Zero position calibration method and system for fast-reflection mirror

Abstract

The present application discloses a method and system for zero-position calibration of a quick-reflex mirror. The method comprises: performing initialization operations of a quick-reflex mirror and an autocollimator; reading the autocollimator's reading as the first position after the quick-reflex mirror is rotated 180 degrees and the quick-reflex mirror initialization operation is performed; continuously adjusting the given values ​​of the quick-reflex mirror azimuth and pitch angle closed loop until the preset position condition is judged to be met according to the adjustment position currently read by the autocollimator and the first position, and recording the given value of the quick-reflex mirror at this time as the target given value; reading the quick-reflex mirror rotated 180 degrees in the same direction and performing the quick-reflex mirror initialization operation, and then assigning the target given value to the quick-reflex mirror, and the autocollimator's reading is the second position; judging whether the preset threshold condition is met according to the first position and the second position, if so, taking the target given value as the zero-position value. The present application solves the technical problem of relatively low zero-position accuracy of calibration caused by measurement errors and human measurement errors.

Description

Technical Field

[0001] The present application relates to the field of optical metrology and measurement technology, and in particular to a method and system for zero-position calibration of a fast-reflection mirror. Background Art

[0002] A fast reflector is a servo control device that can quickly and accurately adjust the direction of the light beam between the light source and the target. Its main components are the fast reflector body (reflector, support mechanism, position feedback measurement device) and the drive control device.

[0003] The position feedback measurement device of the fast reflex mirror mainly detects the position information of the reflector. The pointing accuracy and resolution of the fast reflex mirror are relatively high near the zero position, and the fast reflex mirror is based on the structural mounting surface of the fast reflex mirror body during use. Therefore, it is necessary to calibrate the parallelism between the structural mounting surface of the fast reflex mirror and the mirror surface of the reflector through the calibration method, so as to calibrate the zero position of the fast reflex mirror. This ensures that the fast reflex mirror has high pointing accuracy and resolution, and at the same time ensures that there is enough travel on both sides of the fast reflex mirror.

[0004] In the prior art, zero-position calibration is mainly performed by three-coordinate measurement. This method has relatively low calibration zero-position accuracy due to measurement errors in the three-coordinate and human measurement errors. At the same time, this method increases equipment costs.

[0005] With regard to the problem of relatively low calibration zero position accuracy caused by measurement errors and human measurement errors in related technologies, no effective solution has been proposed so far. Summary of the invention

[0006] The main purpose of the present application is to provide a method and system for zero-position calibration of a fast-reflection mirror, so as to solve the problem of relatively low zero-position accuracy of calibration caused by measurement errors and human measurement errors.

[0007] In order to achieve the above objective, according to one aspect of the present application, a method for zero position calibration of a fast reflection mirror is provided.

[0008] According to the zero-position calibration method of the fast-reflection mirror of the present application, the zero-position calibration is performed using the zero-position calibration system of the fast-reflection mirror, the system comprising: a table, an autocollimator, a fast-reflection mirror and a processing component arranged on the table, the autocollimator is aligned with the fast-reflection mirror, and the processing component is electrically connected to the fast-reflection mirror; the method comprises: step S01, performing initialization operations of the fast-reflection mirror and the autocollimator; step S02, reading the first position of the autocollimator after the fast-reflection mirror is rotated 180 degrees and the initialization operation of the fast-reflection mirror is performed; step S03, continuously adjusting the azimuth and pitch angle of the fast-reflection mirror The closed-loop given value is determined until the preset position condition is met according to the adjustment position currently read by the autocollimator and the first position, and the closed-loop given values ​​of the azimuth and pitch angle of the fast reflex mirror that meet the preset position condition are recorded as the target given value; step S04, read the fast reflex mirror and rotate it 180 degrees in the same direction and perform the initialization operation of the fast reflex mirror, and then assign the target given value to the fast reflex mirror, and the reading of the autocollimator is the second position; step S05, determine whether the preset threshold condition is met according to the first position and the second position, and if so, use the target given value as the zero position value.

[0009] Further, the initialization operation of the fast-reflection mirror and the autocollimator is performed, including: the fast-reflection mirror is started and self-checked to ensure that the azimuth and pitch are in a closed-loop zero lock state; and the autocollimator is adjusted to reset the reading of the autocollimator to zero.

[0010] Furthermore, after determining whether the preset threshold condition is met according to the first position and the second position, it also includes: if not, looping through steps S02 to S05 until determining that the preset threshold condition is met according to the first position and the second position.

