Configurable actuating mechanism characteristic simulation equipment, test system and test method

Abstract

The invention discloses a configurable actuating mechanism characteristic simulation device, a test system and a test method, the configurable actuating mechanism characteristic simulation device comprises a sampling circuit, an execution controller, a computer, an output circuit and a display circuit, the sampling circuit is used for collecting a first analog signal output by a driver, and the display circuit is used for displaying the first analog signal output by the driver; performing digital processing on the collected first analog signal to obtain a first digital signal and outputting the first digital signal to the execution controller; the computer is used for controlling the display circuit to display a parameter configuration interface, acquiring a parameter configuration value in response to the operation of a user on the parameter configuration interface, and outputting the parameter configuration value to the execution controller; the execution controller is used for obtaining a second digital signal according to the parameter configuration value, the first digital signal and a feedback formula and outputting the second digital signal to the output circuit; and the output circuit is used for converting the second digital signal into a second analog signal to simulate the motion of the actuating mechanism and outputting the second analog signal.

Description

Technical Field

[0001] The present invention relates to the technical field of actuator characteristic simulation, and more specifically, to a configurable actuator characteristic simulation device and a testing method. Background Art

[0002] During the test of the aircraft control system, the actuator needs to be powered on repeatedly to verify the closed-loop control characteristics. Since the actuator is generally a high-power electro-hydraulic linkage or a pure electric structure, a large amount of heat will be generated each time it is powered on. If the heat is not dissipated in time, it is easy to cause structural damage. In addition, even if forced heat dissipation is adopted, the actuator will cause characteristic parameter drift due to temperature rise, resulting in distortion of the entire closed-loop test. For this reason, an actuator characteristic simulation device is designed to replace the real actuator to complete the test.

[0003] In the early design process of actuator characteristic simulation equipment, the circuit design principle and measured characteristics of the actuator were abstracted into a circuit model, which was then converted into an approximate mathematical formula. Then, analog components were used to build amplifier circuits, integration circuits, etc. to simulate the electrical characteristics of the actuator. This method is simple and fast to design and implement, but because the electrical parameters of analog components are fixed with the components and cannot be adjusted at will, each time a simulation characteristic is changed, one or some components must be replaced to adjust the circuit parameters. Therefore, for each control system test, a dedicated device needs to be produced, and after production, if some parameters are modified, the components will be disassembled and replaced at best, or the entire circuit will be scrapped at worst, which lacks flexibility. Summary of the invention

[0004] The present invention provides a configurable actuator characteristic simulation device, a test system and a test method to solve at least one of the problems existing in the prior art.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A first aspect of the present invention provides a configurable actuator characteristic simulation device, the simulation device comprising a sampling circuit, an execution controller, a computer, an output circuit and a display circuit, wherein:

[0007] The sampling circuit is used to collect the first analog signal output by the driver, digitize the collected first analog signal, obtain the first digital signal and output it to the execution controller;

[0008] The computer is used to control the display circuit to display a parameter configuration interface, obtain parameter configuration values ​​in response to user operations on the parameter configuration interface, and output them to the execution controller;

[0009] The execution controller is used to obtain the second digital signal according to the parameter configuration value, the first digital signal and the feedback formula, and output it to the output circuit;

[0010] The output circuit is used to convert the second digital signal into a second analog signal to simulate the movement of the actuator, and output the second analog signal.

[0011] Optionally, the display circuit is also used to display the second analog signal output by the output circuit.

[0012] A second aspect of the present invention provides a test system, the test system comprising the configurable actuator characteristic simulation device, a controller and a driver as described above,

[0013] The controller is used to receive the second analog signal output by the output circuit, and convert the second analog signal into a current signal to control the driver to output the first analog signal.

[0014] Optionally, the controller is further configured to determine whether the actuator characteristic simulation device has completed simulation according to whether the current signal is within a preset range.

