Retarder testing method, apparatus, electronic device, and storage medium

Abstract

The application discloses a retarder testing method and device, electronic equipment and storage medium. The method comprises the following steps: when the oil of the retarder is in a preset temperature interval, adjusting the retarder speed and the retarder braking torque request value to perform a retarder characteristic test; determining different characteristic parameters obtained by performing the retarder characteristic test under different retarder speeds, and outputting a retarder characteristic result based on the different characteristic parameters. The application ensures that the oil of the retarder is in the preset temperature interval, so that the retarder oil temperature meets the requirements of the retarder characteristic test, and then the different characteristic parameters obtained by performing the retarder characteristic test under different retarder speeds are obtained by adjusting the retarder speed and the retarder braking torque request value, and then the different characteristic parameters are analyzed to obtain an accurate retarder characteristic result, so that the retarder is automatically tested by the retarder test bench, and the experimental result is output, which greatly saves manpower and resources.

Description

Technical Field

[0001] This invention relates to the field of retarder testing technology, and more particularly to a retarder testing method, apparatus, electronic device, and storage medium. Background Technology

[0002] Since complete consistency cannot be guaranteed during the assembly process of retarders, comprehensive bench testing must be conducted during the retarder development and testing phases to ensure the functionality and performance of the retarders. Currently, most bench tests of retarders require manual operation, as it is impossible to automate all tests. Furthermore, a significant amount of time is needed for data processing and analysis after the tests are completed, resulting in substantial waste of time. Summary of the Invention

[0003] This invention provides a method, apparatus, electronic device, and storage medium for testing retarders, enabling automatic testing of retarders via a retarder test bench and outputting experimental results, thereby greatly saving manpower and resources.

[0004] According to one aspect of the present invention, a retarder testing method is provided, applied to a retarder test bench, the method comprising: When the oil in the retarder is in a preset temperature range, the retarder speed and the retarder braking torque request value are adjusted to conduct a retarder characteristic test, which is a test to evaluate the performance of the retarder. Different characteristic parameters are obtained by conducting retarder characteristic tests at different retarder speeds, and based on these different characteristic parameters, retarder characteristic results are output. These retarder characteristic results are used to describe the relationship between the characteristic parameters of the retarder.

[0005] According to another aspect of the present invention, a retarder testing apparatus is provided, the apparatus comprising: The test module is used to adjust the retarder speed and the retarder braking torque request value when the oil in the retarder is in a preset temperature range, so as to conduct a retarder characteristic test, which is a test to test the performance of the retarder. The characteristic result determination module is used to determine different characteristic parameters obtained from retarder characteristic tests at different retarder speeds, and output retarder characteristic results based on the different characteristic parameters. The retarder characteristic results are used to describe the relationship between the characteristic parameters of the retarder.

[0006] According to another aspect of the present invention, an electronic device is provided, the electronic device comprising: At least one processor; and A memory communicatively connected to the at least one processor; wherein, The memory stores a computer program that can be executed by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the retarder testing method according to any embodiment of the present invention.

[0007] According to another aspect of the present invention, a computer-readable storage medium is provided, the computer-readable storage medium storing computer instructions for causing a processor to execute and implement the retarder testing method according to any embodiment of the present invention.

[0008] The technical solution of this invention involves adjusting the retarder speed and braking torque request value when the retarder oil is within a preset temperature range to conduct a retarder characteristic test. Different characteristic parameters obtained from the retarder characteristic test at different retarder speeds are determined, and retarder characteristic results are output based on these parameters. This application ensures that the retarder oil is within a preset temperature range, so that the retarder oil temperature meets the requirements of the retarder characteristic test. Then, by adjusting the retarder speed and braking torque request value, different characteristic parameters are obtained for the retarder characteristic test at different retarder speeds. These different characteristic parameters are then analyzed to obtain accurate retarder characteristic results. This achieves automatic testing of the retarder using a retarder test bench and outputs experimental results, greatly saving manpower and resources.

[0009] 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

[0010] 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.

