Correction method, device and equipment for gear stepless speed regulation system and storage medium

Abstract

The invention provides a correction method, device and equipment for a gear stepless speed regulation system and a storage medium, and relates to the technical field of diesel engines. The method is applied to a diesel locomotive in a bench test stage, and comprises the following steps: acquiring a rotating speed error of a diesel engine; wherein the rotating speed error is determined according to the actual rotating speed and the expected rotating speed of the diesel engine; when the rotating speed error is out of the first preset interval, a control pulse signal of a driver of the gear stepless speed regulation system is adjusted to adjust the rotating speed error until the adjusted rotating speed error is within a second preset interval; wherein the second preset interval is a subset or equal set of the first preset interval; and according to an adjustment result of the control pulse signal, obtaining a correction parameter of the driver, and according to the correction parameter, correcting the driver in an actual use stage of the diesel locomotive. The problem of how to correct the gear stepless speed regulation system to reduce the rotating speed error when the rotating speed error is relatively high is solved.

Description

Technical Field

[0001] The present application relates to the field of diesel engines, and in particular to a correction method, device, equipment and storage medium for a stepless speed regulation system. Background Art

[0002] Diesel engine speed control is the premise for the normal traction of diesel locomotives. For some diesel locomotives that are not fueled by electronic fuel injection, the diesel engine speed control is realized by a gear-type stepless speed regulation system. The gear-type stepless speed regulation system includes: driver controller, driver and speed regulator. The driver selects a gear through the driver controller. The driver outputs a series of fixed control pulse signals according to the gear signal of the driver controller to drive the stepper motor in the speed regulator to rotate according to a certain rule, thereby controlling the action of the speed regulator and realizing diesel engine speed control.

[0003] Due to the differences between individual speed governors in actual use, when receiving the same control pulse signal, the actual speed of the controlled diesel engine may be different, resulting in a speed error between the actual speed of the diesel engine and the expected speed.

[0004] When the speed error is high, how to correct the stepless speed regulation system to reduce the speed error is an urgent problem to be solved in this application. Summary of the invention

[0005] The present application provides a correction method, device, equipment and storage medium for a stepless speed regulation system, which are used to solve the problem of how to correct the stepless speed regulation system to reduce the speed error when the speed error is high.

[0006] In a first aspect, the present application provides a correction method for a geared stepless speed regulation system, the method being applied to a diesel locomotive in a bench test stage, the diesel locomotive comprising a diesel engine and a geared stepless speed regulation system, the method comprising:

[0007] Obtaining a speed error of the diesel engine; wherein the speed error is determined based on an actual speed and an expected speed of the diesel engine;

[0008] When the speed error is outside the first preset interval, adjusting the control pulse signal of the driver of the geared stepless speed regulation system to adjust the speed error until the adjusted speed error is within a second preset interval; wherein the second preset interval is a subset or an equal set of the first preset interval;

[0009] According to the adjustment result of the control pulse signal, the correction parameter of the driver is obtained, so that the driver can be corrected according to the correction parameter during the actual use stage of the diesel locomotive.

[0010] In a possible design, the control pulse signal of the driver of the stepless speed regulation system is adjusted to adjust the speed error, including:

[0011] Determine the data relationship between the actual speed and the preset speed; wherein the preset speed is determined according to the peak speed of the diesel engine;

[0012] When the actual speed is less than the preset speed, the pulse frequency and pulse direction of the control pulse signal are adjusted to adjust the speed error; wherein the pulse frequency is used to adjust the speed of the stepper motor of the stepless speed regulation system, and the pulse direction is used to adjust the direction of the stepper motor.

[0013] In a possible design, the pulse frequency and pulse direction of the control pulse signal are adjusted to adjust the rotation speed error, including:

[0014] Determine the data relationship between the pulse frequency and the preset frequency; wherein the preset frequency is determined according to the gear position of the controller of the stepless speed regulation system;

[0015] When the pulse frequency is less than the preset frequency, the pulse frequency and pulse direction are adjusted through proportional integral differential control to adjust the speed error.

[0016] In a possible design, when the pulse frequency is not less than a preset frequency, the method further includes:

[0017] Obtaining an operation instruction; wherein the operation instruction is manually input by the driver;

[0018] Adjust the pulse frequency and pulse direction according to the operating instructions to adjust the speed error.

[0019] In a possible design, obtaining the speed error of the diesel engine includes:

[0020] Get the actual speed;

[0021] According to the gear position of the driver controller of the gear-type stepless speed regulation system and the preset gear-speed correspondence, the expected speed is obtained;

[0022] According to the actual speed and the expected speed, the speed error is obtained.

[0023] In a possible design, obtaining the actual rotation speed includes:

[0024] Obtaining speed pulse information from a speed sensor of a diesel engine and / or a speed data message from a microcomputer control cabinet of an internal combustion locomotive;

[0025] The actual speed is obtained according to the speed pulse information and / or the speed data message.

