41results about How to "Improve driving performance" patented technology

The invention belongs to the technical field of automatic driving, and discloses an autonomous driving decision near-end strategy optimization method based on distributed exploration enhancement. According to the invention, a distributed architecture of the reinforcement learning decision module of the autonomous vehicle is designed, through parallelization and distributed processing, multiple agents can execute strategy training in different environments at the same time, and strategy updating and empirical data are shared in real time. In addition, the distributed architecture allows the method to operate in a larger-scale data set and a complex environment, and the adaptability and generalization ability of autonomous driving decision making are improved. In addition, a random network exploration (RND) module is also combined, the diversity and effectiveness of exploration are further enhanced, and a near-end strategy optimization algorithm used by the reinforcement learning decision module is perfected. By combining the distributed architecture and the RND module, the training process is remarkably accelerated, the exploration efficiency is improved, the decision-making quality of the automatic driving system is comprehensively improved, and the reliability and efficiency of automatic driving decision-making are improved.

The invention belongs to the technical field of suspension vibration reduction, and particularly relates to a suspension system design method which comprises the following steps: determining the load gravity center of a whole vehicle according to the overall arrangement requirement, preliminarily arranging an action system, and respectively arranging a wheel train and a suspension guide mechanism. In the aspect of wheel train arrangement, according to the principle that the load gravity center and the elastic center coincide as much as possible, the wheel train position is preliminarily arranged, random road excitation is generated, an equivalent linear dynamics model of a vehicle is established, and dynamics matching calculation is carried out. In the aspect of suspension guide mechanism arrangement, a hydro-pneumatic suspension mathematical model is generated, the determined suspension damping ratio is input into the hydro-pneumatic suspension mathematical model to guide damping valve design and generate nonlinear damping characteristics, and meanwhile, the calculated axle loads are input into the hydro-pneumatic suspension mathematical model to generate nonlinear damping characteristics. The method is used for generating and calculating non-linear elastic characteristics and comprehensively evaluating whether vehicle body vibration response characteristics, suspension heat balance temperature rise characteristic curves and key and heavy part reliability analysis results meet design index requirements or not.

The invention relates to a construction method and device of a vehicle air spring height adjustment gear matching model, computer equipment and a storage medium. The method comprises the following steps: acquiring vehicle driving states and vehicle driving pavement grades of a preset number of vehicles; dividing each vehicle driving state and the corresponding vehicle driving road surface grade to generate a training sample set, a verification sample and a test sample set; and generating a trained vehicle air spring height adjustment gear matching model, and outputting a to-be-selected vehicle air spring height standard adjustment gear based on the trained vehicle air spring height adjustment gear matching model. By adopting the method, the gear matching efficiency and the control accuracy can be improved.

The utility model discloses an all-terrain ground profiling geological exploration robot, and relates to the technical field of geological exploration equipment. The device comprises a first supporting plate, a second supporting plate, a storage battery, a controller, a camera and a driving module, wherein the storage battery and the controller are fixed on the upper surface of the first supporting plate side by side; the camera and the driving module are vertically arranged above the controller; the first supporting plate and the second supporting plate are connected through a bearing column. The two pairs of driving modules are fixed to the opposite side edges of the second supporting plate correspondingly. Wheels are vertically fixed at the output ends of the two pairs of driving modules; the two pairs of wheels are arranged on the two opposite sides of the second supporting plate correspondingly. Mud scraping sheets are arranged on the front sides and the rear sides of the two pairs of wheels; the four pairs of mud scraping sheets are connected through a power assembly; the power assembly is arranged on the second supporting plate. The geological exploration robot is reasonable in structural design and convenient to use, and the driving effect of the geological exploration robot is effectively improved.

The present invention discloses a method, system, electronic device and medium for desulfurization of LNT, belonging to the technical field of engine exhaust treatment. After detecting that the LNT system enters the desulfurization mode, the method uses real-time collected environmental information and vehicle operating condition information and other data to determine the final post-injection amount value, and sends instructions to inject fuel according to this value to prompt the LNT to perform reduction desulfurization. Compared with the prior art, the desulfurization method provided by the present invention adjusts the amount of fuel injected in the desulfurization mode by collecting real-time environmental data, thereby avoiding the engine being affected by the environment, incomplete desulfurization or excessive temperature during desulfurization, causing LNT system ablation and other problems. The present invention aims at the problem of the influence of environmental factors on LNT desulfurization, and performs more precise calibration of the amount of fuel injected in the desulfurization mode, which is conducive to further exploring the potential of the LNT catalyst and expanding the scope of use of the LNT catalyst system.

