148 results about "Maintaining vehicles" patented technology

The invention discloses a vehicle surrounding structure fault prediction maintenance method and system based on machine learning, and relates to the technical field of vehicle intelligent monitoring and prediction maintenance. Through fusion of vibration, strain and environment corrosion data and a finite element simulation stress map, an environment-load collaborative damage effect is quantified through a physical degradation model, and a multi-modal feature vector is generated. Constructing a dynamic graph topology network, adjusting edge weights in real time, and synchronously capturing spatio-temporal mechanics characteristics by using spatio-temporal graph convolution; and further identifying key risk nodes through a graph attention mechanism, simulating a damage propagation path in combination with a corrosion attenuation coefficient and a graph diffusion model, and generating a probabilistic fault thermodynamic diagram. The fault prediction precision of the vehicle surrounding structure is improved, an adversarial generative network is constructed to optimize the sample weight, and a quantile maintenance list is output in combination with a physical constraint loss function. Fault prediction and maintenance optimization of the vehicle surrounding structure can be effectively carried out, the service life of the structure is prolonged, and the maintenance cost is reduced.

The invention provides a road surface flatness repairing method based on a scheduling algorithm and related equipment, and relates to the field of road engineering. The method comprises the following steps: acquiring image data of a target road, dividing a road surface region and sub-road surface regions according to a preset region size, and coding the sub-road surface regions; and then obtaining point cloud data of the sub-pavement areas, dividing the point cloud data into horizontal and vertical column point clouds according to the width and length of the sub-pavement areas, and determining the pavement flatness according to the difference value of the key point coordinates of each column of point clouds. And determining the sub-pavement area with the flatness lower than the first threshold value or higher than the second threshold value as a to-be-repaired position, and determining a to-be-repaired category. And then candidate maintenance vehicles with the distances to the to-be-repaired position being within a set range and matched with the to-be-repaired position in category are determined, a target maintenance vehicle is determined from the candidate maintenance vehicles in combination with a departure time priority algorithm, and finally a maintenance task is sent to the target maintenance vehicle. Accurate detection and efficient repair of the pavement flatness are realized.

The invention relates to the technical field of vehicle stability control and fault-tolerant control, and discloses a steer-by-wire vehicle stability control method under actuator faults and input hysteresis, a terminal and a medium. The method comprises the following steps: establishing a kinetic model of a steer-by-wire vehicle, and constructing a front wheel subsystem kinetic model in a steer-by-wire system by comprehensively considering an actuator fault, input hysteresis and a state constraint condition; according to the steering angle instruction of the driver and the ideal vehicle model, the expected yaw velocity and the expected sideslip angle of the vehicle are obtained through calculation; designing an upper-layer stability controller of the front wheel subsystem; generating a desired front wheel steering angle for the front wheel subsystem; and a lower-layer steering angle tracking controller of the front wheel steering system is designed, the front wheel steering angle tracking performance of the steer-by-wire system under the working conditions of actuator faults and input hysteresis is ensured, and the actual front wheel steering angle of the vehicle approaches the expected front wheel steering angle. According to the invention, the steer-by-wire system can still maintain the stability of the vehicle under the conditions of actuator fault and input hysteresis.

The utility model discloses a vehicle operation and maintenance operation device and a track maintenance vehicle, and belongs to the technical field of vehicle operation and maintenance. The vehicle operation and maintenance operation device comprises a base, a supporting plate and a traction mechanism. The supporting plate is movably connected to the base, the traction mechanism is arranged on the base and connected with the supporting plate, and the traction mechanism is used for driving the supporting plate to move relative to the base so that the supporting plate can be switched between a first position and a second position; when the supporting plate is located at the first position, the supporting plate is located in the base, and when the supporting plate is located at the second position, at least part of the supporting plate is suitable for stretching into the bottom of a vehicle to be maintained so as to bear maintenance parts of the vehicle. Therefore, the telescopic supporting plate extends into the bottom of the vehicle to transfer and replace the maintenance parts, so that the investment of manpower and material resources is reduced, and the maintenance efficiency is improved; and meanwhile, the safety during maintenance is improved.

