CN109668741B - Device, system and method for detecting parking actuating mechanism of pure electric vehicle - Google Patents
Device, system and method for detecting parking actuating mechanism of pure electric vehicle Download PDFInfo
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- CN109668741B CN109668741B CN201811472880.7A CN201811472880A CN109668741B CN 109668741 B CN109668741 B CN 109668741B CN 201811472880 A CN201811472880 A CN 201811472880A CN 109668741 B CN109668741 B CN 109668741B
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Abstract
The application discloses a device, a system and a method for detecting a parking actuating mechanism of a pure electric vehicle, and relates to the technical field of electric vehicles. In the application, parameters of corresponding parts in the parking actuating mechanism (such as an assembly angle of a parking gear shifting shaft, a position of a ratchet wheel relative to a pawl, a torque of a parking return spring and the like) are collected through a sensor, so that a computer can conveniently perform simulation modeling on the actually measured parking actuating mechanism, and the parking actuating mechanism is detected through a simulation model of the parking actuating mechanism. The trouble of installation, dismantlement that real car test brought has been removed from, detection efficiency is improved. The influence of other parts in the real vehicle on the parking actuating mechanism during the real vehicle test can be reduced through the simulation model, so that the detection accuracy is improved.
Description
Technical Field
The application relates to the technical field of electric automobiles, in particular to a detection device, a system and a method for a parking execution mechanism of a pure electric automobile.
Background
Pure electric vehicles are widely pursued in the industry due to energy conservation and environmental protection. Therefore, pure electric vehicles with good performance are always sought in the industry. Since the parking actuator affects the parking performance of the electric vehicle, the parking actuator is often required to be detected before the electric vehicle is actually put into production.
In the conventional method, the parking actuator is first manufactured and then mounted on a real vehicle for inspection. However, such detection is complex in actual vehicle installation and disassembly, and requires a large number of long-period benches, whole vehicle debugging and test verification, which wastes manpower and material resources and has low detection efficiency. On the other hand, the detection result is not accurate due to the influence of other parts of the real vehicle.
Disclosure of Invention
The embodiment of the application provides a detection device, a system and a method for a parking execution mechanism of a pure electric vehicle, and is used for solving the problems that in the prior art, the real vehicle detection development efficiency and the detection efficiency are low, the detection result is inaccurate, and the like.
First aspect, this application provides a pure electric vehicles's parking actuating mechanism detection device, including parking actuating mechanism, angle sensor, position sensor, spring torsion sensor, treater, wherein:
the angle sensor is arranged on a parking gear shifting shaft of the parking actuating mechanism and used for collecting the assembly angle of the parking gear shifting shaft and sending the assembly angle to the processor;
the position sensor is positioned on a parking ratchet wheel of the parking actuating mechanism and is used for being matched with the angle sensor to acquire the position of the ratchet wheel on the parking actuating mechanism relative to a pawl and sending acquired position information to the processor, and the position information is used for indicating the position of a gear or a groove on the ratchet wheel relative to the pawl on the parking actuating mechanism;
the spring torsion sensor is used for being matched with the angle sensor to acquire the torque of a parking return spring of the parking actuating mechanism and sending the torque to the processor;
the processor is positioned on the parking executing structure and used for determining whether parking simulation is executed or released according to the assembly angle, the position information and the moment, generating a simulation instruction according to a determined result and sending the simulation instruction to a computer for simulation test so as to initialize a pre-established parking executing mechanism simulation model according to the assembly angle, the position information and the moment in the simulation instruction sent by the processor by the computer, and then carrying out corresponding simulation experiment according to the instruction information to obtain the performance parameters of the parking executing mechanism; the simulation instruction comprises instruction information for executing parking simulation or releasing parking simulation, and an assembly angle, position information and moment corresponding to the executed simulation.
In a second aspect, a detection system for a parking actuator of a pure electric vehicle is provided, the system includes the parking actuator, an angle sensor, a position sensor, a spring torsion sensor, a processor and a computer, wherein:
the angle sensor is arranged on a parking gear shifting shaft of the parking actuating mechanism and used for collecting the assembly angle of the parking gear shifting shaft and sending the assembly angle to the processor;
the position sensor is positioned on a parking ratchet wheel of the parking actuating mechanism and is used for being matched with the angle sensor to acquire the position of the ratchet wheel on the parking actuating mechanism relative to a pawl and sending acquired position information to the processor, and the position information is used for indicating the position of a gear or a groove on the ratchet wheel relative to the pawl on the parking actuating mechanism;
the spring torsion sensor is used for being matched with the angle sensor to acquire the torque of a parking return spring of the parking actuating mechanism and sending the torque to the processor;
the processor is positioned on the parking execution structure and used for determining whether to execute parking simulation or release parking simulation according to the assembly angle, the position information and the moment, and generating a simulation instruction to the computer according to a determined result; the simulation instruction comprises instruction information for executing parking simulation or releasing parking simulation, and an assembly angle, position information and moment corresponding to the executed simulation;
and the computer is used for initializing a pre-established parking executing mechanism simulation model according to the assembly angle, the position information and the moment in the simulation instruction sent by the processor, and then carrying out corresponding simulation experiments according to the instruction information to obtain the performance parameters of the parking executing mechanism.
