125 results about "Anti-lock braking system" patented technology

Disclosed in the present application is a wheel anti-lock braking system applicable to hill braking. In the wheel anti-lock braking system, a wheel speed identification module is used for identifying a vehicle wheel speed signal and a wheel acceleration signal; a vehicle speed acquisition module is used for calculating a vehicle body speed signal; a driving intention identification module is used for obtaining a front and a rear axle enable flag bit; a state machine module is used for determining whether the working state of a low-speed hill anti-lock braking system is a standby state or a shutdown state, and starting a conventional anti-lock braking system when the working state of the low-speed hill anti-lock braking system is a shutdown state; the state machine module receives the front and rear axle enable flag bits, and transmits the front and rear axle enable flag bits to a control logic module when the working state of the low-speed hill anti-lock braking system is a standby state; and the control logic module is used for sending a low-speed hill anti-lock braking system control command when wheels show a tendency to lock up. The present application realizes anti-lock braking control over wheels at low speeds, especially during hill braking, which cannot be achieved by conventional wheel anti-lock braking systems.

The invention relates to the technical field of vehicle speed prediction, in particular to a vehicle speed prediction method and device and a computer program product. The vehicle speed prediction method comprises the steps of collecting a first driving parameter of a vehicle in a current period; based on the first driving parameter, determining a working condition classification corresponding to the first driving parameter; and inputting the first driving parameter, the second driving parameter of the previous period and a vehicle speed error obtained according to the previous period into a vehicle speed prediction model corresponding to the working condition classification, and obtaining a predicted vehicle speed output by the vehicle speed prediction model. According to the method, the vehicle speed prediction model is selected and adjusted in a targeted mode through working condition classification, the prediction accuracy and real-time performance are effectively improved, and more reliable vehicle speed information support can be provided for electronic control systems such as an anti-lock braking system (ABS) and an electronic stability control system (ESC).

A brake system and a method for controlling a brake system. The brake system may include a first module having a first pressure supply unit with an electromotive drive, an optional second pressure supply unit and a first control device for controlling the first pressure supply unit; a second module having a third pressure supply unit, isolation valves and brake-pressure-adjusting valves, and a second control device for controlling the brake-pressure-adjusting valves; and a detection unit for detecting a first case of error. The brake system is designed such that, in the first case of error, in order to provide an ABS function and / or a yaw torque intervention, it implements a (wheel-specific and / or selective) adjustment of the pressures in the wheel brakes by actuating at least one of the brake-pressure-adjusting valves of the second module and / or the isolation valves of the second module and the first pressure supply unit.

The invention relates to the technical field of vehicle safety, and discloses an intelligent safety early warning and emergency braking linkage device for an electric motorcycle. According to the device, the driving state and the surrounding environment of the motorcycle are monitored in real time by integrating various sensors, the relative distance between the motorcycle and an obstacle, the braking distance and the acceleration change rate can be accurately calculated, so that timely early warning of potential dangers is achieved, when abnormal conditions are detected, safety early warning signals can be rapidly sent out, and the safety of the motorcycle is guaranteed. The anti-lock braking system has the advantages that the anti-lock braking system is linked with the anti-lock braking system, emergency braking is automatically executed, the response time of a rider in emergency is effectively shortened, the risk of misjudgment is effectively reduced, the user feedback module provides real-time state information and safety suggestions for the rider through a networking data screen, the safety awareness and the coping capacity of the rider are further enhanced, and the safety of the rider is improved. According to the device, the active safety protection level of the motorcycle is improved, the accident rate can be reduced, and a safer travel environment is created for a rider.

The invention relates to the technical field of braking systems, and discloses a vehicle braking force determining method and device, a vehicle and a medium. Determining a target pedal travel based on the pedal travel signal; the temperatures of all brake discs, the depths of brake pedals, the activation states of the anti-lock braking system and the current braking force fed back by the braking executing mechanism in real time are obtained, and heat fading analysis is conducted on the braking executing mechanism based on the temperatures of all the brake discs, the depths of the brake pedals, the activation states of the anti-lock braking system and the current braking force; obtaining a heat fading analysis result; and in response to a current brake pedal feeling determined by the driver, determining a target braking force corresponding to the target pedal travel based on the current brake pedal feeling and the heat fading analysis result. The multi-dimensional parameters are adopted for heat fading analysis, different driver operation habits are adapted, accurate recognition of the braking force is facilitated, and the user experience is greatly improved.

