CN116907874A - Method and device for testing response performance of disconnecting mechanism - Google Patents
Method and device for testing response performance of disconnecting mechanism Download PDFInfo
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Abstract
The application discloses a response performance testing method and device of a disconnection mechanism. The method comprises the following steps: the method comprises the steps of controlling a disconnection mechanism of a target vehicle to be disconnected, and detecting a first duty ratio of the disconnection mechanism; when the first duty ratio is not greater than a preset first target duty ratio, controlling a motor of a target vehicle to operate according to the motor rotating speed and the motor torque, and detecting first test data of a disconnecting mechanism; controlling engagement of a disconnect mechanism of the target vehicle, and detecting a second duty cycle of the disconnect mechanism; when the second duty ratio is not smaller than a preset second target duty ratio, carrying out bias processing on motor torque of the target vehicle, and detecting second test data of the disconnecting mechanism; the response performance of the disconnect mechanism is determined based on the first test data and the second test data. The application solves the technical problem that the response performance of the disconnection mechanism cannot be tested due to the related technology.
Description
Technical Field
The application relates to the technical field of vehicles, in particular to a response performance testing method and device of a disconnection mechanism.
Background
With the development of the automobile industry, the performance requirements of people on vehicles are higher and higher, and meanwhile, the energy consumption of the vehicles is expected to be lower, so that based on the requirement for new energy, the electric vehicles gradually enter the main stream development direction of the future automobile industry. Among them, the four-wheel drive type is popular with customers by virtue of its high performance advantages such as strong operability and high power. In the four-wheel drive type of electric vehicles, a set of electric drive systems are respectively arranged on front and rear axles of the vehicle, and under the normal running condition, the power of one motor is enough to meet the use requirement, and auxiliary drive intervention work is only needed under the working conditions of climbing, traction, acceleration and the like.
In the current mainstream electric drive system structure, the characteristics of simple control process and low cost of the disconnection mechanism are applied to the front auxiliary driving force unit of the electric automobile to control power interruption. However, no better test method exists for the response performance test of the disconnecting mechanism at present, and the invalid working conditions in the real vehicle test are excessively disturbed, so that the cost is high and the development period is long.
In view of the above problems, no effective solution has been proposed at present.
Disclosure of Invention
The embodiment of the application provides a response performance testing method and device for a disconnection mechanism, which at least solve the technical problem that the response performance of the disconnection mechanism cannot be tested due to the related technology.
According to an aspect of an embodiment of the present application, there is provided a response performance test of a disconnection mechanism, including: the method comprises the steps of controlling a disconnecting mechanism of a target vehicle to be disconnected, and detecting a first duty ratio of the disconnecting mechanism, wherein the first duty ratio is used for representing a proportional relation between a first displacement of the disconnecting mechanism in a disconnected state and a maximum displacement of the disconnecting mechanism; when the first duty ratio is not greater than a preset first target duty ratio, controlling a motor of a target vehicle to operate according to the motor rotating speed and the motor torque, and detecting first test data of a disconnecting mechanism; controlling the engagement of the disconnecting mechanism of the target vehicle, and detecting a second duty cycle of the disconnecting mechanism, wherein the second duty cycle is used for representing the proportional relation between the second displacement of the disconnecting mechanism and the maximum displacement of the disconnecting mechanism when the disconnecting mechanism is in an engaged state; when the second duty ratio is not smaller than a preset second target duty ratio, carrying out bias processing on motor torque of the target vehicle, and detecting second test data of the disconnecting mechanism; the response performance of the disconnect mechanism is determined based on the first test data and the second test data.
Optionally, when the first duty ratio is not greater than a preset first target duty ratio, controlling the motor of the target vehicle to operate according to the motor rotation speed and the motor torque, and detecting first test data of the disconnection mechanism, including: when the first duty ratio is not greater than the first target duty ratio, generating a motor operation instruction of the target vehicle, wherein the motor operation instruction is used for controlling a motor of the target vehicle to operate; controlling a motor of a target vehicle to run according to the motor rotating speed and the motor torque, wherein the motor rotating speed is any one of zero and a preset target rotating speed; detecting first test data of the disconnecting mechanism, wherein the first test data comprises at least one of the following: the first current and the first electric control signal when the disconnection mechanism is in the disconnection state.
Optionally, when the second duty cycle is not less than a preset second target duty cycle, performing bias processing on the motor torque of the target vehicle, and detecting second test data of the disconnect mechanism, including: when the second duty ratio is not smaller than the second target duty ratio, generating a torque bias command, wherein the torque bias command is used for carrying out bias processing on motor torque of the target vehicle; detecting second test data of the opening mechanism based on the torque bias command, wherein the second test data comprises at least one of the following: a second current when the disconnect mechanism is in the engaged state, a second electrical control signal.
Optionally, after generating the torque bias command, the method further comprises: the motor of the target vehicle is subjected to torque shock based on the torque bias command.
Optionally, determining the response performance of the disconnect mechanism based on the first test data and the second test data includes: determining the response performance of the disconnecting mechanism in a disconnected state according to the first test data and a preset first target parameter; and determining the response performance of the disconnecting mechanism in the engaged state according to the second test data and a preset second target parameter.