[0011] Figure 1 This is a flowchart of a retarder testing method provided according to an embodiment of the present invention; Figure 2 This is a schematic diagram of the structure of a retarder test bench applicable to an embodiment of the present invention; Figure 3 This is a flowchart of a retarder testing method provided according to an embodiment of the present invention; Figure 4 This is a schematic diagram of the structure of a retarder testing device according to an embodiment of the present invention; Figure 5This is a schematic diagram of the structure of an electronic device that implements the retarder testing method of this invention. Detailed Implementation

[0012] 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.

[0013] It should be noted that the terms "first," "second," "third," and "fourth," 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.

[0014] Example 1 Figure 1 This is a flowchart illustrating a retarder testing method provided in an embodiment of the present invention. This embodiment is applicable to testing retarders that have not yet left the factory. The method can be executed by a retarder testing device, which can be implemented in hardware and / or software. This retarder testing device can be configured in an electronic device that has a retarder testing method. Figure 1 As shown, the method includes: S110. When the oil in the retarder is in a preset temperature range, the retarder speed and the retarder braking torque request value are adjusted to conduct a retarder characteristic test, which is a test to test the performance of the retarder.

[0015] Figure 2This is a schematic diagram of the structure of a retarder test bench applicable to embodiments of the present invention. The structure includes a retarder test bench, a retarder, a cooling water tank, a camera, a host computer, and a control handle. The retarder is connected to the test bench drive motor. The heat exchanger at the rear end of the retarder is connected to the cooling water tank via hoses; one hose is the cold water inlet pipe, and the other is the hot water outlet pipe. The host computer is connected to the cooling water tank controller via a CAN bus. The cooling water controller is connected to a valve to control its opening. The controllers exchange information according to the SAE J1939 protocol to achieve real-time control of the cooling water flow and temperature. The camera is positioned and fixed to the side of the retarder. It continuously monitors changes in liquid level and oil / gas spray during the test. The camera communicates with the host computer via an RS485 data cable, transmitting information. The image information from the camera is sent to the control software controlling the test platform, synchronizing image information and control commands. This facilitates observation of the retarder's status and the corresponding changes in control commands during the test, allowing designers to better understand the retarder's actions under different operating conditions. The retarder controller is hardwired to the host computer via a control handle. The host computer can request any torque percentage from 0% to 100% to brake the retarder, or the handle can be used to request fixed torque levels (25%, 50%, 75%, 100%). The response time of the retarder can be compared using different control methods.

[0016] The preset temperature range is the optimal temperature range for the retarder characteristic test, for example, 80℃-160℃. The retarder characteristic test includes retarder torque characteristic test, no-load loss test, response time test, and life test. Different tests correspond to different ways of adjusting the retarder speed and retarder braking torque request values. The four tests can be completed automatically in sequence or run automatically individually.

[0017] Specifically, by controlling the flow rate and circulating water temperature of the cooling water tank in the retarder test bench, the oil in the retarder is kept within a preset temperature range. This ensures that the oil in the retarder is always within the optimal temperature range for the test, thereby adjusting the retarder speed and the retarder braking torque request value to conduct a retarder characteristic test.

[0018] S120. Determine the different characteristic parameters obtained from the retarder characteristic test at different retarder speeds, and output the retarder characteristic results based on the different characteristic parameters. The retarder characteristic results are used to describe the relationship between the characteristic parameters of the retarder.

[0019] Specifically, determine which type of retarder characteristic test needs to be performed, then adjust the retarder speed and retarder braking torque request values ​​accordingly, and then transmit the characteristic parameters output during the adjustment process to the host computer in real time. The host computer further filters and analyzes these characteristic parameters to obtain the retarder characteristic results corresponding to the current retarder characteristic test.

[0020] Optionally, the system can receive images of liquid level changes and oil / gas spray conditions captured by a camera in the retarder test bench during the retarder characteristic test. These images can be combined with the retarder characteristic results to determine the state of the retarder, enabling designers to better understand the retarder's actions when switching between different operating conditions.

[0021] The technical solution of this invention involves adjusting the retarder speed and braking torque request value when the retarder oil is within a preset temperature range to conduct a retarder characteristic test. Different characteristic parameters obtained from the retarder characteristic test at different retarder speeds are determined, and retarder characteristic results are output based on these parameters. This application ensures that the retarder oil is within a preset temperature range, so that the retarder oil temperature meets the requirements of the retarder characteristic test. Then, by adjusting the retarder speed and braking torque request value, different characteristic parameters are obtained for the retarder characteristic test at different retarder speeds. These different characteristic parameters are then analyzed to obtain accurate retarder characteristic results. This achieves automatic testing of the retarder using a retarder test bench and outputs experimental results, greatly saving manpower and resources.