In a third aspect, a method for detecting a parking actuator of a pure electric vehicle is provided, where the method includes:
acquiring an assembly angle of a parking gear shifting shaft of the parking actuating mechanism through an angle sensor;
acquiring position information of a ratchet wheel on the parking actuating mechanism relative to a pawl through a position sensor, wherein the position information is used for indicating the position of a gear or a groove on the ratchet wheel relative to the pawl on the parking actuating mechanism;
acquiring the torque of a parking return spring of the parking actuating mechanism through a spring torsion sensor;
and determining whether to execute parking simulation or release parking simulation according to the assembly angle, the position information and the torque, generating a simulation instruction to the computer according to a determined result, so that a pre-established parking execution mechanism simulation model is initialized according to the assembly angle, the position information and the torque in the simulation instruction sent by the processor by the computer, and then carrying out corresponding simulation experiment according to the instruction information to obtain the performance parameters of the parking execution mechanism.
In a fourth aspect, a device for detecting a parking actuator of another electric-only vehicle is provided, the device comprising:
the assembly angle acquisition module is used for acquiring the assembly angle of a parking gear shifting shaft of the parking actuating mechanism through an angle sensor;
the position information acquisition module is used for acquiring position information of a ratchet wheel on the parking actuating mechanism relative to a pawl through a position sensor, and the position information is used for representing the position of a gear or a groove on the ratchet wheel relative to the pawl on the parking actuating mechanism;
the torque acquisition module is used for acquiring the torque of a parking return spring of the parking actuating mechanism through a spring torsion sensor;
and the determining module is used for determining whether to execute parking simulation or release parking simulation according to the assembly angle, the position information and the moment, generating a simulation instruction according to a determined result and sending the simulation instruction to the computer, so that a pre-established parking execution mechanism simulation model is initialized according to the assembly angle, the position information and the moment in the simulation instruction sent by the processor by the computer, and then corresponding simulation experiments are carried out according to the instruction information to obtain the performance parameters of the parking execution mechanism.
Another embodiment of the present application also provides a computing device comprising at least one processor; and a memory communicatively coupled to the at least one processor; the storage stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor, so that the at least one processor can execute the detection method for the parking execution mechanism of any pure electric vehicle provided by the embodiment of the application.
Another embodiment of the present application further provides a computer storage medium, where the computer storage medium stores computer-executable instructions for causing a computer to execute a method for detecting a parking actuator of any pure electric vehicle in an embodiment of the present application.
According to the device, the system and the method for detecting the parking executing mechanism of the pure electric vehicle, parameters of corresponding parts in the parking executing mechanism are collected through the sensor, so that a computer can conveniently perform simulation modeling on the actually measured parking executing mechanism, and the detection on the parking executing mechanism can be realized through a simulation model of the parking executing mechanism. The trouble of installation, dismantlement that real car test brought has been removed from, detection efficiency is improved. The influence of other parts in the real vehicle on the parking actuating mechanism during the real vehicle test can be reduced through the simulation model, so that the detection accuracy is improved.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
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 application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
FIG. 1 is a schematic view of a detection application scenario of a parking actuating mechanism of a pure electric vehicle in an embodiment of the application;
FIG. 2 is a frame schematic diagram of a parking actuator detection device of a pure electric vehicle in an embodiment of the present application;
FIG. 3a is a schematic diagram of a ratchet and pawl and a position sensor in a parking actuating mechanism of a pure electric vehicle in an embodiment of the present application;
FIG. 3b is a diagram illustrating an upper limit of a first distance when a position sensor in a parking actuator of a pure electric vehicle detects a protruding tooth according to an embodiment of the present application;
FIG. 3c is a schematic frame diagram of a parking actuator detection system of a pure electric vehicle in an embodiment of the present application;
FIG. 4 is a flowchart illustrating one of the detection methods of the parking actuator of the blade electric vehicle according to the embodiment of the present application;
FIG. 5 is a second flowchart illustrating a method for detecting a parking actuator of a pure electric vehicle according to an embodiment of the present application;
FIG. 6 is a schematic view of a detection device of a parking execution mechanism of a pure electric vehicle in an embodiment of the application;
fig. 7 is a schematic structural diagram of a computing device according to an embodiment of the present application.
Detailed Description
In order to improve the detection efficiency of the parking execution structure of the pure electric vehicle and the accuracy of a detection result, the embodiment of the application provides a device, a system and a method for detecting the parking execution structure of the pure electric vehicle. In order to better understand the technical solution provided by the embodiments of the present application, the following brief description is made on the basic principle of the solution:
as shown in fig. 1, an application scenario diagram of a parking actuator detection system of a pure electric vehicle provided in an embodiment of the present application is shown. The application scenario includes a single chip microcomputer 101 and three sensors in the parking actuator 100. Wherein, the three sensors are respectively:
the angle sensor 102 is used for acquiring an assembly angle of the parking shift shaft; the assembly angle is used for representing the rotating angle of the gear shifting shaft; specifically, assuming that the shift shaft has an angle of 0 in the neutral position and an angle of a in the parking position, the range of the assembly angle is between 0 and a.