[0026] In a possible design, the stepless speed regulation system further includes: a driver controller;

[0027] According to the adjustment result of the control pulse signal, the correction parameters of the driver are obtained, and according to the correction parameters, the driver is corrected in the actual use stage of the diesel locomotive, including:

[0028] Obtain the adjustment result of the control pulse signal at each gear position of the driver controller;

[0029] According to the multiple adjustment results, correction parameters are obtained, so as to correct the driver at the corresponding gear position in the actual use stage according to the correction parameters.

[0030] In a second aspect, the present application provides a correction device for a geared stepless speed regulation system, the device being applied to a diesel locomotive in a bench test stage, the diesel locomotive comprising a diesel engine and a geared stepless speed regulation system, the device comprising:

[0031] A speed acquisition module, used to acquire the speed error of the diesel engine; wherein the speed error is determined based on the actual speed and the expected speed of the diesel engine;

[0032] A pulse control module, used for adjusting the control pulse signal of the driver of the geared stepless speed regulation system when the speed error is outside the first preset interval, so as to adjust the speed error until the adjusted speed error is within a second preset interval; wherein the second preset interval is a subset or an equal set of the first preset interval;

[0033] The parameter correction module is used to obtain the correction parameters of the driver according to the adjustment result of the control pulse signal, so as to correct the driver according to the correction parameters during the actual use stage of the diesel locomotive.

[0034] In a third aspect, the present application provides an electronic device, comprising: a processor, and a memory communicatively connected to the processor;

[0035] Memory stores computer-executable instructions;

[0036] When the processor executes the computer execution instructions stored in the memory, it is used to implement a correction method for a stepless speed regulation system with gears according to the first aspect.

[0037] In a fourth aspect, the present application provides a computer-readable storage medium, in which computer execution instructions are stored. When the computer execution instructions are executed by a processor, they are used to implement a correction method for a stepless speed regulation system of the first aspect.

[0038] In a fifth aspect, the present application provides a computer program product, including a computer program, which, when executed by a processor, is used to implement a correction method for a stepless speed regulation system of the first aspect.

[0039] The present application provides a correction method, device, equipment and storage medium for a stepless speed regulation system with gears. When the speed error is outside the first preset interval, the control pulse signal of the driver is adjusted to adjust the speed error until the adjusted speed error is within the second preset interval; and according to the adjustment result of the control pulse signal, the correction parameter of the driver is obtained, so as to correct the driver according to the correction parameter in the actual use stage of the diesel locomotive. The following technical effects are achieved: when the speed error is high, the control pulse signal of the driver is adjusted to reduce the speed error, which solves the problem of how to correct the stepless speed regulation system with gears to reduce the speed error; in the actual use stage of the diesel locomotive, the driver is corrected according to the correction parameter, which solves the problem of differences between individual speed governors; in the bench test stage of the diesel locomotive, according to the numerical relationship between the speed error and the first preset interval and the second preset interval, it is determined whether the correction is completed, ensuring the accurate setting of the locomotive output power. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief introduction is given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0041] Figure 1 An application scenario diagram of a correction method for a stepless speed regulation system with gears provided in an embodiment of the application;

[0042] Figure 2 Schematic diagram of the process of the correction method of the stepless speed regulation system provided in the embodiment of the present application Figure 1 ;

[0043] Figure 3 Schematic diagram of the process of the correction method of the stepless speed regulation system provided in the embodiment of the present application Figure 2 ;

[0044] Figure 4 Schematic diagram of the process of the correction method of the stepless speed regulation system provided in the embodiment of the present application Figure 3 ;

[0045] Figure 5 Schematic diagram of the process of the correction method of the stepless speed regulation system provided in the embodiment of the present application Figure 4 ;

[0046] Figure 6 A schematic diagram of the structure of a correction device for a stepless speed regulation system provided in an embodiment of the present application;

[0047] Figure 7A schematic diagram of the structure of an electronic device provided in an embodiment of the present application.

[0048] Reference numerals:

[0049] 110-diesel engine; 121-controller; 122-driver; 123-speed governor; 124-correction device; 130-driver;

[0050] 610-speed acquisition module; 620-pulse control module; 630-parameter correction module;

[0051] 710 - processor; 720 - memory; 730 - communication component; 740 - bus. DETAILED DESCRIPTION

[0052] Exemplary embodiments will be described in detail herein, examples of which are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the embodiments of the present application. Instead, they are merely examples of devices and methods consistent with some aspects of the embodiments of the present application as detailed in the appended claims.

[0053] In the embodiments of the present application, words such as "first" and "second" are used to distinguish between identical or similar items with substantially the same functions and effects. Those skilled in the art will understand that words such as "first" and "second" do not limit the quantity and execution order, and words such as "first" and "second" do not necessarily limit the difference. It should be noted that in the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or explanations. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or design. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way. In the embodiments of the present application, "at least one" refers to one or more, and "more" refers to two or more.

[0054] It should be noted that the "at..." in the embodiment of the present application can be the instant when a certain situation occurs, or it can be a period of time after a certain situation occurs, and the embodiment of the present application does not specifically limit this. In addition, the correction method of a stepless speed regulation system provided in the embodiment of the present application is only used as an example, and the correction method of a stepless speed regulation system can also include more or less content.

