CN115144208A

CN115144208A - Steering gear detection method and device, electronic equipment and storage medium

Info

Publication number: CN115144208A
Application number: CN202210749279.8A
Authority: CN
Inventors: 侯慧贤; 常秀岩; 姜廷龙; 高尚
Original assignee: FAW Group Corp
Current assignee: FAW Group Corp
Priority date: 2022-06-28
Filing date: 2022-06-28
Publication date: 2022-10-04

Abstract

The invention discloses a steering gear detection method, a steering gear detection device, electronic equipment and a storage medium, wherein the method comprises the following steps: acquiring a parameter to be detected corresponding to the steering gear to be detected; determining a working condition to be used corresponding to the steering gear to be detected according to the working condition to be matched corresponding to the parameter to be detected; aiming at each working condition to be used, acquiring acceleration to be detected and decibel to be detected corresponding to the steering gear to be detected under the current working condition; and when the acceleration to be detected meets the acceleration detection condition and the decibel to be detected meets the decibel detection condition, determining that the target state of the steering gear to be detected is a normal state. The problem that the motor fault or the mechanical system fault of the steering gear cannot be determined when the steering gear is in fault is solved, and the effect of accurately determining the fault position when the steering gear is in fault is achieved based on the electromechanical separation detection mode.

Description

Steering gear detection method and device, electronic equipment and storage medium

Technical Field

The present invention relates to the field of fault detection technologies, and in particular, to a method and an apparatus for detecting a steering gear, an electronic device, and a storage medium.

Background

The automobile steering device is a core component of an automobile steering system, and when the automobile steering device has mechanical failure, potential safety hazards can be caused to a vehicle.

In order to improve the safety of the vehicle, the automobile steering device needs to be detected to determine whether the automobile steering device is in failure. At present, the detection mode of the automobile steering gear is generally a mode of adopting a steering gear assembly to detect, but when the automobile steering gear has torque fluctuation, the detection result may not be accurate enough.

In order to solve the above problems, an improvement in a detection method of a steering gear is required.

Disclosure of Invention

The invention provides a steering gear detection method, a steering gear detection device, electronic equipment and a storage medium, and aims to solve the problem that whether a motor fails or a mechanical system of a steering gear fails to be determined when the steering gear fails.

In a first aspect, an embodiment of the present invention provides a steering device detection method, including:

acquiring a parameter to be detected corresponding to the steering gear to be detected; the parameters to be detected comprise at least one of motor rotating speed parameters, transmission torque parameters and pull rod load parameters in the steering gear to be detected;

determining the working condition to be used corresponding to the steering gear to be detected according to the working condition to be matched corresponding to the parameter to be detected;

aiming at each working condition to be used, acquiring acceleration to be detected and decibel to be detected corresponding to the steering gear to be detected under the current working condition;

and when the acceleration to be detected meets the acceleration detection condition and the decibel to be detected meets the decibel detection condition, determining that the target state of the steering gear to be detected is a normal state.

In a second aspect, an embodiment of the present invention further provides a steering gear detecting apparatus, including:

the system comprises a to-be-detected parameter acquisition module, a to-be-detected parameter acquisition module and a to-be-detected parameter acquisition module, wherein the to-be-detected parameter acquisition module is used for acquiring a to-be-detected parameter corresponding to a to-be-detected steering gear;

the to-be-used working condition determining module is used for determining the to-be-used working condition corresponding to the to-be-detected steering gear according to the to-be-matched working condition corresponding to the to-be-detected parameter; the parameters to be detected comprise at least one of motor rotating speed parameters, transmission torque parameters and pull rod load parameters in the steering gear to be detected;

the information acquisition module is used for acquiring the acceleration to be detected and the decibel to be detected corresponding to the steering gear to be detected under the current working condition aiming at each working condition to be used;

and the target state determining module is used for determining that the target state of the steering gear to be detected is a normal state when the acceleration to be detected meets the acceleration detection condition and the decibel to be detected meets the decibel detection condition.

In a third aspect, an embodiment of the present invention further provides an electronic device, including:

at least one processor; and

a memory communicatively coupled to the at least one processor; wherein,

the memory stores a computer program executable by the at least one processor, the computer program being executable by the at least one processor to enable the at least one processor to perform a diverter detection method according to any of the embodiments of the present invention.

In a fourth aspect, the embodiment of the present invention further provides a computer-readable storage medium, where computer instructions are stored, and the computer instructions are configured to, when executed by a processor, implement the steering gear detection method according to any embodiment of the present invention.

According to the technical scheme, the to-be-detected parameters corresponding to the to-be-detected steering gear are obtained, when the to-be-detected steering gear is subjected to fault detection, the motor in the to-be-detected steering gear is replaced by the normal motor, and the to-be-detected parameters are input based on the to-be-edited control to simulate the normal work of the to-be-detected steering gear. And determining the working condition to be used corresponding to the steering gear to be detected according to the working condition to be matched corresponding to the parameter to be detected, and determining the working condition to be used corresponding to the steering gear to be detected according to the parameter interval corresponding to the parameter to be detected. The method comprises the steps of obtaining acceleration to be detected and decibel to be detected corresponding to the steering gear to be detected under the current working condition according to each working condition to be used, and obtaining the acceleration to be detected and the decibel to be detected corresponding to the steering gear to be detected through acceleration detection equipment and a decibel detector which are installed on the steering gear to be detected. And when the acceleration to be detected meets the acceleration detection condition and the decibel to be detected meets the decibel detection condition, determining that the target state of the steering gear to be detected is a normal state. The problem that the motor fault or the mechanical system fault of the steering gear cannot be determined when the steering gear is in fault is solved, and the effect of accurately determining the fault position when the steering gear is in fault is achieved based on the electromechanical separation detection mode.