Optionally, the method further comprises: determining a plurality of off response times for the off mechanism of the target vehicle, wherein each off response time is used to characterize a time taken for the first current of the off mechanism to drop to 0 and for the off mechanism to be in an off state; determining a plurality of engagement response times for the disconnect mechanism of the target vehicle, wherein each engagement response time is used to characterize a time taken for the second current of the disconnect mechanism to increase from zero and for the disconnect mechanism to be in an engaged state; the response performance of the disconnect mechanism is determined based on the plurality of engagement response times and the plurality of disconnection response times.
Optionally, determining the response performance of the disconnect mechanism based on the plurality of engagement response times and the plurality of disconnection response times includes: comparing the ith engagement response time with the (i+1) th engagement response time, and comparing the ith disconnection response time with the (i+1) th disconnection response time to determine the response performance of the disconnection mechanism, wherein i is a positive integer greater than or equal to 1.
According to another aspect of the embodiment of the present application, there is also provided a response performance testing apparatus of a disconnection mechanism, including: the first control module is used for controlling the disconnection mechanism of the target vehicle to be disconnected and detecting a first duty ratio of the disconnection mechanism, wherein the first duty ratio is used for representing the proportional relation between the first displacement of the disconnection mechanism in the disconnection state and the maximum displacement of the disconnection mechanism; the first detection module is used for controlling the motor of the target vehicle to operate according to the motor rotating speed and the motor torque when the first duty ratio is not greater than a preset first target duty ratio, and detecting first test data of the disconnecting mechanism; a second control module for controlling engagement of a disconnect mechanism of the target vehicle and detecting a second duty cycle of the disconnect mechanism, wherein the second duty cycle is used to characterize a proportional relationship of a second displacement of the disconnect mechanism when the disconnect mechanism is in an engaged state and a maximum displacement of the disconnect mechanism; the second detection module is used for carrying out bias processing on the motor torque of the target vehicle and detecting second test data of the disconnecting mechanism when the second duty ratio is not smaller than a preset second target duty ratio; and the determining module is used for determining the response performance of the disconnection mechanism based on the first test data and the second test data.
According to another aspect of the embodiment of the present application, there is also provided a nonvolatile storage medium including a stored program, where a device in which the nonvolatile storage medium is located executes the above-described response performance test method of the disconnection mechanism by running the program.
According to another aspect of the embodiment of the present application, there is also provided an electronic device including: a memory, and a processor, wherein the memory stores a computer program, and the processor is configured to execute the response performance testing method of the opening mechanism by the computer program.
In the embodiment of the application, a disconnection mechanism of a target vehicle is controlled to be disconnected, and a first duty ratio of the disconnection mechanism is detected, wherein the first duty ratio is used for representing the proportional relation between the first displacement of the disconnection mechanism in a disconnection state and the maximum displacement of the disconnection mechanism; when the first duty ratio is not greater than a preset first target duty ratio, controlling a motor of a target vehicle to operate according to the motor rotating speed and the motor torque, and detecting first test data of a disconnecting mechanism; controlling the engagement of the disconnecting mechanism of the target vehicle, and detecting a second duty cycle of the disconnecting mechanism, wherein the second duty cycle is used for representing the proportional relation between the second displacement of the disconnecting mechanism and the maximum displacement of the disconnecting mechanism when the disconnecting mechanism is in an engaged state; when the second duty ratio is not smaller than a preset second target duty ratio, carrying out bias processing on motor torque of the target vehicle, and detecting second test data of the disconnecting mechanism; the response performance of the disconnect mechanism is determined based on the first test data and the second test data. The method comprises the steps of obtaining a plurality of groups of test data of the disconnecting mechanism in a disconnecting state and a connecting state according to the method, and determining comparison test data so as to test the response performance of the disconnecting mechanism, thereby solving the technical problem that the response performance of the disconnecting mechanism cannot be tested due to the related technology.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute a limitation on the application. In the drawings:
FIG. 1 is a flow chart of an alternative method of testing the response performance of a disconnect mechanism in accordance with an embodiment of the present application;
FIG. 2 is a schematic diagram of an alternative disconnect mechanism responsiveness test arrangement according to an embodiment of the present application;
fig. 3 is a schematic structural view of an alternative electronic device according to an embodiment of the present application.
Detailed Description
In order that those skilled in the art will better understand the present application, a technical solution in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in which it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, shall fall within the scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and the claims and drawings of the present application are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the application described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Example 1
According to an embodiment of the present application, there is provided a method of testing the response performance of a disconnect mechanism, it being noted that the steps shown in the flowchart of the figures may be performed in a computer system such as a set of computer executable instructions, and, although a logical sequence is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than that shown or described herein.
Fig. 1 is a flow chart of an alternative response performance testing method of a disconnection mechanism according to an embodiment of the present application, as shown in fig. 1, the method at least includes steps S101-S105, wherein:
step S101, the opening mechanism of the control target vehicle is opened, and the first duty ratio of the opening mechanism is detected.