[0015] If the current signal is within the preset range, it is determined that the simulation of the actuator characteristic simulation device is finished;

[0016] If the current signal is outside the preset range, it is determined that the simulation of the actuator characteristic simulation device has not been completed, and the simulation is continued through a prompt message on the computer display configuration interface.

[0017] A third aspect of the present invention provides a testing method, the testing method comprising

[0018] Collecting a first analog signal output by the driver through a sampling circuit, converting the first analog signal into a first digital signal, and outputting the first digital signal to an execution controller;

[0019] Displaying a parameter configuration interface via a computer, acquiring parameter configuration values ​​in response to user operations on the parameter configuration interface, and outputting the values ​​to an execution controller;

[0020] The execution controller obtains a second digital signal according to the parameter configuration value, the first digital signal and the feedback formula, and outputs the second digital signal to the output circuit;

[0021] The output circuit receives the second digital signal output by the actuator controller, converts the second digital signal into a second analog signal to simulate the movement of the actuator characteristic simulation device, and outputs the second analog signal.

[0022] Optionally, the testing method further comprises

[0023] The second analog signal output by the output circuit is displayed through the display circuit to observe whether the parameters after configuration and the output analog signal are correct.

[0024] Optionally, the acquiring of parameter configuration values ​​in response to the user's operation on the parameter configuration interface includes:

[0025] The display circuit is controlled by a computer to display a parameter configuration interface, and the user configures the parameters of the parameter configuration interface according to the parameters required by the execution controller to obtain parameter configuration values.

[0026] Optionally, the testing method further comprises

[0027] The parameter configuration value is displayed through the display circuit to observe whether the configured parameter configuration value is correct.

[0028] Optionally, the testing method further comprises

[0029] The output circuit outputs the second analog signal to the controller, and the controller converts the second analog signal into a current signal to control the driver, and determines whether the actuator characteristic simulation device has finished simulation according to the current signal.

[0030] The beneficial effects of the present invention are as follows:

[0031] The present invention controls the display circuit to display the parameter configuration interface through a computer, configures the parameters required by the execution controller to meet the needs of the execution controller, has flexibility, can realize the use of one simulation device to meet the test of various types of control systems, and has good versatility; the present invention sets the display circuit to display the second analog signal output by the output circuit and the parameter configuration value output by the computer, so as to observe whether the parameters and the second analog signal are correct after configuration; compared with the analog circuit built entirely with components, the present invention is more flexible in the method of realizing proportional relationship setting, has a wide setting range, and when changing the proportional relationship, there is no need to change the circuit components, and the user only needs to input the parameter value in the parameter configuration interface, and no software programming is required. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings.

[0033] Figure 1 A schematic diagram showing a configurable actuator characteristic simulation device of the present invention;

[0034] Figure 2 A schematic diagram showing a parameter configuration interface of the present invention. DETAILED DESCRIPTION

[0035] In order to more clearly illustrate the present invention, the present invention is further described below in conjunction with preferred embodiments and accompanying drawings. Similar components in the accompanying drawings are represented by the same reference numerals. It should be understood by those skilled in the art that the content specifically described below is illustrative rather than restrictive, and should not be used to limit the scope of protection of the present invention.

[0036] The present invention provides a configurable actuator characteristic simulation device, a test system and a test method. Based on the characteristics of a sampling circuit with fast sampling speed, wide signal bandwidth and programmable input-output relationship, a configurable actuator characteristic simulation device is constructed by using a sampling circuit. Parameters can be flexibly set according to different test requirements, so that one actuator characteristic simulation device can meet the test of multiple control systems and has good versatility.