[0011] Furthermore, the preset position condition is that the adjustment position currently read by the autocollimator is (X1 / 2±γ, Y1 / 2±γ), wherein (X1, Y1) is the first position and γ is within 1 arc second.

[0012] Furthermore, the given values ​​of the quick reflex mirror azimuth and the pitch angle closed loop are continuously adjusted until the preset position condition is determined to be met based on the adjustment position currently read by the autocollimator and the first position, including: using a preset attenuation and increment algorithm, continuously determining the given values ​​of the quick reflex mirror azimuth and the pitch angle closed loop of the next round based on the given values ​​of the quick reflex mirror azimuth and the pitch angle closed loop of the previous round, until the preset position condition is determined to be met based on the adjustment position currently read by the autocollimator and the first position; or, continuously receiving the given values ​​of the quick reflex mirror azimuth and the pitch angle closed loop input by the user through the interactive panel, until the preset position condition is determined to be met based on the adjustment position currently read by the autocollimator and the first position.

[0013] Further, judging whether the preset threshold condition is met according to the first position and the second position, and if so, taking the target given value as the zero position value, including: judging whether the azimuth reading |X2-X1| of the first position and the second position and the pitch reading |Y2-Y1| of the first position and the second position are less than the set threshold θ, and if so, taking the target given value as the zero position value; wherein θ is within 20 arc seconds.

[0014] In order to achieve the above objective, according to another aspect of the present application, a zero position calibration system for a fast reflection mirror is provided.

[0015] The zero position calibration system of the quick reflex mirror according to the present application comprises: a table, an autocollimator, a quick reflex mirror and a processing component arranged on the table, the autocollimator is aligned with the quick reflex mirror, and the processing component is electrically connected to the quick reflex mirror; the processing component is used to read the reading of the autocollimator as the first position after the quick reflex mirror is rotated 180 degrees and the initialization operation of the quick reflex mirror is performed after the initialization operation of the quick reflex mirror and the autocollimator is performed; the given values ​​of the azimuth and pitch angle closed loop of the quick reflex mirror are continuously adjusted until it is judged that the preset position condition is met according to the adjustment position currently read by the autocollimator and the first position, and the given values ​​of the azimuth and pitch angle closed loop of the quick reflex mirror that meet the preset position condition are recorded as the target given values; the reading of the autocollimator is the second position after the quick reflex mirror is rotated 180 degrees in the same direction and the initialization operation of the quick reflex mirror is performed, and the target given value is assigned to the quick reflex mirror; it is judged whether the preset threshold condition is met according to the first position and the second position, and if so, the target given value is used as the zero position value.

[0016] Furthermore, after determining whether the preset threshold condition is met according to the first position and the second position, it also includes: if not, looping through steps S02 to S05 until determining that the preset threshold condition is met according to the first position and the second position.

[0017] Furthermore, the preset position condition is that the adjustment position currently read by the autocollimator is (X1 / 2±γ, Y1 / 2±γ), wherein (X1, Y1) is the first position and γ is within 1 arc second.

[0018] Further, judging whether the preset threshold condition is met according to the first position and the second position, and if so, taking the target given value as the zero position value, including: judging whether the azimuth reading |X2-X1| of the first position and the second position and the pitch reading |Y2-Y1| of the first position and the second position are less than the set threshold θ, and if so, taking the target given value as the zero position value; wherein θ is within 20 arc seconds.

[0019] In an embodiment of the present application, a method of zero-position calibration of a fast-reflex mirror using a zero-position calibration system of a fast-reflex mirror is adopted, wherein after executing the initialization operation of the fast-reflex mirror and the autocollimator, the reading of the autocollimator after the fast-reflex mirror is rotated 180 degrees and the initialization operation of the fast-reflex mirror is performed is the first position; the given values ​​of the azimuth and pitch angle closed loop of the fast-reflex mirror are continuously adjusted until it is determined that the preset position condition is met according to the adjustment position currently read by the autocollimator and the first position, and the given values ​​of the azimuth and pitch angle closed loop of the fast-reflex mirror that meet the preset position condition are recorded as the target given values; the reading of the autocollimator after the fast-reflex mirror is rotated 180 degrees in the same direction and the initialization operation of the fast-reflex mirror is performed, and the target given value is assigned to the fast-reflex mirror is the second position; it is determined whether the preset threshold condition is met according to the first position and the second position, and if so, the target given value is used as the zero-position value; the purpose of avoiding measurement errors and human measurement errors is achieved, thereby achieving the technical effect of improving the zero-position accuracy of calibration in the future, and thus solving the technical problem of relatively low zero-position accuracy of calibration caused by the existence of measurement errors and human measurement errors. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The drawings constituting a part of this application are used to provide a further understanding of this application, so that other features, purposes and advantages of this application become more obvious. The schematic embodiment drawings and their descriptions of this application are used to explain this application and do not constitute an improper limitation on this application. In the drawings:

