A signal control method, control device and control system

Abstract

The application discloses a signal control method, a control device and a control system. The signal control method comprises the following steps: obtaining a plurality of control parameters of a controller corresponding to a single input signal and at least one output signal corresponding to the control parameters; establishing a characteristic curve of the control parameters-test results according to the plurality of control parameters and the at least one output signal; determining an expected test result and initial control parameters of the controller corresponding to the expected test result according to the characteristic curve, and recording the monotonicity of the expected test result at the position of the characteristic curve; obtaining an actual test result of the initial control parameters; and adjusting the control parameters of the controller according to the relationship among the monotonicity, the actual test result and the expected test result, so that the actual test result after the adjustment of the control parameters is consistent with the expected test result. The control method provided by the application adjusts the control parameters of the controller, so that the actual test result is consistent with the expected test result.

Description

Technical Field

[0001] This invention relates to the field of signal control technology, and in particular to a signal control method, control device and control system. Background Technology

[0002] In current technologies, such as optical control, the intensity of light is often controlled by adjusting the phase difference between two beams. Examples include beam splitters and optical switches. Beam splitters control the phase difference between two beams by adjusting the temperature of a heater. Because of this phase difference, the intensity of the superimposed beam can be controlled. However, the feedback curve is no longer a monotonic curve but a sinusoidal curve. For instance, in devices that control the splitting ratio through heater temperature, the temperature is highly susceptible to ambient temperature. For example, at an ambient temperature of 25°C, a heater-controlled temperature of 35°C might result in a splitting ratio of 70%. However, if the ambient temperature changes, the heater temperature under the same current control will no longer be 35°C, and the splitting ratio will also change. Ambient temperature causes a shift in the curve. Under different ambient temperatures, the period and amplitude may be the same, but the phase may differ. This leads to changes in the feedback control algorithm as the ambient temperature changes. Figure 1 This is a graph showing the relationship between the temperature of the light beam and the splitting ratio in existing technologies, such as... Figure 1 As shown, at point A, within the orange line (ambient temperature 1), the refraction ratio needs to increase and the temperature needs to rise. However, within the blue line (ambient temperature 2), the refraction ratio needs to increase and the temperature needs to fall. This requires a complete monitoring and feedback mechanism for adjustment. Summary of the Invention

[0003] This invention provides a signal control method that establishes a characteristic curve of control parameters and test results. The method determines the desired test result and the initial control parameters of the controller corresponding to the desired test result, as well as the monotonicity of the desired test result at the position on the characteristic curve. This determines the direction of correction for the actual control parameters of the controller (i.e., whether to increase or decrease the actual control parameters to achieve the desired test result). This achieves the technical effect that the desired test result can be achieved by adjusting the actual control parameters of the controller.

[0004] According to a first aspect of the present invention, a signal control method is provided, applied to a control system with a single input signal and at least one output signal, the signal control method comprising:

[0005] Acquire multiple control parameters of the controller corresponding to the single input signal and at least one output signal corresponding to the control parameters;

[0006] A characteristic curve of control parameter-test result is established based on multiple control parameters and at least one output signal;

[0007] The expected test result and the initial control parameters of the controller corresponding to the expected test result are determined based on the characteristic curve, and the monotonicity of the expected test result at the position of the characteristic curve is recorded.

[0008] Obtain the actual test results of the initial control parameters;

[0009] The control parameters of the controller are adjusted according to the monotonicity, the relationship between the actual test results and the expected test results, so that the actual test results after adjusting the control parameters are consistent with the expected test results.

[0010] Optionally, determining the desired test result and the initial control parameters of the controller corresponding to the desired test result based on the characteristic curve includes:

[0011] Substituting the expected test result into the characteristic curve, the initial control parameters of the controller corresponding to the expected test result are obtained.

[0012] Optionally, obtaining the actual test results of the initial control parameters includes:

[0013] Control the controller to operate with the initial control parameters;

[0014] Obtain the actual test results of the controller running with the initial control parameters.

[0015] Optionally, adjusting the control parameters of the controller based on the monotonicity, the relationship between the actual test result and the expected test result, so that the actual test result after adjusting the control parameters is consistent with the expected test result, includes:

[0016] When the monotonicity is monotonically decreasing, if the actual test result is less than the expected test result, the control parameter of the controller is decreased; if the actual test result is greater than or equal to the expected test result, the control parameter of the controller is increased.

[0017] When the monotonicity is monotonically increasing, if the actual test result is less than the expected test result, the control parameter of the controller is increased; if the actual test result is greater than or equal to the expected test result, the control parameter of the controller is decreased.

