Performance evaluation method, electronic equipment and medium

Abstract

The invention discloses a performance evaluation method, electronic equipment and a medium. The method comprises the following steps: acquiring original road spectrum signals of a hydraulic cylinder to be tested under different road surface types; performing signal iteration processing on the original road spectrum signal to generate a target driving signal; performing driving loading on the to-be-detected hydraulic cylinder by adopting the target driving signal, and obtaining a state detection result of each component in the to-be-detected hydraulic cylinder in a vehicle operation simulation process; and evaluating the performance of the to-be-tested hydraulic cylinder according to the state monitoring result to obtain a performance evaluation result. According to the invention, the multi-degree-of-freedom abnormally-moving test is performed on the to-be-tested hydraulic cylinder based on the road spectrum signal, the stress state of the hydraulic cylinder can be ensured to be consistent with that of a real vehicle, and the abnormally-moving reliability of the hydraulic cylinder can be effectively verified.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle testing, and in particular to a performance evaluation method, electronic equipment, and a medium. Background Art

[0002] The cab tilt hydraulic cylinder integrates multiple requirements, including safety, convenience, reliability, and economy, and is the core element in achieving "maintenance-friendly design" for commercial vehicles. Its performance directly impacts vehicle lifecycle costs, maintenance efficiency, and the overall driving experience. It is an irreplaceable, critical component, particularly in heavy-duty trucks and construction vehicles, which rely on frequent maintenance.

[0003] In the existing technology, fixed-frequency unidirectional operation can be used to conduct dynamic reliability tests. This loading method is inconsistent with the stress state of the hydraulic cylinder when the cab is in operation, and cannot effectively feedback the quality problems of the hydraulic cylinder product. Summary of the Invention

[0004] The present invention provides a performance evaluation method, electronic equipment and medium to solve the technical problem in the prior art that the performance and quality of a hydraulic cylinder cannot be effectively fed back.

[0005] According to one aspect of the present invention, a performance evaluation method is provided, comprising:

[0006] Obtain the original road spectrum signal of the hydraulic cylinder to be tested under different road types;

[0007] Performing signal iterative processing on the original road spectrum signal to generate a target driving signal;

[0008] Using the target driving signal to drive and load the hydraulic cylinder to be tested, and obtaining the status detection results of various components in the hydraulic cylinder to be tested during the vehicle operation simulation process;

[0009] The performance of the hydraulic cylinder to be tested is evaluated according to the state monitoring result to obtain a performance evaluation result.

[0010] According to another aspect of the present invention, there is provided a performance evaluation device, comprising:

[0011] A signal acquisition module is used to obtain the original road spectrum signal of the hydraulic cylinder to be tested under different road types;

[0012] a signal generating module, configured to perform signal iterative processing on the original road spectrum signal to generate a target driving signal;

[0013] A result acquisition module, configured to drive and load the hydraulic cylinder to be tested using the target drive signal, and obtain status detection results of various components in the hydraulic cylinder to be tested during the vehicle operation simulation process;

[0014] The performance evaluation module is used to evaluate the performance of the hydraulic cylinder to be tested according to the state monitoring result to obtain a performance evaluation result.

[0015] According to another aspect of the present invention, an electronic device is provided, comprising:

[0016] at least one processor; and

[0017] a memory communicatively connected to the at least one processor; wherein,

[0018] The memory stores a computer program executable by the at least one processor. The computer program is executed by the at least one processor so that the at least one processor can perform the performance evaluation method described in any embodiment of the present invention.

[0019] According to another aspect of the present invention, a computer-readable storage medium is provided, wherein the computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the performance evaluation method according to any embodiment of the present invention when executed.

[0020] According to another aspect of the present invention, a computer program product is provided. The computer program product includes a computer program. When the computer program is executed by a processor, the performance evaluation method according to any embodiment of the present invention is implemented.

[0021] The technical solution of the embodiment of the present invention is to obtain the original road spectrum signal of the hydraulic cylinder to be tested under different road types, perform signal iterative processing on the original road spectrum signal, and generate a target driving signal; use the target driving signal to drive and load the hydraulic cylinder to be tested, and obtain the status detection results of each component in the hydraulic cylinder to be tested during the vehicle operation simulation; evaluate the performance of the hydraulic cylinder to be tested according to the status monitoring results, and obtain a performance evaluation result, thereby realizing a multi-degree-of-freedom motion test on the hydraulic cylinder to be tested based on the road spectrum signal, which can ensure that the force state of the hydraulic cylinder is consistent with the actual vehicle, and can effectively verify the motion reliability of the hydraulic cylinder.

[0022] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present invention, nor is it intended to limit the scope of the present invention. Other features of the present invention will become readily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0024] Figure 1 is a flow chart of a performance evaluation method provided by an embodiment of the present invention;

[0025] Figure 2 is a flow chart of another performance evaluation method provided by an embodiment of the present invention;

[0026] Figure 3 is a flow chart of another performance evaluation method provided by an embodiment of the present invention;

[0027] Figure 4 Schematic diagram of sensor arrangement positions on a hydraulic cylinder to be tested provided by an embodiment of the present invention;

[0028] Figure 5 is a schematic diagram of an original road spectrum signal provided by an embodiment of the present invention;

[0029] Figure 6 is a schematic diagram of a denoised road spectrum signal provided by an embodiment of the present invention;

[0030] Figure 7 is a schematic diagram of a target path spectrum signal provided by an embodiment of the present invention;

[0031] Figure 8 This is a schematic diagram of an implementation of vector calculation provided by an embodiment of the present invention;

[0032] Figure 9 1 is a schematic diagram of a loading drive implementation of a hydraulic cylinder to be tested provided by an embodiment of the present invention;

[0033] Figure 10 is a characteristic curve diagram of load efficiency provided by an embodiment of the present invention;

[0034] Figure 11 This is a schematic diagram of an actual oil pressure curve provided by an embodiment of the present invention;

[0035] Figure 12 is a structural diagram of a performance evaluation device provided by an embodiment of the present invention;

[0036] Figure 13 This is a structural block diagram of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0037] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0038] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0039] This invention can perform multi-degree-of-freedom dynamic testing on multiple hydraulic cylinders based on road load spectrum signals, ensuring that the stress state of the hydraulic cylinders is consistent with that of the actual vehicle and effectively verifying the dynamic reliability of the hydraulic cylinders. Using the proposed solution, bench dynamic testing can be performed before the cab-tumbling hydraulic cylinders are actually installed on the vehicle, enabling early detection of product defects in the hydraulic cylinders under test.