It should be understood that the statements in this section do not necessarily identify key or critical features of the embodiments of the present invention, nor do they necessarily limit the scope of the invention. Other features of the invention will be apparent from the following the description becomes easier to understand.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a flowchart of a steering gear detecting method according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a fault detection system according to a second embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a jacking positioner device according to a second embodiment of the present invention;

FIG. 4 is a schematic structural diagram of a centering and clamping device according to a second embodiment of the present invention;

fig. 5 is a schematic structural view of an input shaft driving apparatus according to a second embodiment of the present invention;

fig. 6 is a schematic structural diagram of an analog motor device according to a second embodiment of the present invention;

fig. 7 is a schematic structural diagram of a load device according to a second embodiment of the present invention;

fig. 8 is a schematic structural diagram of a synchronous belt-type steering gear device according to a second embodiment of the present invention;

fig. 9 is a structural view of a synchronous belt-type steering gear according to a second embodiment of the present invention;

fig. 10 is a schematic structural view of a dual gear type steering gear according to a third embodiment of the present invention;

fig. 11 is a schematic structural diagram of a worm and gear of a double-gear steering gear according to a third embodiment of the invention.

Fig. 12 is a schematic structural diagram of a steering gear detecting device according to a fourth embodiment of the present invention;

fig. 13 is a schematic structural diagram of an electronic device that implements a diverter detection method according to an embodiment of the present invention;

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein.

Before the technical solution is elaborated in detail, an application scenario of the technical solution is briefly introduced to facilitate a clearer understanding of the technical solution. The steering gear in the vehicle can be used for transmitting the driving intention of a driver, increasing the force transmitted by a steering wheel to a steering transmission mechanism, changing the transmission direction of the force, and causing the safety hazard of the vehicle when the steering gear fails. In order to improve the safety of the steering gear, fault detection of the steering gear in the vehicle is generally required in the development stage of the vehicle to ensure that the steering gear can work normally. It should be noted that, besides the motor component, the steering gear also includes a mechanical system, and the mechanical system of the steering gear may include components such as a gear, a rack, and a tie rod, and when the conventional steering gear is detected, it is usually only able to detect whether the steering gear is faulty, but when the steering gear is faulty, it is not able to determine whether the motor or the mechanical system of the steering gear is faulty. Therefore, in order to clarify the fault position when the steering gear is in fault, the technical scheme carries out fault detection on the steering gear based on an electromechanical separation mode. Specifically, when fault detection is performed based on the technical scheme, a motor in the steering gear to be detected can be replaced by a motor capable of normally running based on the steering gear test bench, and on the basis, fault detection is performed on the steering gear to be detected so as to determine a fault position. Specifically, when the steering gear to be detected is replaced by a normal motor, the steering gear to be detected still can normally work, and the fault position of the steering gear to be detected is indicated as a mechanical system fault, otherwise, when the steering gear to be detected cannot normally work, the fault position of the steering gear to be detected is indicated as a motor fault.

Example one

Fig. 1 is a flowchart of a steering gear detection method according to an embodiment of the present invention, which is applicable to a situation where a steering gear in a vehicle is detected to be faulty, and the method may be implemented by a steering gear detection device, which may be implemented in hardware and/or software, and may be configured in a computing device that can implement the steering gear detection method.

It should be noted that the steering gear detection method in the present technical solution may be integrated in a fault detection system, and a normal motor in the fault detection system replaces a motor component in the steering gear to be detected, and corresponding parameters to be detected are input in the fault detection system, so as to control the steering gear to be detected to simulate a normal working state based on the fault detection system.

As shown in fig. 1, the method includes:

and S110, acquiring the to-be-detected parameters corresponding to the to-be-detected steering gear.

The steering gear to be detected can be understood as a steering gear which has a fault and needs fault detection, and can be a steering gear in a vehicle, such as a rack and pinion steering gear, a circulating ball type steering gear, a worm crank and finger type steering gear, a hydraulic integral power steering gear and the like. The parameter to be detected may be understood as being determinable by a user. The parameters to be detected comprise at least one of motor rotating speed parameters, transmission torque parameters and pull rod load parameters in the steering gear to be detected.

Specifically, when the steering gear to be detected is tested, the parameters to be detected corresponding to the steering gear to be detected are usually set to simulate the normal working state of the steering gear to be detected. Optionally, acquiring a to-be-detected parameter corresponding to the to-be-detected steering gear includes: and determining the parameters to be detected corresponding to the steering gear to be detected according to the detection requirement, and inputting the parameters to be detected in the control to be edited in the target display interface.

The target display interface can be understood as a display interface of a detection platform for detecting the controller to be detected. The target display interface comprises a plurality of controls to be edited, and corresponding parameters to be detected can be input based on the controls to be edited.

Specifically, before the controller to be detected is detected, the motor in the controller to be detected needs to be replaced by a motor capable of working normally, and then the function of detecting the controller to be detected is started based on the detection platform, that is, the motor in the steering gear to be detected in the technical scheme is a motor capable of working normally. At this time, the to-be-detected parameters corresponding to the to-be-edited controls can be input into the to-be-edited controls in the target display interface, so that the to-be-detected controller can be debugged based on the to-be-detected parameters, and the working state of the to-be-detected controller in normal working is modeled.

The advantage that sets up like this lies in, can reach the detection effect of electromechanical separation when treating to detect the steering gear, that is to say, will wait to detect the motor replacement in the steering gear for normal motor, if wait to detect the steering gear normal work, show that to detect the motor in the steering gear is the trouble part, on the contrary, if wait to detect the steering gear and can't normally work, show that to detect the mechanical system of steering gear is the trouble position. On the basis of this, it is possible to definitely determine whether the failure of the steering gear to be detected is a motor failure or a mechanical system failure.

And S120, determining the working condition to be used corresponding to the steering gear to be detected according to the working condition to be matched corresponding to the parameter to be detected.