The invention discloses an ABS fault alarm method, device and equipment based on acceleration cross validation and a storage medium, and relates to the technical field of vehicle safety, and the ABS fault alarm method based on acceleration cross validation comprises the steps that under the condition that the vehicle speed exceeds a preset speed threshold value, the front wheel acceleration and the rear wheel acceleration of a vehicle are detected; determining the road surface condition of the vehicle according to the front wheel acceleration and the rear wheel acceleration; adjusting the value of a fault counter according to the road surface condition, the front wheel acceleration and the rear wheel acceleration; and when the adjusted value of the fault counter is greater than or equal to a first pre-designed value, reporting a wheel speed signal fault and lightening an ABS fault lamp. According to the anti-lock braking system, the situation that the anti-lock braking system misreports the wheel speed signal on the bumpy road surface can be avoided, and the reliability and driving safety of the ABS are remarkably improved.

A method and system for providing maximum trailer braking during a high pressure demand, such as during autonomous emergency braking (AEB), for tractor-trailers is provided. The system can include a brake controller of the trailer that uses only tractor anti-lock brake system (ABS) data from the tractor wheels, without using any trailer ABS information, to estimate the surface friction and generate a high or low pressure command to be sent to the trailer based on only the tractor ABS data. The estimation of surface friction may be accomplished using the ABS information from the tractor and the pressure being demanded to determine a percent reduction of pressure requested by the tractor that may be compared to a threshold percentage to differentiate between high and low mu surfaces in real time.

The invention relates to the technical field of vehicle control, and discloses a vehicle control method, a readable medium, electronic equipment and a program product. The vehicle control method comprises the steps that under the condition that an anti-lock braking system of a vehicle is in a working state, an electronic control unit of the vehicle can obtain the acceleration of wheels of the vehicle at the current moment, the acceleration and preset parameters are superposed, and the steady-state value variable quantity of the vehicle is obtained. Wherein the preset parameter is associated with the vehicle speed. Furthermore, the electronic control unit of the vehicle can superpose the steady-state value variable quantity and the steady-state value at the previous moment to obtain the steady-state value of the vehicle at the current moment, and the steady-state value is used for indicating the driving stability of the vehicle. And under the condition that the steady state value at the current moment is smaller than a set threshold value, an anti-lock braking system of the vehicle is triggered to release pressure. By means of the vehicle control method, delayed triggering caused by the fact that the anti-lock braking system is triggered to release pressure according to the slip rate can be avoided, and the stability of the vehicle is improved.

The invention relates to the technical field of vehicle active safety, and discloses an anti-lock braking system and control method based on wheel speed prediction.The control method comprises the following steps that acoustic and vibration signals reflecting tire-road surface interaction are collected in real time through a predictive sensor set, and a conventional wheel speed signal is combined; and extracting a predictive feature vector and a conventional dynamic feature vector. The core of the method is that a time sequence prediction neural network is utilized to process fused time sequence features, and an optimal slip rate target and an optimal control strategy identifier are generated at the same time in a prospective manner. And the system dynamically selects and switches an optimal control algorithm from a preset control strategy library according to the optimal control algorithm, and carries out closed-loop brake pressure regulation by taking the predictive target as a guide. According to the method, traditional reaction type control is converted into predictive control, response lag of a braking system during sudden change of the road surface is fundamentally overcome, and the stability, efficiency and safety of the braking process are remarkably improved.

The invention relates to a method for determining the tire pressure (104) of at least one vehicle tire (8) of a vehicle (1), wherein the vehicle (1) has a tire pressure monitoring system (2) for detecting the tire pressure (104) and / or a pressure gradient (106) of the at least one vehicle tire (8), an electronic stability program (4) and an anti-lock braking system (6), wherein an active intervention of the electronic stability program (4) and / or the anti-lock braking system (6) is detected and, in the event of a detected active intervention, a sampling rate (102) for detecting the tire pressure (104) and / or the pressure gradient (106) is temporarily increased.