The position sensor 103 is used for acquiring the position of a ratchet wheel on the parking actuating mechanism relative to a pawl and sending acquired position information;
and a spring torsion sensor 104 for acquiring the torque of the parking return spring.
During detection, the parking gear shifting shaft rotates by a certain angle, the parking return spring generates torque, and meanwhile, a ratchet wheel in the parking executing mechanism automatically rotates at a set rotating speed.
The single chip microcomputer 101 determines whether the parking shift shaft is rotated to perform parking or release parking according to information collected by the sensors, and then transmits sensor information corresponding to the parking execution or release parking, which is collected by the sensors, to the computer 200.
The computer 200 initializes a pre-established parking actuator simulation model according to the sensor information so as to establish a corresponding relationship among an assembly angle, a ratchet position and a moment to realize the simulation of the entity parking actuator to be tested. And then carrying out a simulation experiment according to the simulation model to obtain a detection result.
The singlechip and the computer can be communicated in a wireless communication mode or a wired communication mode.
The following further describes the solution of the present application with reference to the accompanying drawings, and fig. 2 is a schematic frame diagram of a detection system of a parking actuator of a pure electric vehicle, including: parking actuator 201, angle sensor 202, position sensor 203, spring torsion sensor 204, processor 205, wherein:
the angle sensor 202 is arranged on a parking shift shaft of the parking actuating mechanism 201, and is used for acquiring an assembly angle of the parking shift shaft and sending the assembly angle to the processor 205;
the position sensor 203 is located on the parking ratchet wheel of the parking actuator 201, and is used for acquiring the position of the ratchet wheel on the parking actuator 201 relative to the pawl and sending the acquired position information to the processor 205 in cooperation with the angle sensor 202, wherein the position information is used for indicating the position of a gear or a groove on the ratchet wheel relative to the pawl on the parking actuator 201;
the spring torsion sensor 204 is configured to cooperate with the angle sensor 202 to acquire a torque of a parking return spring of the parking actuator 201 and send the torque to the processor 205;
the processor 205 is located on the parking executing structure, and is configured to determine whether to execute parking simulation or release parking simulation according to the assembly angle, the position information, and the torque, and generate a simulation instruction according to the determination result to a computer (not shown in the figure), so that the computer initializes a pre-established parking executing mechanism simulation model according to the assembly angle, the position information, and the torque in the simulation instruction sent by the processor, and then performs a corresponding simulation experiment according to the instruction information to obtain performance parameters of the parking executing mechanism; the simulation instruction comprises instruction information for executing parking simulation or releasing parking simulation, and an assembly angle, position information and moment corresponding to the executed simulation;
wherein the performance parameters of the parking actuator 201 may comprise at least one of the following information:
when parking, the ratchet wheel positions at different assembly angles, the parking response time at the assembly angle capable of completing parking, the torque at the assembly angle capable of completing parking and the like;
when the parking is released, the parking releasing response time under different assembly angles, the ratchet positions under different assembly angles, the torque of the parking return spring before and after the parking is released and the like.
The parking state curves, i.e., the curves of the total angle and the ratchet position when parking and releasing, can be plotted according to the ratchet position at different assembly angles, so as to determine whether the pawl rotates by a corresponding angle.
Whether the parking actuator is completed and released within a desired period of time may be determined according to a response time to complete parking and a response time to release parking.
According to the torque of the parking return spring, whether the working performance of the parking return spring reaches the expectation or not can be analyzed.
Therefore, parameters of corresponding parts in the parking executing mechanism are collected through the sensor, so that the computer can conveniently carry out simulation modeling on the actually measured parking executing mechanism, and the detection on the parking executing mechanism can be realized through a simulation model of the parking executing mechanism. The trouble of installation, dismantlement that real car test brought has been removed from, detection efficiency is improved. The influence of other parts in the real vehicle on the parking actuating mechanism during the real vehicle test can be reduced through the simulation model, so that the detection accuracy is improved.
Further, in this embodiment of the application, in order to save cost, the processor 205 may be a single chip microcomputer.
Further, as shown in fig. 3a, the position sensor 203 may be an optoelectronic position sensor, the light emitting diode of the optoelectronic position sensor is aligned with the outer edge of the groove where the ratchet wheel and the pawl are matched, and the center line of the optoelectronic position sensor is located in the ratchet wheel rotation plane and perpendicular to the ratchet wheel rotation center. When the photoelectric position sensor collects a signal within a first designated distance, the convex teeth of the ratchet wheel are aligned with the pawl, so that the pawl cannot rotate continuously for a larger angle and is clamped into the ratchet wheel groove, and the parking action is failed to be executed; when the photoelectric position sensor does not acquire a signal within the first designated distance, the groove of the ratchet wheel is aligned with the parking pawl, so that the pawl can continuously rotate by a larger angle and is clamped into the groove of the ratchet wheel, and parking is finished. Wherein the maximum value of the first designated distance is the distance that the position sensor detects the upper surface of the pawl shown in fig. 3b (indicated as the "surface designated by the maximum value of the first designated distance" in fig. 3 b).