[0040] The method proposed in the present invention is an operating method for a dynamic test of a cab tilting hydraulic cylinder of a commercial vehicle body suspension system, which can simulate the installation posture of a real vehicle hydraulic cylinder.

[0041] The actual vehicle road load spectrum (hereinafter referred to as the road spectrum) of the method proposed in the present invention is derived from road data collected by the actual vehicle on a test road. Three-directional acceleration sensors are respectively arranged at the upper and lower fixed points of the hydraulic cylinder to be tested; the response signal is tested, and the test environment is a specified road surface for reliable durability verification.

[0042] The method proposed in the present invention requires performing signal iterative processing on the collected road spectrum, converting the acceleration signal of the road spectrum into a driving signal for a dynamic test, which is used for bench testing.

[0043] The method proposed by the present invention adopts a layout state consistent with that of the actual vehicle cab tilting hydraulic cylinder.

[0044] The driving loading process of the method proposed in the present invention adopts simultaneous loading in three orthogonal directions of X, Y, and Z, and can achieve a swinging state consistent with that of a real vehicle based on the three directions.

[0045] The method proposed by the present invention monitors the sample in real time during the loading process by introducing force and acceleration sensors, and regularly checks the sample and compares it with the initial state.

[0046] The method proposed in the present invention needs to record the wear and leakage of the sample to be tested after the test, and also record its functional status, form a relevant curve and evaluate and analyze the results.

[0047] In one embodiment, Figure 1 This is a flow chart of a performance evaluation method provided by an embodiment of the present invention. This embodiment is applicable to the dynamic test of the cab tilting hydraulic cylinder of the body suspension system of a commercial vehicle. The method can be executed by a performance evaluation device, which can be implemented in the form of hardware and / or software and can be configured in an electronic device.

[0048] The performance evaluation method proposed in the present invention can be an operating method for a dynamic test of a cab tilting hydraulic cylinder of a commercial vehicle body suspension system, and can simulate the installation posture of a hydraulic cylinder of an actual vehicle. In an embodiment, an electronic device can serve as a host computer and communicate with the hydraulic cylinder to be tested to collect and analyze the signals of the hydraulic cylinder to be tested and determine the performance evaluation results of the hydraulic cylinder to be tested. The test environment of this solution can be a specified road surface for reliable durability verification, and can test and evaluate the durability of the cab tilting hydraulic cylinder of a commercial vehicle suspension system in harsh environments such as mud, water, salt spray, and dust, as well as test and evaluate the performance in high and low temperature environments.

[0049] like Figure 1 As shown, the method includes:

[0050] S110 , obtaining original road spectrum signals of the hydraulic cylinder to be tested under different road types.

[0051] In one example, a hydraulic cylinder under test refers to a hydraulic cylinder whose performance needs to be tested; a pavement type refers to a classification of road surfaces based on factors such as the pavement's material, structure, construction process, and functional use. For example, based on pavement material and structure, pavement types may include asphalt pavement, cement concrete pavement, block pavement, gravel pavement, and cobblestone pavement. Based on functional use and scenario, pavement types may include highway pavement and urban road pavement. Based on pavement smoothness, pavement types may include high-grade pavement (e.g., asphalt concrete, cement concrete, and regular block pavement), sub-high-grade pavement (e.g., asphalt macadam and semi-regular block pavement), and intermediate-grade pavement (e.g., gravel pavement and irregular block pavement).

[0052] In one example, the raw road spectrum signal refers to the unprocessed acceleration signal collected by the hydraulic cylinder under test on different road surface types. In an embodiment, an acceleration sensor can be installed on the hydraulic cylinder under test, and the vehicle can be driven in sections according to road surface type. The acceleration sensor is then used to repeatedly collect acceleration signals 3-5 times on characteristic road surfaces corresponding to each road surface type, which serve as the raw road spectrum signal. Of course, during the segmented acquisition of the raw road spectrum signal, the operating parameters of the characteristic road surface can also be recorded simultaneously.

[0053] Of course, in the process of segmented acquisition of the original road spectrum signal, the waveform of the acquired acceleration signal can be observed in real time, and abnormal peaks can be paid attention to. If signal distortion or noise exceeding the standard is found, the machine can be stopped immediately for investigation to avoid aggravating the damage to the hydraulic cylinder under test.

[0054] In one embodiment, before obtaining the original road spectrum signal of the hydraulic cylinder to be tested under different road types, it also includes: using acceleration sensors installed at the first fixed point and the second fixed point of the hydraulic cylinder to be tested to collect signals; judging the connectivity of the hydraulic cylinder to be tested based on the collected signals to obtain signal debugging results.

[0055] In one example, the first fixed point may be an upper fixed point on the hydraulic cylinder to be tested, and the second fixed point may be a lower fixed point on the hydraulic cylinder to be tested. Two sets of acceleration sensors may be installed at the first fixed point and the second fixed point on the hydraulic cylinder to be tested, respectively. Furthermore, one set of acceleration sensors may be installed on either side of the first fixed point, and one set of acceleration sensors may be installed on either side of the second fixed point. The acceleration sensor may be a three-directional acceleration sensor.