Air preparation unit (102) for a brake system (100) of a commercial vehicle, wherein the air preparation unit (102) has the following features: a foot brake module connection (114) for pneumatic or electrical and pneumatic coupling of the air preparation unit (102) with a foot brake module (116) of the brake system (100); at least one valve unit (110) for applying a control pressure to the foot brake module connection (114) for actuating the foot brake module (116); and a control unit (118) for controlling the valve unit (110), characterized by the fact that wherein the control unit (118) is coupled or can be coupled to at least one wheel speed sensor (122) of the commercial vehicle and is configured to control the valve unit (110) and / or at least one control valve (126; 200) of an anti-lock braking system of the commercial vehicle using a wheel speed sensor signal (124) generated by the wheel speed sensor (122) and wherein the control unit (118) is configured to read / tap speed signals from the same sensor which supplies speed signals to an ABS / or EBS system of the commercial vehicle.

The present invention relates to an anti-lock braking system (ABS) module (200) for a vehicle having an integrated DC-DC converter (114). The ABS module (200) comprises at least one pump (102) connectable to a brake master cylinder (104), at least one electric motor (106) for operating the at least one pump (102), at least one valve (108) in fluid communication with the at least one pump (102), and a control unit (110) powered by a main power supply (112) through the DC-DC converter (114) to operatively control the at least one electric motor (106) and the at least one valve (108), characterized in that the DC-DC converter (114) is integrated within the control unit (110). In an embodiment of the invention, the electric power supplied to the at least one electric motor (106) and the at least one valve (108) is through the DC-DC converter (114).

An accumulator cover for an accumulator for an anti-lock brake system includes a porous body part that closes one open side of a cylindrical space of the accumulator and includes a plurality of micropores through which gas passes, wherein a piston is installed to be reciprocally movable in the cylindrical space. The accumulator cover also includes a body coupling part connected to the porous body part and coupled to a body of the accumulator in which the cylindrical space is disposed. A method for manufacturing the accumulator cover is also provided.

A diagnostic tool connected to an anti-lock braking system (ABS system) is described. The diagnostic tool is capable of powering on the ABS system and measuring the load current of the ABS system while the ABS system starts up. This startup load current signature is then compared to what is considered a normal startup load current signature. Such a comparison allows the diagnostic tool to determine whether the ABS system is functioning properly or whether there is a fault with the ABS system. Additional features on the diagnostic tool also allow the tool to communicate with the ABS system via power-line communications (PLC communications) and to determine whether there are any issues with those communications. Finally, the diagnostic tool is able to receive and translate any stored or active ABS fault codes generated by the ABS system and to display those fault codes to the user.

The invention provides an unmanned special vehicle anti-lock braking system, which comprises a brake caliper, a brake disc, a wheel speed sensor, a pressure regulator, an energy accumulator, an oil storage tank, a hydraulic pump, a logic controller and a brake pipeline, and has the main function of forcibly decelerating and even stopping a running vehicle according to the requirements of a driver. And the vehicle can be stably parked on a flat road and a ramp, or the speed of the vehicle running downhill is kept stable. Brake calipers on the two sides of the brake system are independently connected with a pressure regulator and can independently control the brake pressure on one side, and when a logic controller receives a brake instruction of a whole vehicle controller, the brake instruction is one hundred percent of brake or emergency brake, the system judges that the vehicle needs emergency stop, an anti-lock braking system is started immediately, and the brake pressure on one side is controlled. The driving wheels on the two sides are intermittently braked at high frequency through the pressure regulator, so that sideslip and deviation of a vehicle track relative to the ground are reduced, the braking performance of the unmanned special vehicle is improved, the braking distance is shortened, and the device has the advantages of being high in integration degree and rapid in response.

The invention relates to a fixed-time sliding mode anti-lock braking control method and system based on fuzzy logic and a neural network. The method comprises the steps that a dynamic model of a vehicle anti-lock braking system is established; designing a fixed time sliding mode controller, and constructing a sliding mode surface containing a terminal attractor and an approaching law; a T-S fuzzy logic system is adopted to approach a non-linear tire-road surface friction function in an ABS system on line; an approaching law of the sliding mode controller is approached online by adopting an artificial neural network; carrying out online optimization on additional control item gains introduced by neural network approximation by adopting a particle swarm optimization algorithm; and the fixed time stability of the whole closed-loop system is monitored based on the Lyapunov stability theory. According to the invention, the braking efficiency, the stability and the robustness of the ABS system are effectively improved, and the braking distance and the braking time are reduced.