In the technical solution provided in step S101, the test system generates a dc command first, detects whether the voltage of the dc power supplied to the vehicle system reaches 410V, and when the voltage reaches 410V, the test system regenerates an opening control command to control the opening mechanism of the vehicle to open, and detects an initial duty cycle (i.e., a first duty cycle) of the opening mechanism at this time, where the first duty cycle is used to characterize a proportional relationship between a first displacement of the opening mechanism in an open state and a maximum displacement of the opening mechanism, and may also be understood as a proportional relationship between a movement displacement of a certain point on the opening mechanism when the opening mechanism is in the open state and a factory-set limit displacement of the opening mechanism.
And step S102, when the first duty ratio is not greater than a preset first target duty ratio, controlling the motor of the target vehicle to operate according to the motor rotation speed and the motor torque, and detecting first test data of the disconnection mechanism.
In the technical scheme provided in step S102, when the first duty ratio of the disconnection mechanism detected by the test system is smaller than the preset first target duty ratio, the operation of the real vehicle motor is controlled according to a certain rotation speed and torque, and the first test data of the disconnection mechanism is collected in the process. The setting of the first target duty ratio may be self-running according to the actual situation, and in the embodiment of the present application, the setting is preferably set to 12%.
As an optional implementation manner, in the technical solution provided in step S102, the method may further include: when the first duty ratio is not greater than the first target duty ratio, generating a motor operation instruction of the target vehicle, wherein the motor operation instruction is used for controlling a motor of the target vehicle to operate; controlling a motor of a target vehicle to run according to the motor rotating speed and the motor torque, wherein the motor rotating speed is any one of zero and a preset target rotating speed; detecting first test data of the disconnecting mechanism, wherein the first test data comprises at least one of the following: the first current and the first electric control signal when the disconnection mechanism is in the disconnection state.
In this embodiment, when the first duty ratio is less than 12%, the test system first generates a real vehicle motor operation instruction and turns on the motor, wherein the motor turn on can be understood as starting, stopping, speed regulating, steering and other operations on the motor, detecting the operation state of the motor, and protecting the safe operation of the motor, so that the motor turn on can be realized by controlling parameters such as current, voltage, frequency and the like of the motor; then the test system generates a rotation speed request command and controls the rotation speed of the motor to be increased to a preset target rotation speed, then the test system generates a torque request command and sets motor torque, the motor is controlled to operate according to the rotation speed of the motor and the motor torque, and meanwhile first test data of the disconnecting mechanism are detected, wherein the first test data comprise but are not limited to: the first current, the first electric control signal and the first frequency when the disconnection mechanism is in the disconnection state.
Step S103, the disconnection mechanism of the control target vehicle is engaged, and the second duty ratio of the disconnection mechanism is detected.
In the technical solution provided in step S103, the test system generates a disengagement mechanism engagement command to control disengagement of the disengagement mechanism of the target vehicle, and at this time, the test system detects a second duty cycle of the disengagement mechanism, where the second duty cycle is used to characterize a proportional relationship between a second displacement of the disengagement mechanism and a maximum displacement of the disengagement mechanism when the disengagement mechanism is in an engaged state.
And step S104, when the second duty ratio is not smaller than a preset second target duty ratio, carrying out bias processing on the motor torque of the target vehicle, and detecting second test data of the disconnection mechanism.
In the technical scheme provided in step S104, the test system first determines whether the second duty cycle is a reasonable value, that is, whether the second duty cycle is greater than or equal to a preset second target duty cycle, where the setting of the second target duty cycle may also be self-running according to the actual situation, and in the embodiment of the present application, the setting is preferably 90%; next, the test system generates a torque bias command to bias the motor torque of the target vehicle, at which time the test system collects second test data for the disconnect mechanism.
As an optional implementation manner, in the technical solution provided in step S104, the method may further include: when the second duty ratio is not smaller than the second target duty ratio, generating a torque bias command, wherein the torque bias command is used for carrying out bias processing on motor torque of the target vehicle; detecting second test data of the opening mechanism based on the torque bias command, wherein the second test data comprises at least one of the following: a second current when the disconnect mechanism is in the engaged state, a second electrical control signal.
Optionally, after the torque bias command is generated, the motor of the target vehicle may be further subjected to torque oscillation based on the torque bias command.
In this embodiment, the test system generates a torque bias command to bias the motor torque of the target vehicle when the second duty cycle is not less than 90%; when the motor torque is in different bias states, the test system performs matrix oscillation and collects second test data in the process, wherein the second test data comprises but is not limited to: a second current, a second electrical control signal, and a second frequency when the disconnect mechanism is in the engaged state. In the embodiment of the application, by applying matrix oscillation signals with different frequencies and amplitudes, the response behaviors of the motor under different loads and vibration conditions in operation can be simulated to evaluate the stability, accuracy and reliability of the disconnection mechanism, thereby being beneficial to determining the performance and reliability of the disconnection mechanism in actual operation and carrying out necessary adjustment and improvement.
Step S105, determining the response performance of the opening mechanism based on the first test data and the second test data.
In the technical solution provided in step S105, the response performance of the breaking mechanism is determined based on the quality of the first test data and the second test data.
