200 results about "Vehicle brake" patented technology

This invention provides a method, device, and computer-readable storage medium for auxiliary braking of a motor vehicle, comprising: determining a target braking gear for a first auxiliary braking device that does not have kinetic energy recovery function when the auxiliary braking conditions are met; selecting an actual braking gear for any first auxiliary braking device based on the maximum braking power corresponding to each candidate braking gear; wherein the candidate braking gear level is not higher than the target braking gear, and the sum of the maximum braking power corresponding to the candidate braking gear and the maximum braking power of a second auxiliary braking device with kinetic energy recovery function is not less than the maximum braking power corresponding to the target braking gear; controlling each first auxiliary braking device to brake at its corresponding actual braking gear, so that the motor vehicle brakes with a total power not less than the target braking power; wherein, if the actual braking gear of a first auxiliary braking device is not the target braking gear, the second auxiliary braking device assists braking with a non-zero power.

This invention discloses a cleaning device for rail vehicle brake components, comprising: a storage tank for storing cleaning fluid; a support assembly, the storage tank being mounted on the support assembly; a receiving frame assembly, the brake components to be cleaned being placed inside the receiving frame assembly, and the receiving frame assembly being located inside the storage tank; two lifting assemblies symmetrically arranged on the support assembly; a disturbance cylinder, each lifting assembly having multiple disturbance cylinders connected to it, the top of the disturbance cylinder being open and the bottom being closed; and a drain pipe, the bottom of each disturbance cylinder being connected to a drain pipe, the drain pipe being inclined. The lifting assembly immerses the disturbance cylinders in the cleaning fluid and moves the disturbance cylinders containing the cleaning fluid above the fluid surface. This invention provides alternating rinsing of both sides of the brake components to be cleaned while simultaneously agitating the cleaning fluid, thereby effectively improving the cleaning effect.

This utility model belongs to the technical field of new energy vehicle braking system plugs, specifically relating to a novel braking system plug for new energy vehicles. It includes: a frame for connecting to a valve body within an integrated braking system, and an elastic layer sleeved and fixed on the frame to cooperate with a valve block within the valve body to block or allow the flow of brake fluid. This utility model achieves an integrated design between the frame and the valve body of the solenoid valve in the One-box braking system through pressing the frame against the valve body end face, meeting the high integration requirements of the One-box braking system. Furthermore, the various grooves, protrusions, blocks, and engaging parts provided between the frame and the vulcanized surface of the elastic layer not only increase the vulcanization area between the frame and the elastic layer, enhancing adhesion strength, but also further improve the radial and axial connection force between the frame and the elastic layer, thereby improving the overall service life and quality of the plug.

The application discloses a vehicle braking method, device, equipment and storage medium. In the process of driving a target vehicle, if the state of a traffic signal at a road intersection changes to prohibition of passing after a first preset time period, a first distance between the target vehicle and a stop line of the intersection is determined. If the first distance is not less than a first preset threshold, a first braking force is determined to brake the target vehicle. If the first distance is less than the first preset threshold, it is determined whether the rear wheel of the target vehicle can cross the stop line of the intersection within the first preset time period without changing the current speed. If yes, a continue driving signal is sent to the target vehicle. If no, a second braking force is determined to brake the target vehicle. The scheme can brake or pass the intersection in time when the vehicle encounters a limit situation, such as the traffic signal changing to prohibition of passing immediately, effectively reduces the phenomenon of vehicle running a red light, and can also avoid traffic accidents caused by the vehicle not reacting in time.

The utility model discloses a kind of all-terrain vehicle ABS gear ring mounting structures, belong to vehicle braking technical field, including gear ring, gear ring is fixed between rim mounting seat and brake disc, brake disc is fixed on the second installation column of several rim mounting seat;Gear ring inner ring is equipped with the flanging recessed towards rim mounting seat, and several installation lugs are equipped at flanging inner ring, and installation lug and the first installation column of rim mounting seat are connected, and the first installation column is located outside the second installation column.The utility model is suitable for front wheel without driving ability, but the car of front and rear ABS needs to be configured, the effective fixation of gear ring is realized, and stability is improved.

This application relates to a vehicle braking system including a DPB module (100) and an ESP module (200). The DPB module includes a accumulator (RSV), a master cylinder and a hydraulic cylinder (HM), an output port connected to one of the master cylinder and the hydraulic cylinder, a return port connected to the accumulator, a hydraulic cylinder motor (DM) for driving the hydraulic cylinder, and a first control unit. The ESP module includes wheel cylinder ports, an inlet port connected to the output port, a drain port connected to the return port, a supply line connecting the inlet valve of the wheel cylinder port to the inlet port, a drain line connecting the outlet valve of the wheel cylinder port to the drain port, a replenishment line connecting the supply line and the drain line and equipped with a pump (PE1 / 2), a pump motor (PM), and a second control unit communicatively connected to the first control unit. This application also relates to a vehicle braking method utilizing this system.