Preferably, a PSD (position sensitive detector) position sensor may be used. The photoelectric position sensor is an optical detector capable of measuring the successive positions of the light spots on the detector surface. Is a novel photoelectric device or coordinate photoelectric cell. It is a non-split device that converts the spot location on the photosurface into an electrical signal. The PSD consists of a p substrate, a pin photodiode and a surface resistor. The method has the advantages of high position resolution, high response speed, simple processing circuit and the like.
Further, the processor 205 may determine whether to execute the parking simulation according to the following method:
firstly, determining whether an assembly angle acquired by an angle sensor 202 is greater than a preset angle; if the angle is larger than the preset angle, determining whether the position information indicates that the pawl of the parking executing mechanism 201 is clamped in the groove of the ratchet wheel; and if the parking return spring is clamped in the groove and the torque of the parking return spring is determined to be larger than the preset torque, the parking simulation is determined to be executed.
Correspondingly, if the assembly angle is not larger than the preset angle, determining whether the torque is reduced or not according to the collected torque of the parking return spring; if the torque is reduced, determining to execute the parking releasing simulation; if the torque is not decreased, the return to determining whether the assembly angle collected by the angle sensor 202 is greater than the predetermined angle may be performed.
In specific implementation, whether the torque is reduced or not can be determined according to the torque collected in a period of time. If the magnitude of the moment collected at present and the magnitude of the moment collected at the previous time are compared, whether the moment is reduced or not can be determined.
Further, the processor may determine to execute the parking release simulation when it is determined that the assembly angle acquired by the angle sensor is not greater than the preset angle, and the acquired assembly angle has a tendency of becoming smaller and the position information indicates that the pawl is not clamped in the groove of the ratchet wheel. That is, when the assembly angle is continuously decreased, the shift shaft is rotated in the parking release direction, whereby it can be determined that the performed operation is the parking release operation.
Based on the same inventive concept, the present application further provides a detection system of a parking actuator, as shown in fig. 3c, which is a schematic diagram of a frame of the detection system, and includes: parking actuator 201, angle sensor 202, position sensor 203, spring torsion sensor 204, processor 205 and computer 206, wherein:
the angle sensor 202 is arranged on a parking shift shaft of the parking actuating mechanism 201, and is used for acquiring an assembly angle of the parking shift shaft and sending the assembly angle to the processor 205;
the position sensor 203 is located on the parking ratchet wheel of the parking actuator 201, and is used for acquiring the position of the ratchet wheel on the parking actuator 201 relative to the pawl and sending the acquired position information to the processor 205 in cooperation with the angle sensor 202, wherein the position information is used for indicating the position of a gear or a groove on the ratchet wheel relative to the pawl on the parking actuator 201;
the spring torsion sensor 204 is configured to cooperate with the angle sensor 202 to acquire a torque of a parking return spring of the parking actuator 201 and send the torque to the processor 205;
the processor 205, located on the parking executing structure, is configured to determine whether to execute the parking simulation or release the parking simulation according to the assembly angle, the position information, and the torque, and generate a simulation instruction to the computer 206 according to the determination result; the simulation instruction comprises instruction information for executing parking simulation or releasing parking simulation, and an assembly angle, position information and moment corresponding to the executed simulation;
the computer 206 is configured to initialize a pre-established parking actuator 201 simulation model according to the assembly angle, the position information, and the torque in the simulation instruction sent by the processor 205, and then perform a corresponding simulation experiment according to the instruction information to obtain the performance parameters of the parking actuator 201.
The performance parameter includes at least one of the following information:
when parking, the ratchet wheel positions at different assembly angles, the parking response time at the assembly angle capable of completing parking, the torque at the assembly angle capable of completing parking and the like;
when the parking is released, the parking releasing response time under different assembly angles, the ratchet positions under different assembly angles, the torque of the parking return spring before and after the parking is released and the like.
The parking state curves, i.e., the curves of the total angle and the ratchet position when parking and releasing, can be plotted according to the ratchet position at different assembly angles, so as to determine whether the pawl rotates by a corresponding angle.
Based on the same inventive concept, the embodiment of the application further provides a detection method of the parking actuating mechanism of the pure electric vehicle. As shown in fig. 4, the method includes:
step 401: and acquiring the assembly angle of the parking gear shifting shaft of the parking actuating mechanism through an angle sensor.
Step 402: and acquiring the position information of a ratchet wheel on the parking actuating mechanism relative to a pawl through a position sensor, wherein the position information is used for indicating the position of a gear or a groove on the ratchet wheel relative to the pawl on the parking actuating mechanism.
Step 403: and acquiring the torque of a parking return spring of the parking actuating mechanism through a spring torsion sensor.