[0056] In one example, each road surface type can correspond to a characteristic road section, and each characteristic road section can constitute a test section. The hydraulic cylinder under test can simulate a vehicle passing through the test section at a low speed. Accelerometers can be used to collect test signals on the test section. Based on these signals, the baseline, zero drift, and channel synchronization of the acceleration section sensors on the hydraulic cylinder under test can be determined to avoid loose installation or wiring errors, effectively ensuring the accuracy and effectiveness of signal acquisition.

[0057] S120: Perform signal iterative processing on the original road spectrum signal to generate a target driving signal.

[0058] In one example, the target driving signal refers to a signal required to drive and load the hydraulic cylinder to be tested.

[0059] In an embodiment, the original road spectrum signal can be preprocessed to obtain a target road spectrum signal under each characteristic road surface, and then vector operation is performed on the target road spectrum signals of the first fixed point and the second fixed point in the hydraulic cylinder to be tested to obtain the relative acceleration of the first fixed point relative to the second fixed point; based on the relative acceleration of the first fixed point relative to the second fixed point, and the acceleration of the pre-generated initial drive signal, a transfer function is obtained; then the pre-generated initial drive signal and the transfer function are imported into a pre-built performance evaluation software for iteration until the actual error of the output drive signal is less than the error threshold, thereby obtaining the target drive signal.

[0060] S130 , using the target driving signal to drive and load the hydraulic cylinder to be tested, and obtaining the status detection results of various components in the hydraulic cylinder to be tested during the vehicle operation simulation process.

[0061] In one example, the state detection results are used to characterize the damage and deformation conditions of various components in the hydraulic cylinder to be tested.

[0062] In an embodiment, a target drive signal can be used to collaboratively load three different directions of the hydraulic cylinder to be tested, and a vehicle operation simulation process can be started; during the vehicle operation simulation process, the actual damage degree, actual deformation degree, actual load efficiency and actual oil pressure curve of each component in the hydraulic cylinder to be tested are collected in real time as state detection results.

[0063] S140: Evaluate the performance of the hydraulic cylinder to be tested according to the state monitoring result to obtain a performance evaluation result.

[0064] In an embodiment, the performance evaluation result of the hydraulic cylinder to be tested is determined to be qualified when the actual damage degree of each component in the hydraulic cylinder to be tested does not reach the damage threshold value, the actual deformation degree does not reach the deformation threshold value, the difference between the actual load efficiency and the original load efficiency is less than the preset difference threshold value, and the difference between the actual oil pressure curve and the original oil pressure curve is less than the preset difference threshold value;

[0065] When the actual damage degree of each component in the hydraulic cylinder to be tested reaches the damage threshold value, the actual deformation degree reaches the deformation threshold value, the difference between the actual load efficiency and the original load efficiency is greater than the preset difference threshold value, or the difference between the actual oil pressure curve and the original oil pressure curve is greater than the preset difference threshold value, the performance evaluation result of the hydraulic cylinder to be tested is determined to be unqualified.

[0066] The technical solution of this embodiment is to obtain the original road spectrum signals of the hydraulic cylinder to be tested under different road types, perform signal iterative processing on the original road spectrum signals, and generate a target driving signal; use the target driving signal to drive and load the hydraulic cylinder to be tested, and obtain the status detection results of each component in the hydraulic cylinder to be tested during the vehicle operation simulation; evaluate the performance of the hydraulic cylinder to be tested based on the status monitoring results, and obtain a performance evaluation result, thereby realizing a multi-degree-of-freedom motion test on the hydraulic cylinder to be tested based on the road spectrum signal, which can ensure that the force state of the hydraulic cylinder is consistent with that of the actual vehicle, and can effectively verify the motion reliability of the hydraulic cylinder.

[0067] In one embodiment, Figure 2 This is a flow chart of another performance evaluation method provided by an embodiment of the present invention. This embodiment, based on the above embodiment, details the process of generating the target drive signal, the process of obtaining the state detection result, and the process of determining the performance evaluation result. Figure 2 As shown, the method includes:

[0068] S210: Obtain original road spectrum signals of the hydraulic cylinder to be tested under different road types.

[0069] S220 , sequentially perform signal preprocessing, vector calculation, and transfer function calculation on the original road spectrum signal to obtain a transfer function.

[0070] In one embodiment, S220 includes S2201-S2203:

[0071] S2201: Perform signal denoising and signal interception on the original road spectrum signal to obtain the target road spectrum signal under each characteristic road section.

[0072] In one example, the original road spectrum signal can be imported into the performance evaluation software installed on the host computer to perform bandpass filtering, trend removal and burr removal on the original road spectrum signal to obtain a denoised road spectrum signal; then the auxiliary connecting road surface and straight road surface signal segments in the denoised road spectrum signal are deleted, and the signal under each characteristic road surface segment is intercepted as the target road spectrum signal to shorten the iteration cycle and test bench time.

[0073] S2202: Perform vector operation on the target path spectrum signals of the first fixed point and the second fixed point in the hydraulic cylinder to be tested to obtain the relative acceleration of the first fixed point with respect to the second fixed point.

[0074] In an embodiment, a relative acceleration of the first fixed point with respect to the second fixed point is obtained by performing vector operation on target road spectrum signals measured at a first fixed point and a second fixed point in the hydraulic cylinder to be measured.

[0075] In an embodiment, the absolute acceleration vector of the first fixed point and the absolute acceleration vector of the second fixed point on the hydraulic cylinder to be tested can be obtained, and then the absolute acceleration vector of the second fixed point can be subtracted from the absolute acceleration vector of the first fixed point to obtain the acceleration vector of the first fixed point relative to the second fixed point.

[0076] After ensuring that the sampling time points and corresponding coordinate systems of the two acceleration signals are completely consistent, perform vector subtraction to calculate the relative acceleration:

[0077] At each sampling moment, the relative acceleration components (also called relative acceleration signals) in three directions are calculated. Specifically, the relative acceleration component in the first direction can be obtained by subtracting the acceleration component of the second fixed point in the first direction from the acceleration component of the first fixed point in the first direction; the relative acceleration component in the second direction can be obtained by subtracting the acceleration component of the second fixed point in the second direction from the acceleration component of the first fixed point in the second direction; and the relative acceleration component in the third direction can be obtained by subtracting the acceleration component of the second fixed point in the third direction from the acceleration component of the first fixed point. The relative acceleration components in the three directions are then combined in a time series to obtain the complete relative acceleration component. After obtaining the relative acceleration component of the first fixed point relative to the second fixed point, only the first fixed point needs to be loaded, which reduces the requirements for the equipment.