The utility model discloses a wet type back-to-back double clutch assembly which comprises a power input shaft, a gear tooth assembly, a first clutch device and a second clutch device, and the first clutch device and the second clutch device are arranged on the power input shaft in a back-to-back mode. The gear assembly comprises a first-gear gear in transmission fit with a first clutch device and a second-gear gear in transmission fit with a second clutch device, and the first-gear gear is connected with or disconnected from the power input shaft through the first clutch device. The second-gear gear is connected with or disconnected from the power input shaft through the second clutch device; according to the wet type back-to-back double-clutch assembly, the two clutch devices arranged in a back-to-back mode control the two gears with different gears to output power of an engine, different multi-gear transmission of the power of the engine is achieved, the wet type back-to-back double-clutch assembly better adapts to working conditions of different forms, and the working efficiency is improved. And the driving performance of the hybrid vehicle during direct driving of the engine is effectively improved.

The invention discloses a design method of a liftable rear suspension system of an amphibious vehicle. The design method comprises the following steps: S1, calculating parameters of a liftable rear suspension transmission mechanism; s1.1, calculating and checking a motor of the amphibious vehicle; s1.2, the size of the worm is calculated; s2, design and parameter selection of a damper: S2.1, parameter selection of a damping spring; s2.2, designing and calculating an elastic element; s2.3, a shock absorber is designed; and S3, designing a liftable rear suspension structure of the amphibious vehicle. By improving the mechanical structure design of the suspension, the amphibious vehicle can better adapt to different terrains and water environments and has higher driving performance, control stability and passing performance, and therefore the application field and task execution capacity of the amphibious vehicle are expanded.

The invention relates to a driving anti-skid method and system for a distributed electric driving vehicle. A torque gradient strategy is set, and by monitoring the rotating speed of each wheel of the vehicle and the opening degree of the accelerator pedal, the negative influence of sudden torque change on the vehicle performance is avoided. Meanwhile, the ASR control module dynamically adjusts the torque output of the motor through a PID control algorithm, when it is detected that the wheels slip, the ASR control module enables the torque of the slipping wheels to be gradually reduced, smooth distribution of the torque of all the wheels under different road conditions is ensured, and the phenomenon that the wheels slip on the low-adhesion road surface is prevented. The stability and safety of the distributed electric drive vehicle under various road conditions are effectively improved.

The invention discloses a rear floor shared by a pure electric vehicle model and an extended-range vehicle model and a vehicle body mounting structure thereof, the rear floor comprises a left rear floor longitudinal beam and a right rear floor longitudinal beam, and the front ends of the rear floor longitudinal beams are fixedly connected with connecting pieces which are integrated with the rear floor longitudinal beams and are used for being fixed with battery pack cross beams; a mounting groove for positioning and mounting the oil tank cross beam is formed in the connecting piece; and a common assembly structure for detachably fixing the connecting piece and the battery pack cross beam or detachably fixing the connecting piece and the oil tank cross beam is arranged on the connecting piece. According to the rear floor designed by the invention, the universality of a pure electric vehicle and an extended range vehicle is realized through a common assembly structure, and the rear floor is selectively assembled on a battery pack cross beam or an oil tank cross beam through a connecting piece.

The invention discloses a stubble cleaning and slurry stirring soil preparation machine for a paddy field. The machine comprises a connecting base, a folding module, a driving module, a soil turning module, a lengthening module and a fertilizer spraying module; a connecting beam slides in the connecting seat and is connected with a mounting seat; the folding stirrer is connected to one side of the mounting seat; the driving module is connected to one side of the connecting seat through the suspension module; the soil turning module is connected to one side of the folding module. The folding module supports folding and unfolding functions and allows the lengthening module to be inserted into the gap after the lengthening module is unfolded, so that flexible adjustment of the working width is achieved. The fertilizer spraying module integrates the fertilizer spraying function, fertilizer spreading can be carried out while stubble cleaning and slurry stirring are carried out, the overall operation efficiency is improved, and extra working steps needed by independent pesticide spraying are reduced.