[0055] In order to clearly describe the technical solutions of the embodiments of the present application, some terms and technologies involved in the embodiments of the present application are briefly introduced below:

[0056] Non-electronic fuel injection diesel locomotives: refers to diesel locomotives that use non-electronically controlled fuel injection systems. In terms of fuel supply, this type of locomotive does not rely on the Electronic Control Unit (ECU) to accurately control the fuel injection amount, injection time and injection pressure, but uses a more traditional mechanical or hydraulic fuel supply method.

[0057] Driver Controller (DC): The full name is driver controller. As the input device for speed control commands, the driver controller has multiple gears, each of which corresponds to a specific speed range or target speed.

[0058] Speed ​​Controller (SC): As a signal converter for speed control commands, the driver receives the gear position signal from the controller and converts it into a control pulse signal. These control pulse signals are then sent to the stepper motor to drive it to perform stepless speed control.

[0059] Stepper Motor (SM): As the actuator of the speed control command, the stepper motor adjusts its rotation angle or speed according to the received control pulse signal, thereby controlling the action of the speed governor to achieve the adjustment of the diesel engine speed.

[0060] Governor: The executive structure in the governor (such as the fuel supply rod or the speed control rack, etc.) is connected to the stepper motor. When the stepper motor rotates, it drives the executive structure in the governor to move, thereby changing the fuel supply of the injection pump. When the governor is set at any speed, the diesel engine has a corresponding constant speed. No matter how the external load changes, the diesel engine speed remains at a constant value.

[0061] In order to clearly understand the technical solution of the embodiments of the present application, the solution of the prior art is first introduced in detail.

[0062] Diesel engine speed control is the premise for the normal traction of diesel locomotives. For some diesel locomotives that are not fueled by electronic fuel injection, such as Dongfeng 8B (DF8B) diesel locomotives, the diesel engine speed control is realized by a gear-type stepless speed regulation system. The gear-type stepless speed regulation system includes: driver controller, driver and speed governor. The driver selects a gear through the driver controller. The driver outputs a series of fixed control pulse signals according to the gear signal of the driver controller to drive the stepper motor in the speed governor to rotate according to a certain rule, thereby controlling the action of the speed governor and realizing diesel engine speed control.

[0063] Due to the differences between individual speed governors in actual use, the actual speed of the controlled diesel engine may be different when receiving the same control pulse signal, resulting in a speed error between the actual speed of the diesel engine and the expected speed. For example, the DF8B diesel locomotive stipulates that the speed error allowed for each gear is ±10r / min. When the actual speed error of each gear is high (i.e., the speed error is outside ±10r / min), the output power of the diesel engine is determined by the actual speed of the diesel engine, which also brings errors in the output power of the locomotive, which also brings confusion to the power setting.

[0064] Therefore, when the existing stepless speed regulation system has a high speed error, it needs to be corrected to reduce the speed error.

[0065] Based on this, the embodiments of the present application provide a correction method, device, equipment and storage medium for a geared stepless speed regulation system, which can be used in the field of diesel engine technology to solve the above-mentioned problems.

[0066] The following introduces the application scenario of the correction method of the stepless speed regulation system provided in the application embodiment. Figure 1 This is an application scenario diagram of the correction method of the stepless speed regulation system provided in the application embodiment. It should be noted that: Figure 1 What is shown are merely examples of scenarios to which the embodiments of the present application can be applied, to help those skilled in the art understand the technical content of the embodiments of the present application, but it does not mean that the embodiments of the present application cannot be used in other devices, systems, environments or scenarios.

[0067] like Figure 1 As shown, the application scenario includes: a diesel engine 110 mounted on a DF8B type internal combustion locomotive and a stepless speed regulation system. The stepless speed regulation system includes: a controller 121, a driver 122, a speed regulator 123 and a correction device 124.

[0068] The driver 130 riding on the diesel locomotive selects the 8th gear through the driver controller 121 , and the driver 122 controls the rotation of the diesel engine 110 through the speed governor 123 according to the gear position signal of the driver controller 121 .

[0069] The correction device 124 detects that the actual speed of the diesel engine 110 is 695 r / min, but according to the preset gear-speed correspondence, it is known that the idling of the diesel engine 110 is 400 r / min, and the adjacent gear is given a diesel engine speed of 40 r / min. Therefore, the expected speed of the 8th gear should be 680 r / min, and the speed error is 15 r / min, which is outside ±10 r / min.

[0070] Therefore, the correction device 124 corrects the gear-type stepless speed regulation system through the correction method of the gear-type stepless speed regulation system to reduce the speed error. Among them, the correction device 124 is integrated on the circuit board, and is connected to the driver 121 for communication, and is used to obtain the gear position signal of the driver 121; it is also connected to the driver 122 for correcting the gear-type stepless speed regulation system through the driver 122; it is also connected to the speed sensor on the diesel engine 110, and / or the microcomputer control cabinet on the internal combustion engine for obtaining the actual speed of the diesel engine 110. The correction device 124 is an ECU, which can be a microcontroller unit (MCU), a single-chip microcomputer (Single-Chip Microcomputer) or a microprocessor (Microprocessor). The correction device 124 can be dedicated to executing this method, and can also be responsible for the management and control of other systems of the internal combustion engine, such as engine control, body control and transmission control, while executing this method.