As an optional implementation manner, in the technical solution provided in step S105, the method may further include: determining the response performance of the disconnecting mechanism in a disconnected state according to the first test data and a preset first target parameter; and determining the response performance of the disconnecting mechanism in the engaged state according to the second test data and a preset second target parameter.
In this embodiment, the test system compares the test data in the off-state and the on-state with the test system's requirements for the off-performance of the off-mechanism (i.e. the preset first target parameter or the second target parameter), which may be predetermined, e.g. the current should be greater than a certain value. If the test data meets the performance requirements, the disconnect mechanism may be considered to have good response performance; otherwise, the test system considers that the response performance of the disconnection mechanism is poor.
It should be noted that, in order to ensure accuracy and reliability of the test result of the response performance of the test system to the disconnection mechanism, steps S102 to S104 may be performed cyclically to obtain multiple sets of test data of the disconnection mechanism in the disconnection state and the engagement state, and the data comparison may be performed according to step S105. In addition, testing of the response performance may also require consideration of other factors such as reliability, stability, and consistency of the disconnect mechanism. Therefore, the above factors need to be comprehensively considered in testing the response performance of the opening mechanism.
As another alternative, the test system may also determine the response performance of the disconnect mechanism by: determining a plurality of off response times for the off mechanism of the target vehicle, wherein each off response time is used to characterize a time taken for the first current of the off mechanism to drop to 0 and for the off mechanism to be in an off state; determining a plurality of engagement response times for the disconnect mechanism of the target vehicle, wherein each engagement response time is used to characterize a time taken for the second current of the disconnect mechanism to increase from zero and for the disconnect mechanism to be in an engaged state; the response performance of the disconnect mechanism is determined based on the plurality of engagement response times and the plurality of disconnection response times.
Optionally, comparing the ith engagement response time with the (i+1) th engagement response time, and comparing the ith disconnection response time with the (i+1) th disconnection response time to determine the response performance of the disconnection mechanism, wherein i is a positive integer greater than or equal to 1.
In this embodiment, the test system may test the response performance of the disconnect mechanism in the disconnected state by obtaining a disconnect response time of the disconnect mechanism, where the disconnect response time may be understood as the time from the test system issuing the disconnect signal to the disconnect mechanism completely coming out of contact, which may be recorded using a high speed camera or a professional test device. Likewise, the test system may test the response performance of the disconnect mechanism in the engaged state by acquiring an engagement response time of the disconnect mechanism, where the engagement response time may be understood as the time from the test system issuing an engagement signal to the disconnect mechanism making full contact, which may also be recorded using a high speed camera or a specialized test equipment. Further, the test system can calculate the average off-time and the average on-time by the response time of the off-mechanism in the off-state and on-state, and the standard deviation of these response times, so that the response performance of the off-mechanism can be evaluated by these response data, and if the off-response time should be less than a certain value, the off-mechanism can be regarded as having good response performance.
Based on the above-described schemes defined in steps S101 to S105, it can be known that, in the embodiment, the opening mechanism of the control target vehicle is opened, and the first duty ratio of the opening mechanism is detected, where the first duty ratio is used to characterize the proportional relationship between the first displacement of the opening mechanism when the opening mechanism is in the open state and the maximum displacement of the opening mechanism; when the first duty ratio is not greater than a preset first target duty ratio, controlling a motor of a target vehicle to operate according to the motor rotating speed and the motor torque, and detecting first test data of a disconnecting mechanism; controlling the engagement of the disconnecting mechanism of the target vehicle, and detecting a second duty cycle of the disconnecting mechanism, wherein the second duty cycle is used for representing the proportional relation between the second displacement of the disconnecting mechanism and the maximum displacement of the disconnecting mechanism when the disconnecting mechanism is in an engaged state; when the second duty ratio is not smaller than a preset second target duty ratio, carrying out bias processing on motor torque of the target vehicle, and detecting second test data of the disconnecting mechanism; the response performance of the disconnect mechanism is determined based on the first test data and the second test data. The method comprises the steps of obtaining a plurality of groups of test data of the disconnecting mechanism in a disconnecting state and a connecting state according to the method, and determining comparison test data so as to test the response performance of the disconnecting mechanism, thereby solving the technical problem that the response performance of the disconnecting mechanism cannot be tested due to the related technology.
Example 2
Based on embodiment 1 of the present application, there is also provided an embodiment of a response performance testing apparatus of a disconnection mechanism, which executes the response performance testing method of the disconnection mechanism of the above embodiment when running. Fig. 2 is a schematic structural diagram of an alternative response performance testing apparatus for a disconnection mechanism according to an embodiment of the present application, where, as shown in fig. 2, the response performance testing apparatus for a disconnection mechanism includes at least a first control module 21, a first detection module 22, a second control module 23, a second detection module 24, and a determination module 25, where:
the first control module 21 is configured to control the opening mechanism of the target vehicle to open, and detect a first duty cycle of the opening mechanism, where the first duty cycle is used to characterize a proportional relationship between a first displacement of the opening mechanism when the opening mechanism is in an open state and a maximum displacement of the opening mechanism.