The utility model provides a kind of brake system integrated module and vehicle with it.The brake system integrated module includes: support assembly, support assembly includes: first support, second support and third support, first support is provided with multiple, multiple first support interval setting, adjacent first support is connected by third support, at least part third support protrudes first support bottom setting, third support is provided with multiple, third support is interval setting along the length direction of first support;The one end of second support is connected with the one end of first support, and the other end of second support is connected with the other end corresponding to first support, and the top of second support is provided with a distance from the bottom of first support, wherein, each first support is correspondingly provided with second support.The present application solves the problem that the air brake system components are dispersedly arranged in the prior art, which occupies a larger longitudinal beam fixing space of the vehicle frame, and the installation time is longer on the assembly line.

The present invention relates to a vehicle control device that performs a first hardware protection control on the basis of a component-related parameter indicating the state or operating environment of a vehicle-mounted component when a driving mode is an automatic driving mode, and performs a second hardware protection control on the basis of a component-related parameter indicating the state or operating environment of the vehicle-mounted component when the driving mode is a manual driving mode. Second hardware protection control having higher protection performance of the in-vehicle component than the first hardware protection control is performed on the basis of the component-related parameter.

The invention discloses a power operation handle of an outboard outboard engine for controlling a ship, and relates to the technical field of outboard outboard engines for controlling ships. Comprising a handle, a shell, handle side covers, a bottom cover, an M aviation plug, a PCB control board, a rotating shaft sealing ring, a shell sealing ring, an oil seal, a rotating shaft, a positioning column and a thin nut, the handle is connected with the handle side covers, the handle side covers are arranged on the two sides of the shell, the bottom cover is fixed to the bottom of the shell, the M12 aviation plug is arranged on the bottom cover, and the handle is fixed to one end of the rotating shaft through the thin nut. The other end of the rotating shaft is connected with a positioning column in the shell, the rotating shaft is further matched with the bottom of the handle through a rotating shaft sealing ring, the shell is connected with the handle in a sealed mode through a shell sealing ring, and a PCB control panel is arranged below the rotating shaft and is in control connection with the M aviation plug and the rotating shaft. The system is reasonable in design, can achieve the precise control of on-hook equipment or other equipment, and improves the operation convenience and accuracy.

The invention relates to an automobile aluminum alloy front steering knuckle which comprises a steering knuckle body, a weight reduction cavity is formed in the steering knuckle body, and at least one sand discharging hole communicated with the weight reduction cavity is formed in the steering knuckle body in a penetrating mode. The two ends, corresponding to the length direction, of the steering knuckle body are bent in the opposite directions to form bent structures, one bent structure is formed by bending one end of the steering knuckle body towards the upper side, and the other bent structure is formed by bending the other end of the steering knuckle body towards the lower side. And the two bending structures are fixedly connected with reinforcing rib structures. By the adoption of the technical scheme, the technical problems that an existing front steering knuckle is heavy in weight and relatively high in manufacturing cost can be solved.

The invention discloses a hydraulic control system for a water propulsion device of an amphibious all-terrain vehicle, including a front vehicle and a rear vehicle, wherein a front vehicle propeller is respectively installed on both sides of the front vehicle, and a rear vehicle propeller is installed at the rear of the rear vehicle, and the oil circuit of the hydraulic control system is divided into an expansion oil circuit and a drive oil circuit, wherein the expansion oil circuit includes a parallel expansion oil circuit of the front vehicle and an expansion oil circuit of the rear vehicle, and the drive oil circuit includes a parallel drive oil circuit of the front vehicle and a drive oil circuit of the rear vehicle, wherein the expansion oil circuit of the front vehicle controls the expansion or folding of the front vehicle propeller, and the expansion oil circuit of the rear vehicle controls the expansion or folding of the rear vehicle propeller, and the front vehicle drive oil circuit and the rear vehicle drive oil circuit control the output power of each propeller. The propeller of the invention can adjust its posture in water and on land, thereby ensuring the vehicle body dimension limit when the vehicle is traveling on land; when it is expanded and pushed in water, the thrust on both sides of the vehicle body is different by controlling the speed difference of the propulsion devices on the left and right sides of the front vehicle, thus realizing the vehicle's underwater steering.