[0078] S2203 : Obtain a transfer function based on the relative acceleration of the first fixed point with respect to the second fixed point and the acceleration of the pre-generated initial driving signal.

[0079] In one example, the initial drive signal refers to a pre-generated, unprocessed drive signal; the transfer function can convert the relative acceleration of the first fixed point relative to the second fixed point into a force signal recognizable by the loading device in three directions. In an embodiment, a new drive signal segment can be created, with a set frequency band and amplitude, to generate a random signal as the initial drive signal; then, the ratio between the relative acceleration of the first fixed point relative to the second fixed point and the acceleration of the pre-generated initial drive signal is used as the transfer function.

[0080] S230 , importing the pre-generated initial driving signal and transfer function into pre-built performance evaluation software for iteration until the actual error of the output driving signal is less than the error threshold, thereby obtaining a target driving signal.

[0081] In one example, the performance evaluation software can be installed in an electronic device serving as a host computer. In an embodiment, the initial drive signal and transfer function can be imported into the pre-built performance evaluation software, and iterations can be initiated. After each iteration, the RMS error value of the generated drive signal is checked. If the simulated iteration error is within an error threshold, the iteration can be terminated, and the generated drive signal is used as the final drive signal, i.e., the target drive signal, for use in a simulation test of the test bench on which the hydraulic cylinder to be tested resides.

[0082] S240: Use the target drive signal to collaboratively load the three different directions of the hydraulic cylinder to be tested, and start the vehicle operation simulation process.

[0083] In one example, the vehicle operation simulation process can be understood as a test process for testing the hydraulic cylinder to be tested. Before using the target drive signal to drive the loading of the hydraulic cylinder to be tested in three different directions, it can be arranged according to the layout of the hydraulic cylinder of the actual vehicle cab flip. During loading, the X, Y, and Z three-way collaborative loading method is adopted, and the spatial load coupling characteristics under the actual vehicle working conditions are simulated by a multi-degree-of-freedom loading device to ensure that the cab hydraulic cylinder achieves a three-way swing dynamic response consistent with the actual vehicle. After the drive signal is imported into the performance evaluation software, the loading device is driven by the software to execute the application of loading forces in the three orthogonal directions of X, Y, and Z, and the test process is started synchronously, that is, the vehicle operation simulation process is started.

[0084] S250. During the vehicle operation simulation, the actual damage degree, actual deformation degree, actual load efficiency, and actual oil pressure curve of each component in the hydraulic cylinder to be tested are collected in real time as the state detection result.

[0085] In an embodiment, the actual degree of damage and actual degree of deformation of each component in the hydraulic cylinder to be tested can be collected in real time during the vehicle operation simulation process; then, based on the loading force and the effective area of ​​the piston, the actual load efficiency of the hydraulic cylinder to be tested under different pressures is determined, and the actual oil pressure of the hydraulic cylinder to be tested is obtained, and an oil pressure curve is drawn.

[0086] In one embodiment, the process of determining the actual load efficiency includes: obtaining the loading force and the effective piston area of ​​the hydraulic cylinder to be tested; and determining the actual load efficiency of the hydraulic cylinder to be tested under different pressures based on the loading force and the effective piston area.

[0087] In an embodiment, the product value between the pressure and the effective area of ​​the piston can be counted, and the percentage of the ratio between the loading force of the hydraulic cylinder to be tested and the product value can be used as the actual load efficiency to obtain the load efficiency of the hydraulic cylinder to be tested under different pressures.

[0088] In one embodiment, during the vehicle operation simulation process, it also includes: real-time detection of the loading force applied to the hydraulic cylinder to be tested; when the actual load indication value of the loading force fluctuates beyond a preset allowable range, automatically triggering a shutdown operation and a warning operation.

[0089] During the test, the loading force applied to the hydraulic cylinder under test is monitored dynamically in real time. If the actual load indication fluctuates beyond the preset allowable range, the system automatically triggers a shutdown mechanism and issues an alarm, immediately conducting a comprehensive inspection of the sample. Accelerometers are placed at the first and second fixed points of the hydraulic cylinder under test to monitor its operating status in real time. Furthermore, regular inspections are conducted on the cylinder under test, recording damage to key components such as the wear and leakage of the piston rod oil seal and the wear of the upper and lower fixed point cushions.

[0090] S260. When the actual damage degree of each component in the hydraulic cylinder to be tested does not reach the damage threshold value, the actual deformation degree does not reach the deformation threshold value, the difference between the actual load efficiency and the original load efficiency is less than the preset difference threshold value, and the difference between the actual oil pressure curve and the original oil pressure curve is less than the preset difference threshold value, the performance evaluation result of the hydraulic cylinder to be tested is determined to be qualified.

[0091] In this embodiment, the performance evaluation result of the hydraulic cylinder under test is determined to be acceptable only when the actual damage level of each component in the hydraulic cylinder under test does not reach a damage threshold, the actual deformation level does not reach a deformation threshold, the difference between the actual load efficiency and the original load efficiency is less than a preset difference threshold, and the difference between the actual oil pressure curve and the original oil pressure curve is less than a preset difference threshold. It can be understood that the performance evaluation result of the hydraulic cylinder under test is determined to be acceptable only when all evaluation indicators of the hydraulic cylinder under test meet the conditions.

[0092] S270. When the actual damage degree of each component in the hydraulic cylinder to be tested reaches the damage threshold value, the actual deformation degree reaches the deformation threshold value, the difference between the actual load efficiency and the original load efficiency is greater than the preset difference threshold value, or the difference between the actual oil pressure curve and the original oil pressure curve is greater than the preset difference threshold value, the performance evaluation result of the hydraulic cylinder to be tested is determined to be unqualified.