[0018] Optionally, when adjusting the control parameters of the controller based on the monotonicity, the relationship between the actual test results and the desired test results,

[0019] If the control parameters of the controller exceed the maximum tuning range of the controller when the actual test result is consistent with the expected test result, then the initial control parameters are shifted by half a cycle according to the characteristic curve, and the control parameters of the controller are adjusted so that the adjusted test result is consistent with the expected test result.

[0020] According to a second aspect of the present invention, a signal control device is provided for a control system having a single input signal and at least one output signal, the signal control device comprising:

[0021] The first acquisition module is used to acquire multiple control parameters of the controller and at least one output signal corresponding to the control parameters;

[0022] The first characteristic curve establishment module is used to establish a characteristic curve of control parameter-test result based on the control parameters and at least one of the output signals.

[0023] The first monotonicity determination module is used to determine the expected test result and the initial control parameters of the controller corresponding to the expected test result based on the characteristic curve, and to record the monotonicity of the expected test result at the position of the characteristic curve.

[0024] The first test result acquisition module is used to acquire the actual test results of the initial control parameters;

[0025] The first adjustment module is used to adjust the control parameters of the controller according to the relationship between the monotonicity, the actual test results and the expected test results, so that the test results after adjusting the control parameters are consistent with the expected test results.

[0026] According to a third aspect of the present invention, a signal control method is provided, applied to a control system with a single input signal and at least one output signal, the signal control device comprising:

[0027] Acquire multiple control parameters of the controller corresponding to the single input signal and at least one output signal corresponding to the control parameters;

[0028] A characteristic curve of control parameters versus test results is established based on the control parameters and at least one of the output signals;

[0029] The expected test result and the initial control parameters of the controller corresponding to the expected test result are determined based on the characteristic curve.

[0030] Obtain the actual test results of the initial control parameters;

[0031] Based on the initial control parameters, the actual test results, and the expected test results, the control parameters of the controller are adjusted using proportional-integral-derivative (PID) methods so that the test results after adjusting the control parameters are consistent with the expected test results.

[0032] Optionally, the control parameters of the controller can be adjusted using proportional-integral-derivative (PID) methods, including:

[0033] The feedback regulation power value is calculated using formula (I):

[0034] P=P0+dir×(ΔE×Kp+∑ΔE×K i +ΔE / Δt×K d )(one)

[0035] Wherein, P0 is the power value of the adjacent cycle; dir is the trend value of the characteristic curve for half a cycle, which is 1 when the trend of the half cycle is upward and -1 when the trend of the half cycle is downward.

[0036] According to a fourth aspect of the present invention, a signal control device is provided for a control system having a single input signal and at least one output signal, the signal control device comprising:

[0037] The second acquisition module is used to acquire multiple control parameters of the controller corresponding to the single input signal and at least one output signal corresponding to the control parameters;

[0038] The second characteristic curve establishment module is used to establish a characteristic curve of control parameter-test result based on the control parameters and at least one of the output signals.

[0039] An initial control parameter acquisition module is used to determine the expected test result and the initial control parameters of the controller corresponding to the expected test result based on the characteristic curve.

[0040] The second test result acquisition module is used to acquire the actual test results of the initial control parameters;

[0041] The second adjustment module is used to adjust the control parameters of the controller using proportional-integral-derivative methods based on the initial control parameters, the actual test results, and the expected test results, so that the test results after adjusting the control parameters are consistent with the expected test results.

[0042] According to a fifth aspect of the present invention, a signal control system is provided, comprising a single input signal, at least one output signal, and the signal control device described in the second or fourth aspect of the present invention.

[0043] This invention discloses a signal control method, control device, and control system, applied to a control system with a single input signal and at least one output signal. The signal control method includes: acquiring multiple control parameters of a controller corresponding to the single input signal and at least one output signal corresponding to the control parameters; establishing a characteristic curve of control parameters versus test results based on the multiple control parameters and at least one output signal; determining a desired test result and initial control parameters of the controller corresponding to the desired test result based on the characteristic curve, and recording the monotonicity of the desired test result at the position of the characteristic curve; acquiring the actual test result of the initial control parameters; and adjusting the control parameters of the controller based on the relationship between the monotonicity, the actual test result, and the desired test result, so that the actual test result after adjusting the control parameters is consistent with the desired test result. The signal control method disclosed in this invention establishes a characteristic curve of control parameters versus test results, determines the desired test result and the initial control parameters of the controller corresponding to the desired test result through this characteristic curve, and determines the monotonicity of the desired test result at the position of the characteristic curve, thereby determining the correction direction of the actual control parameters of the controller (i.e., whether to increase or decrease the actual control parameters of the controller to achieve the desired test result), realizing the technical effect that the desired test result can be achieved by adjusting the actual control parameters of the controller.