[0071] The embodiments of the present application are introduced below in conjunction with the drawings in the specification. Figure 2 Schematic diagram of the process of the correction method of the stepless speed regulation system provided in the embodiment of the present application Figure 1 This method is applied to a diesel locomotive in the bench test stage, wherein the diesel locomotive includes a diesel engine and a stepless speed regulation system; wherein the bench test can be a locomotive water resistance test, which is used to correct the stepless speed regulation system to reduce the speed error of the diesel engine and then adjust the locomotive output power. Figure 2 As shown, the execution subject of the embodiment of the present application is Figure 1 The correction device 124 in the embodiment of the present application comprises the following steps:

[0072] S201. Obtain a speed error of a diesel engine.

[0073] Specifically, the speed error is determined based on the actual speed and the expected speed of the diesel engine. The speed error is equal to the difference between the actual speed and the expected speed, or equal to the absolute value of the difference between the actual speed and the expected speed.

[0074] S202: When the speed error is outside the first preset interval, adjust the control pulse signal of the driver of the stepless speed regulation system to adjust the speed error until the adjusted speed error is within the second preset interval.

[0075] Specifically, when the speed error is equal to the difference between the actual speed and the expected speed, the first preset interval can be [-10r / min, 10r / min]; when the speed error is equal to the absolute value of the difference between the actual speed and the expected speed, the first preset interval can be [0r / min, 10r / min].

[0076] The correction device determines the numerical relationship between the speed error and the first preset interval. When the speed error is within the first preset interval, it means that the speed error is low and will not affect the setting of the locomotive output power in the bench test, so there is no need to correct the geared stepless speed regulation system. When the speed error is outside the first preset interval, it means that the speed error is high, which will affect the setting of the locomotive output power in the bench test; at this time, the correction device can make corrections directly, or make corrections after issuing an alarm, or the driver can make corrections after issuing an alarm; after starting the correction, the correction device generates a correction instruction by itself, or generates a correction instruction according to the driver's operating instruction, adjusts the control pulse signal of the driver, so as to adjust the rotation of the stepper motor in the speed governor, and then adjusts the action of the speed governor, changes the fuel supply of the diesel engine, and thus adjusts the actual speed of the diesel engine to achieve the adjustment of the speed error.

[0077] When the correction device detects that the adjusted speed error is within the second preset interval, it means that the geared stepless speed regulation system has been corrected, and the adjustment of the control pulse signal is stopped. The second preset interval is a subset or equal set of the first preset interval. For example, the second preset interval can be [-10r / min, 10r / min] to ensure the accurate setting of the locomotive output power corresponding to the corrected geared stepless speed regulation system; further, the second preset interval can also be [-5r / min, 5r / min]. Compared with the former, the latter is more accurate in setting the locomotive output power.

[0078] S203. Obtain correction parameters of the driver according to the adjustment result of the control pulse signal, so as to correct the driver according to the correction parameters during the actual use stage of the diesel locomotive.

[0079] Specifically, the adjustment of the control pulse signal can be the adjustment of at least one parameter among multiple parameters such as the number of pulses, pulse width, pulse frequency, pulse amplitude, pulse direction and phase difference. After the correction of the stepless speed regulation system is completed, the correction device records the adjustment result and obtains the correction parameters of the driver based on the adjustment result; wherein, in addition to the adjustment result, the correction parameters may also include information such as correction time, bench test number and speed regulator number. It can be understood that correcting the driver is equivalent to correcting the stepless speed regulation system.

[0080] During the actual use stage of the diesel locomotive, that is, the stage when the diesel locomotive is put into production after passing the bench test and being delivered, the correction device corrects the driver according to the correction parameters and adjusts the control pulse information of the driver to eliminate individual differences of the speed governor.

[0081] Furthermore, the correction parameter may also include multiple speed governor numbers and the adjustment result corresponding to each speed governor number. After the speed governor of the diesel locomotive is replaced, the correction device calls the corresponding adjustment result to correct the driver.

[0082] The embodiment of the present application provides a correction method for a stepless speed regulation system with gears. When the speed error is outside the first preset interval, the control pulse signal of the driver is adjusted to adjust the speed error until the adjusted speed error is within the second preset interval; and according to the adjustment result of the control pulse signal, the correction parameter of the driver is obtained, so as to correct the driver according to the correction parameter in the actual use stage of the diesel locomotive. The following technical effects are achieved: when the speed error is high, the control pulse signal of the driver is adjusted to reduce the speed error, which solves the problem of how to correct the stepless speed regulation system with gears to reduce the speed error; in the actual use stage of the diesel locomotive, the driver is corrected according to the correction parameter, which solves the problem of differences between individual speed regulators; in the bench test stage of the diesel locomotive, according to the numerical relationship between the speed error and the first preset interval and the second preset interval, it is determined whether the correction is completed, ensuring the accurate setting of the locomotive output power.

