism controlled light source 10 unchanged. It is also possible to increase the movement speed of the second movement mechanism control light source 10 while decreasing the movement speed of the first movement mechanism control light source 10.
For another example, if L1 is smaller than L2, it means that the movement speed of the second motion mechanism controlled light source 10 is too fast, and the movement speed of the first motion mechanism controlled light source 10 can be kept unchanged (for example, the amount of intake air for controlling the first cylinder 111 is unchanged), and the movement speed of the second motion mechanism controlled light source 10 can be reduced (for example, the amount of intake air for the second cylinder 121 is reduced). The moving speed of the first moving mechanism controlled light source 10 may be increased while keeping the moving speed of the second moving mechanism controlled light source 10 unchanged. It is also possible to increase the movement speed of the first movement mechanism control light source 10 while decreasing the movement speed of the second movement mechanism control light source 10.
At this time, entering a second time period, the distance obtaining module obtains the first movement distance L1 and the second movement distance L2 again, the distance determining module determines whether the absolute value of the distance difference | L1-L2 | is greater than or equal to the distance difference threshold Δ L again, and the speed adjusting module repeats the adjusting process for the first movement mechanism and/or the second movement mechanism according to the determination result. In this loop, after two or more periodic comparisons, the absolute value of the distance difference | L1-L2 | is finally adjusted to be smaller than the distance difference threshold Δ L during one movement of the light source 10 for extension or retraction.
The air intake amount of the first cylinder 111 and the second cylinder 121 has a determined functional relationship with the speed of the first telescopic part 112 and the second telescopic part 122 driving the light source 10 to move, and the speed of the light source 10 moving has a determined functional relationship with the first moving distance L1 and the second moving distance L2, respectively, so that the air intake amount of the first cylinder 111 and/or the second cylinder 121 can be adjusted according to the absolute value of the distance difference | L1-L2 | to make the absolute value of the distance difference | L1-L2 | less than the distance difference threshold Δ L, thereby stabilizing the moving state of the light source 10 during the telescopic movement, further reducing the alarm or downtime probability of the macro defect inspection machine, and improving the efficiency of defect inspection.
In some embodiments, with continued reference to fig. 1, the macro defect inspection machine further includes a first speed sensor 151 and a second speed sensor 152, which are respectively disposed on the first moving mechanism and the second moving mechanism, and are respectively used for acquiring a first speed V1 and a second speed V2, which are respectively used by the first moving mechanism and the second moving mechanism for controlling the movement of the light source 10. Subsequently, whether the speed difference between the first telescopic part 111 and the second telescopic part 112 is too large can be judged according to the difference between the first speed V1 and the second speed V2, so as to adjust the air intake amount of the first air cylinder 111 and/or the second air cylinder 121, and the first speed V1 of the first telescopic part 112 and the second speed V2 of the second telescopic part 122 are close to or consistent with each other, thereby stabilizing the moving speed of the light source 10 in the process of telescopic movement.
Further, in this embodiment, the control device is further coupled to the first speed sensor 151 and the second speed sensor 152, and configured to control the first motion mechanism and the second motion mechanism according to the first speed V1 and the second speed V2, respectively, on the premise that the absolute value of the distance difference | L1-L2 | is smaller than the distance difference threshold Δ L, so that the absolute value of the distance difference | V1-V2 | between the first speed V1 and the second speed V2 is within the speed difference threshold Δ V. That is, when the absolute value of the distance difference | L1-L2 | is less than the distance difference threshold Δ L, it can be further determined whether the difference between the moving speeds of the first and second moving mechanisms is too large, so as to further stabilize the moving state of the light source 10.
Specifically, the control device further comprises a speed acquisition module and a speed judgment module. The speed acquisition module is used for periodically acquiring a first speed V1 and a second speed V2; the speed judging module is used for acquiring a speed difference value (V1-V2) between the first speed V1 and the second speed V2 and an absolute value | V1-V2 | of the speed difference value; the speed adjustment module may be further adapted to adjust the first speed V1 of the first movement means and/or the second speed V2 of the second movement means when the absolute value of the speed difference | V1-V2 | is greater than or equal to the speed difference threshold Δ V, such that the absolute value of the speed difference | V1-V2 | is within the speed difference threshold Δ V. The periodic time period is less than the time for the light source 10 to move from the first position M to the second position N, and is also less than the time for the light source 10 to move from the second position N to the first position M. It will be appreciated that if the absolute value of the speed difference between the first speed V1 and the second speed V2 | V1-V2 | is less than the speed difference threshold Δ V, the state of motion of the light source 10 is considered to be stable and no adjustment is required.