Specifically, the first control module 21 generates a disconnection control instruction to control the disconnection mechanism of the vehicle to disconnect, and detects an initial duty cycle (i.e., a first duty cycle) of the disconnection mechanism at this time, where the first duty cycle is used to characterize a proportional relationship between a first displacement of the disconnection mechanism in a disconnected state and a maximum displacement of the disconnection mechanism, and may also be understood as a proportional relationship between a movement displacement of a point on the disconnection mechanism when the disconnection mechanism is in the disconnected state and a factory-set limit displacement of the disconnection mechanism.
The first detection module 22 is configured to control the motor of the target vehicle to operate according to the motor rotation speed and the motor torque when the first duty ratio is not greater than a preset first target duty ratio, and detect first test data of the disconnection mechanism.
Specifically, when the first duty cycle of the disconnect mechanism is less than the preset first target duty cycle, the first detection module 22 will control the actual motor to operate according to a certain rotation speed and torque, and collect the first test data of the disconnect mechanism in the process. The setting of the first target duty ratio may be self-running according to the actual situation, and in the embodiment of the present application, the setting is preferably set to 12%.
As an alternative embodiment, the first detection module 22 is further configured to generate a motor operation command of the target vehicle when the first duty cycle is not greater than the first target duty cycle, where the motor operation command is used to control the motor of the target vehicle to operate; controlling a motor of a target vehicle to run according to the motor rotating speed and the motor torque, wherein the motor rotating speed is any one of zero and a preset target rotating speed; detecting first test data of the disconnecting mechanism, wherein the first test data comprises at least one of the following: the first current and the first electric control signal when the disconnection mechanism is in the disconnection state.
In this embodiment, when the first duty ratio is less than 12%, the first detection module 22 first generates a real vehicle motor operation instruction and turns on the motor, where the motor turn on can be understood as starting, stopping, speed adjusting, steering, and the like, and detecting the operation state of the motor, so as to protect the safe operation of the motor, and thus the motor turn on can be realized by controlling parameters such as current, voltage, frequency, and the like of the motor; then, the first detection module 22 generates a rotation speed request command and controls the rotation speed of the motor to rise to a preset target rotation speed, then the first detection module 22 generates a torque request command and sets a motor torque, controls the motor to operate according to the rotation speed of the motor and the motor torque, and simultaneously detects first test data of the disconnecting mechanism, wherein the first test data includes but is not limited to: the first current, the first electric control signal and the first frequency when the disconnection mechanism is in the disconnection state.
A second control module 23 for controlling engagement of the disconnect mechanism of the subject vehicle and detecting a second duty cycle of the disconnect mechanism, wherein the second duty cycle is used to characterize a proportional relationship of a second displacement of the disconnect mechanism when in an engaged state to a maximum displacement of the disconnect mechanism.
Specifically, the second control module 23 generates a disconnect mechanism engagement command to control engagement of the target vehicle disconnect mechanism, at which time the test system detects a second duty cycle of the disconnect mechanism, wherein the second duty cycle is used to characterize a proportional relationship of the second displacement of the disconnect mechanism to the maximum displacement of the disconnect mechanism when the disconnect mechanism is in the engaged state.
And a second detection module 24, configured to bias the motor torque of the target vehicle when the second duty cycle is not less than a preset second target duty cycle, and detect second test data of the disconnect mechanism.
Specifically, the second detection module 24 first determines whether the second duty cycle is a reasonable value, that is, whether the second duty cycle is greater than or equal to a preset second target duty cycle, where the setting of the second target duty cycle may also be self-running according to the actual situation, and in the embodiment of the present application, the setting is preferably 90%; next, the second detection module 24 generates a torque bias command to bias the motor torque of the target vehicle, at which time the second detection module 24 collects second test data for the disconnect mechanism.
As an alternative embodiment, the second detection module 24 is further configured to generate a torque bias command when the second duty cycle is not less than the second target duty cycle, where the torque bias command is used to bias the motor torque of the target vehicle; detecting second test data of the opening mechanism based on the torque bias command, wherein the second test data comprises at least one of the following: a second current when the disconnect mechanism is in the engaged state, a second electrical control signal.
Optionally, after generating the torque bias command, the second detection module 24 may also perform a torque shock test on the electric machine of the target vehicle based on the torque bias command.
In this embodiment, the second detection module 24 generates a torque bias command to bias the motor torque of the target vehicle when the second duty cycle is not less than 90%; when the motor torque is in different bias states, the second detection module 24 performs matrix oscillation, and collects second test data in the process, wherein the second test data includes but is not limited to: a second current, a second electrical control signal, and a second frequency when the disconnect mechanism is in the engaged state. In the embodiment of the application, by applying matrix oscillation signals with different frequencies and amplitudes, the response behaviors of the motor under different loads and vibration conditions in operation can be simulated to evaluate the stability, accuracy and reliability of the disconnection mechanism, thereby being beneficial to determining the performance and reliability of the disconnection mechanism in actual operation and carrying out necessary adjustment and improvement.
A determining module 25 for determining the response performance of the breaking mechanism based on the first test data and the second test data.