[0083] Figure 3 Schematic diagram of the process of the correction method of the stepless speed regulation system provided in the embodiment of the present application Figure 2 .like Figure 3 As shown, the correction method of the gear-type stepless speed regulation system provided in the embodiment of the present application is Figure 2 Based on the correction method of the stepless speed regulation system provided in the embodiment, the correction method of the stepless speed regulation system provided in the embodiment is further refined. The correction method of the stepless speed regulation system provided in the embodiment includes the following steps:

[0084] S301, obtaining a speed error of a diesel engine.

[0085] When the speed error is outside the first preset interval, it indicates that the geared stepless speed regulation system needs to be corrected, and then S302 is continued to be executed.

[0086] S302: Determine the data relationship between the actual rotation speed and the preset rotation speed.

[0087] Specifically, the preset speed is determined based on the peak speed of the diesel engine. The preset speed may be equal to the peak speed, or may be calculated based on the peak speed, for example, it may be the product of the peak speed and a safety factor.

[0088] When the actual speed is not less than the preset speed, it may be that the speed error obtained is abnormal, that is, the actual speed is abnormal; it may also be that the diesel engine cannot maintain stable operation due to diesel engine failure, improper driver operation or excessive locomotive load, both of which are not within the consideration scope of this method. When the actual speed is less than the preset speed, it means that the actual speed can be adjusted to correct the gear-type stepless speed regulation system, then continue to execute S303.

[0089] S303, adjusting the pulse frequency and pulse direction of the control pulse signal to adjust the rotation speed error until the adjusted rotation speed error is within a second preset interval.

[0090] Specifically, the speed and direction of the stepper motor strictly depend on the pulse frequency and pulse direction of the control pulse signal. The pulse frequency is used to adjust the speed of the stepper motor in the stepless speed regulation system. The higher the pulse frequency, the faster the motor speed; conversely, the slower the motor speed. The pulse frequency is positively correlated with the number of pulses per unit time. The number of pulses determines the angle of rotation of the stepper motor. Every time the driver outputs a control pulse signal, the stepper motor will rotate a fixed angle, that is, the step angle. The pulse direction is used to adjust the direction of the stepper motor. The pulse direction is the phase sequence of the control pulse signal. By changing the pulse direction, the stepper motor can be made to rotate forward or reverse. Adjust the pulse frequency and pulse direction of the control pulse signal to accurately adjust the rotation of the stepper motor and adjust the speed error.

[0091] S304. Obtain correction parameters of the driver according to the adjustment result of the control pulse signal, and perform correction of the driver according to the correction parameters during the actual use stage of the diesel locomotive.

[0092] The technical effect of the embodiment of the present application is: by controlling the pulse frequency and pulse direction of the pulse signal, the speed and direction of the stepper motor are adjusted, thereby achieving precise adjustment of the stepper motor and further achieving precise adjustment of the speed error.

[0093] In one possible design, the speed error can be adjusted based on closed-loop control or open-loop control. Figure 4 Schematic diagram of the process of the correction method of the stepless speed regulation system provided in the embodiment of the present application Figure 3 .like Figure 4 As shown, the pulse frequency and pulse direction of the control pulse signal are adjusted in S303 to adjust the speed error, including:

[0094] S401, determining the data relationship between the pulse frequency and the preset frequency.

[0095] Specifically, in the existing correction method, when the actual speed is zero, the driver will continuously send control pulse signals to the stepper motor, causing the speed of the stepper motor to continue to rise, thereby causing the diesel engine to run away. To solve this problem, the correction device will limit the maximum pulse frequency to prevent the speed of the stepper motor from continuing to rise.

[0096] by Figure 1 Taking the application scenario shown as an example, the expected speed of the diesel engine is different under different gears of the driver controller, and accordingly, the speed of the stepper motor is also different. Therefore, in order to avoid the diesel engine from running out of control under different gears of the driver controller, the maximum pulse frequency, that is, the preset frequency, is determined according to the gear of the driver controller of the stepless speed regulation system. The preset frequency of different gears can be preset based on experience, or calculated based on the speed of the stepper motor of the corresponding gear, for example, it can be the product of the corresponding speed and a safety factor.

[0097] When the pulse frequency is less than the preset frequency, it means that the actual speed is normal, and the speed error can be adjusted based on closed-loop control, then continue to execute S402; when the pulse frequency is not less than the preset frequency, it means that the actual speed is abnormal, then the speed error is adjusted based on open-loop control, then continue to execute S403 and S404.

[0098] S402, adjusting the pulse frequency and pulse direction through proportional-integral-differential control to adjust the speed error.

[0099] Specifically, in the closed-loop control mode, the correction device collects the gear signal (such as gear code) of the driver controller, determines the expected speed of the diesel engine according to the preset gear-speed correspondence, and then determines the speed error. Then, the pulse frequency and pulse direction of the control pulse signal are adjusted through proportional-integral-derivative (PID) control to adjust the speed error.

[0100] S403: Obtain operation instructions.

[0101] Specifically, the operation instruction is manually input by the driver. The driver inputs the operation instruction that can be recognized by the correction device based on experience and / or instrument display, and the correction device converts the operation instruction into a control signal of the driver so as to adjust the pulse frequency and pulse direction.