[0044] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0045] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0046] Figure 1 It is a graph showing the temperature of the light beam versus the splitting ratio in existing technologies;

[0047] Figure 2 This is a schematic diagram of a beam splitting system structure provided in an embodiment of the present invention;

[0048] Figure 3 This is a flowchart of a signal control method provided in an embodiment of the present invention;

[0049] Figure 4 This is a characteristic curve of control parameters and test results (power-split ratio) provided in the embodiments of the present invention;

[0050] Figure 5 This is a flowchart of another signal control method provided in an embodiment of the present invention;

[0051] Figure 6 This is a flowchart of another signal control method provided in an embodiment of the present invention;

[0052] Figure 7 This is a flowchart of another signal control method provided in an embodiment of the present invention;

[0053] Figure 8 This is another characteristic curve diagram of control parameter-test result provided by an embodiment of the present invention;

[0054] Figure 9 This is a schematic diagram of the structure of a signal control device provided in an embodiment of the present invention;

[0055] Figure 10 This is a flowchart of another signal control method provided in an embodiment of the present invention;

[0056] Figure 11 This is a schematic diagram of another signal control device provided in an embodiment of the present invention. Detailed Implementation

[0057] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0058] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0059] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0060] The signal control method provided in this embodiment of the invention is applied to a control system with a single input signal and at least one output signal;

[0061] Control systems with a single input signal and a single output signal, such as: cruise control in a car, where the input is the throttle opening and the output is the actual speed of the vehicle; water tank level control, where the input is the opening of the inlet valve and the output is the water level height of the tank.

[0062] A control system with a single input signal and at least one output signal, such as a beam splitting system, is described in this embodiment of the invention using a beam splitting system as an example to illustrate how the signal is controlled.

[0063] Figure 2 This is a schematic diagram of a beam splitting system provided in an embodiment of the present invention, for reference. Figure 2 The beam splitting system includes a beam splitting component 1, a heater 2, a first photodetector 3, and a second photodetector 4. The heater 2 is connected to the beam splitting component 1. The input end of the beam splitting component 1 is used to receive the beam to be split (i.e., the light emitted from the light source S). The first output end of the beam splitting component 1 is connected to the first photodetector 3, and the second output end of the beam splitting component 1 is connected to the second photodetector 4.

[0064] Among them, heater 2 is a device used to control the temperature of optical elements or system, and the beam splitting ratio of the beam emitted by the light source S is achieved by heating the beam splitting component 1; photodetectors (3 and 4) are used to convert the incident light signal into an electrical signal. Figure 3 This is a flowchart of a signal control method provided in an embodiment of the present invention, for reference. Figure 2 Figure 3 The signal control method provided in this embodiment of the invention includes:

[0065] S101. Acquire multiple control parameters of the controller corresponding to the single input signal and at least one output signal corresponding to the control parameters. Specifically, acquire multiple control parameters of the controller corresponding to the single input signal. For example, heat the beam splitting component 1 through the heater 2, acquire the power of the heater 2, and simultaneously acquire the first electrical signal of the first photodetector 3 and the second electrical signal of the second photodetector 4 (acquire at least one output signal corresponding to the control parameters; for example, this embodiment of the invention uses two as an example, namely the first electrical signal and the second electrical signal). Repeat this process to acquire the power of multiple heaters 2, and multiple first electrical signals of the first photodetector 3 corresponding to the power of each heater 2 and multiple second electrical signals of the second photodetector 4 corresponding to the power of each heater 2.

[0066] S102. Establish a characteristic curve of control parameters versus test results based on multiple control parameters and at least one output signal. Specifically, establish a characteristic curve of control parameters versus test results based on the multiple control parameters (multiple power values ​​of heater 2) and at least one output signal (first electrical signal and second electrical signal) obtained in step S101 above; for example, based on the multiple power values ​​of heater 2, multiple first electrical signals of the first photodetector 3, and multiple second electrical signals of the second photodetector 4 obtained in step S101 above,

[0067] The ratio between the first electrical signal transmitted by the first photodetector and the second electrical signal transmitted by the second photodetector is calculated, which is the beam splitting ratio (the test result mentioned in the embodiment of the present invention). Similarly, the power of multiple heaters, the first electrical signals of multiple first photodetectors, and the second electrical signals of multiple second photodetectors are obtained. With the power of the heater as the abscissa and the beam splitting ratio (test result) as the ordinate, a characteristic curve of beam power (single input signal of the embodiment of the present invention) - beam splitting ratio (test result of the embodiment of the present invention) is established.