An anti-lock braking system (12) for vehicles (10) is specified, in particular for vehicles driven by muscle power and / or engine power, comprising a first hydraulic connection (18) to which a brake force transmitter (14) can be connected, and a second hydraulic connection (20) to which a brake force receiver (16) can be connected, wherein the first hydraulic connection (18) is connected to the second hydraulic connection (20) via a hydraulic path (22).The anti-lock braking system (12) further comprises a pressure modulation valve (24) arranged between the first hydraulic connection (18) and the second hydraulic connection (20) in the hydraulic path (22), wherein the pressure modulation valve (24) comprises a control piston (26) arranged in sections in a hydraulic chamber (28) of the pressure modulation valve (24), and a valve drive (30) with which the control piston (26) can be adjusted between a first end position, in which the pressure modulation valve (24) is open and in which a brake pressure can be transmitted unhindered from the first hydraulic connection (18) to the second hydraulic connection (20), and a second end position, in which the hydraulic path (22) from the first hydraulic connection (18) to the second hydraulic connection (20) is blocked. The control piston (26) occupies a different volume in the hydraulic chamber (28) in the first end position and in the second end position.Furthermore, a vehicle (10) and a method for braking a vehicle (10) are specified.

The invention provides a collision analysis method and device, electronic equipment and a storage medium, and the method comprises the steps: obtaining a request deceleration of an automatic emergency braking function of a test vehicle, and first deceleration data and second deceleration data in the triggering process of the automatic emergency braking function of the test vehicle, the test vehicle intrudes a target distance of the target vehicle colliding with the test vehicle; the first deceleration data is the deceleration in the process that the anti-lock braking system function of the test vehicle is not triggered; the second deceleration data is the deceleration in the function triggering process of the anti-lock braking system of the test vehicle; according to the requested deceleration, the first deceleration data and the second deceleration data, the braking distance of the tested vehicle prolonged due to the function of the anti-lock braking system is calculated; and performing numerical comparison on the braking distance and the target distance to obtain a collision analysis result. According to the invention, vehicle collision can be accurately analyzed, and reliable data support is provided for optimization of a subsequent safety system.

A control method for regenerative braking of a road vehicle comprising the steps, for each driving wheel (4, 5), of: estimating a grip factor (G); defining or collecting a vertical load (Fz); computing a value of a maximum braking capacity (MRT) depending on the grip factor (G) and the vertical load (Fz); controlling a braking system (13), following a request for braking, so as to actuate a hydraulic unit (18) to exert a first braking torque (mBT) and so as to actuate in regenerative electric braking each wheel at least according to the respective maximum braking capacity (MRT) value and in particular the first braking torque (mBT); and modulating the first braking torque (mBT) and / or the second braking torque (eBT) so that their sum is equal to or less than the respective maximum braking capacity (MRT) value.

The embodiment of the utility model discloses a quick-release connector and a bicycle, the quick-release connector is used for connecting an oil inlet end of an anti-lock braking system of the bicycle with an oil pipe, and the quick-release connector comprises a female head, a male head and a connecting bayonet lock. The female head is connected to the oil inlet end, and two first clamping grooves which are oppositely arranged are formed in the female head; the male head is connected to the oil pipe, the end, away from the oil pipe, of the male head is detachably inserted into the end, away from the oil inlet end, of the female head, two oppositely-arranged second clamping grooves are formed in the male head, and the first clamping grooves communicate with the second clamping grooves in an aligned mode so that the first clamping grooves can be exposed out of the second clamping grooves; the connecting clamping pin is inserted into the second clamping groove and forms extrusion force on the male head in the radial direction, and the connecting clamping pin abuts against the inner wall, in the axial direction, of the first clamping groove and the inner wall, in the axial direction, of the second clamping groove so as to limit relative movement of the male head and the female head in the axial direction. Through cooperation of the connecting clamping pin, the male head and the female head, the problem that the disassembly and assembly process of the quick-disassembly connector is tedious is effectively solved.

The present disclosure relates to a composite cable for a vehicle and a composite cable assembly, which are capable of simultaneously providing a communication function and power to an electronic parking brake (EPB) and an anti-lock brake system (ABS) for use in a vehicle, and maximizing electromagnetic compatibility (EMC) shielding performance between internal components or external cables.