The utility model relates to the technical field of automobile cables, in particular to a light-weight, high-temperature-resistant and anti-electromagnetic-interference internal cable for a new energy automobile. Comprising a conductor, an insulating layer, a shielding layer and a sheath layer, the conductor is formed by regularly twisting or bunching a plurality of aluminum-magnesium-silicon alloy wires at one time according to a pitch diameter ratio of 8-10 times; the insulating layer coats the outer side of the conductor and is lapped by a polyimide film, and the lapping rate is 66%-75%; the shielding layer is coated outside the insulating layer and is of a double-layer shielding structure formed by an anti-electromagnetic permalloy wire material and tinned copper-clad steel; the permalloy wire is a braid layer made of 45%-50% Ni-Fe alloy; the tinned copper-clad steel is woven in a two-lap-two mode; and the sheath layer coats the outer side of the shielding layer. The weight of the cable is reduced, the high temperature resistance of the cable is improved, electromagnetic interference is effectively resisted, the service life of the cable is prolonged, and the safety of the cable is improved.

The invention belongs to the field of automobile control technology, and discloses a vehicle centering driving method, device, equipment and storage medium; the method comprises: acquiring a road image of a vehicle, identifying a drivable area in the road image; performing image analysis on the drivable area to obtain a line midpoint of the drivable area and pixel coordinates of the line midpoint; converting the pixel coordinates based on a vehicle-mounted coordinate system to obtain vehicle-mounted coordinates; obtaining a steering angle of the vehicle according to the vehicle-mounted coordinates and the vehicle coordinates, and controlling the vehicle to travel to the line midpoint according to the steering angle of the vehicle; the invention acquires a road image during driving and analyzes the road image to obtain the line midpoint in the image, converts the line midpoint into coordinates in the vehicle-mounted coordinate system and calculates the steering angle of the vehicle to the line midpoint, and controls the vehicle to travel in the center based on the steering angle, so that the vehicle passes through the drivable area to determine a target point instead of a lane line, and can control the vehicle travel more stably and accurately.

The invention provides a self-mobile device advancing method and device and a storage medium, and the method comprises the steps: obtaining point cloud data of a sensor scanning environment, and generating a local map according to a global static map; in the local map, obstacles located in the obstacle error range of the point cloud data are removed; and controlling the self-moving equipment to advance based on the local map after the obstacle is removed. According to the technical scheme, the driving capability of the self-moving equipment can be improved.

The invention relates to the technical field of thermal management of generators, in particular to a thermal management system of a free piston internal combustion engine generator with preheating, heat dissipation and heat storage functions. Comprising an engine, a temperature sensor is fixed to the engine, the top of the temperature sensor is connected with a whole vehicle ECU, one end of the whole vehicle ECU is connected with a controller, the top of one end of the engine is connected with a one-way control valve through a pipeline, and the bottom of the one-way control valve is connected with a water tank radiator through a pipeline; the bottom of the water tank radiator is connected with an engine water pump through a pipeline. According to the free piston internal combustion generator thermal management system with the preheating, heat dissipation and heat storage functions, cooling liquid flowing through a copper straight-through inner pipe is heated through PTC heating ceramic, the heated cooling liquid flows to an engine water jacket through an engine cooling system minor cycle to preheat an engine cylinder body, and the problems that an engine is hard to start normally due to overcooling, and the service life of the engine is prolonged are solved. Damage of cold start to the engine is greatly reduced, and normal and efficient operation of the engine is guaranteed.

The invention relates to the technical field of vehicle transmission, in particular to a wheel type hybrid transmission walking mechanical transmission system which is mainly composed of a terrain recognition module, a control module, a motor transmission module, a speed change module, a clutch module, a hydraulic transmission module, an energy storage module and a suspension module. The terrain environment around the wheel type walking machine is scanned in real time; the motor transmission module is directly connected with a driving wheel of the wheel type walking machine, and the walking machine is driven to advance or retreat through rotation of a motor. The hydraulic transmission module provides power for the wheel type walking machine through a hydraulic motor. The speed change module performs speed change control according to the instruction sent by the control module; the clutch module is used for disconnecting and connecting the corresponding motor transmission module and hydraulic transmission module according to the terrain requirement of the control module; the invention aims to provide a walking mechanical transmission system which is efficient, flexible and suitable for various terrains.