[0021] Figure 1 is a flow chart of a method for zeroing a fast-reflection mirror according to an embodiment of the present application;

[0022] Figure 2 This is one of the state schematic diagrams of the zero position calibration system of the fast reflection mirror according to the embodiment of the present application;

[0023] Figure 3 This is the second state schematic diagram of the zero position calibration system of the fast reflection mirror according to the embodiment of the present application;

[0024] Figure 4 It is a flow chart of a method for zero-position calibration of a fast-reflection mirror according to a preferred embodiment of the present application.

[0025] Reference numerals

[0026] 1. Table; 2. Autocollimator; 3. Test fixture; 4. Fast mirror; 5. Regulated power supply; 6. Test computer; 7. Simulator; 8. Processing component. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0028] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0029] In the present application, the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings. These terms are mainly used to better describe the present invention and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0030] In addition, some of the above terms may be used to express other meanings in addition to indicating orientation or positional relationship. For example, the term "on" may also be used to express a certain dependency or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in the present invention can be understood according to specific circumstances.

[0031] In addition, the terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, elements, or components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0033] According to an embodiment of the present invention, a method for zeroing a fast mirror 4 is provided, such as Figure 1-4 As shown, a zero-position calibration system using a quick-reflection mirror 4 is used for zero-position calibration, the system comprising: a table 1, an autocollimator 2, a quick-reflection mirror 4 and a processing component 8 arranged on the table 1, the autocollimator 2 is aligned with the quick-reflection mirror 4, and the processing component 8 is electrically connected to the quick-reflection mirror 4; according to Figure 2 The structure shown is assembled to form a zero-position calibration system of a quick-reflection mirror 4; specifically, a table 1 is provided, which is a vibration isolation platform, on which an autocollimator 2, a test fixture 3, a quick-reflection mirror 4, and a processing component 8 (including a voltage-stabilized power supply 5, a test computer 6, and a simulator 7) are provided, the autocollimator 2 is located at the leftmost end of the table 1, the quick-reflection mirror 4 is provided on the test fixture 3 and is located on the right side of the autocollimator 2, the voltage-stabilized power supply 5 is located on the right side of the test fixture 3, the simulator 7 is located on the right side of the voltage-stabilized power supply 5, and the test computer 6 is located on the right side of the simulator 7. After assembly is completed, zero-position calibration can be performed.

[0034] It should be understood that the test fixture 3 is provided with a clamping mechanism for fixing the quick-reflection mirror 4 , which can effectively fix the quick-reflection mirror 4 .

[0035] The method comprises:

[0036] Step S01, executing initialization operation of the fast reflection mirror 4 and the autocollimator 2;

[0037] Specifically, the operation performs the initialization operation of the quick reflex mirror 4 and the autocollimator 2, including: the quick reflex mirror 4 is started and self-checked to put the azimuth and pitch in a closed-loop zero lock state; and the autocollimator 2 is adjusted to make the reading of the autocollimator 2 clear to zero.

[0038] Step S02, reading the reading of the autocollimator 2 after the quick reflection mirror 4 rotates 180 degrees and performs the initialization operation of the quick reflection mirror 4, and the reading is the first position;

[0039] After the quick reflex mirror 4 rotates 180 degrees, starts and self-checks that the azimuth and pitch are in a closed-loop zero lock state, the autocollimator 2 is controlled to align with the quick reflex mirror 4, and the autocollimator 2 measures a data, which is the first position; the data is read for subsequent use.

[0040] In this embodiment, the 180-degree rotation can be performed manually, or a rotating mechanism can be provided at the lower side of the clamping mechanism, and the processing component 8 sends a control signal to control the motor to rotate, thereby driving the quick-reflection mirror 4 on the rotating mechanism to rotate 180 degrees.

[0041] Furthermore, the reading of the autocollimator 2 as the first position can be manually read, recorded and then input into the processing component 8 for calculation; or the processing component 8 can be directly connected to the autocollimator 2 to read the position information therefrom.