[0068] S103. Determine the desired test result and the initial control parameters of the controller corresponding to the desired test result based on the characteristic curve, and record the monotonicity of the desired test result at the position on the characteristic curve. Specifically, Figure 4 This is a power (control parameter of this embodiment) - splitting ratio (test result of this embodiment) characteristic curve provided by an embodiment of the present invention, for reference. Figure 4Based on the power-splitting ratio characteristic curve (control parameter-test result characteristic curve) established in step S102 above, select a target splitting ratio (expected test result) (e.g., a target splitting ratio (expected test result) of 50:50), and find the initial power (initial control parameter) of heater 2 corresponding to the target splitting ratio (expected test result) of the beam through this characteristic curve. Record the monotonicity of the target splitting ratio (expected test result) in this characteristic curve. The monotonicity can be monotonically increasing (i.e., as the power of heater 2 increases (as the initial control parameter of the controller increases), the splitting ratio of the beam (i.e., the test result) increases) or monotonically decreasing (i.e., as the power of heater 2 increases (as the initial control parameter of the controller increases), the splitting ratio of the beam (test result) decreases, i.e., as... Figure 4 As shown, the trend is downward (i.e., monotonically decreasing), where the maximum splitting ratio of the beam is at the position of Max, and the minimum splitting ratio of the beam is at the position of Min.

[0069] Optionally, to further determine the monotonicity, a window can be opened at the location of the target spectral ratio. That is, multiple power (control parameters) and corresponding spectral ratio (test results) data of heater 2 can be collected near the location of the target spectral ratio (expected test result). By judging the trend of these multiple sets of data, the monotonicity at the location of the target spectral ratio (expected test result) can be determined.

[0070] S104. Obtain the actual test results of the initial control parameters. Specifically, after determining the monotonicity of the target splitting ratio (expected test result) in step S103 above, substitute the target splitting ratio (expected test result) into the characteristic curve, obtain the initial power of the heater (initial control parameter), adjust the power (control parameter) of heater 2 to the initial power (initial control parameter), obtain the first electrical signal (first output signal) of the first photodetector and the second electrical signal (second output signal) of the second photodetector, and the ratio between the first electrical signal and the second electrical signal is the actual splitting ratio (actual test result) of the beam.

[0071] S105. Adjust the controller's control parameters based on the relationship between monotonicity, actual test results, and expected test results to ensure that the actual test results after adjusting the control parameters are consistent with the expected test results. Specifically, in the above steps, the monotonicity of the target splitting ratio (expected test result), the actual splitting ratio (actual test result) corresponding to the initial power of heater 2 (initial control parameters), and the target splitting ratio of the beam (expected test result) are obtained. For example, if the target splitting ratio is 50:50, the initial power of heater 2 is 1kW. When the power of heater 2 is adjusted to 1kW, the corresponding actual splitting ratio is 55:45. At this time, the monotonicity of the target splitting ratio on the power-splitting ratio characteristic curve (the characteristic curve of control parameters-test results) is monotonically increasing. Therefore, when the power of heater 2 is adjusted to 0.9kW, the corresponding actual splitting ratio is 50:50. This ensures that the actual splitting ratio corresponding to adjusting the power of heater 2 is consistent with the target splitting ratio, i.e., both are 50:50.

[0072] The signal control method provided in this embodiment of the invention establishes a characteristic curve of control parameters and test results. Through this characteristic curve, the desired test result and the initial control parameters of the controller corresponding to the desired test result are determined, as well as the monotonicity of the desired test result at the position of the characteristic curve. This determines the correction direction of the actual control parameters of the controller (i.e., whether to increase or decrease the actual control parameters of the controller to achieve the desired test result). This achieves the technical effect that the desired test result can be achieved by adjusting the actual control parameters of the controller.

[0073] Based on the above embodiments of the invention, the embodiments of the present invention further refine the determination of the desired test result and the initial control parameters of the controller corresponding to the desired test result according to the characteristic curve. Figure 5 This is a flowchart of another signal control method provided in an embodiment of the present invention, for reference. Figure 5 The signal control method provided in this embodiment of the invention includes:

[0074] S201. Acquire multiple powers of the heater and multiple first electrical signals of the first photodetector and multiple second electrical signals of the second photodetector corresponding to the power.