[0093] If the actual damage level of each component in the hydraulic cylinder under test reaches a damage threshold, or the actual deformation level reaches a deformation threshold, or the difference between the actual load efficiency and the original load efficiency is greater than a preset difference threshold, or the difference between the actual oil pressure curve and the original oil pressure curve is greater than a preset difference threshold, the performance evaluation result of the hydraulic cylinder under test is determined to be unqualified. This means that if any one of the evaluation indicators of the hydraulic cylinder under test fails to meet the requirements, the performance evaluation result of the hydraulic cylinder under test is determined to be unqualified.

[0094] In one embodiment, Figure 3 This is a flow chart of another performance evaluation method provided by an embodiment of the present invention. This embodiment is a preferred embodiment and describes the performance evaluation process. In the embodiment, the first fixed point is the upper fixed point 1, the second fixed point is the lower fixed point 2, and the acceleration sensor is a three-directional acceleration sensor. Figure 3 As shown, the performance evaluation method in this embodiment includes the following steps:

[0095] S310: Collect original road spectrum signals.

[0096] In the embodiment, the original road spectrum signal collection process can be divided into two stages: pre-test and test signal collection, and formal signal collection.

[0097] Phase 1: Preliminary test and test signal debugging

[0098] Empty car trial run: Figure 4 This is a schematic diagram of the sensor arrangement positions on a hydraulic cylinder to be tested provided by an embodiment of the present invention. Two groups (one group on each side) of three-directional acceleration sensors are installed at the upper fixed point 1 and the lower fixed point 2 of the hydraulic cylinder to be tested, and the test signals are collected by the three-directional acceleration sensors. The arrangement positions are as follows: Figure 4 As shown in the figure, the hydraulic cylinder to be tested can simulate a vehicle passing through the test section at a low speed to check the signal baseline, zero drift and synchronization of each acceleration sensor, and eliminate loose installation or wiring errors.

[0099] Working condition verification: simulate the target load to confirm that the sensor output is consistent with the theoretical value.

[0100] Phase 2: Formal signal collection

[0101] Segmented collection: driving in sections according to road surface type, the road spectrum signal can be repeated 3 to 5 times under each characteristic road surface corresponding to each road surface type as the original road spectrum signal, and the operating condition parameters can be recorded at the same time. For example, Figure 5 This is a schematic diagram of an original road spectrum signal provided by an embodiment of the present invention.

[0102] Dynamic monitoring: Observe the waveform of the collected original spectrum signal in real time and pay attention to abnormal peaks. If signal distortion or noise exceeds the standard, stop the machine immediately for investigation.

[0103] S320: Iteratively process the original road spectrum signal to generate a target driving signal.

[0104] In an embodiment, the signal iterative processing can be divided into four stages: signal preprocessing, vector calculation, transfer function calculation, and target drive signal generation.

[0105] The first stage is signal preprocessing: Figure 6 is a schematic diagram of a denoised road spectrum signal provided by an embodiment of the present invention. Figure 7 is a schematic diagram of a target path spectrum signal provided by an embodiment of the present invention. Figure 5 The original road spectrum signal shown is imported into the performance evaluation software, and the original road spectrum signal is subjected to bandpass filtering, trend removal and burr removal to obtain the denoised road spectrum signal, as shown in FIG. Figure 6 As shown; then delete the straight road signal segment in the denoised road spectrum signal, and extract the signal of each characteristic road segment as the target road spectrum signal, as shown Figure 7 As shown, this can shorten the iteration cycle and test bench time.

[0106] The second stage is vector calculation: by performing vector operations on the signals measured at the lower fixed point 2 and the upper fixed point 1, the relative acceleration of the upper fixed point 1 relative to the lower fixed point 2 is obtained. Figure 8 This is a schematic diagram of a vector calculation implementation provided by an embodiment of the present invention, such as Figure 8 As shown, the relative acceleration is defined as: a A / B =a A -a B ;in:

[0107] a A is the absolute acceleration vector of the upper fixed point 1 (three-dimensional, including x, y, and z components),

[0108] a B is the absolute acceleration vector of the lower fixed point 2 (three-dimensional, including x, y, and z components),

[0109] a A / B is the acceleration vector of the upper fixed point 1 relative to the lower fixed point 2 (i.e., the target signal).

[0110] After ensuring that the sampling time points and corresponding coordinate systems of the two acceleration signals are completely consistent, perform vector subtraction to calculate the relative acceleration:

[0111] For each sampling time t i , calculate the relative acceleration components in three directions respectively:

[0112] a A / B ,x(t i )=a A ,x(t i )-a B ,x(t i );

[0113] a A / B ,y(t i )=a A ,y(t i )-a B ,y(t i );

[0114] a A / B ,z(t i )=a A ,z(t i )-a B ,z(t i );

[0115] Among them, a A ,x,a A ,y,a A ,z and a B ,x,a B ,y,a B ,z are the acceleration signals of point A and point B in the x, y, and z directions respectively.

[0116] The relative acceleration components in the three directions are combined in time series to obtain the complete relative acceleration signal a A / B (t), contains time history data in the x, y, and z directions. The relative acceleration signal of the upper fixed point relative to the lower fixed point is obtained. After that, only the upper fixed point needs to be loaded, which reduces the requirements for the equipment;

[0117] The third stage is to calculate the transfer function: a new drive signal is created, the frequency band and amplitude are set, and a random signal is generated as the initial drive signal. After the software is run, the transfer function is obtained. The formula is as follows:

[0118] a 随机 ×f(x)=a A / B ;

[0119] Where:

[0120] a 随机 is the acceleration of the random signal;

[0121] f(x) is the transfer function;

[0122] a A / B is the acceleration of the upper fixed point relative to the lower fixed point;

[0123] The transfer function can convert the acceleration signal a A / B (t) Converted into force signals that can be recognized by the loading device in the X, Y, and Z directions;

[0124] The fourth stage involves generating the target drive signal. The initial drive signal and transfer function are imported into the performance evaluation software and iterations begin. After each iteration, the RMS error of the generated drive signal is checked. When the error within the simulation iteration is within 5%, the iteration is terminated and the final drive signal is generated, serving as the target drive signal for bench simulation testing.