[0042] It should be understood that the first position is the azimuth and pitch angle value of the quick reflex mirror 4 , and the azimuth and pitch angle value of the quick reflex mirror 4 are represented by (X1, Y1).

[0043] Step S03, continuously adjusting the given values ​​of the azimuth and pitch angle closed loop of the quick reflex mirror 4 until it is determined that a preset position condition is met according to the adjustment position currently read by the autocollimator 2 and the first position, and recording the given values ​​of the azimuth and pitch angle closed loop of the quick reflex mirror 4 that meet the preset position condition as target given values;

[0044] By continuously adjusting the given values ​​of the azimuth and elevation angle closed loops of the quick reflex mirror and presetting a position condition, only the given values ​​of the azimuth and elevation angle closed loops of the quick reflex mirror that meet the position condition are recorded, and the action of adjusting the given values ​​is stopped; if the condition is not met, a given value is continued to be given to determine again whether the condition is met; this cycle is repeated until the condition is met and the action of adjusting the given value is stopped.

[0045] It should be understood that the preset position condition is that the adjustment position currently read by the autocollimator 2 is (X1 / 2±γ, Y1 / 2±γ), where (X1, Y1) is the first position and γ is within 1 arc second; when the adjustment position currently read by the autocollimator 2 is (X1 / 2±γ, Y1 / 2±γ), it is determined to meet the preset position condition, and after testing, when γ is within 1 arc second, the zero position accuracy is high; or the γ value can be determined according to the actual test situation.

[0046] Specifically, the given values ​​of the azimuth and elevation angle closed loop of the fast reflection mirror 4 are continuously adjusted until it is determined that the preset position condition is met according to the adjustment position currently read by the autocollimator 2 and the first position, including:

[0047] By adopting the preset attenuation and increment algorithm, the given values ​​of the azimuth and pitch angle closed loop of the quick reflex mirror 4 in the next round are continuously determined based on the given values ​​of the azimuth and pitch angle closed loop of the quick reflex mirror 4 in the previous round, until it is judged that the preset position condition is met according to the adjustment position currently read by the autocollimator 2 and the first position; the processing component 8 can have a built-in corresponding program to automatically determine the given values ​​of the azimuth and pitch angle closed loop of each round of the quick reflex mirror 4, and the program is also used to automatically judge whether the preset position condition is met, and only when it is judged that the preset position condition is met, the corresponding given value is determined as the target given value; if it is not met, the above program is executed in a loop until it is met.

[0048] Or, the given values ​​of the azimuth and pitch angle closed loop of the quick reflex mirror 4 input by the user through the interactive panel are continuously received until the preset position condition is determined to be met according to the adjustment position currently read by the autocollimator 2 and the first position. Alternatively, the user may input the given values ​​of the azimuth and pitch angle closed loop of the quick reflex mirror 4 through the interactive panel of the processing component 8, manually determine the given values ​​of the azimuth and pitch angle closed loop of each round of the quick reflex mirror 4, and then automatically determine whether the preset position condition is met through the judgment program built into the processing component 8, and only determine the corresponding given value as the target given value when it is determined to be met; if not, the above steps are executed repeatedly until it is met.

[0049] Step S04, read the quick-reflection mirror 4 and rotate it 180 degrees in the same direction and perform the initialization operation of the quick-reflection mirror 4, then assign the target given value to the quick-reflection mirror 4, and the reading of the autocollimator 2 is the second position;

[0050] like Figure 3 As shown, after the quick reflex mirror 4 rotates 180 degrees in the same direction, and after the azimuth and pitch are in a closed-loop zero lock state after startup and self-checking, the autocollimator 2 is controlled to align with the quick reflex mirror 4, and the autocollimator 2 measures a data, which is the second position; the data is read for subsequent use.

[0051] In this embodiment, the 180-degree rotation can be performed manually, or a rotating mechanism can be provided at the lower side of the clamping mechanism, and the processing component 8 sends a control signal to control the motor to rotate, thereby driving the quick-reflection mirror 4 on the rotating mechanism to rotate 180 degrees.

[0052] Furthermore, the reading of the autocollimator 2 as the second position can be manually read, recorded and then input into the processing component 8 for calculation; or the processing component 8 can be directly connected to the autocollimator 2 to read the position information therefrom.

[0053] It should be understood that the second position is the azimuth and pitch angle value of the quick reflex mirror 4 , and the azimuth and pitch angle value of the quick reflex mirror 4 are represented by (X2, Y2).