[0102] In a possible design, due to the limitation of experience, the reference value of the operation instruction when the actual speed changes greatly is not great. Therefore, the correction device will filter out the operation instruction when the actual speed is unstable to accurately adjust the speed error.

[0103] S404, adjusting the pulse frequency and pulse direction according to the operation instruction to adjust the speed error.

[0104] S404 is similar to S402 and will not be described in detail in this embodiment.

[0105] The technical effect of the embodiment of the present application is: the problem of diesel engine runaway is solved by selecting closed-loop control or open-loop control through pulse frequency.

[0106] Figure 5 Schematic diagram of the process of the correction method of the stepless speed regulation system provided in the embodiment of the present application Figure 4 .like Figure 5 As shown, the correction method of the gear-type stepless speed regulation system provided in the embodiment of the present application is Figures 2 to 4 Based on the correction method of the stepless speed regulation system provided in the embodiment, the correction method of the stepless speed regulation system provided in the embodiment is further refined. The correction method of the stepless speed regulation system provided in the embodiment includes the following steps:

[0107] S501, obtaining speed pulse information of a speed sensor of a diesel engine and / or a speed data message of a microcomputer control cabinet of an internal combustion locomotive.

[0108] Specifically, there are two ways to obtain the actual rotation speed, one is direct acquisition; the other is indirect acquisition.

[0109] Direct acquisition, that is, obtaining the speed pulse information of the speed sensor. The speed sensor can be a magnetoelectric, photoelectric, capacitive or variable reluctance sensor; the sensor can be built-in to the diesel engine, or it can be installed separately later and used for the correction method of the stepless speed regulation system. For example, the diesel engine is integrated with an electromagnetic pulse speed sensor. When the diesel engine rotates, the gears of the diesel engine will periodically pass through the magnetic field of the speed sensor, and the induced electromotive force generated during this period is converted into a pulse signal. The frequency of the pulse signal is positively correlated with the actual speed. After the pulse signal is shaped and limited, the actual speed of the diesel engine can be calculated. The advantage of direct acquisition is that the speed signal is more accurate, and the disadvantage is that numerical calculation is required.

[0110] Indirect acquisition, that is, obtaining the speed data message of the microcomputer control cabinet. Through the communication interface, such as RS422 interface, the speed data message sent by the microcomputer control cabinet to the microcomputer status display screen is received, and the actual speed of the diesel engine can be analyzed. The advantage of indirect acquisition is simplicity and convenience, and the disadvantage is the data delay problem in communication.

[0111] S502: Obtain actual rotation speed according to rotation speed pulse information and / or rotation speed data message.

[0112] Specifically, the correction device can obtain the actual speed through one of the two; it can also obtain the speed values ​​of both at the same time and calculate the actual speed based on them, for example, taking the average value of the two as the actual speed, or taking the more stable value of the two as the actual speed.

[0113] S503, obtaining the expected speed according to the gear position of the driver controller of the stepless speed regulation system and the preset gear position-speed correspondence.

[0114] S504: Obtain a speed error according to the actual speed and the expected speed.

[0115] S505. When the speed error is outside the first preset interval, adjust the control pulse signal of the driver of the stepless speed regulation system to adjust the speed error until the adjusted speed error is within the second preset interval.

[0116] S506, obtaining the adjustment result of the control pulse signal at each gear position of the driver controller.

[0117] S507: Obtain correction parameters according to the multiple adjustment results, and perform correction on the driver according to the correction parameters at the corresponding gear position in the actual use stage.

[0118] Specifically, the correction parameters include the adjustment results under each gear. In the actual use stage, the correction module first determines the gear of the driver controller, and then calls the adjustment result of the corresponding gear in the correction parameters according to the gear, so as to correct the driver according to the called adjustment result.

[0119] The technical effect of the embodiment of the present application is that during the actual use stage of the diesel locomotive, the correction of the driver under different gears is achieved according to the adjustment result corresponding to the gear call of the driver controller.

[0120] The embodiment of the present application can divide the functional modules of the electronic device or the main control device according to the above method example. For example, each functional module can be divided according to each function, or two or more functions can be integrated into one processing unit. The above integrated unit can be implemented in the form of hardware or in the form of software functional modules. It should be noted that the division of modules in the embodiment of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation.

[0121] Figure 6 The present invention also provides a correction device for a stepless speed regulation system, which is applied to a diesel locomotive in the bench test stage. The diesel locomotive includes a diesel engine and a stepless speed regulation system. Figure 6As shown, the correction device of the gear-type stepless speed regulation system comprises:

[0122] The speed acquisition module 610 is used to acquire the speed error of the diesel engine; wherein the speed error is determined based on the actual speed and the expected speed of the diesel engine.

[0123] The pulse control module 620 is used to adjust the control pulse signal of the driver of the stepless speed regulation system when the speed error is outside the first preset interval, so as to adjust the speed error until the adjusted speed error is within the second preset interval; wherein the second preset interval is a subset or an equal set of the first preset interval.