[0022] Example 2 Figure 3 This is a flowchart illustrating a retarder testing method provided in an embodiment of the present invention. This embodiment further describes the above embodiment in detail. Figure 3 As shown, the method includes: S210. By controlling the flow rate and circulating water temperature of the cooling water tank in the retarder test bench, the oil in the retarder is kept within a preset temperature range.

[0023] S220, the retarder characteristic test is a retarder torque characteristic test. The retarder speed and the retarder braking torque request value are adjusted to conduct the retarder characteristic test. At the same time, the characteristic parameters of the retarder characteristic test at different retarder speeds are determined, and the retarder characteristic results are output based on the characteristic parameters.

[0024] Specifically, the retarder characteristic test is a retarder torque characteristic test. The current retarder speed is adjusted to a first preset initial speed, and the retarder braking torque request value is adjusted from zero to the maximum braking torque request value every first preset torque request value. At the current retarder speed, when the retarder braking torque request value reaches the maximum braking torque request value and stabilizes, the current retarder speed is adjusted according to a first preset adjustment speed to obtain the next retarder speed, and the retarder torque characteristic test is conducted at the next retarder speed until the retarder speed reaches the first preset speed and the retarder torque characteristic test is stopped. For example, the retarder is controlled to increase its drive speed from the first preset initial speed (n1) r / min every first preset adjustment speed (n2) r / min until the first preset speed (n3) r / min. At each speed range, the retarder requests a percentage of the retarder braking torque from 0 every first preset torque request value of 10% until it reaches 100%. After determining that the braking torque is stable, the test exits and proceeds to the next speed range.

[0025] Further, the retarder torque value and braking power value corresponding to different retarder braking torque request values ​​at different retarder speeds are obtained in real time. The braking power value is determined based on the retarder torque value and the retarder speed corresponding to the retarder torque value. For example, the braking power value at different speeds is calculated according to the formula Braking Power Value = (Torque × Speed) / 9550. Then, the host computer establishes a characteristic map of different retarder braking torque request values ​​and retarder torque values ​​at different retarder speeds based on the retarder braking torque request values ​​and retarder torque values.

[0026] S230, the retarder characteristic test is an unloaded loss test. The retarder speed and the retarder braking torque request value are adjusted to conduct the retarder characteristic test. At the same time, the characteristic parameters of the retarder characteristic test at different retarder speeds are determined, and the retarder characteristic results are output based on the characteristic parameters.

[0027] Specifically, the retarder characteristic test is an unloaded loss test. The current retarder speed is adjusted to the second preset initial speed and maintained for a first preset time. Simultaneously, the retarder's braking torque request value is controlled to be zero. This ensures the retarder is in an unloaded state, thus achieving the test of unloaded loss. When the duration of the current retarder speed reaches the first preset time, the current retarder speed is adjusted according to the second preset adjustment speed to obtain the next retarder speed for the unloaded loss test at that speed. This continues until the retarder speed reaches the second preset speed, at which point the unloaded loss test stops. For example, starting from the second preset initial speed (n1) r / min, the retarder drive speed is increased every second preset adjustment speed (n2) r / min until the second preset speed (n3) r / min. The test duration at each speed is the first preset time T0, during which the retarder braking torque request value is 0.

[0028] The first preset initial speed, the first preset adjustment speed, and the first preset speed can be the same as, or different from, the second preset initial speed, the second preset adjustment speed, and the second preset speed, depending on the specific experimental conditions.

[0029] Furthermore, the retarder torque value and no-load power value corresponding to different retarder speeds are obtained simultaneously. The no-load power value is determined based on the retarder torque value and the retarder speed corresponding to the retarder torque value. For example, the no-load power value at different speeds is calculated according to the formula No-load power value = (torque × speed) / 9550. Based on the retarder speed and no-load power value, a relationship curve between the retarder speed and no-load power value is established.