In a specific application scenario, the speed obtaining module obtains the first speed V1 and the second speed V2, and the speed determining module determines that the absolute value of the speed difference | V1-V2 | is greater than the speed difference threshold Δ V, which indicates that the difference between the moving speeds of the first moving mechanism and the second moving mechanism is too large, and the speed adjusting module is invoked to adjust the first speed V1 of the first moving mechanism and/or the second speed V2 of the second moving mechanism.
Specifically, the magnitude relationship between the first speed V1 and the second speed V2 can be further determined.
For example, if V1 is greater than V2, it indicates that the first speed V1 of the first motion mechanism is too fast, and the second speed V2 of the second motion mechanism can be kept constant (for example, the amount of intake air for the second cylinder 121 is controlled to be constant), and the first speed V1 of the first motion mechanism can be reduced (for example, the amount of intake air for the first cylinder 111 is reduced). The second speed V2 of the second motion mechanism may be increased while the first speed V1 of the first motion mechanism is kept constant. The second speed V2 may also be increased while the first speed V1 is decreased.
For another example, if V1 is smaller than V2, it means that the second speed V2 of the second motion mechanism is too fast, and the second speed V2 of the second motion mechanism can be reduced (for example, the intake air amount of the second cylinder 121 can be reduced) while the first speed V1 of the first motion mechanism is maintained (for example, the intake air amount of the first cylinder 111 is controlled). The first speed V1 of the first movement mechanism may be increased while the second speed V2 of the second movement mechanism is kept constant. The first speed V1 may also be increased while the second speed V2 is decreased.
When the second time period is entered, the speed obtaining module obtains the first speed V1 and the second speed V2 again, the speed determining module determines whether the absolute value of the speed difference | V1-V2 | is greater than or equal to the speed difference threshold Δ V again, and the speed adjusting module repeats the adjusting process of the first moving mechanism and/or the second moving mechanism according to the determination result. By repeating this process, after two or more periodic comparisons, the absolute value of the speed difference | V1-V2 | is finally adjusted to be smaller than the speed difference threshold Δ V during one movement of the light source 10 for extension or retraction.
The intake air quantities of the first cylinder 111 and the second cylinder 121 have a determined functional relationship with the moving speed of the first telescopic part 112 and the second telescopic part 122, that is, the first speed V1 and the second speed V2 have a determined functional relationship with the moving speed of the first telescopic part 112 and the second telescopic part, respectively, so that the intake air quantities of the first cylinder 111 and/or the second cylinder 121 can be adjusted according to the absolute value of the speed difference | V1-V2 | so that the absolute value of the speed difference | V1-V2 | is less than the speed difference threshold Δ V, thereby stabilizing the moving state of the light source 10 during telescopic movement, further reducing the warning or downtime probability of the macro-defect inspection machine and improving the defect inspection efficiency.
Preferably, the control device in each of the above embodiments is a proportional-integral-derivative controller (PID). In an application scenario where the absolute value of the speed difference | V1-V2 | is greater than the speed difference threshold Δ V, the control device controls the second speed V2 of the second motion mechanism to remain unchanged, and adjusts the first speed V1 of the first motion mechanism according to the absolute value | V1-V2 | of the speed difference threshold, for example, to illustrate the operation of the PID. After the PID acquires the first speed V1 and the second speed V2, the first speed V1 and the second speed V2 are converted into electrical signals V1(t) and V2(t), V1(t) and V2(t) are converted into binary digital signals V1(n) and V2(n) by analog-to-digital conversion, and a binary difference e (n) -V1 (n) -V2(n) is calculated. Then, PID calculates a digital signal m (n) of the intake air amount to be adjusted (increased or decreased) for the first cylinder 111 from a functional relationship between the intake air amount for the first cylinder 111 and the first speed V1 of the first expansion/contraction part 112, and converts m (n) into an electric signal m (t) to be applied to the first cylinder 111 by digital-to-analog conversion. When e (n) is greater than zero, the PID controls the first cylinder 111 to reduce the air intake amount according to M (t), and when e (n) is less than zero, the PID controls the first cylinder 111 to increase the air intake amount according to M (t), so that the first speed V1 is adjusted to be close to or equal to the second speed V2, the movement speed of the light source 10 is stabilized in the process of telescopic movement, the alarming or downtime probability of the macro defect inspection machine can be reduced, and the defect inspection efficiency is improved.