The utility model discloses a limited slip differential which comprises a differential body, a transmission support is arranged in the differential body and can rotate around a first axis, and a left half axle gear, a right half axle gear and a planetary gear meshed with the left half axle gear and the right half axle gear are arranged in the transmission support. The slip limiting mechanisms are respectively arranged on the left half axle gear and the right half axle gear and are used for releasing or locking the left half axle gear and the right half axle gear, so that the rotation speed of the left half axle gear and the right half axle gear is different from or the same as that of the transmission bracket; the limited slip differential can adapt to various road conditions, can prevent wheels on one side from slipping under the severe road conditions, does not need to be provided with friction plates, avoids the situation that the friction plates slip, can bear large torque, is of a mechanical overall structure, and is reliable in structure and convenient and fast to maintain and use in the follow-up process.

The invention provides a multifunctional hinged chassis and a tractor, the multifunctional hinged chassis comprises a front frame, a rear frame, a hinged shaft and a telescopic driving mechanism, the front frame and the rear frame are hinged through the hinged shaft, and the hinged shaft is arranged in the height direction; the rear frame comprises a fixed frame and a rotating frame, the fixed frame is hinged to the front frame through a hinge shaft, and the rotating frame is rotationally connected to the fixed frame in the length direction of the rotating frame; the first end of the telescopic driving mechanism is hinged to the front frame, and the second end of the telescopic driving mechanism is hinged to the fixed frame. The telescopic driving mechanism stretches out or retracts back to drive the front frame and the rear frame to generate relative angle deflection, at the moment, due to the fact that the front frame and the rear frame both generate relative position deflection, the turning radius is reduced in the steering process compared with a traditional front wheel steering type chassis, the turning radius of the chassis in the turning process is smaller, and the steering efficiency of the chassis is improved. And turning and U-turn can be realized in a smaller area range.

The invention provides a fuel supply system of an in-cylinder double direct injection engine, and relates to the technical field of fuel supply. Comprising a high-pressure oil pump subsystem, a low-pressure oil pump subsystem, a fuel filter subsystem, a fuel guide rail subsystem, an oil sprayer subsystem, a fuel pressure sensor subsystem, a fuel control unit subsystem, a fuel tank subsystem and a fuel pipeline subsystem. According to the intelligent fuel oil supply system, fuel oil consumption is effectively reduced through a wireless fuel oil monitoring and control subsystem such as a variable flow fuel oil distribution subsystem and an intelligent fuel oil preheating subsystem, compared with a traditional fuel supply system, the fuel oil cost of a user is greatly saved, and the application of the wireless fuel oil monitoring and control subsystem and the fuel oil control subsystem based on artificial intelligence is more convenient. Remote real-time monitoring and intelligent control of the fuel oil system are achieved, a user can conveniently know the state of the system in time and conduct necessary adjustment, and meanwhile the self-adaptive capacity and the response speed of the system are improved.

The present invention provides a multi-mode shifting and error-proofing adaptive adjustment method and system, the method comprising: S1, TCU receives current shifting mode information, determines the current vehicle operation shifting curve; S2, TCU obtains and statistically records the current vehicle operation information in real time, the current vehicle operation information includes engine speed, vehicle speed, mass, slope and driving subtotal mileage information; S3, TCU judges the reasonable shifting mode of the current vehicle according to the engine speed distribution ratio, vehicle speed distribution ratio, mass distribution ratio and slope distribution ratio within a driving subtotal mileage. When the driver misjudges or misoperates to select the wrong mode, the method automatically identifies and corrects the shifting mode according to the real-time road spectrum driving information (mass, ramp, vehicle speed, engine speed), and has a certain intelligent error-proofing reminder mechanism, so that the vehicle runs in a more reasonable shifting mode, which greatly improves the driving performance of the vehicle.

The present application relates to the technical field of composite materials, in particular to a folded variant lightweight structure and a pleated sandwich structure using the same, the folded variant lightweight structure comprising a flexible layer and a rigid layer fixed on the upper surface of the flexible layer; the rigid layer comprises a plurality of rigid units arranged in an interval array, each rigid unit comprising two parallelogram blocks symmetrically arranged in an interval, and the two parallelogram blocks are arranged in an inverted V shape. The pleated sandwich structure comprises the folded variant lightweight structure, and the upper surface and the lower surface of the folded variant lightweight structure are both fixedly connected with a skin layer. The present application folds the laminated structure composed of the flexible layer and the parallelogram blocks to form a three-dimensional structure with rigid and flexible parts, which has the advantages of high strength and lightweight, and the folding process is simple, the size can be adjusted according to actual needs, and the application flexibility and convenience of the structure are greatly improved.