[0030] S240, the retarder characteristic test is a response time test. The retarder speed and the retarder braking torque request value are adjusted to conduct the retarder characteristic test. At the same time, the characteristic parameters of the retarder characteristic test at different retarder speeds are determined, and the retarder characteristic results are output based on the characteristic parameters.

[0031] Specifically, the retarder characteristic test is a response time test. The current retarder speed is adjusted to the third preset initial speed, and the retarder's braking torque request value is adjusted from zero to the maximum braking torque request value. After the braking torque stabilizes, the retarder braking torque request is withdrawn, and this process is repeated a first preset number of times. The third preset initial speed is greater than the first preset initial speed and the second preset initial speed. After the response time test at the current retarder speed reaches the first preset number of times, the current retarder speed is adjusted according to the third preset adjustment speed to obtain the next retarder speed, and the response time test at the next retarder speed is performed until the retarder speed reaches the third preset speed and the response time test is stopped. For example, the retarder is controlled to increase its drive speed every third preset adjustment speed (n2) r / min starting from the third preset initial speed (n4) r / min until the third preset speed (n5) r / min. At each speed, the retarder's requested torque percentage is controlled from 0 to 100%, and after judging that the braking torque is stable, the request is withdrawn, and this process is repeated three times.

[0032] Furthermore, the system simultaneously acquires the start response time and stop response time of the retarder at different retarder speeds. The start response time is the time it takes for the retarder braking torque value to reach a first preset torque value after the retarder braking torque request is initiated. The stop response time is the time it takes for the retarder braking torque value to reach a second preset torque value after the retarder braking torque request is terminated. The first preset torque value is the rated braking torque value multiplied by a first preset percentage, and the second preset torque value is the rated braking torque value multiplied by a second preset percentage. The first preset percentage is greater than the second preset percentage; for example, the first preset percentage could be 90%, and the second preset percentage could be 20%. Then, based on the retarder speed, start response time, and stop response time, the system outputs the correspondence between the retarder speed and the start response time, as well as the correspondence between the retarder speed and the stop response time.

[0033] S250, the retarder characteristic test is a life test. The retarder speed and the retarder braking torque request value are adjusted to conduct the retarder characteristic test. At the same time, the characteristic parameters of the retarder characteristic test at different retarder speeds are determined, and the retarder characteristic results are output based on the characteristic parameters.

[0034] Specifically, if the retarder characteristic test is a life test, the retarder speed is adjusted to the fourth preset speed, the current retarder braking torque request value is controlled to the maximum braking torque request value, and braking is continued for a second preset time. When the second preset time is reached, the maximum braking torque request is withdrawn and continues for a third preset time. When the duration of withdrawing the maximum braking torque request reaches the third preset time, the next retarder braking torque request value is controlled to the maximum braking torque request value to conduct the life test under the next retarder braking torque request value, until the life test is stopped after repeating the second preset number of life tests. For example, the retarder speed is kept at the fourth preset speed of 1000 r / min, the retarder is controlled to request braking at 100%, and the braking time is timed for the second preset time T1. When the time T1 is met, the operation is withdrawn and the second preset time T2 is timed. When the withdrawal time T2 is met, the retarder re-engages, and the cycle is repeated N times.

[0035] Furthermore, the maximum braking torque, minimum braking torque, and first average braking torque of the retarder during the first life test are simultaneously acquired, and the second average braking torque of the retarder during the last life test is acquired. It is then determined whether the maximum braking torque, minimum braking torque, first average braking torque, and second average braking torque meet preset conditions. The preset conditions are that the difference between the maximum braking torque and the minimum braking torque is less than or equal to a first preset torque difference, and the difference between the first average braking torque and the second average braking torque is less than or equal to a second preset torque difference. If these conditions are met, the retarder is output as having passed the life test; otherwise, the retarder is output as having failed the life test.

[0036] The technical solution of this invention controls the flow rate and circulating water temperature of the cooling water tank in the retarder test bench to keep the oil in the retarder within a preset temperature range. This ensures that the oil temperature in the retarder remains within the optimal temperature range during the test. Then, by adjusting the retarder speed and the retarder braking torque request value, different characteristic parameters for retarder characteristic tests are obtained at different retarder speeds. These different characteristic parameters are then analyzed to obtain accurate retarder characteristic results. This achieves automatic testing of the retarder through the retarder test bench and outputs experimental results, greatly saving manpower and material resources.