Specifically, in the embodiment of the application, the response performance of the disconnection mechanism can be determined based on the quality of the first test data and the second test data.
As an alternative embodiment, the determining module 25 is further configured to determine, according to the first test data and a preset first target parameter, a response performance of the disconnection mechanism in the disconnected state; and determining the response performance of the disconnecting mechanism in the engaged state according to the second test data and a preset second target parameter.
In this embodiment, the determining module 25 compares the test data in the off-state and the on-state with the off-performance requirements (i.e. the preset first target parameter or the second target parameter) of the test system on the off-mechanism, which may be predetermined, such as that the current should be greater than a certain value. If the test data meets the performance requirements, the disconnect mechanism may be considered to have good response performance; otherwise, the determination module 25 considers the response performance of the opening mechanism to be poor.
As another alternative, the determination module 25 may also determine the response performance of the disconnect mechanism by: determining a plurality of off response times for the off mechanism of the target vehicle, wherein each off response time is used to characterize a time taken for the first current of the off mechanism to drop to 0 and for the off mechanism to be in an off state; determining a plurality of engagement response times for the disconnect mechanism of the target vehicle, wherein each engagement response time is used to characterize a time taken for the second current of the disconnect mechanism to increase from zero and for the disconnect mechanism to be in an engaged state; the response performance of the disconnect mechanism is determined based on the plurality of engagement response times and the plurality of disconnection response times.
Optionally, comparing the ith engagement response time with the (i+1) th engagement response time, and comparing the ith disconnection response time with the (i+1) th disconnection response time to determine the response performance of the disconnection mechanism, wherein i is a positive integer greater than or equal to 1.
In this embodiment, the determination module 25 may test the response performance of the disconnect mechanism in the disconnected state by obtaining a disconnect response time of the disconnect mechanism, where the disconnect response time may be understood as the time from the issuance of the disconnect signal by the test system to the complete disengagement of the disconnect mechanism, which may be recorded using a high speed camera or a specialized test equipment. Likewise, determination module 25 may test the response of the disconnect mechanism in the engaged state by obtaining an engagement response time of the disconnect mechanism, where the engagement response time may be understood as the time from the test system issuing the engagement signal to the disconnect mechanism making full contact, which may also be recorded using a high speed camera or a specialized test equipment. Further, the determination module 25 may calculate the average off-time and the average on-response time from the response time of the off-mechanism in the off-state and the on-state, and the standard deviation of these response times, so that the response performance of the off-mechanism is estimated from these response data, and if the off-response time should be less than a certain value, the off-mechanism may be regarded as having good response performance.
Each module in the response performance testing device of the disconnecting mechanism controls the disconnecting mechanism of the target vehicle to be disconnected, and detects a first duty ratio of the disconnecting mechanism, wherein the first duty ratio is used for representing the proportional relation between the first displacement of the disconnecting mechanism in a disconnected state and the maximum displacement of the disconnecting mechanism; when the first duty ratio is not greater than a preset first target duty ratio, controlling a motor of a target vehicle to operate according to the motor rotating speed and the motor torque, and detecting first test data of a disconnecting mechanism; controlling the engagement of the disconnecting mechanism of the target vehicle, and detecting a second duty cycle of the disconnecting mechanism, wherein the second duty cycle is used for representing the proportional relation between the second displacement of the disconnecting mechanism and the maximum displacement of the disconnecting mechanism when the disconnecting mechanism is in an engaged state; when the second duty ratio is not smaller than a preset second target duty ratio, carrying out bias processing on motor torque of the target vehicle, and detecting second test data of the disconnecting mechanism; the response performance of the disconnect mechanism is determined based on the first test data and the second test data. The method comprises the steps of obtaining a plurality of groups of test data of the disconnecting mechanism in a disconnecting state and a connecting state according to the method, and determining comparison test data so as to test the response performance of the disconnecting mechanism, thereby solving the technical problem that the response performance of the disconnecting mechanism cannot be tested due to the related technology.
It should be noted that, each module in the response performance testing device for the disconnection mechanism in the embodiment of the present application corresponds to each implementation step of the response performance testing method for the disconnection mechanism in embodiment 1 one by one, and since detailed description has been made in embodiment 1, details not shown in part in this embodiment may refer to embodiment 1, and will not be described in detail here.
Example 3
According to an embodiment of the present application, there is also provided a nonvolatile storage medium having a program stored therein, wherein the device in which the nonvolatile storage medium is controlled to execute the response performance test method of the disconnection mechanism in embodiment 1 when the program runs.
Optionally, the device where the nonvolatile storage medium is located performs the following steps by running the program:
step S101, controlling a disconnection mechanism of a target vehicle to disconnect, and detecting a first duty ratio of the disconnection mechanism, wherein the first duty ratio is used for representing a proportional relationship between a first displacement of the disconnection mechanism and a maximum displacement of the disconnection mechanism when the disconnection mechanism is in a disconnection state;
step S102, when the first duty ratio is not greater than a preset first target duty ratio, controlling a motor of a target vehicle to operate according to the motor rotation speed and the motor torque, and detecting first test data of a disconnection mechanism;
Step S103, controlling the disconnection mechanism of the target vehicle to be engaged, and detecting a second duty ratio of the disconnection mechanism, wherein the second duty ratio is used for representing the proportional relation between the second displacement of the disconnection mechanism and the maximum displacement of the disconnection mechanism when the disconnection mechanism is in an engaged state;
step S104, when the second duty ratio is not smaller than a preset second target duty ratio, carrying out bias processing on the motor torque of the target vehicle, and detecting second test data of the disconnecting mechanism;
step S105, determining the response performance of the opening mechanism based on the first test data and the second test data.