The invention relates to a rail vehicle brake, in particular for freight wagons, comprising a monitoring device and to a method for monitoring a rail vehicle brake. A rail vehicle brake (1), in particular for freight wagons, has a brake lever (1a) comprising a brake shoe (5), a brake cylinder (3), a lever adjuster (4) and a monitoring device (10). The monitoring device (10) has a detection unit (7, 7a, 7b, 7c, 7d, 8, 9) comprising corresponding sensors (71, 72, 73, 74, 75, 77, 81, 82, 90) which are formed by access to an electrical energy supply network of a rail vehicle to be equipped with the supply of electrical energy. A rail vehicle and a method for monitoring a rail vehicle brake (1) are provided.

This application relates to the field of vehicle braking component testing technology, and particularly to a calibration and testing device and method based on an electric vehicle electronic fuel dispenser. The calibration and testing device includes a fixing fixture, a wiring harness connection unit, a host computer system, a transmission unit, and a PLC control system. The fixing fixture is used to hold the electric vehicle electronic fuel dispenser to be tested. The wiring harness connection unit includes a power supply and a calibration programmer. The host computer system is connected to the calibration programmer via a universal serial bus port. The transmission unit includes a positioning fixture, a telescopic cylinder, and a servo motor. One end of the positioning fixture is fixedly connected to the servo motor, and the servo motor is fixedly connected to the telescopic cylinder. One end of the PLC control system is connected to the host computer system via a network cable. This application ensures the synchronization and consistency of calibration and testing procedures for different fuel dispensers, and allows for intuitive comparison of line graphs of test results from different angles of the same fuel dispenser, achieving fully automated operation and quantitative performance evaluation.

This invention belongs to the field of additive remanufacturing technology, specifically relating to an optimization method and system for the additive remanufacturing process of brake discs for rail vehicles. The method analyzes the material properties of the brake disc substrate to obtain material property data, monitors the solidification front morphology of the molten pool in real time during the additive remanufacturing process, analyzes and infers the differences between the solidification morphology of the substrate and the molten pool based on these two sets of data, and optimizes and adjusts the additive remanufacturing process parameters according to the inference results. By accurately identifying the material properties of the substrate and combining real-time monitoring of the molten pool solidification front, this application can deeply analyze the underlying causes of local thermal anomalies in the molten pool, identify and correct specific problems such as insufficient or excessive laser energy, uneven laser spot energy distribution, or abnormal scanning paths, thereby achieving precise optimization and adjustment of the additive remanufacturing process parameters, providing a reliable and efficient solution for the additive remanufacturing of rail vehicle brake discs.

A method for determining operating information for an electric brake booster while a motor is in a non-operating mode and an evaluation device for implementing the method include determining whether a first value I1 of a first distance sensor of a driver brake force transmission element is within a first comparison value range W1, and determining whether a second value I2 of a second distance sensor associated with a displaceable motor force transmission element is within a second comparison value range W2. If the first and second values ​​are within the respective comparison value ranges, the method determines, as operating information for the brake booster, that a brake operating element coupled to the driver brake force transmission element is not being operated, that the driver brake force transmission element is in its first starting position, and / or that the motor force transmission element is in its second starting position.

The application provides a kind of based on reinforcement learning's line control brake system electromechanical compound brake smoothness control method, this method includes the following steps: obtaining the current operating state data of vehicle and constructing state space vector;State space vector is composed of sliding window state sequence, input to the reinforcement learning intelligent agent model pre-trained, output basic distribution proportion coefficient;Target total brake torque is analyzed into target motor brake torque and target line control friction brake torque;In the transition window period of dynamic handover of motor brake and line control brake, the dynamic error between target deceleration and actual longitudinal deceleration is calculated in real time;When dynamic error is greater than zero and exceeds preset dead zone threshold, generate transient compensation torque instruction and send to motor controller, so that the actual output torque of drive motor is the sum of target motor brake torque and transient compensation torque.The application realizes the continuous smooth transition of vehicle braking force in brake mode dynamic switching process.

This invention provides a vehicle brake hold system that can prevent the vehicle from starting unintentionally by the driver. [Solution] The vehicle brake hold system 10 is a vehicle brake hold system 10 that maintains braking force even when the driver releases the brake operation after the driver has applied braking force to each wheel by operating the brakes, and when the mode of the vehicle's automatic transmission 14 is changed, the system increases the maintained braking force in accordance with the change in driving force due to the change in mode.