[0037] The present invention provides a configurable actuator characteristic simulation device, which includes a sampling circuit, an execution controller, a computer, an output circuit and a display circuit, wherein:

[0038] A sampling circuit is used to collect a first analog signal output by the driver, digitize the collected first analog signal, obtain a first digital signal and output it to the execution controller;

[0039] The computer controls the display circuit to display a parameter configuration interface, configures the parameters required by the execution controller in response to the user's operation on the parameter configuration interface, and outputs the parameters to the execution controller;

[0040] The display circuit displays the parameter configuration values ​​after configuration;

[0041] An execution controller, configured to obtain a second digital signal according to the parameter configuration value, the first digital signal and a feedback formula, and output the second digital signal to an output circuit;

[0042] The feedback formula is

[0043] V 2 =a×V 1 +c,

[0044] Among them, V 2 represents the second digital signal, a represents the feedback coefficient in the parameter configuration interface, V 1 represents the first digital signal output by the sampling circuit, and c represents an adjustable value set by the user.

[0045] The output circuit is used for converting the second digital signal into a second analog signal to simulate the movement of the actuator, and outputting the second analog signal.

[0046] The display circuit is also used to display the second analog signal output by the output circuit to observe whether the second analog signal is correct.

[0047] In a specific embodiment, Figure 1 As shown, the simulation device includes a sampling circuit 2, an execution controller 3, a computer 8, an output circuit 5 and a display circuit 6, wherein:

[0048] The sampling circuit 2 is connected to the driver via a cable 1 , receives a first analog signal output by the driver, digitizes the first analog signal, obtains a first digital signal, and outputs the first digital signal to the execution controller 3 .

[0049] The computer 8 controls the display circuit 6 to display the parameter configuration interface. The user operates the parameter configuration interface according to the requirements of the execution controller 3, modifies the parameter value, obtains the parameter configuration value, saves the configured parameter configuration value, and sends the parameter configuration value to the execution controller 3 through the cable 4;

[0050] The execution controller 3 receives the first digital signal output by the sampling circuit 2 and the parameter configuration value issued by the computer 8, performs calculations according to the feedback formula in the parameter configuration value, obtains the second digital signal, realizes the association of the characteristic relationship between the input and output, outputs the second digital signal to the output circuit 5, converts the second digital signal into a second analog signal through the output circuit 5 to realize the movement of the simulated actuator characteristic simulation device, outputs the second analog signal, and sends the second analog signal back to the controller through the cable 7 to realize closed-loop negative feedback.

[0051] The output circuit 5 also transmits the second analog signal to the display circuit 6, which displays the second analog signal output by the output circuit 5 and the parameter configuration value output by the computer 8, so as to observe whether the parameter configuration values ​​and the second analog signal are correct after configuration.

[0052] The connection relationship of the actuator characteristic simulation device is as follows: the output end of the sampling circuit 2 is connected to the first input end of the execution controller 3, the output end of the execution controller 3 is connected to the input end of the output circuit 5, the first output end of the computer 10 is connected to the second input end of the execution controller 3, and the second output end of the computer 10 is connected to the first input end of the display circuit 6; the first output end of the output circuit 5 is connected to the input end of the controller, and the second output end of the output circuit 5 is connected to the second input end of the display circuit 6.

[0053] A second aspect of the present invention provides a test system, the test system comprising the configurable actuator characteristic simulation device, a controller and a driver as described above,

[0054] The controller is used for receiving the second analog signal output by the output circuit, and converting the second analog signal into a current signal to control the driver to output the first analog signal.

[0055] The controller is also used to determine whether the actuator characteristic simulation device has completed simulation according to whether the current signal is within a preset range.

[0056] If the current signal is within the preset range, it is determined that the simulation of the actuator characteristic simulation device is finished; at this time, a first display box pops up through the display circuit, displaying a prompt message "The current signal is within the preset range".

[0057] If the current signal is outside the preset range, it is determined that the simulation of the actuator characteristic simulation device has not been completed. The simulation continues through the prompt information of the computer display configuration interface until the simulation of the actuator characteristic simulation device is completed. At this time, a second display box pops up through the display circuit, displaying the prompt information "The current signal is outside the preset range".

[0058] The user can perform operations according to the prompt information displayed in the first display frame and the second display frame.