[0054] Step S05: judging whether a preset threshold condition is satisfied according to the first position and the second position; if so, taking the target given value as the zero position value.

[0055] Specifically, judging whether the preset threshold condition is met according to the first position and the second position, and if so, taking the target given value as the zero position value, including: judging whether the azimuth reading |X2-X1| of the first position and the second position and the pitch reading |Y2-Y1| of the first position and the second position are less than the set threshold θ, and if so, taking the target given value as the zero position value; wherein θ is within 20 arc seconds.

[0056] After the fast mirror 4 rotates back to the initial position and is assigned a target given value, the second position is read again and judged by the threshold judgment program set on the processing component 8. Only when it is judged to be less than the threshold θ, the target given value is used as the zero position value; the zero position calibration is completed.

[0057] After judging whether the preset threshold condition is met according to the first position and the second position, the method further includes: if not, looping through steps S02 to S05 until judging that the preset threshold condition is met according to the first position and the second position. If it is judged to be not less than the threshold value θ, looping through steps S02 to S05 through a loop program set on the processing component 8 until judging that the preset threshold condition is met according to the first position and the second position, and completing the zero position calibration.

[0058] From the above description, it can be seen that the present invention achieves the following technical effects:

[0059] In the embodiment of the present application, the zero position calibration system of the quick reflex mirror 4 is used to calibrate the zero position of the quick reflex mirror 4. After the quick reflex mirror 4 and the autocollimator 2 are initialized, the reading of the autocollimator 2 is the first position after the quick reflex mirror 4 is rotated 180 degrees and the initialization operation of the quick reflex mirror 4 is performed; the given values ​​of the azimuth and pitch angle closed loop of the quick reflex mirror 4 are continuously adjusted until the preset position condition is determined to be met according to the adjustment position currently read by the autocollimator 2 and the first position, and the given values ​​of the azimuth and pitch angle closed loop of the quick reflex mirror 4 that meet the preset position condition are recorded as the target The given value is read; the quick reflex mirror 4 is rotated 180 degrees in the same direction and the initialization operation of the quick reflex mirror 4 is performed, and then the target given value is assigned to the quick reflex mirror 4, and the reading of the autocollimator 2 is the second position; according to the first position and the second position, it is judged whether the preset threshold condition is met, and if so, the target given value is used as the zero position value; the purpose of avoiding measurement errors and human measurement errors is achieved, thereby achieving the technical effect of slightly improving the zero position accuracy of calibration in the future, and then solving the technical problem of relatively low zero position accuracy of calibration caused by measurement errors and human measurement errors.

[0060] It should be noted that the steps shown in the flowcharts of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and that, although a logical order is shown in the flowcharts, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0061] According to an embodiment of the present invention, a zero position calibration system for a fast reflection mirror 4 is also provided. Figure 1-4 As shown, the system comprises: a table 1, an autocollimator 2, a quick mirror 4 and a processing component 8 arranged on the table 1, the autocollimator 2 is aligned with the quick mirror 4, and the processing component 8 is electrically connected to the quick mirror 4; Figure 2The structure shown is assembled to form a zero-position calibration system of a quick-reflection mirror 4; specifically, a table 1 is provided, which is a vibration isolation platform, on which an autocollimator 2, a test fixture 3, a quick-reflection mirror 4, and a processing component 8 (including a voltage-stabilized power supply 5, a test computer 6, and a simulator 7) are provided, the autocollimator 2 is located at the leftmost end of the table 1, the quick-reflection mirror 4 is provided on the test fixture 3 and is located on the right side of the autocollimator 2, the voltage-stabilized power supply 5 is located on the right side of the test fixture 3, the simulator 7 is located on the right side of the voltage-stabilized power supply 5, and the test computer 6 is located on the right side of the simulator 7. After assembly is completed, zero-position calibration can be performed.

[0062] The processing component 8 is used to read the reading of the autocollimator 2 as the first position after the fast mirror 4 rotates 180 degrees and performs the initialization operation of the fast mirror 4 after performing the initialization operation of the fast mirror 4;

[0063] Specifically, the operation performs the initialization operation of the quick reflex mirror 4 and the autocollimator 2, including: the quick reflex mirror 4 is started and self-checked to put the azimuth and pitch in a closed-loop zero lock state; and the autocollimator 2 is adjusted to make the reading of the autocollimator 2 clear to zero.