This technology provides a way to determine the state of air control valves and flow paths used in vehicle brakes without requiring any special operation. [Solution] The state determination device 100 is a state determination device 100 that determines the state of at least one of an air control valve and a flow path used in a vehicle brake, and the air control valve includes an acquisition unit 110 that discharges air at an output pressure corresponding to the input pressure, which is the pressure of the introduced air, into a supply flow path to the brake cylinder, acquires first measured values ​​of the input pressure and output pressure at one or more timings during the pressure-increasing period when the input pressure increases, and acquires second measured values ​​of the input pressure and output pressure at one or more timings during the pressure-reducing period when the input pressure decreases, a calculation unit 120 that calculates the difference between at least one of the input pressure and output pressure during the pressure-increasing period and the pressure-reducing period based on the first measured value and the second measured value, and a determination unit that determines the state of at least one of the air control valve and the flow path according to the difference.

This invention provides a vehicle brake, comprising: a motor and multiple circuit boards, including a first circuit board and a second circuit board. The first circuit board is mounted on the outer side of the output end of the motor shaft, with its surface perpendicular to the motor axis. The surface area of ​​the first circuit board is smaller than that of the second circuit board. The vehicle brake provided by this invention reduces the axial space occupied by the brake components through redesigned circuit board positions and functions, while providing reliable electrical connections for brake functionality. Its ingenious and rational spatial layout improves vehicle space utilization and has wide applicability.

This invention provides a vehicle braking force distribution method, device, controller, and storage medium. The method includes: acquiring the braking signal from the vehicle's brake pedal to obtain the vehicle's total braking force; if it is determined that the vehicle's current speed is greater than the minimum speed required to trigger regenerative braking, calculating the vehicle's rear axle braking force; if a tendency for the vehicle's front wheels to lock up is detected, setting the vehicle's front axle braking force as the critical braking force required for front axle lockup; if it is determined that the rear axle braking force is greater than the maximum allowable regenerative braking force of the rear axle, setting the mechanical braking force of the rear axle as the difference between the rear axle braking force and the maximum allowable regenerative braking force of the rear axle, and setting the regenerative braking force of the rear axle as the maximum allowable regenerative braking force of the rear axle; if a tendency for the vehicle's rear wheels to lock up is detected, setting the vehicle's rear axle braking force as the critical braking force required for rear axle lockup. This invention maximizes the utilization of regenerative braking force and achieves optimal braking performance through braking force distribution.

A vehicle brake operating apparatus includes a steering member configured to be gripped by a hand of a driver for a steering operation, an operation member configured to be provided on the steering member so as to be operable by the hand of the driver, a detection device configured to detect an operation input to the operation member by the hand of the driver, and a controller configured to obtain a detection result of the operation. The operation member is used for at least a brake operation. The controller is configured to control, based on the detection result, a variable mechanism that changes an operation force, an operation amount or both of the operation force and the operation amount, each of which is input to the operation member by the driver along with the brake operation.

This invention discloses a method for testing the braking performance of sightseeing vehicles, belonging to the field of vehicle braking performance testing. The method includes the following steps: S1, constructing a basic parameter dataset for the sightseeing vehicle; S2, obtaining a calibrated multi-dimensional braking process dataset; S3, calculating the comprehensive braking performance score after thermal fade compensation; S4, predicting the remaining braking life of the sightseeing vehicle and constructing a corrected final comprehensive performance score; S5, determining whether the vehicle is qualified, requires maintenance, or is unqualified, and outputting the determination result and specific reasons; S6, transmitting the data to the server and IoT platform via dual-link redundancy of NB-IoT and 4G; S7, dynamically updating the data to form a closed-loop iterative optimization throughout the entire process. This sightseeing vehicle braking performance testing method achieves a synergistic improvement in testing accuracy, scenario adaptability, data security, and iterative capabilities.

This invention discloses a temperature-controlled openable / closed automotive wheel hub cover and a vehicle thereof. The hub cover includes a cover body with ventilation openings on its surface. One side of the ventilation opening is covered and connected to a blade via a connecting shaft. A temperature-controlled drive assembly is also connected to the end of the blade connecting shaft. One end of the temperature-controlled drive assembly is connected to the cover body, and the other end is connected to the blade. The beneficial effects of this invention are: reduced wind resistance: when the vehicle is cruising normally and the braking system temperature is low, the blade panel remains in the closed position. At this time, the wheel hub opening is covered, effectively reducing air resistance. Enhanced heat dissipation: when the vehicle brakes, causing the system to heat up, the heat transferred to the temperature-controlled drive assembly will drive the blade panel to the open position. At this time, an opening is formed at the wheel hub, providing forced air cooling to the brake disc. Improved vehicle safety: when the vehicle deceleration exceeds a threshold, emergency braking will be triggered, forcibly activating heat dissipation, thereby preventing the braking system from failing due to overheating and guiding the system to a preset safe state.