[0059] In this embodiment, the test system can be a test system for an aircraft control system. The output voltage value of the driver and the current value required by the controller can be set in a proportional relationship by software programming. Compared with an analog circuit built entirely with components, this method of setting the proportional relationship is more flexible and has a wider setting range. When changing the proportional relationship, there is no need to change the circuit components.

[0060] A third aspect of the present invention provides a testing method, the testing method comprising

[0061] Collecting a first analog signal output by the driver through a sampling circuit, converting the first analog signal into a first digital signal, and outputting the first digital signal to an execution controller;

[0062] Controlling the display circuit to display the parameter configuration interface through a computer, obtaining the parameter configuration value in response to the user's operation on the parameter configuration interface, and outputting it to the execution controller;

[0063] The display circuit is controlled by a computer to display a parameter configuration interface, and the user configures the parameters of the parameter configuration interface according to the parameters required by the execution controller to obtain parameter configuration values;

[0064] The parameter configuration value is displayed through the display circuit to observe whether the configured parameter configuration value is correct.

[0065] The execution controller obtains a second digital signal according to the parameter configuration value, the first digital signal and the feedback formula, and outputs the second digital signal to the output circuit;

[0066] The feedback formula is

[0067] V 2 =a×V 1 +c,

[0068] Among them, V 2 represents the second digital signal, a represents the feedback coefficient in the parameter configuration interface, V 1 represents the first digital signal output by the sampling circuit, and c represents an adjustable value set by the user.

[0069] The output circuit receives the second digital signal output by the actuator controller, converts the second digital signal into a second analog signal to simulate the movement of the actuator characteristic simulation device, and outputs the second analog signal.

[0070] The display circuit also displays the second analog signal output by the output circuit to observe whether the second analog signal is correct.

[0071] The output circuit outputs the second analog signal to the controller, and the controller converts the second analog signal into a current signal to control the driver, and determines whether the actuator characteristic simulation device has finished simulation according to the current signal.

[0072] In a specific embodiment, the testing method comprises

[0073] The sampling circuit 2 collects the voltage value output by the driver through the cable 1, and the voltage value is the first analog signal. The collected voltage value is digitized to obtain the first digital signal and then transmitted to the execution controller 3;

[0074] like Figure 2 , the computer 10 controls the display circuit 6 to display the parameter configuration interface, and the user inputs the required parameters in the parameter configuration interface according to the requirements of the execution controller 3 to complete the parameter configuration, and the configured parameter configuration values ​​are transmitted to the execution controller 3 through the cable 4;

[0075] The display circuit 6 displays the configured parameter configuration values ​​to observe whether the parameter configuration values ​​are correct.

[0076] Preferably, the input range in the parameter configuration interface can be -5V to +5V, the input threshold can be -6V to +6V, the feedback coefficient a can be -0.75, and the feedback formula is V 2 =a×V 1 +c, where V 2 is the second digital signal output by the execution controller, V 1 is the first digital signal output by the sampling circuit, c is the adjustment value, which can be modified according to the actual situation, the output delay can be 2ms, the output range can be -5V~+5V, and optionally, the feedback formula can be V 2 =-0.75×V 1 +0.003.

[0077] The execution controller 3 performs calculations through the parameter configuration value and the first digital signal and the feedback formula in the parameter configuration interface to obtain the second digital signal, realize the association of the input-output characteristic relationship, and output the second digital signal as the calculation result to the output circuit 5;

[0078] The output circuit 5 is connected to the controller and the display circuit 6. The output circuit 5 converts the second digital signal into a second analog signal and sends it back to the controller through the cable 7 to complete the closed-loop input. The output circuit 5 also transmits the second analog signal to the display circuit 6.

[0079] The display circuit 6 displays the second analog signal output by the output circuit 5 to observe whether the output second analog signal is correct.