[0037] Example 3 Figure 4 This is a schematic diagram of a retarder testing device provided in an embodiment of the present invention. Figure 4 As shown, the device includes: The test module 310 is used to adjust the retarder speed and the retarder braking torque request value when the oil in the retarder is in a preset temperature range, so as to conduct a retarder characteristic test, which is a test to test the performance of the retarder. The characteristic result determination module 320 is used to determine different characteristic parameters obtained from retarder characteristic tests at different retarder speeds, and output retarder characteristic results based on the different characteristic parameters. The retarder characteristic results are used to describe the relationship between the characteristic parameters of the retarder.

[0038] Optionally, the oil in the retarder can be kept within a preset temperature range by controlling the flow rate and circulating water temperature of the cooling water tank in the retarder test bench.

[0039] Optionally, the test module includes a first test unit, specifically used for: Adjust the current retarder speed to the first preset initial speed, and control the retarder's braking torque request value to be adjusted from zero to the maximum braking torque request value every first preset torque request value; When the retarder braking torque request value of the retarder reaches the maximum braking torque request value and stabilizes at the current retarder speed, the current retarder speed is adjusted according to the first preset adjustment speed to obtain the next retarder speed, so as to conduct a retarder torque characteristic test at the next retarder speed, until the retarder speed reaches the first preset speed and the retarder torque characteristic test is stopped. Accordingly, the characteristic result determination module includes a first characteristic result determination unit, specifically used for: Obtain the retarder torque value and braking power value corresponding to different retarder braking torque request values ​​at different retarder speeds. The braking power value is determined based on the retarder torque value and the retarder speed corresponding to the retarder torque value. Based on the retarder braking torque request value and the retarder torque value, a characteristic graph of the retarder braking torque request value and the retarder torque value at different retarder speeds is established. Based on the retarder braking torque request value and the braking power value, a characteristic graph is established for different retarder speeds, and for different retarder braking torque request values ​​and braking power values.

[0040] Optionally, the test module includes a second test unit, specifically used for: Adjust the current retarder speed to the second preset initial speed and maintain it for the first preset time, while controlling the retarder's braking torque request value to be zero; When the duration of the current retarder speed reaches the first preset time, the current retarder speed is adjusted according to the second preset adjustment speed to obtain the next retarder speed, so as to conduct the no-load loss test at the next retarder speed, until the retarder speed reaches the second preset speed and the no-load loss test is stopped. Accordingly, the characteristic result determination module includes a second characteristic result determination unit, specifically used for: Obtain the retarder torque value and no-load power value corresponding to different retarder speeds, wherein the no-load power value is determined based on the retarder torque value and the retarder speed corresponding to the retarder torque value; Based on the retarder speed and the no-load power value, a relationship curve between the retarder speed and the no-load power value is established.

[0041] Optionally, the test module includes a third test unit, specifically used for: The current retarder speed is adjusted to the third preset initial speed, and the retarder braking torque request value is controlled to be adjusted from zero to the maximum braking torque request value. After the braking torque stabilizes, the retarder braking torque request is withdrawn, and the above process is repeated for the first preset number of times. The third preset initial speed is greater than the first preset initial speed and the second preset initial speed. After the response time test at the current retarder speed reaches the first preset number of times, the current retarder speed is adjusted according to the third preset adjustment speed to obtain the next retarder speed, so as to carry out the response time test at the next retarder speed until the retarder speed reaches the third preset speed and the response time test is stopped. Accordingly, the characteristic result determination module includes a third characteristic result determination unit, specifically used for: The start response time and stop response time of the retarder are obtained at different retarder speeds; wherein, the start response time is the time when the retarder braking torque value reaches a first preset torque value from the start of the retarder braking torque request, and the stop response time is the time when the retarder braking torque value reaches a second preset torque value after the retarder braking torque request is exited, the first preset torque value is the rated braking torque value multiplied by a first preset percentage, the second preset torque value is the rated braking torque value multiplied by a second preset percentage, and the first preset percentage is greater than the second preset percentage; Based on the retarder speed, start response time, and stop response time, output the correspondence between the retarder speed and start response time, and the correspondence between the retarder speed and stop response time.