The condition to be matched can be understood as a detection condition corresponding to different parameters to be detected, for example, when the motor speed of the parameters to be detected is set to 5000 revolutions per second, the condition to be matched is a high-speed condition, and when the motor speed of the parameters to be detected is set to 3000 revolutions per second, the condition to be matched is a low-speed condition. The to-be-used working condition can be understood as a detection working condition corresponding to the currently input to-be-detected parameter after the to-be-detected parameter is input.

Specifically, according to the working experience and the prior knowledge, the to-be-matched working conditions corresponding to the to-be-detected parameters can be preset, and after the to-be-detected parameters are input into the to-be-edited control, the corresponding to-be-matched working conditions are called as to-be-used working conditions corresponding to the to-be-detected steering gear based on the input to-be-detected parameters, so that the to-be-detected controller is detected based on the to-be-used working conditions.

Optionally, determining the to-be-used working condition corresponding to the to-be-detected steering gear according to the to-be-matched working condition corresponding to the to-be-detected parameter includes: determining a parameter interval to be determined corresponding to the parameter to be detected based on the target mapping table; and determining the working condition to be matched corresponding to the parameter interval to be determined as the working condition to be used corresponding to the steering gear to be detected.

The target mapping table may be understood as an information table for recording correspondence between each to-be-matched working condition and each parameter interval, and the target mapping table includes at least one parameter interval, at least one to-be-matched working condition, and correspondence between each parameter interval and each to-be-matched working condition.

Specifically, when the working condition to be used corresponding to the steering gear to be detected is determined, the working condition to be matched corresponding to the parameter to be detected can be determined. And inquiring a parameter interval corresponding to the currently input and output parameter to be detected based on the target mapping table, and taking the matched parameter interval as a parameter interval to be determined corresponding to the parameter to be detected. Further, according to the working condition to be matched corresponding to the parameter interval to be determined, the working condition to be used corresponding to the steering gear to be detected can be determined.

S130, acquiring the acceleration to be detected and the decibel to be detected corresponding to the steering gear to be detected under the current working condition aiming at each working condition to be used.

The current working condition can be understood as a working condition to be used corresponding to the parameter to be detected. When the steering gear to be detected works, certain vibration is generated, and the acceleration to be detected can be understood as the acceleration determined based on the change speed of the vibration of the steering gear to be detected. Meanwhile, certain sounds such as noise are accompanied in the working process of the to-be-detected steering gear, and the to-be-detected decibel can be understood as the intensity value of the sound generated when the to-be-detected steering gear works.

Generally speaking, if the steering gear to be detected has no fault, the generated sound intensity is low, or the sound intensity is in the first sound intensity interval, and when the decibel to be detected is too large, it can be determined that the steering gear to be detected has a fault.

Specifically, the current working condition corresponding to the parameter to be detected is called, the acceleration to be detected and the decibel to be detected corresponding to the steering gear to be detected under the current working condition are obtained, and whether the steering gear to be detected has a fault or not is determined based on the acceleration to be detected and the decibel to be detected.

It should be noted that, in order to ensure accurate fault detection of the to-be-detected steering gear, the to-be-detected steering gear needs to be judged together with the to-be-detected acceleration and the to-be-detected decibel.

Optionally, acquiring the acceleration to be detected and the decibel to be detected corresponding to the steering gear to be detected under the current working condition includes: acquiring an acceleration to be detected corresponding to the steering gear to be detected based on acceleration detection equipment installed on the steering gear to be detected; and acquiring the decibel to be detected corresponding to the redirector to be detected based on the decibel detector installed on the redirector to be detected.

The acceleration detection device can be understood as a device for acquiring the vibration acceleration of the steering gear to be detected, for example, the acceleration detection device can be an acceleration patch, and the acceleration patch is mounted at a position of the steering gear to be detected, where the acceleration detection is required, so that the corresponding acceleration to be detected can be acquired. A decibel detector is understood to mean an instrument for detecting the intensity of the sound generated by the steering gear to be detected during operation.

Specifically, the acceleration detection device and the decibel detector are respectively installed at corresponding positions of the to-be-detected steering gear, so that acceleration detection and decibel detection are performed on the to-be-detected steering gear, and the to-be-detected acceleration and the to-be-detected decibel corresponding to the to-be-detected steering gear are obtained.

S140, when the acceleration to be detected meets the acceleration detection condition and the decibel to be detected meets the decibel detection condition, determining that the target state of the steering gear to be detected is a normal state.

The acceleration detection condition may be understood as a detection condition for detecting whether the acceleration to be detected is normal, for example, a preset acceleration threshold, or an acceleration interval, etc. The decibel detection condition may be understood as a detection condition for detecting whether the decibel to be detected is qualified, for example, a preset decibel threshold or a decibel interval, etc.

Specifically, after the acceleration to be detected and the decibel to be detected are obtained, corresponding detection is respectively performed to determine whether the acceleration to be detected and the decibel to be detected are qualified or not. It can be understood that, when the acceleration to be detected satisfies the acceleration detection condition and the decibel to be detected satisfies the decibel detection condition, the operating state of the steering gear to be detected can be regarded as the normal operating state.

Optionally, when the acceleration to be detected meets the acceleration detection condition and the decibel to be detected meets the decibel detection condition, determining that the target state of the steering gear to be detected is a normal state, including: and if the acceleration to be detected is smaller than the acceleration threshold value and the decibel to be detected is smaller than the decibel threshold value, determining that the target state of the steering gear to be detected is a normal state.

The acceleration threshold value can be understood as the maximum value of the acceleration corresponding to the steering gear to be detected in normal operation, and the decibel threshold value can be understood as the maximum value of the sound intensity generated by the steering gear to be detected in normal operation.