[0064] After the quick reflex mirror 4 rotates 180 degrees, starts and self-checks that the azimuth and pitch are in a closed-loop zero lock state, the autocollimator 2 is controlled to align with the quick reflex mirror 4, and the autocollimator 2 measures a data, which is the first position; the data is read for subsequent use.

[0065] In this embodiment, the 180-degree rotation can be performed manually, or a rotating mechanism can be provided at the lower side of the clamping mechanism, and the processing component 8 sends a control signal to control the motor to rotate, thereby driving the quick-reflection mirror 4 on the rotating mechanism to rotate 180 degrees.

[0066] Furthermore, the reading of the autocollimator 2 as the first position can be manually read, recorded and then input into the processing component 8 for calculation; or the processing component 8 can be directly connected to the autocollimator 2 to read the position information therefrom.

[0067] It should be understood that the first position is the azimuth and pitch angle value of the quick reflex mirror 4 , and the azimuth and pitch angle value of the quick reflex mirror 4 are represented by (X1, Y1).

[0068] Continuously adjusting the given values ​​of the azimuth and elevation angle closed loop of the fast reflex mirror 4 until it is determined that the preset position condition is met according to the adjustment position currently read by the autocollimator 2 and the first position, and recording the given values ​​of the azimuth and elevation angle closed loop of the fast reflex mirror 4 that meet the preset position condition as the target given values;

[0069] By continuously adjusting the given values ​​of the azimuth and elevation angle closed loops of the quick reflex mirror and presetting a position condition, only the given values ​​of the azimuth and elevation angle closed loops of the quick reflex mirror that meet the position condition are recorded, and the action of adjusting the given values ​​is stopped; if the condition is not met, a given value is continued to be given to determine again whether the condition is met; this cycle is repeated until the condition is met and the action of adjusting the given value is stopped.

[0070] It should be understood that the preset position condition is that the adjustment position currently read by the autocollimator 2 is (X1 / 2±γ, Y1 / 2±γ), where (X1, Y1) is the first position and γ is within 1 arc second; when the adjustment position currently read by the autocollimator 2 is (X1 / 2±γ, Y1 / 2±γ), it is determined to meet the preset position condition, and after testing, when γ is within 1 arc second, the zero position accuracy is high; or the γ value can be determined according to the actual test situation.

[0071] Specifically, the given values ​​of the azimuth and elevation angle closed loop of the fast reflection mirror 4 are continuously adjusted until it is determined that the preset position condition is met according to the adjustment position currently read by the autocollimator 2 and the first position, including:

[0072] By adopting the preset attenuation and increment algorithm, the given values ​​of the azimuth and pitch angle closed loop of the quick reflex mirror 4 in the next round are continuously determined based on the given values ​​of the azimuth and pitch angle closed loop of the quick reflex mirror 4 in the previous round, until it is judged that the preset position condition is met according to the adjustment position currently read by the autocollimator 2 and the first position; the processing component 8 can have a built-in corresponding program to automatically determine the given values ​​of the azimuth and pitch angle closed loop of each round of the quick reflex mirror 4, and the program is also used to automatically judge whether the preset position condition is met, and only when it is judged that the preset position condition is met, the corresponding given value is determined as the target given value; if it is not met, the above program is executed in a loop until it is met.

[0073] Or, the given values ​​of the azimuth and pitch angle closed loop of the quick reflex mirror 4 input by the user through the interactive panel are continuously received until the preset position condition is determined to be met according to the adjustment position currently read by the autocollimator 2 and the first position. Alternatively, the user may input the given values ​​of the azimuth and pitch angle closed loop of the quick reflex mirror 4 through the interactive panel of the processing component 8, manually determine the given values ​​of the azimuth and pitch angle closed loop of each round of the quick reflex mirror 4, and then automatically determine whether the preset position condition is met through the judgment program built into the processing component 8, and only determine the corresponding given value as the target given value when it is determined to be met; if not, the above steps are executed repeatedly until it is met.

[0074] Read the quick-reflection mirror 4 and rotate it 180 degrees in the same direction and perform the initialization operation of the quick-reflection mirror 4, then assign the target given value to the quick-reflection mirror 4, and the reading of the autocollimator 2 is the second position;

[0075] like Figure 3 As shown, after the quick reflex mirror 4 rotates 180 degrees in the same direction, and after the azimuth and pitch are in a closed-loop zero lock state after startup and self-checking, the autocollimator 2 is controlled to align with the quick reflex mirror 4, and the autocollimator 2 measures a data, which is the second position; the data is read for subsequent use.