The invention discloses a bridge end fault processing method and device, equipment and a medium, and relates to the field of drive axles, and the method comprises the steps: obtaining fault levels corresponding to gearboxes and motors in all drive axles; judging whether a target fault level greater than or equal to a preset fault level exists in only one drive axle or not; if the two drive axles both have the target fault levels, the fault levels are uploaded to a whole vehicle fault processing module; if only one drive axle has the target fault level, judging whether a fault corresponding to the target fault level is a driving forbidding fault or not; if the fault corresponding to the target fault level is a driving forbidding fault, the fault level is uploaded to a whole vehicle fault processing module; and if the fault corresponding to the target fault level is not the driving forbidding fault, the fault level corresponding to the target fault is reduced by one level and then uploaded to a whole vehicle fault processing module, and the target drive axle with the target fault level is isolated. Therefore, the power of the vehicle can still be maintained when a single axle has a serious fault.

Methods and systems are provided for optimizing a performance of a vehicle while maintaining vehicle emissions below a threshold. In one example, a method for a controller of a vehicle comprises adjusting an operating parameter of the vehicle in response to a margin between a moving average tailpipe NOx emissions and a threshold tailpipe NOx emissions decreasing below a threshold NOx emissions margin, the moving average tailpipe NOx emissions calculated at regular intervals over a plurality of overlapping moving average windows (MAWs) of measured tailpipe NOx emissions. The threshold tailpipe NOx margin may be predicted based on expected engine-out NOx emissions of the vehicle, current NOx emissions sensitivities, and / or a predicted catalyst conversion efficiency in relation to the expected engine-out NOx emissions.

The invention relates to the technical field of vehicle stability, and discloses a tire burst vehicle stability control method, system and device, a vehicle, equipment and a medium. Firstly, under the condition that a vehicle tire burst signal is determined to be generated and a vehicle control parameter is determined to be greater than a threshold value, an ideal deceleration and an ideal steering wheel angle are determined based on the vehicle speed when the vehicle tire is burst. Then, on the basis of the ideal deceleration, the ideal steering wheel angle and the track of the vehicle, the execution steering wheel angle parameter and the braking force corresponding to each wheel of the vehicle are determined; and finally, performing combined control on each wheel of the vehicle based on the braking force distribution corresponding to each wheel of the vehicle, and controlling a steering wheel angle controller based on execution of the steering wheel angle parameter, so that the vehicle driving state meets the stable condition, the tire burst condition is effectively dealt with, the limitation of single control is avoided, various tire burst working conditions are adapted, and the safety of the vehicle is improved. And particularly, the vehicle is kept stable under complex road conditions. Graded braking is achieved based on the vehicle speed during tire burst of the vehicle.

A system includes a computing device comprising a processor and a memory. The processor is configured to receive: vehicle data associated with a vehicle associated with a user, where the vehicle data is indicative of characteristics of the vehicle, maintenance recommendation data indicative of vehicle maintenance recommendations for the vehicle, maintenance service data indicative of maintenance services performed on the vehicle, and activity data associated with operation of the vehicle. The processor may then identify a maintenance service to be performed on the vehicle based on the received data and send a notification to a user computing device with an indication of the maintenance service to be performed.

The invention discloses a vehicle diagnosis method and system, a vehicle, equipment and a medium. The vehicle diagnosis method comprises the steps that a central control screen of a vehicle receives a factory maintenance mode option triggered by a user to control the vehicle to enter a factory maintenance mode; in the factory maintenance mode, the central control screen receives a diagnosis request of a controller of a vehicle; sending the diagnosis request to the controller directly or through a gateway, so that the controller responds to the diagnosis request; and the central control screen receives the diagnosis response result of the controller and displays the diagnosis response result of the controller in the central control screen. With the adoption of the method, an after-sale diagnostic instrument and a production line diagnostic instrument are not needed any more, so that the cost of additionally configuring the diagnostic instrument is reduced, meanwhile, the after-sale working process is simplified, after an after-sale worker directly goes to the site, the fault of the whole vehicle can be checked through a central control screen of the vehicle, the maintenance effect is facilitated, and the maintenance experience of vehicle maintenance is improved.

A method of facilitating access to one or more vehicle service programs, such as diagnostic software applications, for servicing an electronic system of a vehicle with a vehicle diagnostic computer tool that is configured to interface with the electronic system of a vehicle at a repair facility includes storing in computer memory a profile file for each of one or more users, where each profile file comprises credential data for a selected user for accessing one or more vehicle service programs, providing credential manager software configured to access user profile files to obtain credential data, using the credential manager software to selectively obtain credential data of a selected user for a selected vehicle service program, and supplying the credential data for the selected user with the credential manager software to the selected vehicle service program to access the selected vehicle service program for servicing the vehicle.