Or, when the acceleration to be detected is detected, whether the acceleration to be detected is in the preset acceleration interval may be further determined, and if so, the acceleration to be detected may be determined to satisfy the corresponding acceleration detection condition. Correspondingly, when the decibel to be detected is detected, whether the decibel to be detected is in the preset decibel interval can be determined, and if yes, the decibel to be detected can be considered to meet corresponding decibel detection conditions. And when the acceleration to be detected meets the acceleration detection condition and the decibel to be detected meets the decibel detection condition, determining that the target state of the steering gear to be detected is a normal state.

Optionally, if the acceleration to be detected does not satisfy the acceleration detection condition, or the decibel to be detected does not satisfy the decibel detection condition, determining that the target state of the steering gear to be detected is a fault state.

Optionally, torque fluctuation information of the to-be-detected steering gear can be obtained according to the acceleration to be detected, and whether the working state of the to-be-detected steering gear is a normal state or not can be determined according to the torque fluctuation information. Specifically, torque fluctuation information of the steering gear to be detected is determined according to at least one acceleration to be detected within a preset time length; determining a fluctuation interval corresponding to the moment fluctuation information; and when the fluctuation interval is in the preset fluctuation interval, determining that the target state corresponding to the steering gear to be detected is a normal state.

The torque fluctuation information can be understood as torque fluctuation information of an input shaft of the steering gear to be detected, torque fluctuation information of a tie rod under a certain load, torque fluctuation information of a motor device and the like, and the torque fluctuation information can be obtained according to a torque sensor. The preset fluctuation interval can be understood as a preset torque variation interval, and the torque variation in the fluctuation interval can be regarded as normal torque fluctuation.

It should be noted that the acceleration to be detected may also reflect the torque fluctuation information to a certain extent, for example, when the acceleration to be detected increases, the torque of the steering gear to be detected increases correspondingly, that is, the fluctuation condition of the acceleration to be detected may reflect the torque fluctuation information to a certain extent, and when the fluctuation of the acceleration to be detected is large in a certain period of time, the torque fluctuation information is consistent with the fluctuation state of the acceleration to be detected.

According to the technical scheme, the to-be-detected parameters corresponding to the to-be-detected steering gear are obtained, when the to-be-detected steering gear is subjected to fault detection, the motor in the to-be-detected steering gear is replaced by the normal motor, and the to-be-detected parameters are input based on the to-be-edited control to simulate the normal work of the to-be-detected steering gear. And determining the working condition to be used corresponding to the steering gear to be detected according to the working condition to be matched corresponding to the parameter to be detected, and determining the working condition to be used corresponding to the steering gear to be detected according to the parameter interval corresponding to the parameter to be detected. The acceleration detection method comprises the steps of acquiring acceleration to be detected and decibel to be detected corresponding to the steering gear to be detected under the current working condition according to each working condition to be used, and acquiring the acceleration to be detected and the decibel to be detected corresponding to the steering gear to be detected through acceleration detection equipment and a decibel detector which are installed on the steering gear to be detected. And when the acceleration to be detected meets the acceleration detection condition and the decibel to be detected meets the decibel detection condition, determining that the target state of the steering gear to be detected is a normal state. The problem that the motor fault or the mechanical system fault of the steering gear cannot be determined when the steering gear is in fault is solved, and the effect of accurately determining the fault position when the steering gear is in fault is achieved based on the electromechanical separation detection mode.

Example two

On the basis of the above technical solution, in a specific example, in order to determine whether the portion of the to-be-detected steering gear where the fault occurs is the motor portion or the mechanical system portion of the steering gear, the to-be-detected steering gear may be detected by a fault detection system, and it should be noted that the steering gear detection method in the technical solution may be integrated in the fault detection system, so as to control the to-be-detected steering gear to simulate a normal working state based on the fault detection system. Specifically, the fault detection system is applied to a synchronous belt type steering gear (i.e., a steering gear to be detected), and as shown in fig. 2, the fault detection system is composed of a working table frame 1, a display and operation device 2, a jacking positioning device 3, a centering and clamping device 4, an input shaft driving device 5, a spline docking mechanism 6, a simulation motor device 7, two load devices 8, an electric control system, a software system, a safety protection system and the like.

As shown in fig. 3, the lower end 9 of the jacking positioning device in the fault detection system is connected with the work bench 1 through a sliding rail, so that the jacking positioning device can move transversely and can be locked at a required position. The middle end 10 of the jacking positioning device is connected with the lower end 11 of the jacking positioning device through a sliding rail, so that the jacking positioning device can longitudinally move and can be fixed and locked at a required position. The upper end 9 of the jacking positioning device and the middle end 10 of the jacking positioning device are telescopic and can be fixedly locked at a required position. The upper end 11 of each jacking positioning device is provided with a threaded hole 12, and two bolts 13 fixed through a steering gear respectively penetrate through