Step 404: and determining whether to execute parking simulation or release parking simulation according to the assembly angle, the position information and the torque, generating a simulation instruction to the computer according to a determined result, so that a pre-established parking execution mechanism simulation model is initialized according to the assembly angle, the position information and the torque in the simulation instruction sent by the processor by the computer, and then carrying out corresponding simulation experiment according to the instruction information to obtain the performance parameters of the parking execution mechanism.
In the specific implementation, the positions of the sensors are described in the foregoing, and are not described in detail here.
In specific implementation, in order to determine which simulation is to be executed, the parking simulation is determined to be executed according to the assembly angle, the position information and the moment, and the method can be implemented as the following steps:
step A1: and determining whether the assembly angle acquired by the angle sensor is larger than a preset angle.
In specific implementation, the preset angle may be determined according to an empirical value or according to the design requirement of the parking actuator.
Step A2: if the angle is larger than the preset angle, determining whether the position information indicates that the pawl of the parking actuating mechanism is clamped in the groove of the ratchet wheel; and if the parking return spring is clamped in the groove and the torque of the parking return spring is determined to be larger than the preset torque, the parking simulation is determined to be executed.
The corresponding determination to execute the parking release simulation may include the following steps:
step B1: if the assembly angle is not larger than the preset angle, determining whether the torque is reduced or not according to the collected torque of the parking return spring;
step B2: if the torque is reduced, determining to execute the parking releasing simulation;
step B3: and if the torque is not reduced, returning to execute the step of determining whether the assembly angle acquired by the angle sensor is larger than the preset angle.
For ease of system understanding, how to determine whether to perform or release the parking simulation is explained herein in conjunction with the flowchart shown in fig. 5. The method comprises the following steps:
step 501: and acquiring an assembly angle acquired by the angle sensor.
Step 502: and determining whether the assembly is larger than a preset angle, if so, executing step 503, and if not, executing step 501.
Step 503: and (4) acquiring the assembly angle acquired by the angle sensor after delaying the designated time length, determining whether the assembly angle is larger than a preset angle, if so, executing step 504, and if not, executing step 507.
Here, through the steps 502 and 503, the accuracy of determining whether the angle is larger than the preset angle is improved by two determinations. The method can be summarized as delaying the acquisition of the assembly angle again for a specified time after determining that the assembly angle acquired for the first time in the current judgment period is greater than a preset angle; and if the assembly angle acquired again is larger than the preset angle, determining that the assembly angle acquired by the angle sensor is larger than the preset angle, otherwise, determining that the assembly angle acquired by the angle sensor is not larger than the preset angle.
Step 504: and determining whether the position information indicates that the pawl of the parking actuating mechanism is clamped in the groove of the ratchet wheel, if so, executing step 505, otherwise, returning to execute step 501.
Step 505: and determining that the torque of the parking return spring is larger than the preset torque, if so, executing step 505, otherwise, returning to execute step 501.
Step 506: and determining to execute the parking simulation.
Step 507: and acquiring the torque acquired within a certain time interval.
Step 508: and judging whether the acquired torque is smaller than the acquired torque before, if so, executing a step 509, otherwise, executing a step 501.
Step 509: and determining to execute the parking release simulation.
In specific implementation, the last collected assembly angle may be used as the preset angle in step 503. That is, it is possible to preliminarily determine whether to release parking or to perform parking first depending on whether the assembly angle becomes small, which determines that parking release is possible, and becomes large, which performs parking. When it becomes large, it can be further verified whether parking is performed or not based on the ratchet position and the torque. When the torque becomes smaller, whether the parking is released is further verified according to the change of the torque.
In the embodiment of the application, the parking actuating mechanism can be detected in a simulation mode by adopting a small number of sensors and a computer simulation model. And further, the detection of the parking actuating mechanism is simple and easy to implement, so that the detection efficiency is improved. The influence of other parts in the vehicle during real vehicle detection is omitted, so that the detection accuracy can be improved.
Based on the same inventive concept, the embodiment of the present application further provides a detection device for a parking actuator of a pure electric vehicle, as shown in fig. 6, the device includes:
the assembly angle acquisition module 601 is used for acquiring an assembly angle of a parking shift shaft of the parking actuating mechanism through an angle sensor;
a position information acquiring module 602, configured to acquire, by using a position sensor, position information of a ratchet on the parking actuator relative to a pawl, where the position information is used to indicate a position of a gear or a groove on the ratchet relative to the pawl on the parking actuator;
the torque acquisition module 603 is configured to acquire a torque of a parking return spring of the parking actuator through a spring torsion sensor;
and the determining module 604 is configured to determine whether to execute the parking simulation or release the parking simulation according to the assembly angle, the position information, and the torque, and generate a simulation instruction according to the determination result, so that a pre-established parking actuator simulation model is initialized according to the assembly angle, the position information, and the torque in the simulation instruction sent by the processor by the computer, and then a corresponding simulation experiment is performed according to the instruction information to obtain the performance parameters of the parking actuator.