The invention relates to an anti-lock braking control method and device, a controller and a readable storage medium. The method comprises the steps that in the emergency braking process of a target vehicle, a wheel angular velocity signal, a braking pressure signal and the vehicle speed of the target vehicle in the current braking period are obtained; obtaining harmonic frequencies and harmonic energy of a plurality of harmonics corresponding to the wheel angular velocity signal, and obtaining a harmonic energy ratio of each harmonic according to each harmonic energy; under the condition that the harmonic energy ratio or the vehicle speed meets a preset condition, a brake pressure control gain coefficient corresponding to the current brake period is obtained according to the harmonic energy ratio and the vehicle speed; on the basis of the brake pressure control gain coefficient and the brake pressure signal, a brake instruction in the current brake period is generated; the braking instruction is used for controlling the braking process of an anti-lock braking system of the target vehicle in the current braking period. By adopting the method, the applicability of the anti-lock braking control method can be improved.

Housing structure for mounting a solenoid coil assembly for receiving the solenoid coil assembly that controls a flow path of a hydraulic device, comprising: a terminal clamping area forming a terminal clamping opening designed to be coupled to a terminal of the solenoid coil assembly; wherein the terminal clamping area has profiles that are formed in the terminal clamping opening in order to be in contact with the terminal over a flat surface.

A valve unit for an ABS system having a single hydraulic chamber configured to receive a brake fluid, with a delivery port for supplying the brake fluid to a brake caliper, and a passage to for letting the brake fluid from a master cylinder into the single hydraulic chamber is provided. A single piston, longitudinally movable within the single hydraulic chamber, has first transverse surfaces facing the delivery port and defining as a whole a first transverse area, second transverse surfaces facing away from the delivery port and defining as a whole a second transverse area greater than the first transverse area. A longitudinal cavity extends in the single piston establishing fluid communication between the first and second transverse surfaces, whereby displacement of the single piston towards the delivery port occludes the passage and increments the volume available for the brake fluid in the single hydraulic chamber.

A vehicle includes an anti-lock braking system (ABS), a stability control system (SCS), and an electronically lockable differential. A controller of the vehicle is programmed to unlock the differential in response to activation of the ABS or the SCS. The controller is further programmed to prohibit locking of the differential for a pre-defined period of time in response to deactivation of one of the ABS and the SCS that is activated.

Diagnostic and monitoring system for anti-lock braking system is described, comprising an electric pump (1), a manual pump (2), two oil outlets (3, 8), an oil tank (4), one or more pressure gauges (6), an ABS module (7), a flow diverter (9), a central unit (10), a monitor (11), one or more connections (12), an OBD port (13), pressure sensors (14), a front panel (not shown), an oil recovery pan (not shown), one or more fittings (not shown) with various and suitable connectors (not shown), one or more control units (not shown), a diagnostic system (not shown), a monitoring section (not shown).

A fastening device for a vehicle disc brake having a brake carrier includes holding fixture formed in the brake carrier for receiving a speed sensor. The brake carrier includes fastening members for mounting to a flange of the vehicle. The speed sensor is used for an anti-lock braking system to detect wheel slip. The holding fixture is in the form of a bore. The bore may be formed in the strut facing the axle or in an extension of one of the fastening members of the brake carrier. The speed sensor is aligned in its extension direction axially with an exciter in or on the brake disc or in the axle. The speed sensor is attached to a cable that does not need to be guided past the vehicle flange.

A safety warning device for deactivated driver assistance systems, hereinafter referred to as SWEFF, is characterized in that, when driver assistance systems (e.g., ABS (Anti-lock Braking System), TC (Traction Control), Slide Control, Wheelie Control, Engine Brake Control, ESP (Electronic Stability Program), Traffic Sign Recognition, Emergency Brake Assist, Lane Keeping Assist, etc.) are deactivated, the entire display or parts of the display flash (at least once) and / or an acoustic signal sounds at least once and / or a voice output is given at least once (e.g., via loudspeaker and / or a communication system in and / or on the helmet). The flashing and / or the acoustic signal and / or the voice output can be repeated after a certain period of time.This repetition can be prevented by the driver through various actions (e.g., pressing a control button and / or touching a touchscreen (e.g., display) and / or by voice input (e.g., via a microphone) and / or in a menu (software)). In vehicles with analog instruments, the instrument lighting or parts of the instrument lighting and / or at least one indicator light may flash. There may then be a separate indicator light for each driver assistance system.