steering gear bushings

43 and 44 to be fixed with the threaded holes 12 of the lifting table. As shown in fig. 4, the lower end 16 of the centering and clamping device is connected to the work bench 1 by a slide rail, which ensures that it can be moved laterally and locked in place in the desired position. The centering and clamping device middle end 15 and the centering and clamping device lower end 16 are connected through a sliding rail, so that the centering and clamping device middle end and the centering and clamping device lower end can be longitudinally moved and can be fixedly locked at a required position. The upper centering-clamping device end 14 and the middle centering-clamping device end 15 are telescopic and can be locked fixedly at the required position. The upper end 14 of the centering and clamping device is provided with an upper concave clamp and a lower concave clamp, the inner wall of each concave clamp is of an arc-shaped structure, the lower arc-shaped clamp 18 is static, the upper arc-shaped clamp 17 can be unfolded, and the steering gear 33 can be assisted and fixed through control of an electric control system. As shown in fig. 5, the lower end 22 of the input shaft drive is connected to the work bench 1 by a slide rail, which ensures that it can be moved laterally and locked in place in the desired position. The middle end 21 of the input shaft driving device is connected with the lower end 22 of the input shaft driving device through a sliding rail, so that the input shaft driving device can longitudinally move and can be fixedly locked at a required position. The input shaft drive upper end 20 and the input shaft drive middle end 21 are telescopic and can be locked fixedly at a required position. The upper end 20 of the input shaft driving device is also provided with an input shaft driving motor 19 which is used for driving the input shaft of the steering gear to rotate so as to simulate the hand power. The input shaft driving device is provided with a torque sensor which can monitor the torque and torque fluctuation of the steering gear. The spline docking mechanism 6 is connected with an input shaft driving device motor 19 and a steering gear input shaft. The spline shaft and yoke can be replaced by a spline interface mechanism 6 to fit the splines of a different steering gear input shaft 35, see fig. 8. Further, as shown in fig. 6, the lower end 26 of the analog motor device is connected with the workbench 1 through a slide rail, so that the lower end can move transversely and can be locked fixedly at a required position. The middle end 25 of the simulation motor device is connected with the lower end 26 of the simulation motor device through a slide rail, so that the simulation motor device can longitudinally move and can be fixedly locked at a required position. The upper end 24 of the simulation motor device and the middle end 25 of the simulation motor device can stretch and retract and can be fixedly locked at a required position. The upper end 24 of the simulation motor device comprises a driving motor 23 and a driving motor output shaft 27, wherein the driving motor output shaft 27 can be disassembled and replaced with small belt wheels of different steering gears so as to be matched with a steering gear belt and drive the belt to roll. The simulation motor device 7 is also provided with a torque sensor for detecting the output force of the driving motor 7. Further, as shown in fig. 7, the lower end 30 of the load device is secured to the work bench 1 by a connection to it so that it can be moved laterally and locked in place in the desired position. The load device middle end 29 is connected with the load device lower end 30 through a slide rail, so that the load device middle end and the load device lower end can be longitudinally moved and can be fixedly locked at a required position. The upper load device end 28 and the middle load device end 29 are retractable and can be locked in a desired position. The two load devices are symmetrically arranged and are respectively provided with two torque sensors, the load devices 8 are respectively internally provided with a hydraulic mechanism, and the load working condition of the steering knuckle of the real vehicle is simulated through the hydraulic mechanisms. At the same time, the upper end 28 of the load device is equipped with a torque sensor for calculating the work output of the steering gear. The upper ends of the two load devices 8 are respectively provided with a bush 31 matched with the steering pull rod, and the bushes 31 can be replaced to adapt to different steering pull rods and are locked by nuts 32.

The assembly principle of the fault detection system is shown in fig. 8, a steering gear digital-analog input software system can identify steering gear parameters, and the jacking positioning device 3, the centering clamping device 4, the input shaft driving device 5, the simulation motor device 7 and the two load devices 8 are adjusted to required positions of the steering gear through an electric control system. Wherein the position of the simulation motor output shaft 27 and the small belt wheel 39 of the simulation motor device 7 is adjusted to be consistent with the position of the original steering gear. The steering gear reducing mechanism shell 42, the motor and the controller 38 are disassembled, and the steering gear fixing bolt 13 passes through the steering gear bush 43 and the steering gear bush 44 to be fixed in the screw hole 12 at the upper end of the jacking positioning device. The centering and clamping device 4 clamps the steering gear housing by the upper arc clamp 17 and the lower arc clamp 18, and performs auxiliary fixing on the steering gear 33. The load device upper end bushing 31 and the tie rod lock nut 32 fix the left and

right tie rods

36 and 37, respectively. The output shaft 27 of the simulation motor device 7 is reloaded with a small belt pulley 39 matched with the belt of the current steering gear, the belt 40 is matched with the small belt pulley 39, and the tension of the belt is adjusted to a preset value by adjusting the position of the simulation motor device 7. The spline docking mechanism 6 is replaced by the motor 19 at the upper end of the input shaft driving device, and the input shaft driving device is fixed with the steering gear input shaft 35.

Further, before the steering gear to be detected is detected, the motor in the steering gear to be detected is replaced by the motor which can normally work in the fault detection system, so that whether the part of the steering gear to be detected which has the fault is the motor part or the mechanical system part is determined according to whether the steering gear to be detected can normally work. Firstly, a software system based on a fault detection system inputs a corner and torque signal to an electronic control system, and inputs a parameter to be detected corresponding to a steering gear to be detected based on a display interface (namely, a target display interface) of the electronic control system so as to simulate the normal working state of the steering gear to be detected, for example, an input shaft driving device 5 and a simulation motor device 7 simulate the steering and manual working conditions of the steering gear of an actual vehicle, as shown in fig. 9, a simulation motor 23 drives an output shaft to rotate so as to drive a belt 40 to roll, the belt 40 drives a large belt wheel 45 to rotate, and after the speed reduction mechanism reduces the speed and increases the torque, the rack 41 is pushed to move along the axis, and the rack 41 moves to drive a steering pull rod 36 and a steering pull rod 37 to move so as to complete a steering instruction. The two load devices 8 simulate real vehicle knuckle loads. The failure detection system can calculate the mechanical efficiency of the steering gear through a torque sensor of the driving motor device 7 and torque sensors on the two load devices 8, and can also detect the positive no-load torque of the steering gear. The steering torque ripple (i.e., torque ripple information) may be monitored by a torque sensor on the steering input shaft drive 5. It should be noted that the moment fluctuation information may also be determined according to the acceleration to be detected corresponding to the steering gear to be detected, that is, to a certain extent, the fluctuation information of the acceleration to be detected may embody the moment fluctuation information, and when the fluctuation of the acceleration to be detected is in a preset fluctuation interval, the moment fluctuation information may be considered to satisfy the corresponding moment fluctuation interval. The advantage that sets up like this lies in, moment fluctuation information probably is not convenient for gather at some moment, and the acceleration of waiting to detect based on acceleration detection paster is gathered not only convenient, and comparatively accurate, more is favorable to confirming whether waiting to detect the steering gear can normally work. Meanwhile, when the steering gear to be detected works, corresponding decibels to be detected need to be collected, whether the decibels to be detected are smaller than a decibel threshold value or within a preset decibel interval is determined, if the acceleration to be detected and the decibels to be detected are normal parameter values, the working state of the steering gear to be detected can be determined to be a normal state, and based on the situation, the fault position of the steering gear to be detected can be determined to be a motor part. On the contrary, if the control to be detected cannot work normally, it indicates that the steering gear to be detected is still in a fault state after the motor of the steering gear to be detected is replaced by the normal motor, and the fault part of the steering gear to be detected can be determined to be the mechanical system part.