[0042] Optionally, the test module includes a fourth test unit, specifically used for: Adjust the speed of the retarder to the fourth preset speed, control the current retarder braking torque request value to the maximum braking torque request value and continue braking for a second preset time. When the second preset time is reached, exit the maximum braking torque request and continue for a third preset time. When the duration of the maximum braking torque request is exhausted reaches the third preset time, the next retarder braking torque request value is controlled to be the maximum braking torque request value, so as to carry out the life test under the next retarder braking torque request value, until the life test is stopped when the second preset life test is repeated. Accordingly, the characteristic result determination module includes a fourth characteristic result determination unit, which is specifically used for: The maximum braking torque, minimum braking torque, and first average braking torque of the retarder during the first life test are obtained, and the second average braking torque of the retarder during the last life test is obtained. Determine whether the maximum braking torque, the minimum braking torque, the first average braking torque, and the second average braking torque meet preset conditions. The preset conditions are that the difference between the maximum braking torque and the minimum braking torque is less than or equal to a first preset torque difference, and the difference between the first average braking torque and the second average braking torque is less than or equal to a second preset torque difference. If the conditions are met, the output retarder passes the life test; otherwise, the output retarder fails the life test.

[0043] Optionally, the system receives images of liquid level changes and oil / gas spray conditions captured by a camera in the retarder test bench during the retarder characteristic test, in order to determine the state of the retarder in conjunction with the retarder characteristic results.

[0044] The retarder testing device provided in the embodiments of the present invention can execute the retarder testing method provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of executing the method.

[0045] The acquisition, storage, use, and processing of data in this application comply with relevant national laws and regulations and do not violate public order and good morals.

[0046] Example 4 According to embodiments of this disclosure, this disclosure also provides an electronic device, a readable storage medium, and a computer program product.

[0047] Figure 5A schematic diagram of an electronic device that can be used to implement the retarder testing method of embodiments of the present invention is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workbenches, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device can also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices (such as helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the invention described and / or claimed herein.

[0048] like Figure 5 As shown, the electronic device 10 includes at least one processor 11 and a memory, such as a read-only memory (ROM) 12 or a random access memory (RAM) 13, communicatively connected to the at least one processor 11. The memory stores computer programs executable by the at least one processor. The processor 11 can perform various appropriate actions and processes based on the computer program stored in the ROM 12 or loaded from storage unit 18 into the RAM 13. The RAM 13 can also store various programs and data required for the operation of the electronic device 10. The processor 11, ROM 12, and RAM 13 are interconnected via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0049] Multiple components in electronic device 10 are connected to I / O interface 15, including: input unit 16, such as keyboard, mouse, etc.; output unit 17, such as various types of displays, speakers, etc.; storage unit 18, such as disk, optical disk, etc.; and communication unit 19, such as network card, modem, wireless transceiver, etc. Communication unit 19 allows electronic device 10 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0050] Processor 11 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. Processor 11 performs the various methods and processes described above, such as the retarder testing method.

[0051] In some embodiments, the retarder testing method may be implemented as a computer program tangibly contained in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program may be loaded and / or mounted on electronic device 10 via ROM 12 and / or communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the retarder testing method described above may be performed. Alternatively, in other embodiments, processor 11 may be configured to perform the retarder testing method by any other suitable means (e.g., by means of firmware).

[0052] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-a-chip (SoCs), complex programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations may include: implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0053] Computer programs used to implement the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when executed by the processor, the computer programs cause the functions / operations specified in the flowcharts and / or block diagrams to be performed. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0054] In the context of this invention, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination thereof. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination thereof.

[0055] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the electronic device. Other types of devices can also be used to provide interaction with the user; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0056] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), or middleware components (e.g., application servers), or frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., communication networks). Examples of communication networks include local area networks (LANs), wide area networks (WANs), blockchain networks, and the Internet.

[0057] A computing system can include clients and servers. Clients and servers are generally located far apart and typically interact through communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a hosting product within the cloud computing service system to address the shortcomings of traditional physical hosts and VPS services, such as high management difficulty and weak business scalability.