[0076] In this embodiment, the 180-degree rotation can be performed manually, or a rotating mechanism can be provided at the lower side of the clamping mechanism, and the processing component 8 sends a control signal to control the motor to rotate, thereby driving the quick-reflection mirror 4 on the rotating mechanism to rotate 180 degrees.

[0077] Furthermore, the reading of the autocollimator 2 as the second position can be manually read, recorded and then input into the processing component 8 for calculation; or the processing component 8 can be directly connected to the autocollimator 2 to read the position information therefrom.

[0078] It should be understood that the second position is the azimuth and pitch angle value of the quick reflex mirror 4 , and the azimuth and pitch angle value of the quick reflex mirror 4 are represented by (X2, Y2).

[0079] It is determined whether a preset threshold condition is met according to the first position and the second position. If so, the target given value is used as the zero position value.

[0080] Specifically, judging whether the preset threshold condition is met according to the first position and the second position, and if so, taking the target given value as the zero position value, including: judging whether the azimuth reading |X2-X1| of the first position and the second position and the pitch reading |Y2-Y1| of the first position and the second position are less than the set threshold θ, and if so, taking the target given value as the zero position value; wherein θ is within 20 arc seconds.

[0081] After the fast mirror 4 rotates back to the initial position and is assigned a target given value, the second position is read again and judged by the threshold judgment program set on the processing component 8. Only when it is judged to be less than the threshold θ, the target given value is used as the zero position value; the zero position calibration is completed.

[0082] After judging whether the preset threshold condition is met according to the first position and the second position, the method further includes: if not, looping through steps S02 to S05 until judging that the preset threshold condition is met according to the first position and the second position. If it is judged to be not less than the threshold value θ, looping through steps S02 to S05 through a loop program set on the processing component 8 until judging that the preset threshold condition is met according to the first position and the second position, and completing the zero position calibration.

[0083] From the above description, it can be seen that the present invention achieves the following technical effects:

[0084] In the embodiment of the present application, the zero position calibration system of the quick reflex mirror 4 is used to calibrate the zero position of the quick reflex mirror 4. After the quick reflex mirror 4 and the autocollimator 2 are initialized, the reading of the autocollimator 2 is the first position after the quick reflex mirror 4 is rotated 180 degrees and the initialization operation of the quick reflex mirror 4 is performed; the given values ​​of the azimuth and pitch angle closed loop of the quick reflex mirror 4 are continuously adjusted until the preset position condition is determined to be met according to the adjustment position currently read by the autocollimator 2 and the first position, and the given values ​​of the azimuth and pitch angle closed loop of the quick reflex mirror 4 that meet the preset position condition are recorded as the target The given value is read; the quick reflex mirror 4 is rotated 180 degrees in the same direction and the initialization operation of the quick reflex mirror 4 is performed, and then the target given value is assigned to the quick reflex mirror 4, and the reading of the autocollimator 2 is the second position; according to the first position and the second position, it is judged whether the preset threshold condition is met, and if so, the target given value is used as the zero position value; the purpose of avoiding measurement errors and human measurement errors is achieved, thereby achieving the technical effect of slightly improving the zero position accuracy of calibration in the future, and then solving the technical problem of relatively low zero position accuracy of calibration caused by measurement errors and human measurement errors.

[0085] Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general computing device, they can be concentrated on a single computing device, or distributed on a network composed of multiple computing devices, and optionally, they can be implemented by a program code executable by a computing device, so that they can be stored in a storage device and executed by the computing device, or they can be made into individual integrated circuit modules, or multiple modules or steps therein can be made into a single integrated circuit module for implementation. Thus, the present invention is not limited to any specific combination of hardware and software.

[0086] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method for zero-position calibration of a fast-reflection mirror, using a zero-position calibration system of a fast-reflection mirror for zero-position calibration, characterized in that: The system comprises: a table, an autocollimator, a quick-reflection mirror and a processing component arranged on the table, the autocollimator is aligned with the quick-reflection mirror, and the processing component is electrically connected to the quick-reflection mirror; The method comprises: Step S01, performing initialization operation of the fast reflection mirror and the autocollimator; Step S02, reading the first position of the autocollimator after the fast mirror rotates 180 degrees and performs the initialization operation of the fast mirror; Step S03, continuously adjusting the given values ​​of the closed loop of the azimuth and pitch angle of the fast reflex mirror until it is determined that a preset position condition is met according to the adjustment position currently read by the autocollimator and the first position, and recording the given values ​​of the closed loop of the azimuth and pitch angle of the fast reflex mirror that meet the preset position condition as target given values; Step S04, read the quick-reflection mirror and rotate it 180 degrees in the same direction and perform the quick-reflection mirror initialization operation, then assign the target given value to the quick-reflection mirror, and the reading of the autocollimator is the second position; Step S05: judging whether a preset threshold condition is satisfied according to the first position and the second position; if so, taking the target given value as the zero position value.