[0075] S202. Establish a characteristic curve of control parameters and test results based on multiple control parameters and at least one output signal.

[0076] S203. Substitute the expected test results into the characteristic curve to obtain the initial control parameters of the controller corresponding to the expected test results.

[0077] Specifically, the characteristic curve of the power-splitting ratio of the beam (the characteristic curve of the control parameter-test result) is periodically distributed. By substituting the target splitting ratio (expected test result) that the beam wants to achieve into this characteristic curve, the initial power (initial control parameter) of the heater (controller) corresponding to the target splitting ratio (expected test result) of the beam can be obtained.

[0078] S204. Obtain the actual test results of the initial control parameters.

[0079] S205. Adjust the controller's control parameters according to the monotonicity, the relationship between the actual test results and the expected test results, so that the actual test results after adjusting the control parameters are consistent with the expected test results.

[0080] Based on the above embodiments of the invention, the embodiments of the present invention further refine the actual test results for obtaining initial control parameters. Figure 6 This is a flowchart of another signal control method provided in an embodiment of the present invention, for reference. Figure 6 The signal control method provided in this embodiment of the invention includes:

[0081] S301. Obtain multiple control parameters of the controller corresponding to a single input signal and at least one output signal corresponding to the control parameters.

[0082] S302. Establish a characteristic curve of control parameters and test results based on multiple control parameters and at least one output signal.

[0083] S303. Substitute the expected test results into the characteristic curve to obtain the initial control parameters of the controller corresponding to the expected test results.

[0084] S304, The controller operates with the initial control parameters.

[0085] Specifically, the target splitting ratio (expected test result) determined in step S303 above, and the initial power (initial control parameter) of the heater corresponding to the target splitting ratio (expected test result) of the beam in the characteristic curve, are adjusted to the initial power (initial control parameter) so that the heater operates according to the initial power (initial control parameter).

[0086] S305. Obtain the actual test results of the controller running with the initial control parameters.

[0087] Specifically, after the heater operates at the initial power (initial control parameters), the actual beam splitting ratio (actual test result) is simultaneously acquired; wherein, the actual beam splitting ratio is the ratio of the electrical signal acquired by the first photodetector to the electrical signal acquired by the second photodetector.

[0088] S306. Adjust the controller's control parameters according to the relationship between monotonicity, actual test results, and expected test results, so that the actual test results after adjusting the control parameters are consistent with the expected test results.

[0089] Based on the above embodiments, this invention further refines the adjustment of the controller parameters according to the relationship between monotonicity, actual test results, and expected test results, so that the actual test results after adjusting the control parameters are consistent with the expected test results. Figure 7 This is a flowchart of another signal control method provided in an embodiment of the present invention, for reference. Figure 7 The signal control method provided in this embodiment of the invention includes:

[0090] S401. Obtain multiple control parameters of the controller corresponding to a single input signal and at least one output signal corresponding to the control parameters.

[0091] S402. Establish a characteristic curve of control parameters and test results based on multiple control parameters and at least one output signal.

[0092] S403. Determine the expected test result and the initial control parameters of the controller corresponding to the expected test result based on the characteristic curve, and record the monotonicity of the expected test result at the position of the characteristic curve.

[0093] S404. Obtain the actual test results of the initial control parameters.

[0094] S405. Adjust the controller's control parameters according to the relationship between monotonicity, actual test results, and expected test results, so that the actual test results after adjusting the control parameters are consistent with the expected test results.

[0095] S4051. When the monotonicity is monotonically decreasing, if the actual test result is less than the expected test result, the control parameter of the controller is reduced; if the actual test result is greater than or equal to the expected test result, the control parameter of the controller is reduced.

[0096] Specifically, in step S403 above, when the monotonicity of the target splitting ratio (expected test result) is determined to be monotonically decreasing, if the actual splitting ratio (actual test result) of the beam corresponding to the obtained heater power is less than the target splitting ratio (expected test result), then the heater power (control parameter) is reduced; if the actual splitting ratio (actual test result) is greater than or equal to the target splitting ratio (expected test result), then the heater power (control parameter) is increased so that the actual splitting ratio (actual test result) of the beam achieved after adjusting the heater power is consistent with the target splitting ratio (expected test result) of the beam.

[0097] S4052. When the monotonicity is monotonically increasing, if the actual test result is less than the expected test result, the control parameter of the controller is increased; if the actual test result is greater than or equal to the expected test result, the control parameter of the controller is decreased.