Further, the determining module specifically includes:
the angle judging unit is used for determining whether the assembly angle acquired by the angle sensor is larger than a preset angle or not;
the parking simulation determining unit is used for determining whether the position information indicates that a pawl of the parking executing mechanism is clamped in a groove of the ratchet wheel or not if the position information is larger than a preset angle; and if the parking return spring is clamped in the groove and the torque of the parking return spring is determined to be larger than the preset torque, the parking simulation is determined to be executed.
Further, the determining module specifically includes:
the torque processing unit is used for determining whether the torque is reduced or not according to the collected torque of the parking return spring if the assembly angle is not larger than a preset angle;
the parking release simulation determining unit is used for determining to execute parking release simulation if the moment is reduced;
and the returning unit is used for triggering the angle judging unit to return to execute and determine whether the assembly angle acquired by the angle sensor is larger than the preset angle or not if the torque is not reduced.
Further, the angle determining unit specifically includes:
the first subunit is used for delaying the specified duration to acquire the assembly angle again after determining that the assembly angle acquired for the first time in the current judgment period is larger than the preset angle;
and the second subunit is used for determining that the assembly angle acquired by the angle sensor is greater than the preset angle if the assembly angle acquired again is greater than the preset angle, and otherwise determining that the assembly angle acquired by the angle sensor is not greater than the preset angle.
After the method, the system and the device for detecting the parking actuator of the pure electric vehicle according to the exemplary embodiment of the present application are introduced, a computing device according to another exemplary embodiment of the present application is introduced next.
As will be appreciated by one skilled in the art, aspects of the present application may be embodied as a system, method or program product. Accordingly, various aspects of the present application may be embodied in the form of: an entirely hardware embodiment, an entirely software embodiment (including firmware, microcode, etc.) or an embodiment combining hardware and software aspects that may all generally be referred to herein as a "circuit," module "or" system.
In some possible implementations, a computing device according to the present application may include at least one processor, and at least one memory. The storage device stores program codes, and when the program codes are executed by the processor, the processor executes the steps of the method for detecting the parking actuator of the pure electric vehicle according to various exemplary embodiments of the present application described above in the specification. For example, the processor may perform steps 401 and 404 as shown in FIG. 4.
The computing device 130 according to this embodiment of the present application is described below with reference to fig. 7. The computing device 130 shown in fig. 7 is only an example and should not bring any limitation to the function and scope of use of the embodiments of the present application.
As shown in FIG. 7, computing device 130 is embodied in the form of a general purpose computing device. Components of computing device 130 may include, but are not limited to: the at least one processor 131, the at least one memory 132, and a bus 133 that connects the various system components (including the memory 132 and the processor 131).
The memory 132 may include readable media in the form of volatile memory, such as Random Access Memory (RAM)1321 and/or cache memory 1322, and may further include Read Only Memory (ROM) 1323.
In some possible embodiments, the various aspects of the detection method for a parking actuator of an electric vehicle provided by the present application may also be implemented in the form of a program product including program code for causing a computer device to perform the steps of the detection method for a parking actuator of an electric vehicle according to various exemplary embodiments of the present application described above in this specification when the program product is run on the computer device, for example, the computer device may perform the steps 401 and 404 shown in fig. 4.
The program product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium include: an electrical connection having one or more wires, a portable disk, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
The program product for detecting the parking actuator of the pure electric vehicle according to the embodiment of the present application may employ a portable compact disc read only memory (CD-ROM) and include program codes, and may be run on a computing device. However, the program product of the present application is not limited thereto, and in this document, a readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
A readable signal medium may include a propagated data signal with readable program code embodied therein, for example, in baseband or as part of a carrier wave. Such a propagated data signal may take any of a variety of forms, including, but not limited to, electro-magnetic, optical, or any suitable combination thereof. A readable signal medium may also be any readable medium that is not a readable storage medium and that can communicate, propagate, or transport a program for use by or in connection with an instruction execution system, apparatus, or device.
Program code embodied on a readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.
Program code for carrying out operations of the present application may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user computing device, partly on the user equipment, as a stand-alone software package, partly on the user computing device and partly on a remote computing device, or entirely on the remote computing device or server. In the case of remote computing devices, the remote computing device may be connected to the user computing device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computing device (e.g., through the internet using an internet service provider).
It should be noted that although several units or sub-units of the apparatus are mentioned in the above detailed description, such division is merely exemplary and not mandatory. Indeed, the features and functions of two or more units described above may be embodied in one unit, according to embodiments of the application. Conversely, the features and functions of one unit described above may be further divided into embodiments by a plurality of units.