The present disclosure provides a vehicle brake and a control method thereof, the vehicle brake including a reservoir configured to store fluid therein, a hydraulic circuit configured to deliver hydraulic pressure to a wheel of a vehicle, a plurality of valves provided to regulate a flow of the fluid in the hydraulic circuit, and a master cylinder including a cylinder, a master piston movably disposed within the cylinder and having a pocket formed on one side of the master piston, and a center piston disposed within the cylinder and having a penetration hole formed in at least a portion of the center piston, wherein the penetration hole is formed to have a size smaller than a cross-sectional area of the pocket, and as the master piston moves, at least a portion of the center piston is inserted into the pocket and thus a pressurization area of the master piston is reduced.

The application provides a vehicle braking control method, system and vehicle, and belongs to the technical field of vehicles. The vehicle braking control method comprises the following steps: in response to the operation of a trailer mode, controlling a power source of the first vehicle to be in an off state in the trailer mode, and enabling an electronic parking brake system to be in an operating state; detecting a current distance between the first vehicle and a second vehicle in real time; based on a size relationship between the current distance and a preset distance, controlling a working state of the electronic parking brake system at a current time, the working state comprising a braking state and a non-braking state. The application can control the distance between the rescue vehicle and the rescued vehicle within a safe distance range without active control by the driver of the rescue vehicle, and ultimately achieves the effect of reducing the driving difficulty of the driver of the rescue vehicle.

This invention discloses an adaptive robust brake-by-wire method and system, relating to the field of vehicle brake-by-wire technology. The method comprises the following steps: S1, establishing a multi-coupled dynamic mathematical model of the brake-by-wire system and determining the system state variables and control inputs; S2, online observation and approximation of the system's hydraulic coupling disturbances, mechanical friction disturbances, and external road surface disturbances; S3, designing a hierarchical adaptive robust control based on backstepping sliding mode control technology and combined with observations from a multi-disturbance observer; S4, adjusting the gain coefficient of the sliding mode control online; S5, verifying the asymptotic stability of the entire control system; and S6, converting the designed control law into an electrical signal and inputting it to the actuator of the brake-by-wire system. This invention achieves precise, rapid, and stable control of braking pressure under complex operating conditions, improving the robustness and adaptability of the brake-by-wire system.

Embodiments of the present disclosure disclose a vehicle control method and device, electronic equipment and storage medium, the method comprising: determining whether a minimum safety system condition is met when a preset level of failure occurs in an automatic driving system of a vehicle; if yes, determining whether the preset level of failure is a failure of a positioning module and / or a perception module in the automatic driving system; if yes, determining whether the vehicle is currently driving on a straight road; if yes, or the preset level of failure is not a failure of the positioning module and / or the perception module in the automatic driving system, determining a first longitudinal brake acceleration based on a preset acceleration change rate constraint curve; determining a target longitudinal brake acceleration according to the first longitudinal brake acceleration and a second longitudinal brake acceleration output by a planning module in the automatic driving system; and controlling the vehicle brake according to the target longitudinal brake acceleration. The present disclosure improves the safety and smoothness of the vehicle during braking.

A brake assist system for a vehicle has a pressure sensor adapted to be affixed to a brake pedal of the vehicle, a brake actuator connected to the brake of the vehicle, and a controller connected or interconnected to the pressure sensor and to the brake actuator. The pressure sensor measures a pressure applied by a foot of a user of the vehicle upon the brake pedal and to produce an output signal proportional to the pressure applied. The brake actuator applies a force to the brake of the vehicle. The controller converts the output signal of the pressure sensor to a signal for moving the brake actuator. The brake actuator is a servomotor. The controller is adjustable so as to change a signal from the brake actuator relative to the output signal of the pressure sensor.

The present application relates to the field of rail vehicle braking technology, and discloses a power actuation control method in rail vehicle braking, comprising: collecting a stator current sequence of a braking torque generation unit, calculating a first-order forward difference value to identify a load stiffness jump characteristic and determine a brake shoe contact position, locking the current effective value corresponding to the brake shoe contact position as a clamping current reference, adjusting the output torque compensation mechanism gap in response to the brake shoe contact position, and locking the integral path in the anti-slip adjustment unloading stage to maintain the stator current at the clamping current reference, wherein the present application uses electromagnetic parameter surface layer mutation to accurately offset the transmission gap of the mechanism, realizes physical quasi-synchronization of the electric command and mechanical action, suppresses the mechanism rollback phenomenon in the anti-slip stage, guarantees the real-time performance of the braking force reconstruction, and shortens the braking response time.