[0058] 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.

[0059] 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 method for testing a retarder, characterized in that, Applied to a retarder test bench, the method includes: When the oil in the retarder is in a preset temperature range, the retarder speed and the retarder braking torque request value are adjusted to conduct a retarder characteristic test, which is a test to evaluate the performance of the retarder. Different characteristic parameters obtained from retarder characteristic tests at different retarder speeds are determined, and based on the different characteristic parameters, retarder characteristic results are output. The retarder characteristic results are used to describe the relationship between the characteristic parameters of the retarder. The retarder characteristic test includes a life test, in which the retarder speed and retarder braking torque request values ​​are adjusted to conduct the retarder characteristic test, including: Adjust the speed of the retarder to the fourth preset speed, control the current retarder braking torque request value to the maximum braking torque request value and continue braking for a second preset time. When the second preset time is reached, exit the maximum braking torque request and continue for a third preset time. When the duration of the maximum braking torque request is exhausted reaches the third preset time, the next retarder braking torque request value is controlled to be the maximum braking torque request value, so as to carry out the life test under the next retarder braking torque request value, until the life test is stopped when the second preset life test is repeated. Accordingly, the characteristic parameters of the retarder characteristic test at different retarder speeds are determined, and based on the characteristic parameters, the retarder characteristic results are output, including: The maximum braking torque, minimum braking torque, and first average braking torque of the retarder during the first life test are obtained, and the second average braking torque of the retarder during the last life test is obtained. Determine whether the maximum braking torque, the minimum braking torque, the first average braking torque, and the second average braking torque meet preset conditions. The preset conditions are that the difference between the maximum braking torque and the minimum braking torque is less than or equal to a first preset torque difference, and the difference between the first average braking torque and the second average braking torque is less than or equal to a second preset torque difference. If the conditions are met, the output retarder passes the life test; otherwise, the output retarder fails the life test.

2. The method according to claim 1, characterized in that, By controlling the flow rate and circulating water temperature of the cooling water tank in the retarder test bench, the oil in the retarder is kept within a preset temperature range.

3. The method according to claim 1, characterized in that, The retarder characteristic test also includes a retarder torque characteristic test, which involves adjusting the retarder speed and the requested retarder braking torque value to conduct the retarder characteristic test, including: Adjust the current retarder speed to the first preset initial speed, and control the retarder's braking torque request value to be adjusted from zero to the maximum braking torque request value every first preset torque request value; When the retarder braking torque request value of the retarder reaches the maximum braking torque request value and stabilizes at the current retarder speed, the current retarder speed is adjusted according to the first preset adjustment speed to obtain the next retarder speed, so as to conduct a retarder torque characteristic test at the next retarder speed, until the retarder speed reaches the first preset speed and the retarder torque characteristic test is stopped. Accordingly, the characteristic parameters of the retarder characteristic test at different retarder speeds are determined, and based on the characteristic parameters, the retarder characteristic results are output, including: Obtain the retarder torque value and braking power value corresponding to different retarder braking torque request values ​​at different retarder speeds. The braking power value is determined based on the retarder torque value and the retarder speed corresponding to the retarder torque value. Based on the retarder braking torque request value and the retarder torque value, a characteristic graph of the retarder braking torque request value and the retarder torque value at different retarder speeds is established. Based on the retarder braking torque request value and the braking power value, a characteristic graph is established for different retarder speeds, and for different retarder braking torque request values ​​and braking power values.

4. The method according to claim 1, characterized in that, The retarder characteristic test also includes an unloaded loss test, in which the retarder speed and the requested retarder braking torque are adjusted to conduct the retarder characteristic test, including: Adjust the current retarder speed to the second preset initial speed and maintain it for the first preset time, while controlling the retarder's braking torque request value to be zero; When the duration of the current retarder speed reaches the first preset time, the current retarder speed is adjusted according to the second preset adjustment speed to obtain the next retarder speed, so as to conduct the no-load loss test at the next retarder speed, until the retarder speed reaches the second preset speed and the no-load loss test is stopped. Accordingly, the characteristic parameters of the retarder characteristic test at different retarder speeds are determined, and based on the characteristic parameters, the retarder characteristic results are output, including: Obtain the retarder torque value and no-load power value corresponding to different retarder speeds, wherein the no-load power value is determined based on the retarder torque value and the retarder speed corresponding to the retarder torque value; Based on the retarder speed and the no-load power value, a relationship curve between the retarder speed and the no-load power value is established.