[0098] Specifically, in step S503 above, when the monotonicity of the target splitting ratio (expected test result) is determined to be monotonically increasing, if the actual splitting ratio (actual test result) of the beam corresponding to the obtained heater power (control parameter) is less than the target splitting ratio (expected test result), then the heater power (control parameter) is increased; if the actual splitting ratio (actual test result) is greater than or equal to the target splitting ratio (expected test result), then the heater power (control parameter) is decreased so that the actual splitting ratio (actual test result) of the beam achieved after adjusting the heater power is consistent with the target splitting ratio (expected test result) of the beam.

[0099] Figure 8 This is another characteristic curve of control parameter-test result provided in an embodiment of the present invention, for reference. Figure 8 Optionally, when adjusting the controller parameters based on the relationship between monotonicity, actual test results, and expected test results, if the controller parameters corresponding to the actual test results being consistent with the expected test results exceed the controller's maximum tuning range, then the initial control parameters are shifted by half a cycle according to the characteristic curve, and the controller parameters are adjusted again to make the adjusted test results consistent with the expected test results. Specifically, in some specific embodiments of the invention, the calculated heater power may exceed the heater's power range, that is, the calculated heater power is less than the heater's minimum heating power (minimum control parameter) or greater than the heater's maximum heating power (maximum control parameter), such as... Figure 8 As shown, the heater power required to achieve the actual splitting ratio B (actual test result) is less than the minimum heater power. E is the target splitting ratio of the beam (desired test result). Therefore, based on the beam's characteristic curve, the initial power (initial control parameter) is shifted by half a cycle, i.e., shifted to... Figure 8 At point C, adjust the power of the heater so that the actual splitting ratio of the beam after adjusting the heater power (actual test result) matches the target splitting ratio of the beam (expected test result).

[0100] Based on the same inventive concept Figure 9 This is a schematic diagram of a signal control device provided in an embodiment of the present invention, for reference. Figure 9 The present invention also provides a signal control device for a control system with a single input signal and at least one output signal. The signal control device includes:

[0101] The first acquisition module 5 is used to acquire multiple control parameters of the controller and at least one output signal corresponding to the control parameters.

[0102] The first characteristic curve establishment module 6 is used to establish a characteristic curve of control parameters and test results based on control parameters and at least one output signal.

[0103] The first monotonicity determination module 7 is used to determine the expected test result and the initial control parameters of the controller corresponding to the expected test result based on the characteristic curve, and to record the monotonicity of the expected test result at the position of the characteristic curve.

[0104] The first test result acquisition module 8 is used to acquire the actual test results of the initial control parameters.

[0105] The first adjustment module 9 is used to adjust the control parameters of the controller according to the relationship between monotonicity, actual test results and expected test results, so that the test results after adjusting the control parameters are consistent with the expected test results.

[0106] The signal control device provided in this embodiment of the invention can achieve the same technical effect as the signal control method provided in any of the above embodiments of the invention, and will not be described in detail here.

[0107] Based on the same inventive concept, this invention provides a signal control method applied to a control system with a single input signal and at least one output signal. This invention uses a beam splitting system as an example. The beam splitting system includes a beam splitting component, a heater, a first photodetector, and a second photodetector. The heater is connected to the beam splitting component. The input end of the beam splitting component receives the beam to be split. The first output end of the beam splitting component is connected to the first photodetector, and the second output end of the beam splitting component is connected to the second photodetector. (Refer to...) Figure 2 The beam splitting system provided in the embodiments of the present invention has been described in detail above and will not be repeated here; Figure 10 This is a flowchart of another signal control method provided in an embodiment of the present invention, for reference. Figure 10 The signal control method provided in this embodiment of the invention includes:

[0108] S501. Obtain multiple control parameters of the controller corresponding to a single input signal and at least one output signal corresponding to the control parameters.

[0109] S502. Establish a characteristic curve of control parameters and test results based on multiple control parameters and at least one output signal.

[0110] S503. Determine the expected test results and the initial control parameters of the controller corresponding to the expected test results based on the characteristic curve.

[0111] S504. Obtain the actual test results of the initial control parameters.

[0112] S505. Based on the initial control parameters, actual test results, and expected test results, use proportional-integral-derivative adjustment controller parameters to make the actual test results after adjusting the control parameters consistent with the expected test results.

[0113] Among them, proportional-integral-derivative control (PID) minimizes system error (the deviation between the set value and the actual value) by adjusting the output signal in real time.