The above description is only for the purpose of illustrating embodiments of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application or are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.
Claims (10)
1. A macro defect inspection machine, comprising:
a light source;
the first motion mechanism is connected with one side of the light source;
the second motion mechanism is connected with the other side of the light source;
the first motion mechanism and the second motion mechanism are independent of each other and are respectively used for controlling the motion of the light source.
2. Macroscopic defect inspection machine according to claim 1,
the first movement mechanism comprises a first air cylinder and a first telescopic part, and the first air cylinder is used for controlling the first telescopic part to stretch;
the second motion mechanism comprises a second cylinder and a second telescopic part, and the second cylinder is used for controlling the second telescopic part to stretch.
3. The macro defect inspection machine of claim 1 or 2, further comprising:
and the first distance sensor and the second distance sensor are respectively arranged on the first movement mechanism and the second movement mechanism and are respectively used for acquiring a first movement distance and a second movement distance of the first movement mechanism and the second movement mechanism for controlling the movement of the light source.
4. The macro defect inspection machine of claim 3, further comprising:
and the control device is coupled to the first motion mechanism, the second motion mechanism, the first distance sensor and the second distance sensor, and is used for controlling the first motion mechanism and the second motion mechanism according to the first motion distance and the second motion distance respectively so as to adjust the motion speed of the light source controlled by the first motion mechanism and/or the second motion mechanism, so that the absolute value of the distance difference value between the first motion distance and the second motion distance is within a distance difference threshold range.
5. Macroscopic defect inspection machine according to claim 4,
the control device comprises a distance acquisition module, a distance judgment module and a speed adjustment module;
the distance acquisition module is used for periodically acquiring the first movement distance and the second movement distance; the distance judgment module is used for acquiring the distance difference value and the absolute value of the distance difference value and judging the absolute value of the distance difference value and the magnitude of the distance difference threshold; the speed adjusting module is used for adjusting the first motion mechanism and/or the second motion mechanism to control the motion speed of the light source when the absolute value of the distance difference value is larger than or equal to the distance difference threshold value, so that the absolute value of the distance difference value is within the range of the distance difference threshold value.
6. The macro defect inspection machine of claim 5, further comprising:
and the first speed sensor and the second speed sensor are respectively arranged on the first movement mechanism and the second movement mechanism and are respectively used for acquiring a first speed and a second speed of the first movement mechanism and the second movement mechanism for controlling the movement of the light source.
7. Macroscopic defect inspection machine according to claim 6,
the control device is further coupled to the first speed sensor and the second speed sensor, and configured to control the first movement mechanism and the second movement mechanism according to the first speed and the second speed, respectively, on the premise that an absolute value of the distance difference is smaller than the distance difference threshold, so that the absolute value of the speed difference between the first speed and the second speed is within a speed difference threshold range.
8. Macroscopic defect inspection machine according to claim 7,
the control device also comprises a speed acquisition module and a speed judgment module;
the speed acquisition module is used for periodically acquiring the first speed and the second speed; the speed judging module is used for acquiring the speed difference value and the absolute value of the speed difference value; the speed adjustment module is further configured to adjust the first speed of the first motion mechanism and/or the second speed of the second motion mechanism when the absolute value of the speed difference value is greater than or equal to the speed difference threshold value, so that the absolute value of the speed difference value is within the speed difference threshold range.
9. Macroscopic defect inspection machine according to claim 4,
the control device is a proportional-integral-derivative controller.
10. Macroscopic defect inspection machine according to claim 1,
the first motion mechanism and the second motion mechanism both comprise a first limiting piece and a second limiting piece, and the first limiting piece and the second limiting piece are used for limiting the light source to reciprocate between a first position and a second position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011041859.9A CN112285113A (en) | 2020-09-28 | 2020-09-28 | Macroscopic defect inspection machine |
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