5. The method according to claim 1, characterized in that, The retarder characteristic test also includes a response time test, in which the retarder speed and the retarder braking torque request value are adjusted to conduct the retarder characteristic test, including: The current retarder speed is adjusted to the third preset initial speed, and the retarder braking torque request value is controlled to be adjusted from zero to the maximum braking torque request value. After the braking torque stabilizes, the retarder braking torque request is withdrawn, and the above process is repeated for the first preset number of times. The third preset initial speed is greater than the first preset initial speed and the second preset initial speed. After the response time test at the current retarder speed reaches the first preset number of times, the current retarder speed is adjusted according to the third preset adjustment speed to obtain the next retarder speed, so as to carry out the response time test at the next retarder speed until the retarder speed reaches the third preset speed and the response time test is stopped. Accordingly, the characteristic parameters of the retarder characteristic test at different retarder speeds are determined, and based on the characteristic parameters, the retarder characteristic results are output, including: The start response time and stop response time of the retarder are obtained at different retarder speeds; wherein, the start response time is the time when the retarder braking torque value reaches a first preset torque value from the start of the retarder braking torque request, and the stop response time is the time when the retarder braking torque value reaches a second preset torque value after the retarder braking torque request is exited, the first preset torque value is the rated braking torque value multiplied by a first preset percentage, the second preset torque value is the rated braking torque value multiplied by a second preset percentage, and the first preset percentage is greater than the second preset percentage; Based on the retarder speed, start response time, and stop response time, output the correspondence between the retarder speed and start response time, and the correspondence between the retarder speed and stop response time.

6. The method according to claim 1, characterized in that, The method further includes: receiving images of liquid level changes and oil / gas spray conditions captured by a camera in the retarder test bench during the retarder characteristic test, in order to determine the state of the retarder in combination with the retarder characteristic results.

7. A retarder testing device, characterized in that, include: The test module is used to adjust the retarder speed and the retarder braking torque request value when the oil in the retarder is in a preset temperature range, so as to conduct a retarder characteristic test, which is a test to test the performance of the retarder. The characteristic result determination module is used to determine different characteristic parameters obtained from retarder characteristic tests at different retarder speeds, and output retarder characteristic results based on the different characteristic parameters. The retarder characteristic results are used to describe the relationship between the characteristic parameters of the retarder. The retarder characteristic test includes a life test, and the test module includes a fourth test unit, specifically used for: Adjust the speed of the retarder to the fourth preset speed, control the current retarder braking torque request value to the maximum braking torque request value and continue braking for a second preset time. When the second preset time is reached, exit the maximum braking torque request and continue for a third preset time. When the duration of the maximum braking torque request is exhausted reaches the third preset time, the next retarder braking torque request value is controlled to be the maximum braking torque request value, so as to carry out the life test under the next retarder braking torque request value, until the life test is stopped when the second preset life test is repeated. Accordingly, the characteristic result determination module includes a fourth characteristic result determination unit, which is specifically used for: The maximum braking torque, minimum braking torque, and first average braking torque of the retarder during the first life test are obtained, and the second average braking torque of the retarder during the last life test is obtained. Determine whether the maximum braking torque, the minimum braking torque, the first average braking torque, and the second average braking torque meet preset conditions. The preset conditions are that the difference between the maximum braking torque and the minimum braking torque is less than or equal to a first preset torque difference, and the difference between the first average braking torque and the second average braking torque is less than or equal to a second preset torque difference. If the conditions are met, the output retarder passes the life test; otherwise, the output retarder fails the life test.

8. An electronic device, characterized in that, The electronic device includes: At least one processor; and A memory communicatively connected to the at least one processor; wherein, The memory stores a computer program that can be executed by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the retarder testing method according to any one of claims 1-6.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions that cause a processor to execute the retarder testing method according to any one of claims 1-6.

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