Further, while the operations of the methods of the present application are depicted in the drawings in a particular order, this does not require or imply that these operations must be performed in this particular order, or that all of the illustrated operations must be performed, to achieve desirable results. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step execution, and/or one step broken down into multiple step executions.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (16)
1. The utility model provides a pure electric vehicles's parking actuating mechanism detection device which characterized in that, includes parking actuating mechanism, angle sensor, position sensor, spring torsion sensor, treater, wherein:
the angle sensor is arranged on a parking gear shifting shaft of the parking actuating mechanism and used for collecting the assembly angle of the parking gear shifting shaft and sending the assembly angle to the processor;
the position sensor is positioned on a parking ratchet wheel of the parking actuating mechanism and is used for being matched with the angle sensor to acquire the position of the ratchet wheel on the parking actuating mechanism relative to a pawl and sending acquired position information to the processor, and the position information is used for indicating the position of a gear or a groove on the ratchet wheel relative to the pawl on the parking actuating mechanism;
the spring torsion sensor is used for being matched with the angle sensor to acquire the torque of a parking return spring of the parking actuating mechanism and sending the torque to the processor;
the processor is positioned on the parking executing structure and used for determining whether parking simulation is executed or released according to the assembly angle, the position information and the moment, generating a simulation instruction according to a determined result and sending the simulation instruction to the computer so that the computer initializes a pre-established parking executing mechanism simulation model according to the assembly angle, the position information and the moment in the simulation instruction sent by the processor and then carries out corresponding simulation experiment according to the instruction information to obtain performance parameters of the parking executing mechanism; the simulation instruction comprises instruction information for executing parking simulation or releasing parking simulation, and an assembly angle, position information and moment corresponding to the executed simulation.
2. The apparatus of claim 1, wherein the position sensor is an electro-optical position sensor having a light emitting diode aligned with the outer edge of the ratchet and pawl mating recess and a centerline in the ratchet rotation plane and perpendicular to the ratchet rotation center.
3. The apparatus of claim 1, wherein the processor determines to execute the parking simulation based on the assembly angle, the position information, and the torque, specifically comprising:
determining whether an assembly angle acquired by an angle sensor is larger than a preset angle;
if the angle is larger than the preset angle, determining whether the position information indicates that the pawl of the parking actuating mechanism is clamped in the groove of the ratchet wheel; and if the parking return spring is clamped in the groove and the torque of the parking return spring is determined to be larger than the preset torque, the parking simulation is determined to be executed.
4. The apparatus of claim 3, wherein the processor determines to execute the park release simulation based on the assembly angle, the position information, and the torque, and specifically comprises:
if the assembly angle is not larger than the preset angle, determining whether the torque is reduced or not according to the collected torque of the parking return spring;
if the torque is reduced, determining to execute the parking releasing simulation;
and the processor is also used for returning to execute the step of determining whether the assembly angle acquired by the angle sensor is larger than the preset angle or not if the moment is not reduced.
5. The utility model provides a pure electric vehicles's parking actuating mechanism's detecting system which characterized in that, the system includes parking actuating mechanism, angle sensor, position sensor, spring torsion sensor, treater and computer, wherein:
the angle sensor is arranged on a parking gear shifting shaft of the parking actuating mechanism and used for collecting the assembly angle of the parking gear shifting shaft and sending the assembly angle to the processor;
the position sensor is positioned on a parking ratchet wheel of the parking actuating mechanism and is used for being matched with the angle sensor to acquire the position of the ratchet wheel on the parking actuating mechanism relative to a pawl and sending acquired position information to the processor, and the position information is used for indicating the position of a gear or a groove on the ratchet wheel relative to the pawl on the parking actuating mechanism;
the spring torsion sensor is used for being matched with the angle sensor to acquire the torque of a parking return spring of the parking actuating mechanism and sending the torque to the processor;
the processor is positioned on the parking execution structure and used for determining whether to execute parking simulation or release parking simulation according to the assembly angle, the position information and the moment, and generating a simulation instruction to the computer according to a determined result; the simulation instruction comprises instruction information for executing parking simulation or releasing parking simulation, and an assembly angle, position information and moment corresponding to the executed simulation;
and the computer is used for initializing a pre-established parking executing mechanism simulation model according to the assembly angle, the position information and the moment in the simulation instruction sent by the processor, and then carrying out corresponding simulation experiments according to the instruction information to obtain the performance parameters of the parking executing mechanism.
6. The system of claim 5, wherein the performance parameters include at least one of the following information:
when parking, the ratchet wheel positions under different assembly angles, the parking response time under the assembly angle capable of completing parking, and the torque under the assembly angle capable of completing parking;
when parking is relieved, the parking relieving response time at different assembly angles, the ratchet wheel positions at different assembly angles and the torque of the parking return spring before and after parking are relieved.
7. The method for detecting the parking actuating mechanism of the pure electric vehicle is characterized by comprising the following steps:
acquiring an assembly angle of a parking gear shifting shaft of the parking actuating mechanism through an angle sensor;
acquiring position information of a ratchet wheel on the parking actuating mechanism relative to a pawl through a position sensor, wherein the position information is used for indicating the position of a gear or a groove on the ratchet wheel relative to the pawl on the parking actuating mechanism;
acquiring the torque of a parking return spring of the parking actuating mechanism through a spring torsion sensor;
and determining whether to execute parking simulation or release parking simulation according to the assembly angle, the position information and the torque, generating a simulation instruction according to a determined result, sending the simulation instruction to a computer, initializing a pre-established parking execution mechanism simulation model according to the assembly angle, the position information and the torque in the simulation instruction sent by the processor by the computer, and then carrying out corresponding simulation experiment according to the instruction information to obtain the performance parameters of the parking execution mechanism.