The application relates to the technical field of automobile detection equipment, and discloses a multi-angle probe height detection equipment for automobile sensors, which comprises a main control device, and winding discs movably connected to the two sides of the main control device. The winding discs and the first wires are arranged, which are beneficial to connecting the first wires between the height rods and the main control device when the height rods are used to detect and maintain the height of the automobile. The outer surface of the first wire is wound to the outer surface of the winding disc, so that the chassis height data detected by the height rod can be transmitted to the inside of the main control device through the first wire in real time, the staff can feed back the data, the chassis height of the vehicle to be maintained can be adjusted, the phenomenon that the staff repeatedly measures and takes data is reduced, two height rods are provided, the work efficiency is improved, and the time consumed by the staff for auxiliary measurement is saved. When the wheel hub is fixed by aligning the wheel hub with the cylinder of the triangular clamp, the first probe of the distance measuring sensor detects the center of the wheel hub to prevent the fixed position from deviating.

A service vehicle (50) for operating on a track system of a storage and retrieval grid, the service vehicle being configured for retrieving a remotely operated vehicle for service. The service vehicle comprises a first vehicle area (51) and a second vehicle area (52). Therein, the first vehicle area is configured as a vehicle fence for holding the remotely operated vehicle before the remotely operated vehicle enters the second vehicle area, and wherein the first vehicle area is connected with the second vehicle area for passage of the remotely operated vehicle via the vehicle fence.

The application discloses a positioning method, device and equipment of a repaired object and a computer readable storage medium, belongs to the field of image recognition, and is used for assisting positioning of a repaired object in a vehicle. A target object to be repaired and a plane coordinate detection value of the target object in a vehicle structure coordinate system can be determined according to multiple images of the repaired vehicle, then a first part set of a part to which the plane coordinate detection value belongs is found out, then the parts in the first part set are removed according to the factor of distance from the geometric center to obtain a second part set, finally, the identity information of a part corresponding to the target object is determined according to matching between image features of the target object and preset image features of the parts in the second part set, the target object can be positioned through the identity information, the method can accurately assist a worker in positioning the repaired object, the correct object can be ensured to be repaired, the maintenance efficiency is improved, and the safety hidden danger is eliminated.

The utility model discloses a multifunctional tunnel cleaning and maintaining vehicle which comprises a movable vehicle body, a generator, a lifting device, a water tank and a working platform. The generator, the lifting device, the water tank and the working platform are sequentially arranged behind a vehicle head of the movable vehicle body. An angle-adjustable fire-fighting pipe head and a detachable cleaning water gun are arranged on the working platform, and the fire-fighting pipe head is connected with the water tank through a pipeline; the water tank is further connected with a car washing machine which is connected with the cleaning water gun. The generator is electrically connected with the lifting device and the car washing machine. The generator, the lifting device, the car washer, the foam machine, the blower and other equipment are arranged on the movable car body, so that the functions of foam direct injection, water pressure adjustment, high-altitude lifting, electromechanical dust removal and the like are integrated on one movable car body; maintenance personnel can maintain or install other supporting facilities (such as lighting lamps and advertising boards) of a tunnel without replacing a vehicle, multi-person operation is achieved by means of the fire-fighting pipe head and the cleaning water gun, and the cleaning efficiency can be greatly improved in cooperation with foam sprayed out by the foam water gun.

The invention discloses a maintenance tool stool which comprises a first lying plate, a second lying plate and a third lying plate which are hinged in sequence, and the first lying plate, the second lying plate and the third lying plate can rotate to be in an initial posture for people to lie flat, a Z-shaped posture for people to sit and a folding posture for storage and carrying. According to the maintenance tool stool, a person can lie on the maintenance tool stool in the initial posture, the person can maintain the vehicle at the bottom of the vehicle conveniently, meanwhile, by arranging an elevation angle adjusting mechanism, when the person needs to raise the head to observe and maintain the vehicle, the inclination angle of a third lying plate can be adjusted, the head of the person is supported, and the comfort during maintenance is improved; when the personnel need to maintain the periphery of the vehicle, the personnel can sit on the third lying plate to maintain the vehicle by changing the first lying plate, the second lying plate and the third lying plate from the initial posture to the Z-shaped posture, and after maintenance is completed, the folding posture is changed, so that the personnel can conveniently store and carry the vehicle.