EXAMPLE III

In yet another specific example, the fault detection system may also be applied to a dual gear type steering gear (i.e., a to-be-detected steering gear). The structure of the fault detection system and the connection mode between the fault detection system and the steering gear to be detected are described in detail in the second embodiment, and are not described again.

In contrast to the second embodiment, when the fault detection system is applied to a dual gear steering gear, the spline interface mechanism 6 connects the input shaft drive motor 19 and the steering gear input shaft 50. The spline shaft and yoke can be replaced by a spline interface mechanism 6 to fit the splines of different steering gear input shafts 55. As shown in fig. 10, the lower end 26 of the analog motor device is connected to the working platform 1 by a slide rail, which ensures that it can move laterally and be locked in place at the desired position. The middle end 25 of the simulation motor device is connected with the lower end 26 of the simulation motor device through a slide rail, so that the simulation motor device can longitudinally move and can be fixedly locked at a required position. The upper end 24 of the simulation motor device and the middle end 25 of the simulation motor device can stretch and retract and can be fixedly locked at a required position. The upper end 24 of the simulation motor device comprises a driving motor 23 and a driving motor output shaft 27, wherein the driving motor output shaft 27 can be detached, and the worm 56 of different steering gears can be replaced to be matched with the worm wheel 55 of the steering gear. The simulation motor device 7 is also provided with a torque sensor for detecting the output torque of the driving motor 7. Furthermore, the lower end 30 of the load device is secured in a laterally displaceable manner and can be locked in a fixed manner in the desired position by connection to the work bench 1. The load device middle end 29 is connected with the load device lower end 30 through a slide rail, so that the load device middle end and the load device lower end can be longitudinally moved and can be fixedly locked at a required position. The upper load device end 28 and the middle load device end 29 are retractable and can be locked in a desired position. The two load devices 8 are symmetrically arranged and provided with two torque sensors, hydraulic mechanisms are respectively arranged in the load devices 8, and the load working condition of the steering knuckle of the real vehicle is simulated through the hydraulic mechanisms. While the upper end 28 of the load device is equipped with a torque sensor for calculating the work output of the steering gear. The upper ends of the two load devices 8 are respectively provided with a bush 31 matched with the steering pull rod, and the bush 31 can be replaced to be matched with different steering pull

rods

51 and 52 and is locked by a nut 32.

The assembly principle of the fault detection system is shown in fig. 10, a steering gear digital-analog input software system can identify steering gear parameters, and the jacking positioning device 3, the centering clamping device 4, the input shaft driving device 5, the simulation motor device 7 and the two load devices 8 are adjusted to required positions through an electric control system. Wherein the position of the analog motor output shaft worm 56 of the analog motor device 7 is adjusted to be consistent with the position of the original steering gear 46. The steering gear motor and the controller 38 are disassembled, and two steering gear fixing bolts 13 respectively penetrate through the steering gear bush 48 and the steering gear bush 49 to be fixed in the threaded holes 12 at the upper end of the jacking positioning device. The centering and clamping device 4 clamps the steering gear housing by the upper arc clamp 17 and the lower arc clamp 18, and performs auxiliary fixing on the steering gear 33. The load device upper end bushing 31 and the tie rod lock nut 32 respectively fix the left tie rod 48 and the right tie rod 49. The output shaft 27 of the simulation motor device 7 is matched with the worm 56 of the worm gear mechanism 53 of the current steering gear in a replacement mode, and the motor and the worm gear mechanism 53 are fixedly locked. The motor 19 at the upper end of the input shaft driving device is replaced with the spline docking mechanism 6 and is fixed with the steering gear input shaft 35.

Further, before the steering gear to be detected is detected, the motor in the steering gear to be detected is replaced by the motor which can normally work in the fault detection system, so that whether the part of the steering gear to be detected with the fault is the motor part or the mechanical system part is determined according to whether the steering gear to be detected can normally work or not. Firstly, a software system based on a fault detection system inputs a corner and torque signal to an electronic control system, and inputs a parameter to be detected corresponding to a steering gear to be detected based on a display interface (i.e. a target display interface) of the electronic control system so as to simulate the steering and manual working conditions of the steering gear to be detected, for example, an input shaft driving device 5 and a simulation motor device 7 simulate the steering and manual working conditions of the steering gear of an actual vehicle, as shown in fig. 11, a simulation motor 23 drives an output shaft 27 to rotate so as to drive a worm 56 to rotate, wherein a worm gear 53 increases the speed and torque so as to push a rack 57 to move along an axis, and the rack 57 moves to drive a steering pull rod 48 and a steering pull rod 49 to move so as to complete a steering command. The two load devices 8 simulate real vehicle knuckle loads. The failure detection system can calculate the mechanical efficiency of the steering gear through a torque sensor of the driving motor 7 and torque sensors on the two load devices 8, and can also detect the positive no-load torque of the steering gear. The steering torque ripple (i.e., torque ripple information) may be monitored by a torque sensor on the steering input shaft drive 5.