8. The method of claim 7, wherein determining to execute the parking simulation based on the assembly angle, the position information, and the torque comprises:
determining whether an assembly angle acquired by an angle sensor is larger than a preset angle;
if the angle is larger than the preset angle, determining whether the position information indicates that the pawl of the parking actuating mechanism is clamped in the groove of the ratchet wheel; and if the parking return spring is clamped in the groove and the torque of the parking return spring is determined to be larger than the preset torque, the parking simulation is determined to be executed.
9. The method of claim 8, wherein determining to execute the park release simulation based on the assembly angle, the position information, and the torque comprises:
if the assembly angle is not larger than the preset angle, determining whether the torque is reduced or not according to the collected torque of the parking return spring;
if the torque is reduced, determining to execute the parking releasing simulation;
and if the torque is not reduced, returning to execute the step of determining whether the assembly angle acquired by the angle sensor is larger than the preset angle.
10. The method according to claim 8, wherein the determining whether the total angle collected by the angle sensor is greater than a predetermined angle comprises:
after the assembly angle acquired for the first time in the current judgment period is determined to be larger than the preset angle, delaying the designated time length to acquire the assembly angle again;
and if the assembly angle acquired again is larger than the preset angle, determining that the assembly angle acquired by the angle sensor is larger than the preset angle, otherwise, determining that the assembly angle acquired by the angle sensor is not larger than the preset angle.
11. The utility model provides a pure electric vehicles's parking actuating mechanism's detection device which characterized in that, the device includes:
the assembly angle acquisition module is used for acquiring the assembly angle of a parking gear shifting shaft of the parking actuating mechanism through an angle sensor;
the position information acquisition module is used for acquiring the position information of a ratchet wheel on the parking actuating mechanism relative to a pawl through a position sensor, and the position information is used for indicating the position of a gear or a groove on the ratchet wheel relative to the pawl on the parking actuating mechanism;
the torque acquisition module is used for acquiring the torque of a parking return spring of the parking actuating mechanism through a spring torsion sensor;
and the determining module is used for determining whether to execute parking simulation or release parking simulation according to the assembly angle, the position information and the moment, generating a simulation instruction according to a determined result and sending the simulation instruction to the computer, so that a pre-established parking execution mechanism simulation model is initialized according to the assembly angle, the position information and the moment in the simulation instruction sent by the processor by the computer, and then corresponding simulation experiments are carried out according to the instruction information to obtain the performance parameters of the parking execution mechanism.
12. The apparatus of claim 11, wherein the determining module specifically comprises:
the angle judging unit is used for determining whether the assembly angle acquired by the angle sensor is larger than a preset angle or not;
the parking simulation determining unit is used for determining whether the position information indicates that a pawl of the parking executing mechanism is clamped in a groove of the ratchet wheel or not if the position information is larger than a preset angle; and if the parking return spring is clamped in the groove and the torque of the parking return spring is determined to be larger than the preset torque, the parking simulation is determined to be executed.
13. The apparatus according to claim 12, wherein the determining module specifically includes:
the torque processing unit is used for determining whether the torque is reduced or not according to the collected torque of the parking return spring if the assembly angle is not larger than a preset angle;
the parking release simulation determining unit is used for determining to execute parking release simulation if the moment is reduced;
and the returning unit is used for triggering the angle judging unit to return to execute and determine whether the assembly angle acquired by the angle sensor is larger than the preset angle or not if the torque is not reduced.
14. The apparatus according to claim 11, wherein the angle determining unit specifically includes:
the first subunit is used for delaying the specified duration to acquire the assembly angle again after determining that the assembly angle acquired for the first time in the current judgment period is larger than the preset angle;
and the second subunit is used for determining that the assembly angle acquired by the angle sensor is greater than the preset angle if the assembly angle acquired again is greater than the preset angle, and otherwise determining that the assembly angle acquired by the angle sensor is not greater than the preset angle.
15. A computer-readable medium having stored thereon computer-executable instructions for performing the method of any one of claims 7-10.
16. A computing device, comprising: at least one processor; and a memory communicatively coupled to the at least one processor; wherein the memory stores instructions executable by the at least one processor to enable the at least one processor to perform the method of any one of claims 7-10.
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| CN113200030B (en) * | 2021-06-11 | 2022-09-23 | 精诚工科汽车系统有限公司 | Vehicle, parking control method and device thereof, and storage medium |
| CN113624434B (en) * | 2021-07-23 | 2023-12-19 | 东风汽车集团股份有限公司 | Test method and device for hybrid electric drive assembly |
| CN113759878B (en) * | 2021-09-26 | 2023-08-29 | 重庆美沣秦安汽车驱动系统有限公司 | Control system, method and terminal for joint action of P-gear actuator and motor |
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