The invention discloses an automatic driving system fault processing method, apparatus and device, and a storage medium. The method comprises the steps of determining whether an automatic driving system has a fault based on communication state information; when the automatic driving system has a fault, triggering a safety mode of the automatic driving system, and after entering the safety mode, determining whether backup link sensing information exists or not; if the backup link sensing information exists, using the backup link sensing information and the historical sensing data to generate a vehicle control instruction, and obtaining current state information of the vehicle; and a vehicle control mode is determined according to the current state information, and in the process of executing the vehicle control instruction based on the vehicle control mode, if the driver takes over the vehicle, the safety mode is quitted. The safety mode is quickly triggered when the communication is abnormal, the vehicle control is maintained by using the backup link sensing information and the historical sensing data, and the safety mode is quitted when the driver takes over the vehicle, so that the robustness and the safety of the automatic driving system are effectively improved.

The invention relates to a method for stabilizing a motor vehicle during emergency braking. For this purpose, direction-alternating micro-steering impulses are automatically superimposed on the steering system during the braking process, which cause a lateral micro-migration of the tire-road contact surface. The micro-steering impulses have an amplitude below that of the steering angle change consciously perceived by the driver and are designed to relieve thermally overloaded contact segments and cyclically engage adjacent, adhesive contact areas. This stabilizes the usable coefficient of friction on the tire contact patch. The procedure helps, particularly in dangerous situations during emergency braking on straight stretches or in curves, to compensate for a decrease in lateral grip and to maintain vehicle stability and steerability.

Systems, methods, computer-readable media, and devices for accessing onboard operational data in a vehicle. The systems, methods, computer-readable media, and devices may include hardware and / or software for performing operations that include: obtaining user information and vehicle information, obtaining verification information, e.g., from a verification source, verifying that a specific user is associated with the vehicle based on the verification information, communicatively connecting to the vehicle based on the vehicle information; obtaining the onboard data from the vehicle; and providing the onboard data to the user. In embodiments, the user may be the owner of the vehicle, the registrant of the vehicle, or a repair person that is servicing the vehicle and needs access to onboard data besides OBD error codes.

The utility model relates to a device for preventing mistaken welding of automobile stud positions, which comprises a stud welding tool, a first automobile stud welding component and a second automobile stud welding component. And the shielding mechanism comprises a shielding driving part, a first shielding part and a second shielding part. When stud welding is carried out on a first vehicle model, the second shielding part is driven by the shielding driving part to shield the stud welding part of the second vehicle model, so that the second stud welding part cannot weld studs on a vehicle body of the first vehicle model; and when stud welding is carried out on the second vehicle type, the first shielding part is driven to shield the stud welding part of the first vehicle type, so that the first stud welding part cannot weld studs on the body of the second vehicle type. According to the stud welding tool, it can be effectively ensured that when the stud welding tool is used for welding the studs, wrong vehicle types cannot be welded, so that mistakes are accurately prevented, and the problems that follow-up maintenance is difficult and the quality of the maintained vehicle body is reduced due to the fact that the vehicle body studs are welded mistakenly in the final assembly process are further solved.

The utility model relates to the technical field of automobile maintenance equipment, and discloses a clamping and positioning mechanism for an automobile body, which comprises a base, the top of the base is provided with a fastening plate for fixing, the top of the fastening plate is fixedly provided with a guide pipe, the top of the fastening plate is fixedly provided with a sleeve, the top of the sleeve is connected with a limiting plate in a clamping manner, and the limiting plate is fixedly connected with the guide pipe. And a clamping plate for clamping is arranged at the top of the limiting plate. According to the clamping and positioning mechanism for the automobile body, through matched arrangement of a sleeve, a limiting plate and a clamping plate, the device can clamp a skirt edge at the bottom of the automobile body during use, so that a vehicle is kept stable during maintenance, front-back shaking of the vehicle is reduced, the height of the device can be adjusted through the sleeve according to the height of the skirt edge of the vehicle, and the device is convenient to use. And the limiting plates can guide the clamping plates, so that the clamping plates are adjusted in the preset direction, the clamping strength of the device is improved, and the device is prevented from sliding off due to too large stress during maintenance of the automobile.