It should be noted that the torque fluctuation information may also be determined according to the acceleration to be detected corresponding to the steering gear to be detected, that is, to a certain extent, the fluctuation information of the acceleration to be detected may embody the torque fluctuation information, and when the fluctuation of the acceleration to be detected is in a preset fluctuation interval, it may be considered that the torque fluctuation information satisfies the corresponding torque fluctuation interval. The advantage that sets up like this lies in, moment fluctuation information may not be convenient for gather at some moment, and the acceleration of waiting to detect based on acceleration detection paster is not only convenient, and comparatively accurate, more is favorable to confirming whether waiting to detect the steering gear can normally work. Meanwhile, when the steering gear to be detected works, the corresponding decibel to be detected is required to be acquired, whether the decibel to be detected is smaller than a decibel threshold value or is within a preset decibel interval is determined, if the acceleration to be detected and the decibel to be detected are both normal parameter values, the working state of the steering gear to be detected can be determined to be a normal state, and based on the situation, the fault position of the steering gear to be detected can be determined to be a motor part. On the contrary, if the control to be detected cannot work normally, it indicates that the steering gear to be detected is still in a fault state after the motor of the steering gear to be detected is replaced by the normal motor, and the fault part of the steering gear to be detected can be determined to be the mechanical system part.

Example four

Fig. 12 is a schematic structural diagram of a steering gear detecting device according to a fourth embodiment of the present invention. As shown in fig. 12, the apparatus includes: the system comprises a parameter to be detected acquisition module 210, a working condition to be used determination module 220, an information acquisition module 230 and a target state determination module 240.

The to-be-detected parameter acquiring module 210 is configured to acquire a to-be-detected parameter corresponding to a to-be-detected steering gear; the parameters to be detected comprise at least one of motor rotating speed parameters, transmission torque parameters and pull rod load parameters in the steering gear to be detected;

the to-be-used working condition determining module 220 is used for determining the to-be-used working condition corresponding to the to-be-detected steering gear according to the to-be-matched working condition corresponding to the to-be-detected parameter;

the information obtaining module 230 is configured to obtain, for each to-be-used working condition, a to-be-detected acceleration and a to-be-detected decibel corresponding to the to-be-detected steering gear under the current working condition;

the target state determining module 240 is configured to determine that the target state of the to-be-detected steering device is a normal state when the acceleration to be detected meets the acceleration detection condition and the decibel to be detected meets the decibel detection condition.

Optionally, the to-be-detected parameter acquiring module is configured to determine, according to the detection requirement, a to-be-detected parameter corresponding to the to-be-detected steering gear, and input the to-be-detected parameter in a to-be-edited control in the target display interface.

Optionally, the to-be-used condition determining module includes: the parameter interval determining unit is used for determining a parameter interval to be determined corresponding to the parameter to be detected based on the target mapping table; the target mapping table comprises at least one parameter interval, at least one working condition to be matched and a corresponding relation between each parameter interval and each working condition to be matched;

and the to-be-used working condition determining unit is used for determining the to-be-matched working condition corresponding to the to-be-determined parameter interval as the to-be-used working condition corresponding to the to-be-detected steering gear.

Optionally, the information obtaining module includes: the acceleration acquisition unit is used for acquiring acceleration to be detected corresponding to the steering gear to be detected based on acceleration detection equipment installed on the steering gear to be detected;

and the decibel acquisition unit is used for acquiring the decibel to be detected corresponding to the redirector to be detected based on the decibel detector installed on the redirector to be detected.

Optionally, the target state determining module includes: and the target state determining unit is used for determining that the target state of the steering gear to be detected is a normal state if the acceleration to be detected is smaller than the acceleration threshold and the decibel to be detected is smaller than the decibel threshold.

Optionally, the target state determining unit further includes: the fluctuation information determining subunit is used for determining the moment fluctuation information of the steering gear to be detected according to at least one acceleration to be detected in a preset time length;

the fluctuation interval determining subunit is used for determining a fluctuation interval corresponding to the moment fluctuation information;

and the target state determining subunit is used for determining that the target state corresponding to the steering gear to be detected is a normal state when the fluctuation interval is in the preset fluctuation interval.

Optionally, the steering gear detection device is further configured to determine that the target state of the steering gear to be detected is a fault state if the acceleration to be detected does not satisfy the acceleration detection condition or the decibel to be detected does not satisfy the decibel detection condition.

The steering gear detection device provided by the embodiment of the invention can execute the steering gear detection method provided by any embodiment of the invention, and has corresponding functional modules and beneficial effects of the execution method.

EXAMPLE five

Fig. 13 shows a schematic structural diagram of the electronic device 10 of the embodiment of the present invention. Electronic devices are intended to represent various forms of digital computers, such as laptops, desktops, workstations, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. The electronic device may also represent various forms of mobile devices, such as personal digital assistants, cellular phones, smart phones, wearable devices (e.g., helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions, are meant to be exemplary only, and are not meant to limit implementations of the inventions described and/or claimed herein.

As shown in fig. 13, the electronic device 10 includes at least one processor 11, and a memory communicatively connected to the at least one processor 11, such as a Read Only Memory (ROM) 12, a Random Access Memory (RAM) 13, and the like, wherein the memory stores a computer program executable by the at least one processor, and the processor 11 may perform various appropriate actions and processes according to the computer program stored in the Read Only Memory (ROM) 12 or the computer program loaded from the storage unit 18 into the Random Access Memory (RAM) 13. In the RAM 13, various programs and data necessary for the operation of the electronic apparatus 10 can also be stored. The processor 11, the ROM 12, and the RAM 13 are connected to each other via a bus 14. An input/output (I/O) interface 15 is also connected to bus 14.