[0124] The parameter correction module 630 is used to obtain the correction parameters of the driver according to the adjustment result of the control pulse signal, so as to correct the driver according to the correction parameters during the actual use stage of the diesel locomotive.

[0125] In one possible design, the pulse control module 620 includes:

[0126] A first determination module is used to determine the data relationship between the actual speed and the preset speed; wherein the preset speed is determined according to the peak speed of the diesel engine;

[0127] The first adjustment module is used to adjust the pulse frequency and pulse direction of the control pulse signal to adjust the speed error when the actual speed is less than the preset speed; wherein the pulse frequency is used to adjust the speed of the stepper motor of the stepless speed regulation system, and the pulse direction is used to adjust the direction of the stepper motor.

[0128] In a possible design, the first adjustment module includes:

[0129] The second judgment module is used to judge the data relationship between the pulse frequency and the preset frequency; wherein the preset frequency is determined according to the gear position of the driver controller of the gear stepless speed regulation system;

[0130] The second adjustment module is used to adjust the pulse frequency and pulse direction through proportional integral differential control when the pulse frequency is less than the preset frequency, so as to adjust the speed error.

[0131] In a possible design, when the pulse frequency is not less than the preset frequency, the correction device of the stepless speed regulation system further includes:

[0132] A first acquisition module is used to acquire an operation instruction, wherein the operation instruction is manually input by the driver;

[0133] The third adjustment module is used to adjust the pulse frequency and pulse direction according to the operation instruction to adjust the rotation speed error.

[0134] In a possible design, the rotation speed acquisition module 610 includes:

[0135] The second acquisition module is used to acquire the actual rotation speed;

[0136] The first calculation module is used to obtain the expected speed according to the gear position of the driver controller of the gear-type stepless speed regulation system and the preset gear position-speed correspondence relationship;

[0137] The second calculation module is used to obtain a rotation speed error according to the actual rotation speed and the expected rotation speed.

[0138] In a possible design, the second acquisition module includes:

[0139] A third acquisition module is used to acquire speed pulse information of a speed sensor of a diesel engine and / or a speed data message of a microcomputer control cabinet of an internal combustion locomotive;

[0140] The third calculation module is used to obtain the actual rotation speed according to the rotation speed pulse information and / or the rotation speed data message.

[0141] In a possible design, the stepless speed regulation system further includes: a driver controller;

[0142] The parameter correction module 630 includes:

[0143] The fourth acquisition module is used to obtain the adjustment result of the control pulse signal at each gear position of the driver controller;

[0144] The fourth calculation module is used to obtain a correction parameter according to the multiple adjustment results, so as to correct the driver according to the correction parameter at the corresponding gear position in the actual use stage.

[0145] A correction device for a stepless speed regulation system provided in an embodiment of the present application can execute a correction method for a stepless speed regulation system in the above embodiment, and its implementation principle and technical effect are similar, so the embodiments of the present application will not be repeated here.

[0146] Figure 7 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application. Figure 7 As shown, an embodiment of the present application further provides an electronic device, the electronic device comprising: at least one processor 710 and a memory 720. The electronic device further comprises a communication component 730. The processor 710, the memory 720 and the communication component 730 are connected via a bus 740.

[0147] In the specific implementation process, at least one processor 710 executes the computer execution instructions stored in the memory 720, so that at least one processor 710 executes a correction method for a geared stepless speed regulation system as executed by the electronic device side as above.

[0148] The specific implementation process of the processor 710 can be found in the above method embodiment, and its implementation principle and technical effect are similar, so this embodiment will not be repeated here.

[0149] In the above embodiments, it should be understood that the processor may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), etc. The general-purpose processor may be a microprocessor or the processor may be any conventional processor, etc. The steps of the method disclosed in the invention may be directly embodied as being executed by a hardware processor, or may be executed by a combination of hardware and software modules in the processor.

[0150] The memory may include a high-speed RAM memory, and may also include a non-volatile storage NVM, such as at least one disk storage.

[0151] The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, the bus in the drawings of this application is not limited to only one bus or one type of bus.

[0152] The above-mentioned functions implemented by the electronic device and the main control device introduce the scheme provided by the embodiment of the present invention. It can be understood that in order to implement the above-mentioned functions, the electronic device or the main control device includes a hardware structure and / or software module corresponding to the execution of each function. In combination with the units and algorithm steps of each example described in the embodiment disclosed in the embodiment of the present invention, the embodiment of the present invention can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in the form of hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the technical solution of the embodiment of the present invention.

[0153] The present application also provides a computer-readable storage medium, in which computer-executable instructions are stored. When a processor executes the computer-executable instructions, it is used to implement a correction method for a stepless speed regulation system as described above.

[0154] The above-mentioned readable storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic disk or optical disk. The readable storage medium can be any available medium that can be accessed by a general or special-purpose computer.

[0155] An exemplary readable storage medium is coupled to a processor so that the processor can read information from the readable storage medium and write information to the readable storage medium. Of course, the readable storage medium can also be a component of the processor. The processor and the readable storage medium can be located in an application specific integrated circuit (ASIC). Of course, the processor and the readable storage medium can also exist as discrete components in an electronic device or a main control device.