1. Name of the product in this design: Shock absorber (CCD). 2. Purpose of this design: To absorb road impacts and vibrations in electric vehicles, motorcycles, and other vehicles, and to maintain vehicle stability. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D model 5. 5. The top view and bottom view are already shown in the 3D drawing, so the top view and bottom view are omitted.

This invention discloses a method, device, equipment, and medium for controlling motor torque zero crossing, belonging to the field of vehicle technology. The method includes: acquiring the accelerator pedal state of the vehicle, including a depressed state and a non-depressed state; if the accelerator pedal state changes from depressed to non-depressed, or from non-depressed to depressed, then acquiring the motor's output torque; if the output torque reaches a preset torque threshold, then adjusting the output torque to a preset tooth-aligning torque; if the output torque is maintained at the tooth-aligning torque for a preset first duration, then adjusting the output torque to a preset buffer torque; if the output torque is maintained at the buffer torque for a preset second duration, then acquiring the motor's requested torque and adjusting the output torque to the requested torque; wherein, the tooth-aligning torque is greater than the buffer torque. This method can reduce tooth knocking / jerkiness during motor torque zero crossing while maintaining vehicle smoothness and power responsiveness.

A tractor transmission (10) includes a range gearbox (12) having an input shaft (26) and an output shaft (28), the input shaft (26) being driven by a prime mover (18) through a main clutch (32). An auxiliary drive shaft (14) is driven by the prime mover independently of the input shaft. A torque fill drive system (16) is operable between the auxiliary drive shaft (14) and the output shaft (28) of the range gearbox. The system (16) includes a torque fill clutch (74) and is operable to transfer torque from the auxiliary drive shaft to the output shaft of the range gearbox when the torque fill clutch (74) is engaged. In use, when drive to the input shaft is interrupted to change gear, the torque fill clutch (74) is engaged to transfer drive from the auxiliary drive shaft to the output shaft and maintain vehicle momentum. The system can transfer torque to the output shaft (28) via an intermediate shaft (30) of the range gearbox or via a ground speed PTO drive.

The invention relates to the technical field of vehicle maintenance, in particular to a telescopic device. According to the telescopic device provided by the invention, according to the operation requirement of a maintenance vehicle, the driving mechanism can be used for lifting power, and the transmission mechanism is used for transmitting power, so that three working states that both sides in the length direction of the trench are shielded, only the first side is shielded and only the second side is shielded are achieved; the trouble of manually lifting and placing the cover plate in the prior art is avoided, multiple working modes can be provided according to actual conditions, and the maintenance operation requirements are met.

The utility model relates to the technical field of vehicle maintenance equipment, and discloses a multifunctional maintenance vehicle which comprises a vehicle body and a maintenance system, the vehicle body comprises a first vehicle frame and a second vehicle frame, the second vehicle frame is lower than the first vehicle frame in the height direction of the vehicle body, and the second vehicle frame is lower than the first vehicle frame in the length direction of the vehicle body. The first frame is divided into a first area close to the second frame and a second area far away from the second frame; the maintenance system comprises an oil storage tank, a power assembly and a filling assembly, the filling assembly is arranged on the second frame and used for filling the to-be-maintained vehicle with maintenance oil, the oil storage tank is arranged in the second area, communicated with the filling assembly and used for storing the maintenance oil, and the power assembly is arranged in the first area and used for providing power for the filling assembly. The multifunctional maintenance vehicle is high in integration level and space utilization rate, good in operation convenience and good in safety.

The invention discloses a vehicle roadway keeping method and device for an underground mining area and a computer storage medium, and belongs to the technical field of path planning. The method comprises the steps that a boundary point set in front of a vehicle is acquired; taking the boundary point set as a boundary, and performing forward superposition on the vehicles based on the rectangular search box to obtain a rectangular search box set; determining a connecting line formed by midpoints of first long sides of the rectangular search box set as a roadway maintaining path; by taking the boundary point set in front of the vehicle as a reference, the reachable position of the vehicle is limited; the advancing condition of the vehicle is simulated by constructing the rectangular search box, and the position where the vehicle can reach is simulated according to the scanning information data obtained in real time; the roadway maintaining path is determined by connecting the midpoints of the first long sides of the rectangular search box set, and the roadway maintaining path is directly determined according to the real-time scanning information data.