According to an embodiment of the present application, there is also provided a processor for running a program, wherein the program runs while executing the response performance test method of the disconnection mechanism in embodiment 1.
Optionally, the program execution realizes the following steps:
step S101, controlling a disconnection mechanism of a target vehicle to disconnect, and detecting a first duty ratio of the disconnection mechanism, wherein the first duty ratio is used for representing a proportional relationship between a first displacement of the disconnection mechanism and a maximum displacement of the disconnection mechanism when the disconnection mechanism is in a disconnection state;
step S102, when the first duty ratio is not greater than a preset first target duty ratio, controlling a motor of a target vehicle to operate according to the motor rotation speed and the motor torque, and detecting first test data of a disconnection mechanism;
Step S103, controlling the disconnection mechanism of the target vehicle to be engaged, and detecting a second duty ratio of the disconnection mechanism, wherein the second duty ratio is used for representing the proportional relation between the second displacement of the disconnection mechanism and the maximum displacement of the disconnection mechanism when the disconnection mechanism is in an engaged state;
step S104, when the second duty ratio is not smaller than a preset second target duty ratio, carrying out bias processing on the motor torque of the target vehicle, and detecting second test data of the disconnecting mechanism;
step S105, determining the response performance of the opening mechanism based on the first test data and the second test data.
There is further provided, in accordance with an embodiment of the present application, an electronic device, where fig. 3 is a schematic structural diagram of an alternative electronic device according to an embodiment of the present application, and as shown in fig. 3, the electronic device includes one or more processors; and a memory for storing one or more programs which, when executed by the one or more processors, cause the one or more processors to implement a method for running the programs, wherein the programs are configured to execute the response performance test method of the disconnection mechanism in embodiment 1 described above when run.
Optionally, the processor is configured to implement the following steps by computer program execution:
Step S101, controlling a disconnection mechanism of a target vehicle to disconnect, and detecting a first duty ratio of the disconnection mechanism, wherein the first duty ratio is used for representing a proportional relationship between a first displacement of the disconnection mechanism and a maximum displacement of the disconnection mechanism when the disconnection mechanism is in a disconnection state;
step S102, when the first duty ratio is not greater than a preset first target duty ratio, controlling a motor of a target vehicle to operate according to the motor rotation speed and the motor torque, and detecting first test data of a disconnection mechanism;
step S103, controlling the disconnection mechanism of the target vehicle to be engaged, and detecting a second duty ratio of the disconnection mechanism, wherein the second duty ratio is used for representing the proportional relation between the second displacement of the disconnection mechanism and the maximum displacement of the disconnection mechanism when the disconnection mechanism is in an engaged state;
step S104, when the second duty ratio is not smaller than a preset second target duty ratio, carrying out bias processing on the motor torque of the target vehicle, and detecting second test data of the disconnecting mechanism;
step S105, determining the response performance of the opening mechanism based on the first test data and the second test data.
The foregoing embodiment numbers of the present application are merely for the purpose of description, and do not represent the advantages or disadvantages of the embodiments.
In the foregoing embodiments of the present application, the descriptions of the embodiments are emphasized, and for a portion of this disclosure that is not described in detail in this embodiment, reference is made to the related descriptions of other embodiments.
In the several embodiments provided in the present application, it should be understood that the disclosed technology may be implemented in other manners. The above-described embodiments of the apparatus are merely exemplary, and the division of units may be a logic function division, and there may be another division manner in actual implementation, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some interfaces, units or modules, or may be in electrical or other forms.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.
The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be embodied in essence or a part contributing to the prior art or all or part of the technical solution in the form of a software product stored in a storage medium, comprising several instructions for causing a computer device (which may be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method of the various embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a removable hard disk, a magnetic disk, or an optical disk, or other various media capable of storing program codes.
The foregoing is merely a preferred embodiment of the present application and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present application, which are intended to be comprehended within the scope of the present application.
Claims (10)
1. A response performance test method of a disconnection mechanism, characterized by comprising:
controlling a disconnection mechanism of a target vehicle to disconnect, and detecting a first duty cycle of the disconnection mechanism, wherein the first duty cycle is used for representing a proportional relationship between a first displacement of the disconnection mechanism when the disconnection mechanism is in a disconnection state and a maximum displacement of the disconnection mechanism;
when the first duty ratio is not greater than a preset first target duty ratio, controlling a motor of the target vehicle to operate according to the motor rotating speed and the motor torque, and detecting first test data of the disconnecting mechanism;
controlling a disconnect mechanism of the target vehicle to engage and detecting a second duty cycle of the disconnect mechanism, wherein the second duty cycle is used to characterize a proportional relationship of a second displacement of the disconnect mechanism when in an engaged state to a maximum displacement of the disconnect mechanism;
when the second duty ratio is not smaller than a preset second target duty ratio, carrying out bias processing on the motor torque of the target vehicle, and detecting second test data of the disconnecting mechanism;
a response performance of the disconnect mechanism is determined based on the first test data and the second test data.