[0125] S330: Use the target driving signal to drive and load the hydraulic cylinder to be tested.

[0126] Figure 9 This is a schematic diagram of the implementation of the loading drive of a hydraulic cylinder to be tested provided by an embodiment of the present invention. Before the hydraulic cylinder to be tested is driven and loaded, it is arranged according to the arrangement of the hydraulic cylinder of the actual vehicle cab flip. During loading, the X, Y, and Z three-axis coordinated loading method is adopted. The spatial load coupling characteristics under the actual vehicle working condition are simulated by the multi-degree-of-freedom loading device to ensure that the hydraulic cylinder in the cab achieves a three-axis swing dynamic response consistent with the actual vehicle. The specific loading method is as follows: Figure 9 As shown. After the target drive signal is imported into the performance evaluation software, it is then imported into the drive loading device associated with the hydraulic cylinder to be tested through the performance evaluation software to apply the load forces in the three orthogonal directions of X, Y, and Z, and to start the test process simultaneously. The test duration is determined based on the proportional relationship between the total test mileage and the single-cycle mileage of the drive signal to ensure that the bench simulation conditions accurately match the target load history of the actual vehicle. The specific formula is as follows:

[0127]

[0128] Where T is the duration of the experiment;

[0129] L is the total test mileage;

[0130] x is the driving signal mileage;

[0131] t is the single cycle time of the driving signal;

[0132] S340. During the test, status detection is performed on each component in the hydraulic cylinder to be tested to obtain status detection results.

[0133] During the test, the applied loading force is dynamically monitored in real time. If the actual load indication fluctuates beyond the preset allowable range, the performance evaluation software automatically triggers a shutdown mechanism and an alarm, immediately initiating a comprehensive inspection of the sample. Simultaneously, an acceleration sensor is placed at the upper fixed point 1 of the hydraulic cylinder under test to monitor the cylinder's operating status in real time. Furthermore, the sample is periodically inspected every four hours, recording damage to key components such as the wear and leakage of the piston rod oil seal and the wear of the upper and lower fixed point cushions.

[0134] S350: Evaluate the state detection result to obtain a performance evaluation result of the hydraulic cylinder to be tested.

[0135] After the test, the damage and deformation of the hydraulic cylinder sample to be tested shall be recorded in detail and kept in record. The evaluation criteria are:

[0136] Cylinder body / end cover: no cracks, obvious deformation, or weld cracks; Piston rod: straightness deviation ≤ 10% of the value before the test, no peeling of the chrome plating on the surface, no serious scratches (depth > 5μm is considered unqualified); Connecting parts: earrings, flanges, pins and other installation parts have no threaded buckles or pin hole expansion (dimensional deviation ≤ 0.2mm).

[0137] Figure 10 This is a characteristic curve diagram of load efficiency provided by an embodiment of the present invention. After recording, the load efficiency of the sample is quantitatively measured. The load efficiency n of the hydraulic cylinder under different pressures (0 to rated pressure) is calculated according to the following formula, and the load-pressure curve is drawn, such as Figure 10 shown.

[0138]

[0139] Where:

[0140] n is the load efficiency;

[0141] w is the actual output (thrust or pull) value, in N;

[0142] p is the pressure value, the unit is MPa;

[0143] S is the value of the effective area of ​​the piston, in mm 2 .

[0144] Figure 11 This is a schematic diagram of an actual oil pressure curve provided by an embodiment of the present invention. Figure 11 As shown, if the difference between the oil pressure curve of the hydraulic cylinder to be tested after the test and the oil pressure curve of the hydraulic cylinder to be tested before the test is not large, it is considered that the oil pressure of the hydraulic cylinder to be tested is normal.

[0145] Through comprehensive analysis of the aforementioned data, the performance evaluation of the hydraulic cylinder prototype under test was completed. This enabled the use of a consistent installation method and loading conditions, consistent with a real vehicle, without the use of a real vehicle. After incorporating the road profile, dynamic testing of the cab tilting hydraulic cylinder was conducted, effectively verifying the dynamic reliability of the hydraulic cylinder.

[0146] In one embodiment, Figure 12 FIG. 1 is a schematic diagram of the structure of a performance evaluation device provided by an embodiment of the present invention. Figure 12 As shown, the device includes: a signal acquisition module 410 , a signal generation module 420 , a result acquisition module 430 and a performance evaluation module 440 .

[0147] The signal acquisition module 410 is used to obtain the original road spectrum signal of the hydraulic cylinder to be tested under different road types;

[0148] The signal generating module 420 is used to perform signal iterative processing on the original road spectrum signal to generate a target driving signal;

[0149] The result acquisition module 430 is used to drive and load the hydraulic cylinder to be tested using the target drive signal, and obtain the status detection results of each component in the hydraulic cylinder to be tested during the vehicle operation simulation;

[0150] The performance evaluation module 440 is used to evaluate the performance of the hydraulic cylinder to be tested according to the state monitoring result to obtain a performance evaluation result.

[0151] In one embodiment, the signal generating module 420 includes:

[0152] A signal processing unit, configured to sequentially perform signal preprocessing, vector calculation, and transfer function calculation on the original road spectrum signal to obtain a transfer function;

[0153] The iterative generation unit is used to import the pre-generated initial driving signal and transfer function into the pre-built performance evaluation software for iteration until the actual error of the output driving signal is less than the error threshold, thereby obtaining the target driving signal.