2. The method according to claim 1, characterized in that Perform initialization operations for the fast mirror and autocollimator, including: After the fast-reflection mirror is started and self-checked, the azimuth and pitch are in a closed-loop zero lock state; adjust the autocollimator so that the reading of the autocollimator is reset to zero.

3. The method according to claim 1, characterized in that After determining whether a preset threshold condition is met according to the first position and the second position, the method further includes: If not, step S02 to step S05 are executed in a loop until it is determined that the preset threshold condition is met according to the first position and the second position.

4. The method according to claim 1, characterized in that: The preset position condition is that the adjustment position currently read by the autocollimator is (X1 / 2±γ, Y1 / 2±γ), where (X1, Y1) is the first position and γ is within 1 arc second.

5. The method according to claim 1, characterized in that Continuously adjusting the given values ​​of the closed loop of the azimuth and elevation angle of the fast-reflecting mirror until the preset position condition is determined to be met according to the adjustment position currently read by the autocollimator and the first position, including: Using a preset attenuation and increment algorithm, the given values ​​of the quick-reflection mirror azimuth and the pitch angle closed loop of the next round are continuously determined based on the given values ​​of the quick-reflection mirror azimuth and the pitch angle closed loop of the previous round, until it is determined that the preset position condition is met according to the adjustment position currently read by the autocollimator and the first position; Or, the given values ​​of the fast mirror azimuth and pitch angle closed loop input by the user through the interactive panel are continuously received until it is determined that the preset position condition is met according to the adjustment position currently read by the autocollimator and the first position.

6. The method according to claim 1, characterized in that The method comprises: determining whether a preset threshold condition is met according to the first position and the second position, and if so, taking the target given value as the zero position value, including: Determine whether the azimuth reading |X2-X1| of the first position and the second position and the pitch reading |Y2-Y1| of the first position and the second position are less than a set threshold value θ. If so, take the target given value as the zero position value; wherein θ is within 20 arc seconds.

7. A zero position calibration system for a fast-reflection mirror, characterized in that: It comprises: a table, an autocollimator, a quick-reflection mirror and a processing component arranged on the table, the autocollimator is aligned with the quick-reflection mirror, and the processing component is electrically connected with the quick-reflection mirror; The processing component is used to read the reading of the autocollimator as the first position after the fast mirror is rotated 180 degrees and the initialization operation of the fast mirror is performed after the initialization operation of the fast mirror is performed; Continuously adjusting the given values ​​of the closed loop of the azimuth and elevation angle of the fast reflex mirror until it is determined that a preset position condition is met according to the adjustment position currently read by the autocollimator and the first position, and recording the given values ​​of the closed loop of the azimuth and elevation angle of the fast reflex mirror that meet the preset position condition as target given values; Read the fast-reflection mirror and rotate it 180 degrees in the same direction and perform the initialization operation of the fast-reflection mirror. Then, after assigning the target given value to the fast-reflection mirror, the reading of the autocollimator is the second position; It is determined whether a preset threshold condition is met according to the first position and the second position. If so, the target given value is used as the zero position value.

8. The zero position calibration system of the fast reflection mirror according to claim 7, characterized in that: After determining whether a preset threshold condition is met according to the first position and the second position, the method further includes: If not, step S02 to step S05 are executed in a loop until it is determined that the preset threshold condition is met according to the first position and the second position.

9. The zero position calibration system of the fast reflection mirror according to claim 7, characterized in that: The preset position condition is that the adjustment position currently read by the autocollimator is (X1 / 2±γ, Y1 / 2±γ), where (X1, Y1) is the first position and γ is within 1 arc second.

10. The zero position calibration system of the fast reflection mirror according to claim 7, characterized in that: The method comprises: determining whether a preset threshold condition is met according to the first position and the second position, and if so, taking the target given value as the zero position value, including: Determine whether the azimuth reading |X2-X1| of the first position and the second position and the pitch reading |Y2-Y1| of the first position and the second position are less than a set threshold value θ. If so, take the target given value as the zero position value; wherein θ is within 20 arc seconds.

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