[0114] Proportional term (P): Adjusts the output value by a certain proportion according to the magnitude of the deviation, so as to reduce the deviation between the output and the expected value.

[0115] Integral term (I): Based on the accumulated amount of deviation, the control output is corrected to eliminate steady-state error.

[0116] Differential term (D): Adjusts the control output based on the rate of change of the deviation, reducing the rate of change of the deviation and improving the stability of the system.

[0117] By comprehensively considering the current deviation, the accumulated amount of deviation, and the rate of change of deviation, the PID control algorithm can effectively adjust the system output, enabling the system to quickly and stably reach the desired state.

[0118] Specifically, based on the initial power of the heater, the actual splitting ratio of the beam, and the target splitting ratio of the beam obtained from the above steps, the power of the heater is adjusted using a proportional-integral-derivative control method.

[0119] Optionally, the power of the heater can be adjusted using proportional-integral-derivative methods, including:

[0120] The feedback regulation power value is calculated using formula (1):

[0121] P=P0+dir×(ΔE×Kp+∑ΔE×K i +ΔE / Δt×K d )(one)

[0122] Where P0 is the power value of the adjacent period; dir is the trend value of the characteristic curve for half a period. When the trend of the half period is upward, it is taken as 1; when the trend of the half period is downward, it is taken as -1.

[0123] Based on the same inventive concept Figure 11 This is a schematic diagram of another signal control device provided in an embodiment of the present invention, for reference. Figure 11This invention provides a signal control device for a control system with a single input signal and at least one output signal. The signal control device includes:

[0124] The second acquisition module 10 is used to acquire multiple control parameters of the controller corresponding to a single input signal and at least one output signal corresponding to the control parameters.

[0125] The second characteristic curve establishment module 11 is used to establish a characteristic curve of control parameters and test results based on control parameters and at least one output signal.

[0126] The initial control parameter acquisition module 12 is used to determine the expected test result and the initial control parameters of the controller corresponding to the expected test result based on the characteristic curve.

[0127] The second test result acquisition module 13 is used to acquire the actual test results of the initial control parameters.

[0128] The second adjustment module 14 is used to adjust the control parameters of the controller using proportional-integral-derivative (PID) based on the initial control parameters, actual test results, and expected test results, so that the test results after adjusting the control parameters are consistent with the expected test results.

[0129] The signal control device provided in this embodiment of the invention can achieve the same technical effect as the signal control method provided in any of the above embodiments of the invention, and will not be described in detail here.

[0130] Based on the same inventive concept, embodiments of the present invention also provide a signal system, including a single input signal, at least one output signal, and the signal control device provided in the above embodiments of the invention.

[0131] The signal control device provided in this embodiment of the invention can achieve the same technical effect as the signal control device provided in any of the above embodiments of the invention, and will not be described in detail here.

[0132] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A signal control method, characterized in that, An application is made in a beam splitting system, wherein the beam splitting system receives a beam to be split emitted by a light source and splits the beam into a first split beam and a second split beam according to a preset splitting ratio, and the signal control method includes: Acquire multiple control parameters of the controller corresponding to the signal of the beam to be split, as well as the signals of the first beam splitting beam and the second beam splitting beam corresponding to the control parameters; A characteristic curve of control parameters versus test results is established based on multiple control parameters, signals from multiple first beam splitters, and signals from multiple second beam splitters; wherein the characteristic curve exhibits a periodic distribution. The expected test result and the initial control parameters of the controller corresponding to the expected test result are determined based on the characteristic curve, and the monotonicity of the expected test result at the position of the characteristic curve is recorded. Obtain the actual test results of the initial control parameters; The control parameters of the controller are adjusted according to the monotonicity, the relationship between the actual test results and the expected test results, so that the actual test results after adjusting the control parameters are consistent with the expected test results.

2. The signal control method according to claim 1, characterized in that, Determining the desired test result and the initial control parameters of the controller corresponding to the desired test result based on the characteristic curve includes: Substituting the expected test result into the characteristic curve, the initial control parameters of the controller corresponding to the expected test result are obtained.

3. The signal control method according to claim 1, characterized in that, Obtaining the actual test results of the initial control parameters includes: Control the controller to operate with the initial control parameters; Obtain the actual test results of the controller running with the initial control parameters.