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

Processor 11 may be a variety of general and/or special purpose processing components having processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a Central Processing Unit (CPU), a Graphics Processing Unit (GPU), various specialized Artificial Intelligence (AI) computing chips, various processors running machine learning model algorithms, a Digital Signal Processor (DSP), and any suitable processor, controller, microcontroller, or the like. The processor 11 performs the various methods and processes described above, such as the diverter detection method.

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

Various implementations of the systems and techniques described here above may be implemented in digital electronic circuitry, integrated circuitry, field Programmable Gate Arrays (FPGAs), application Specific Integrated Circuits (ASICs), application Specific Standard Products (ASSPs), system on a chip (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and/or combinations thereof. These various embodiments may include: implemented in one or more computer programs that are executable and/or interpretable on a programmable system including at least one programmable processor, which may be special or general purpose, receiving data and instructions from, and transmitting data and instructions to, a storage system, at least one input device, and at least one output device.

Computer programs for implementing the methods of the present invention can be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the computer programs, when executed by the processor, cause the functions/acts specified in the flowchart and/or block diagram block or blocks to be performed. A computer program can execute entirely on a machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.

In the context of the present invention, a computer-readable storage medium may be a tangible medium that can contain, or store a computer program for use by or in connection with an instruction execution system, apparatus, or device. A computer readable storage medium may include, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. Alternatively, the computer readable storage medium may be a machine readable signal medium. More specific examples of a machine-readable storage medium would include an electrical connection based on one or more wires, a portable computer diskette, 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 compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

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

The systems and techniques described here can be implemented in a computing system that includes a back-end component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front-end component (e.g., a user computer having a graphical user interface or a web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such back-end, middleware, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: local Area Networks (LANs), wide Area Networks (WANs), blockchain networks, and the internet.

The computing system may include clients and servers. A client and server are generally remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. The server can be a cloud server, also called a cloud computing server or a cloud host, and is a host product in a cloud computing service system, so that the defects of high management difficulty and weak service expansibility in the traditional physical host and VPS service are overcome.

It should be understood that various forms of the flows shown above may be used, with steps reordered, added, or deleted. For example, the steps described in the present invention may be executed in parallel, sequentially, or in different orders, and are not limited herein as long as the desired results of the technical solution of the present invention can be achieved.

The above-described embodiments should not be construed as limiting the scope of the invention. It will be apparent to those skilled in the art that the design and operation of the present invention, depending on design requirements and other factors, various modifications, combinations, sub-combinations, and substitutions may be made. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A diverter detection method, comprising:

2. The method according to claim 1, wherein the obtaining the parameter to be detected corresponding to the steering gear to be detected comprises:

and determining a parameter to be detected corresponding to the steering gear to be detected according to a detection requirement, and inputting the parameter to be detected in a control to be edited in a target display interface.

3. The method according to claim 1, wherein the determining the working condition to be used corresponding to the steering gear to be detected according to the working condition to be matched corresponding to the parameter to be detected comprises:

determining a parameter interval to be determined corresponding to the parameter to be detected based on a target mapping table; the target mapping table comprises at least one parameter interval, at least one working condition to be matched and a corresponding relation between each parameter interval and each working condition to be matched;

and determining the working condition to be matched corresponding to the parameter interval to be determined as the working condition to be used corresponding to the steering gear to be detected.

4. The method according to claim 1, wherein the obtaining of the acceleration to be detected and the decibel to be detected corresponding to the steering gear to be detected under the current working condition comprises:

acquiring the acceleration to be detected corresponding to the steering gear to be detected based on acceleration detection equipment installed on the steering gear to be detected;

and acquiring the decibel to be detected corresponding to the redirector to be detected based on a decibel detector installed on the redirector to be detected.

5. The method according to claim 1, wherein the determining that the target state of the to-be-detected steering gear is a normal state when the to-be-detected acceleration satisfies an acceleration detection condition and the to-be-detected decibel satisfies a decibel detection condition comprises:

and if the acceleration to be detected is smaller than the acceleration threshold value and the decibel to be detected is smaller than the decibel threshold value, determining that the target state of the steering gear to be detected is a normal state.

6. The method of claim 5, further comprising:

determining moment fluctuation information of the to-be-detected steering gear according to at least one to-be-detected acceleration within a preset time length;

determining a fluctuation interval corresponding to the moment fluctuation information;

and when the fluctuation interval is in a preset fluctuation interval, determining that the target state corresponding to the to-be-detected steering gear is a normal state.

7. The method of claim 1, further comprising:

and if the acceleration to be detected does not meet the acceleration detection condition or the decibel to be detected does not meet the decibel detection condition, determining that the target state of the steering gear to be detected is a fault state.

8. A diverter detection device, comprising:

the device comprises a to-be-detected parameter acquisition module, a to-be-detected parameter acquisition module and a to-be-detected parameter acquisition module, wherein the to-be-detected parameter acquisition module is used for acquiring a to-be-detected parameter corresponding to a to-be-detected steering gear; the parameters to be detected comprise at least one of motor rotating speed parameters, transmission torque parameters and pull rod load parameters in the steering gear to be detected;

the to-be-used working condition determining module is used for determining the to-be-used working condition corresponding to the to-be-detected steering gear according to the to-be-matched working condition corresponding to the to-be-detected parameter;

9. An electronic device, characterized in that the electronic device comprises:

at least one processor; and

a memory communicatively coupled to the at least one processor; wherein,

the memory stores a computer program executable by the at least one processor, the computer program being executable by the at least one processor to enable the at least one processor to perform the diverter detection method of any one of claims 1-7.

10. A computer-readable storage medium storing computer instructions for causing a processor to perform the diverter detection method of any one of claims 1-7 when executed.