2. The method of claim 1, wherein controlling the motor of the target vehicle to operate in accordance with the motor speed and the motor torque when the first duty cycle is not greater than a preset first target duty cycle, and detecting first test data of the disconnect mechanism, comprises:
generating a motor operation instruction of the target vehicle when the first duty ratio is not greater than the first target duty ratio, wherein the motor operation instruction is used for controlling a motor of the target vehicle to operate;
controlling a motor of the target vehicle to run according to the motor rotating speed and the motor torque, wherein the motor rotating speed is any one from zero to a preset target rotating speed;
detecting first test data of the disconnecting mechanism, wherein the first test data comprises at least one of the following: the first current and the first electric control signal are generated when the disconnection mechanism is in a disconnection state.
3. The method according to claim 1, wherein when the second duty ratio is not smaller than a preset second target duty ratio, biasing the motor torque of the target vehicle, and detecting second test data of the disconnect mechanism, includes:
Generating a torque bias command when the second duty ratio is not smaller than the second target duty ratio, wherein the torque bias command is used for carrying out bias processing on motor torque of the target vehicle;
detecting second test data of the disconnect mechanism based on the torque bias command, wherein the second test data includes at least one of: and a second current and a second electric control signal when the disconnection mechanism is in an engaged state.
4. A method according to claim 3, wherein after generating the torque bias command, the method further comprises:
and performing torque oscillation on a motor of the target vehicle based on the torque bias command.
5. The method of claim 1, wherein determining the response performance of the disconnect mechanism based on the first test data and the second test data comprises:
determining the response performance of the disconnection mechanism in a disconnection state according to the first test data and a preset first target parameter;
and determining the response performance of the disconnecting mechanism in the connection state according to the second test data and a preset second target parameter.
6. The method according to claim 1, wherein the method further comprises:
Determining a plurality of off response times for an off mechanism of the target vehicle, wherein each off response time is used to characterize a time taken for a first current of the off mechanism to drop to 0 and the off mechanism is in an off state;
determining a plurality of engagement response times for a disconnect mechanism of the target vehicle, wherein each of the engagement response times is used to characterize a time taken for a second current of the disconnect mechanism to increase from zero and the disconnect mechanism is in an engaged state;
a response performance of the disconnect mechanism is determined based on a plurality of the engagement response times and a plurality of the disconnection response times.
7. The method of claim 6, wherein determining the response performance of the disconnect mechanism based on a plurality of the engagement response times and a plurality of the disconnection response times comprises:
comparing the ith engagement response time with the (i+1) th engagement response time, and comparing the ith disconnection response time with the (i+1) th disconnection response time to determine the response performance of the disconnection mechanism, wherein i is a positive integer greater than or equal to 1.
8. A response performance test device of a disconnection mechanism, characterized by comprising:
The control device comprises a first control module, a second control module and a first control module, wherein the first control module is used for controlling a disconnecting mechanism of a target vehicle to be disconnected and detecting a first duty ratio of the disconnecting mechanism, wherein the first duty ratio is used for representing a proportional relation between a first displacement of the disconnecting mechanism in a disconnected state and a maximum displacement of the disconnecting mechanism;
the first detection module is used for controlling the motor of the target vehicle to operate according to the motor rotating speed and the motor torque when the first duty ratio is not larger than a preset first target duty ratio, and detecting first test data of the disconnecting mechanism;
a second control module for controlling engagement of a disconnect mechanism of the target vehicle and detecting a second duty cycle of the disconnect mechanism, wherein the second duty cycle is used to characterize a proportional relationship of a second displacement of the disconnect mechanism when in an engaged state to a maximum displacement of the disconnect mechanism;
the second detection module is used for carrying out offset processing on the motor torque of the target vehicle when the second duty ratio is not smaller than a preset second target duty ratio and detecting second test data of the disconnection mechanism;
and the determining module is used for determining the response performance of the disconnection mechanism based on the first test data and the second test data.
9. A nonvolatile storage medium, characterized in that the nonvolatile storage medium includes a stored program, wherein a device in which the nonvolatile storage medium is located executes the response performance test method of the disconnection mechanism according to any one of claims 1 to 7 by running the program.
10. An electronic device, comprising: a memory and a processor, wherein the memory stores a computer program, and the processor is configured to execute the response performance testing method of the opening mechanism according to any one of claims 1 to 7 by the computer program.
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| CN202310840913.3A CN116907874A (en) | 2023-07-10 | 2023-07-10 | Method and device for testing response performance of disconnecting mechanism |
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| CN202310840913.3A CN116907874A (en) | 2023-07-10 | 2023-07-10 | Method and device for testing response performance of disconnecting mechanism |
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