4. The signal control method according to claim 1, characterized in that, Adjusting the controller's control parameters based on the monotonicity, the relationship between the actual test results and the expected test results, so that the adjusted actual test results match the expected test results, includes: When the monotonicity is monotonically decreasing, if the actual test result is less than the expected test result, the control parameter of the controller is decreased; if the actual test result is greater than or equal to the expected test result, the control parameter of the controller is increased. When the monotonicity is monotonically increasing, if the actual test result is less than the expected test result, the control parameter of the controller is increased; if the actual test result is greater than or equal to the expected test result, the control parameter of the controller is decreased.

5. The signal control method according to claim 4, characterized in that, When adjusting the control parameters of the controller based on the monotonicity, the actual test results, and the expected test results... If the control parameters of the controller exceed the maximum tuning range of the controller when the actual test result is consistent with the expected test result, then the initial control parameters are shifted by half a cycle according to the characteristic curve, and the control parameters of the controller are adjusted so that the adjusted test result is consistent with the expected test result.

6. A signal control device, characterized in that, An application in a beam splitting system, wherein the beam splitting system receives a beam to be split emitted by a light source and splits the beam into a first split beam and a second split beam according to a preset splitting ratio, the signal control device comprising: The first acquisition module is used to acquire multiple control parameters of the controller corresponding to the signal of the beam to be split, as well as the signal of the first beam split and the signal of the second beam split corresponding to the control parameters. The first characteristic curve establishment module is used to establish a characteristic curve of control parameters-test results based on multiple control parameters, signals of multiple first beam splitters, and signals of multiple second beam splitters; wherein the characteristic curve is periodically distributed. The first monotonicity determination module is used to determine the expected test result and the initial control parameters of the controller corresponding to the expected test result based on the characteristic curve, and to record the monotonicity of the expected test result at the position of the characteristic curve. The first test result acquisition module is used to acquire the actual test results of the initial control parameters; The first adjustment module is used to adjust the control parameters of the controller according to the relationship between the monotonicity, the actual test results and the expected test results, so that the test results after adjusting the control parameters are consistent with the expected test results.

7. A signal control method, characterized in that, An application is made in a beam splitting system, wherein the beam splitting system receives a beam to be split emitted by a light source and splits the beam into a first split beam and a second split beam according to a preset splitting ratio, and the signal control method includes: Acquire multiple control parameters of the controller corresponding to the signal of the beam to be split, as well as the signals of the first beam splitting beam and the second beam splitting beam corresponding to the control parameters; A characteristic curve of control parameters versus test results is established based on multiple control parameters, signals from multiple first beam splitters, and signals from multiple second beam splitters; wherein the characteristic curve exhibits a periodic distribution. The expected test result and the initial control parameters of the controller corresponding to the expected test result are determined based on the characteristic curve. Obtain the actual test results of the initial control parameters; Based on the initial control parameters, the actual test results, and the expected test results, the control parameters of the controller are adjusted using proportional-integral-derivative (PID) methods so that the test results after adjusting the control parameters are consistent with the expected test results.

8. The signal control method according to claim 7, characterized in that, Adjusting the control parameters of the controller using proportional-integral-derivative (PI) methods includes: The feedback regulation power value is calculated using formula (1): P = P0 + dir × (ΔE × Kp + ∑ΔE × K i + ΔE / Δt × K d ) (1) Wherein, P0 is the power value of the adjacent cycle; dir is the trend value of the characteristic curve for half a cycle, which is 1 when the trend of the half cycle is upward and -1 when the trend of the half cycle is downward.

9. A signal control device, characterized in that, An application in a beam splitting system, wherein the beam splitting system receives a beam to be split emitted by a light source and splits the beam into a first split beam and a second split beam according to a preset splitting ratio, the signal control device comprising: The second acquisition module is used to acquire multiple control parameters of the controller corresponding to the signal of the beam to be split, as well as the signals of the first beam split and the second beam split corresponding to the control parameters. The second characteristic curve establishment module is used to establish a characteristic curve of control parameters-test results based on multiple control parameters, signals of multiple first beam splitters, and signals of multiple second beam splitters; wherein the characteristic curve is periodically distributed. An initial control parameter acquisition module is used to determine the expected test result and the initial control parameters of the controller corresponding to the expected test result based on the characteristic curve. The second test result acquisition module is used to acquire the actual test results of the initial control parameters; The second adjustment module is used to adjust the control parameters of the controller using proportional-integral-derivative methods based on the initial control parameters, the actual test results, and the expected test results, so that the test results after adjusting the control parameters are consistent with the expected test results.

10. A signal control system, characterized in that, It includes a single input signal, at least one output signal, and the signal control device as described in claim 6 or 9.

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