[0156] The present application also provides a computer program product, which includes: a computer program, which is stored in a readable storage medium. At least one processor of an electronic device can read the computer program from the readable storage medium, and at least one processor executes the computer program so that the electronic device executes the solution provided by any of the above embodiments.

[0157] Those skilled in the art can understand that all or part of the steps of the above method embodiments can be completed by hardware related to program instructions. The above program can be stored in a computer-readable storage medium. When the program is executed, the steps of the above method embodiments are executed; and the above storage medium includes: ROM, RAM, disk or optical disk and other media that can store program codes.

[0158] So far, the technical solution of the present application has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present application is obviously not limited to these specific embodiments, and the above embodiments are only used to illustrate the technical solution of the present application rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A correction method for a stepless speed regulation system, characterized in that: The method is applied to a diesel locomotive in a bench test stage, wherein the diesel locomotive comprises a diesel engine and a stepless speed regulation system. The method comprises: Obtaining a speed error of the diesel engine; wherein the speed error is determined based on an actual speed and an expected speed of the diesel engine; When the speed error is outside the first preset interval, adjusting the control pulse signal of the driver of the stepless speed regulation system to adjust the speed error until the adjusted speed error is within a second preset interval; wherein the second preset interval is a subset or an equal set of the first preset interval; According to the adjustment result of the control pulse signal, the correction parameter of the driver is obtained, so that according to the correction parameter, the driver is corrected during the actual use stage of the diesel locomotive.

2. The method according to claim 1, characterized in that: The step of adjusting the control pulse signal of the driver of the stepless speed regulation system to adjust the speed error includes: Determining the data relationship between the actual speed and the preset speed; wherein the preset speed is determined according to the peak speed of the diesel engine; When the actual speed is less than the preset speed, the pulse frequency and pulse direction of the control pulse signal are adjusted to adjust the speed error; wherein the pulse frequency is used to adjust the speed of the stepper motor of the stepless speed regulation system, and the pulse direction is used to adjust the direction of the stepper motor.

3. The method according to claim 2, characterized in that The step of adjusting the pulse frequency and pulse direction of the control pulse signal to adjust the rotation speed error includes: Determine the data relationship between the pulse frequency and the preset frequency; wherein the preset frequency is determined according to the gear position of the controller of the stepless speed regulation system; When the pulse frequency is less than the preset frequency, the pulse frequency and the pulse direction are adjusted through proportional-integral-differential control to adjust the rotation speed error.

4. The method according to claim 3, characterized in that When the pulse frequency is not less than the preset frequency, the method further includes: Obtaining an operation instruction; wherein the operation instruction is manually input by the driver; The pulse frequency and the pulse direction are adjusted according to the operation instruction to adjust the rotation speed error.

5. The method according to claim 1, characterized in that The obtaining the speed error of the diesel engine comprises: Obtaining the actual rotation speed; The desired speed is obtained according to the gear position of the driver controller of the stepless speed regulation system and the preset gear position-speed correspondence relationship; The speed error is obtained according to the actual speed and the expected speed.

6. The method according to claim 5, characterized in that The obtaining of the actual rotation speed comprises: Acquire the speed pulse information of the speed sensor of the diesel engine and / or the speed data message of the microcomputer control cabinet of the internal combustion locomotive; The actual speed is obtained according to the speed pulse information and / or the speed data message.

7. The method according to any one of claims 1 to 7, characterized in that: The stepless speed regulation system further comprises: a driver controller; The method of obtaining a correction parameter of the driver according to the adjustment result of the control pulse signal, and correcting the driver according to the correction parameter during the actual use phase of the diesel locomotive, comprises: Obtaining the adjustment result of the control pulse signal at each gear position of the driver controller; The correction parameter is obtained according to the plurality of adjustment results, so as to correct the driver at the corresponding gear position in the actual use stage according to the correction parameter.

8. A correction device for a stepless speed regulation system, characterized in that: The device is applied to a diesel locomotive in a bench test stage, wherein the diesel locomotive comprises a diesel engine and a stepless speed regulation system. The device comprises: A speed acquisition module, used for acquiring a speed error of the diesel engine; wherein the speed error is determined according to an actual speed and an expected speed of the diesel engine; a pulse control module, configured to adjust the control pulse signal of the driver of the stepless speed regulation system when the speed error is outside the first preset interval, so as to adjust the speed error until the adjusted speed error is within a second preset interval; wherein the second preset interval is a subset or an equal set of the first preset interval; The parameter correction module is used to obtain the correction parameters of the driver according to the adjustment result of the control pulse signal, so as to correct the driver according to the correction parameters during the actual use stage of the diesel locomotive.

9. An electronic device, characterized in that: include: A processor, and a memory communicatively connected to the processor; The memory stores computer-executable instructions; When the processor executes the computer-executable instructions stored in the memory, it is used to implement the correction method of the geared stepless speed regulation system as described in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores computer-executable instructions, which, when executed by a processor, are used to implement the correction method for the geared stepless speed regulation system as described in any one of claims 1 to 7.

Images