[0154] In one embodiment, the signal processing unit includes:

[0155] The signal denoising and interception subunit is used to perform signal denoising and signal interception on the original road spectrum signal to obtain the target road spectrum signal under each characteristic road section;

[0156] A vector operation subunit is used to perform vector operation on the target path spectrum signals of the first fixed point and the second fixed point in the hydraulic cylinder to be tested, so as to obtain the relative acceleration of the first fixed point relative to the second fixed point;

[0157] The function generating subunit is configured to obtain a transfer function based on a relative acceleration of the first fixed point relative to the second fixed point and an acceleration of a pre-generated initial driving signal.

[0158] In one embodiment, before obtaining the original road spectrum signals of the hydraulic cylinder to be tested under different road types, the performance evaluation device further includes:

[0159] A signal acquisition module, configured to acquire signals using acceleration sensors installed at the first fixed point and the second fixed point of the hydraulic cylinder to be tested;

[0160] The judgment module is used to judge the connectivity of the hydraulic cylinder to be tested based on the collected signals and obtain the signal debugging results.

[0161] In one embodiment, the result acquisition module 430 includes:

[0162] The loading and starting unit is used to collaboratively load the three different directions of the hydraulic cylinder to be tested using the target driving signal and start the vehicle operation simulation process;

[0163] The state detection unit is used to collect the actual damage degree, actual deformation degree, actual load efficiency and actual oil pressure curve of each component in the hydraulic cylinder to be tested in real time during the vehicle operation simulation as the state detection result.

[0164] In one embodiment, during the vehicle operation simulation process, the performance evaluation device further includes:

[0165] A loading force detection module is used to detect the loading force applied to the hydraulic cylinder to be tested in real time;

[0166] The automatic warning module is used to automatically trigger shutdown operations and warning operations when the actual load indication value of the loading force fluctuates beyond the preset allowable range.

[0167] In one embodiment, the process of determining the actual load efficiency specifically includes:

[0168] Obtain the loading force and piston effective area of ​​the hydraulic cylinder to be tested;

[0169] The actual load efficiency of the hydraulic cylinder under test at different pressures is determined based on the loading force and the effective area of ​​the piston.

[0170] In one embodiment, the performance evaluation module 440 includes:

[0171] The first performance evaluation unit is configured to determine that the performance evaluation result of the hydraulic cylinder to be tested is qualified if the actual damage degree of each component in the hydraulic cylinder to be tested does not reach the damage threshold value, the actual deformation degree does not reach the deformation threshold value, the difference between the actual load efficiency and the original load efficiency is less than a preset difference threshold value, and the difference between the actual oil pressure curve and the original oil pressure curve is less than the preset difference threshold value;

[0172] The second performance evaluation unit is used to determine that the performance evaluation result of the hydraulic cylinder to be tested is unqualified when the actual damage degree of each component in the hydraulic cylinder to be tested reaches the damage threshold value, the actual deformation degree reaches the deformation threshold value, the difference between the actual load efficiency and the original load efficiency is greater than the preset difference threshold value, or the difference between the actual oil pressure curve and the original oil pressure curve is greater than the preset difference threshold value.

[0173] The performance evaluation device provided in the embodiment of the present invention can execute the performance evaluation method provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method.

[0174] In one embodiment, Figure 13 This is a structural block diagram of an electronic device provided by an embodiment of the present invention. Figure 13 , a schematic diagram of the structure of an electronic device 10 that can be used to implement an embodiment of the present invention is shown. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, 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 processing, cellular phones, smart phones, 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 examples and are not intended to limit the implementation of the present invention described and / or required herein.

[0175] like Figure 13 As shown, the electronic device 10 includes at least one processor 11 and a memory, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc., which is communicatively connected to the at least one processor 11. The memory stores a computer program that can be executed by the at least one processor. The processor 11 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 12 or the computer program loaded from the storage unit 18 into the random access memory (RAM) 13. Various programs and data required for the operation of the electronic device 10 can also be stored in the RAM 13. The processor 11, ROM 12, and RAM 13 are connected to each other via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0176] Multiple components in the electronic device 10 are connected to the I / O interface 15, including an input unit 16, such as a keyboard, a mouse, etc.; an output unit 17, such as various types of displays, speakers, etc.; a storage unit 18, such as a magnetic disk, an optical disk, etc.; and a communication unit 19, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information / data with other devices via a computer network such as the Internet and / or various telecommunication networks.

[0177] The processor 11 may be any general-purpose and / or specialized processing component with processing and computing capabilities. Examples of the processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various specialized artificial intelligence (AI) computing chips, various processors for running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. The processor 11 executes the various methods and processes described above, such as the performance evaluation method.

[0178] In some embodiments, the performance evaluation 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 installed 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 performance evaluation method described above may be performed. Alternatively, in other embodiments, processor 11 may be configured to perform the performance evaluation method in any other appropriate manner (e.g., by means of firmware).

[0179] Various embodiments of the systems and techniques described 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), system-on-chip systems (SOCs), programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments can include being implemented in one or more computer programs that are executable and / or interpreted on a programmable system that includes at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0180] Computer programs for implementing 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 the computer program is executed by the processor, the functions / operations specified in the flowcharts and / or block diagrams are implemented. The computer program may be executed entirely on the machine, partially on the machine, as a stand-alone software package, partially on the machine and partially on a remote machine, or entirely on a remote machine or server.

[0181] In the context of the present invention, computer-readable storage media can be tangible media that can contain or store a computer program for use with an instruction execution system, device or equipment or used in combination with an instruction execution system, device or equipment. Computer-readable storage media can include but are not limited to electronic, magnetic, optical, electromagnetic, infrared or semiconductor systems, devices or equipment, or any suitable combination of the foregoing. Alternatively, computer-readable storage media can be machine-readable signal media. More specific examples of machine-readable storage media can include electrical connections based on one or more lines, portable computer disks, hard disks, random access memories (RAM), read-only memories (ROM), erasable programmable read-only memories (EPROM or flash memory), optical fibers, portable compact disk read-only memories (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0182] 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 can provide input to the electronic device. Other types of devices can also be used to provide interaction with the user; for example, the 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 acoustic input, voice input, or tactile input).