[0080] The output circuit 5 outputs the second analog signal to the controller, and the controller converts the second analog signal into a current signal to control the driver to output the first analog signal;

[0081] The current signal is used as a calculation result to determine whether the actuator characteristic simulation device has completed simulation;

[0082] If the current signal is within the preset range, it is determined that the simulation of the actuator characteristic simulation device is finished;

[0083] If the current signal is outside the preset range, it is determined that the simulation of the actuator characteristic simulation device has not been completed, and the simulation is continued through the prompt information of the computer display configuration interface.

[0084] The present invention can realize the use of one simulation device to meet the requirements of various types of control system tests, and has flexibility and good versatility; the present invention is provided with a display circuit to display the second simulation signal and parameter configuration values, so as to observe whether the parameters after configuration and the output second simulation signal are correct.

[0085] In the description of the present invention, it should be noted that the terms "upper", "lower", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present invention. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0086] It should also be noted that, in the description of the present invention, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the statement "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0087] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the protection scope of the present invention.

Claims

1. A configurable actuator characteristic simulation device, characterized in that: The simulation device includes a sampling circuit, an execution controller, a computer, an output circuit and a display circuit, wherein: The sampling circuit is used to collect the first analog signal output by the driver, digitize the collected first analog signal, obtain the first digital signal and output it to the execution controller; The computer is used to control the display circuit to display a parameter configuration interface, obtain parameter configuration values ​​in response to user operations on the parameter configuration interface, and output them to the execution controller; The execution controller is used to obtain the second digital signal according to the parameter configuration value, the first digital signal and the feedback formula, and output it to the output circuit; The output circuit is used to convert the second digital signal into a second analog signal to simulate the movement of the actuator, and output the second analog signal.

2. The actuator characteristic simulation device according to claim 1, characterized in that: The display circuit is also used for displaying the second analog signal output by the output circuit.

3. A testing system, characterized in that: The test system comprises a configurable actuator characteristic simulation device, a controller and a driver as claimed in claim 1 or 2, The controller is used to receive the second analog signal output by the output circuit, and convert the second analog signal into a current signal to control the driver to output the first analog signal.

4. The system according to claim 3, characterized in that The controller is also used to determine whether the actuator characteristic simulation device has finished simulation according to whether the current signal is within a preset range. If the current signal is within the preset range, it is determined that the simulation of the actuator characteristic simulation device is finished; If the current signal is outside the preset range, it is determined that the simulation of the actuator characteristic simulation device has not been completed, and a prompt message of the configuration interface is displayed through the computer.

5. A testing method of the testing system according to claim 3 or 4, characterized in that: The test method includes Collecting a first analog signal output by the driver through a sampling circuit, converting the first analog signal into a first digital signal, and outputting the first digital signal to an execution controller; Displaying a parameter configuration interface via a computer, acquiring parameter configuration values ​​in response to user operations on the parameter configuration interface, and outputting the values ​​to an execution controller; The execution controller obtains a second digital signal according to the parameter configuration value, the first digital signal and the feedback formula, and outputs the second digital signal to the output circuit; The output circuit receives the second digital signal output by the actuator controller, converts the second digital signal into a second analog signal to simulate the movement of the actuator characteristic simulation device, and outputs the second analog signal.

6. The testing method according to claim 5, characterized in that: The testing method further includes displaying the second analog signal output by the output circuit through a display circuit to observe whether the second analog signal is correct.

7. The testing method according to claim 5, characterized in that: The acquiring of parameter configuration values ​​in response to the user's operation on the parameter configuration interface includes: The display circuit is controlled by a computer to display a parameter configuration interface, and the user configures the parameters of the parameter configuration interface according to the parameters required by the execution controller to obtain parameter configuration values.

8. The testing method according to claim 7, characterized in that: The testing method further comprises displaying the parameter configuration value through a display circuit to observe whether the configured parameter configuration value is correct.

9. The testing method according to claim 5, characterized in that: The test method also includes an output circuit outputting a second analog signal to a controller, converting the second analog signal into a current signal through the controller to control a driver, and determining whether the actuator characteristic simulation device has completed simulation based on the current signal.

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