The utility model discloses a kind of vehicle bottom brake main pipe connecting devices, it is related to vehicle braking technical field, including connecting device, the top of the connecting device is provided with fixed pipe, the side of the connecting device is provided with fixed plate, the surface of the connecting device is provided with clamp.The utility model is fixed by the thread connection between the clamp and threaded pipe between connecting device and fixed pipe by aligning brake main pipe to corresponding clamp block, then inserting, then screwing sleeve, can effectively prevent internal liquid leakage by sealing ring, after fixing is completed, insert snap ring at the gap between sleeve and connecting pipe, then screw up fixing bolt and fix, by limiting the position of sleeve, prevent sleeve from rotating, to prevent sleeve from loosening when vehicle is running, by fixed magnetic attraction strip, then connecting plate is placed at vehicle bottom, then insert bolt in connecting plate interior, to fix connecting part.

The application discloses a brake force distribution debugging method and system based on virtual software, and comprises the following steps: establishing a virtual vehicle dynamics model; distributing different proportions of motor deceleration brake force and mechanical brake force according to different conditions; testing the vehicle braking effect when different brake force distribution proportions are adopted based on the established virtual vehicle dynamics model, and obtaining the optimal brake force distribution proportion. The method can realize reasonable and safe brake force distribution, ensure that the automobile can recover and utilize more energy under the premise of safety and reliability, fully exert the vehicle capacity recovery function, and effectively reduce energy consumption.

This application discloses a vehicle braking method, related devices, and a vehicle, relating to the field of vehicle control technology. During vehicle braking, the method can determine the risk of backward roll based on braking and driving status information. Once this risk is determined, the method controls the master cylinder to maintain a first pressure value or increases the pressure of the master cylinder based on the first pressure value, thereby eliminating the risk of backward roll. This method enables timely detection of backward roll risk during vehicle braking and timely elimination of the risk by controlling the master cylinder, preventing vehicle rollback, eliminating safety hazards, and ensuring vehicle safety.

The utility model discloses a kind of electrical double control brake systems of remote control loader, it belongs to engineering machinery technical field.It solves the defect that human driving control cannot adapt to narrow space operation, operation under dangerous environment in the conventional loader braking of prior art.Its main structure includes air source assembly, air source assembly is connected with parking component and control component respectively, control component is also connected with the execution component for controlling vehicle brake, control component includes gas brake valve, relay valve, proportional solenoid valve and shuttle valve, the air outlet of air source assembly is connected with gas brake valve, relay valve and proportional solenoid valve respectively, gas brake valve is connected in parallel with relay valve, and the two air inlets of shuttle valve are connected with gas brake valve and relay valve respectively, the signal end of relay valve is also connected with proportional solenoid valve.The utility model is mainly used on loader and other engineering machinery.

This application discloses a vehicle braking control method, device, electronic equipment, and storage medium, comprising: monitoring the coefficient of friction of the road surface on which the vehicle is located, identifying whether the vehicle is in a split-road braking condition, obtaining the yaw angle deviation of the vehicle, determining the first longitudinal braking force of the first front wheel based on the yaw angle deviation, determining the second longitudinal braking force and rear wheel steering angle of the first rear wheel based on a predetermined target braking state of the vehicle, determining the braking clamping force of the second pair of wheels based on an anti-lock braking system (ABS) strategy, and, when the vehicle is in a split-road braking condition, performing braking control on the corresponding wheels based on the first longitudinal braking force, rear wheel steering angle, second longitudinal braking force, and braking clamping force. This application, through independent and precise management of each wheel, enables coordinated operation of the front wheel yaw control on the high-friction side, the rear wheel feedforward steering and braking, and the ABS control of the two wheels on the low-friction side, thereby improving the vehicle's split-road braking performance.

Brake system (1) for a motor vehicle, which has a hydraulically actuatable wheel brake (8-11) for each wheel of the motor vehicle, wherein each wheel brake (8-11) is each provided with a hydraulic brake actuator (12-15) for actuating it, which has a hydraulic pump (P) and a drive motor (M) for the hydraulic pump (P). The invention provides that the brake system (1) has a main brake cylinder (6), which is hydraulically connected to the wheel brakes (8-11) for actuating the wheel brakes, wherein between the main brake cylinder (6) and each wheel brake (8-11) a first controllable separation valve (T8-T11) is connected.