[0183] The systems and techniques described herein can be implemented in a computing system that includes back-end components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes front-end components (e.g., a user computer with a graphical user interface or web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such back-end components, middleware components, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0184] A computing system may include clients and servers. The clients and servers are typically remote from each other and typically interact via a communication network. This client-server relationship arises through computer programs running on the respective computers, creating a client-server relationship. The server may be a cloud server, also known as a cloud computing server or cloud host. This server is a hosting product within the cloud computing service ecosystem that addresses the management difficulties and limited scalability of traditional physical hosting and VPS services.

[0185] An embodiment of the present invention further provides a computer program product, including a computer program, which, when executed by a processor, can implement the performance evaluation method provided in any embodiment of the present application.

[0186] The computer program product, during implementation, may be written in one or more programming languages ​​or a combination thereof, for performing the operations of the present application, including object-oriented programming languages ​​such as Java, Smalltalk, C++, and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user's computer, partially on the user's computer, as a separate software package, partially on the user's computer and partially on a remote computer, or entirely on a remote computer or server. In cases involving a remote computer, the remote computer may be connected to the user's computer via any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computer (e.g., via the Internet using an Internet service provider).

[0187] It should be understood that the various forms of the processes shown above can be used to reorder, add, or delete steps. For example, the steps described in the present invention can be performed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution of the present invention can be achieved. This is not limited herein.

[0188] The above specific embodiments do not limit the scope of protection of the present invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention are intended to be included within the scope of protection of the present invention.

Claims

1. A performance evaluation method, characterized in that: include: Obtain the original road spectrum signal of the hydraulic cylinder to be tested under different road types; Performing signal iterative processing on the original road spectrum signal to generate a target driving signal; Using the target driving signal to drive and load the hydraulic cylinder to be tested, and obtaining the status detection results of various components in the hydraulic cylinder to be tested during the vehicle operation simulation process; The performance of the hydraulic cylinder to be tested is evaluated according to the state monitoring result to obtain a performance evaluation result.

2. The method according to claim 1, characterized in that The iterative processing of the original road spectrum signal to generate a target driving signal includes: performing signal preprocessing, vector calculation, and transfer function calculation on the original road spectrum signal in sequence to obtain a transfer function; The pre-generated initial driving signal and the transfer function are imported into the pre-built performance evaluation software for iteration until the actual error of the output driving signal is less than the error threshold, thereby obtaining the target driving signal.

3. The method according to claim 2, characterized in that The step of sequentially performing signal preprocessing, vector calculation, and transfer function calculation on the original road spectrum signal to obtain a transfer function includes: Performing signal denoising and signal interception on the original road spectrum signal to obtain a target road spectrum signal under each characteristic road section; Performing vector operation on target path spectrum signals of a first fixed point and a second fixed point in the hydraulic cylinder to be tested to obtain a relative acceleration of the first fixed point relative to the second fixed point; A transfer function is obtained based on the relative acceleration of the first fixed point with respect to the second fixed point and the acceleration of the pre-generated initial driving signal.

4. The method according to any one of claims 1 to 3, characterized in that Before obtaining the original road spectrum signal of the hydraulic cylinder to be tested under different road types, the method further includes: Acquiring signals using acceleration sensors installed at the first fixed point and the second fixed point of the hydraulic cylinder to be tested; The connectivity of the hydraulic cylinder to be tested is judged based on the collected signal to obtain a signal debugging result.

5. The method according to claim 1, wherein The step of driving and loading the hydraulic cylinder to be tested by using the target driving signal and obtaining status detection results of various components in the hydraulic cylinder to be tested during the vehicle operation simulation includes: Using the target drive signal to collaboratively load the three different directions of the hydraulic cylinder to be tested, and starting a vehicle operation simulation process; During the vehicle operation simulation, the actual damage degree, actual deformation degree, actual load efficiency and actual oil pressure curve of each component in the hydraulic cylinder to be tested are collected in real time as the state detection result.

6. The method according to claim 5, characterized in that The vehicle operation simulation process also includes: Real-time detection of the loading force applied to the hydraulic cylinder to be tested; When the actual load indication value of the loading force fluctuates beyond a preset allowable range, a shutdown operation and a warning operation are automatically triggered.

7. The method according to claim 5, characterized in that The process of determining the actual load efficiency includes: Obtaining the loading force and piston effective area of ​​the hydraulic cylinder to be tested; The actual load efficiency of the hydraulic cylinder to be tested under different pressures is determined according to the loading force and the effective area of ​​the piston.

8. The method according to claim 5, characterized in that The step of evaluating the performance of the hydraulic cylinder to be tested according to the state monitoring result to obtain a performance evaluation result includes: The performance evaluation result of the hydraulic cylinder to be tested is determined to be qualified if the actual damage degree of each component in the hydraulic cylinder to be tested does not reach the damage threshold value, the actual deformation degree does not reach the deformation threshold value, the difference between the actual load efficiency and the original load efficiency is less than the preset difference threshold value, and the difference between the actual oil pressure curve and the original oil pressure curve is less than the preset difference threshold value; When the actual damage degree of each component in the hydraulic cylinder to be tested reaches the damage threshold value, the actual deformation degree reaches the deformation threshold value, the difference between the actual load efficiency and the original load efficiency is greater than the preset difference threshold value, or the difference between the actual oil pressure curve and the original oil pressure curve is greater than the preset difference threshold value, the performance evaluation result of the hydraulic cylinder to be tested is determined to be unqualified.

9. An electronic device, characterized in that: The electronic device comprises: at least one processor; and a memory communicatively connected to the at least one processor; wherein, The memory stores a computer program executable by the at least one processor. The computer program is executed by the at least one processor to enable the at least one processor to perform the performance evaluation method according to any one of claims 1 to 8.

10. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the performance evaluation method according to any one of claims 1 to 8 when executed.

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